Merging upstream version 1.29.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

68 files changed, 1477 insertions, 12048 deletions

diff --git a/web/api/Makefile.in b/web/api/Makefile.in
deleted file mode 100644
index 5b19014a..00000000
--- a/web/api/Makefile.in
+++ /dev/null
@@ -1,765 +0,0 @@
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diff --git a/web/api/README.md b/web/api/README.md
index 958b1580..1cc3439c 100644
--- a/web/api/README.md
+++ b/web/api/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "API"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/README.md
+-->
+
 # API
 
 ## Netdata REST API
@@ -6,16 +11,4 @@ The complete documentation of the Netdata API is available at the **[Swagger Edi
 
 If your prefer it over the Swagger Editor, you can also use **[Swagger UI](https://registry.my-netdata.io/swagger/#!/default/get_data)**. This however does not provide all the information available.
 
-## Google charts API
-
-Netdata is a [Google Visualization API datatable and datasource provider](https://developers.google.com/chart/interactive/docs/reference), so it can directly be used with [Google Charts](https://developers.google.com/chart/interactive/docs/).
-
-Check this [single chart, jsfiddle example](https://jsfiddle.net/ktsaou/ensu4uws/9/):
-
-![image](https://cloud.githubusercontent.com/assets/2662304/23824762/1e236b84-0685-11e7-89f4-06fdf67d873a.png)
-
-and this [multi chart, jsfiddle example](https://jsfiddle.net/ktsaou/L5y2eqp2/):
-
-![image](https://cloud.githubusercontent.com/assets/2662304/23824766/31a4a68c-0685-11e7-8429-8327cab64be2.png)
-
 [![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/web/api/badges/Makefile.in b/web/api/badges/Makefile.in
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-	        && { if test -f $@; then exit 0; else break; fi; }; \
-	      exit 1;; \
-	  esac; \
-	done; \
-	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu web/api/badges/Makefile'; \
-	$(am__cd) $(top_srcdir) && \
-	  $(AUTOMAKE) --gnu web/api/badges/Makefile
-Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
-	@case '$?' in \
-	  *config.status*) \
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diff --git a/web/api/badges/README.md b/web/api/badges/README.md
index f199c580..b5fc5346 100644
--- a/web/api/badges/README.md
+++ b/web/api/badges/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "Netdata badges"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/badges/README.md
+-->
+
 # Netdata badges
 
 **Badges are cool!**
@@ -20,7 +25,7 @@ Similarly, there is [a chart that shows outbound bandwidth per class](http://lon
 
 The right one is a **volume** calculation. Netdata calculated the total of the last 86.400 seconds (a day) which gives `kilobits`, then divided it by 8 to make it KB, then by 1024 to make it MB and then by 1024 to make it GB. Calculations like this are quite accurate, since for every value collected, every second, Netdata interpolates it to second boundary using microsecond calculations.
 
-Let's see a few more badge examples (they come from the [Netdata registry](../../../registry/)):
+Let's see a few more badge examples (they come from the [Netdata registry](/registry/README.md)):
 
 -   **cpu usage of user `root`** (you can pick any user; 100% = 1 core). This will be `green <10%`, `yellow <20%`, `orange <50%`, `blue <100%` (1 core), `red` otherwise (you define thresholds and colors on the URL).
 
@@ -178,19 +183,62 @@ These are options dedicated to badges:
 
     Divide the value with this number. The default is `1`.
 
--   `label_color=COLOR`
+-   Color customization parameters
+
+    The following parameters specify colors of each individual part of the badge. Each parameter is documented in detail
+    below.
+
+    | Area of badge      | Background color parameter | Text color parameter |
+    | ---:               | :------------------------: | :------------------: |
+    | Label (left) part  | `label_color`              | `text_color_lbl`     |
+    | Value (right) part | `value_color`              | `text_color_val`     |
+
+    -   `label_color=COLOR`
+
+        The color of the label (the left part). You can use any HTML color in `RGB` or `RRGGBB` hex notation (without
+        the `#` character at the beginning). Additionally, you can use one of the following predefined colors (and you
+        can use them by their name):
+    
+        -   `green`
+        -   `brightgreen`
+        -   `yellow`
+        -   `yellowgreen`
+        -   `orange`
+        -   `red`
+        -   `blue`
+        -   `grey`
+        -   `gray`
+        -   `lightgrey`
+        -   `lightgray`
+    
+        These colors are taken from <https://github.com/badges/shields>, which makes them compatible with standard
+        badges.
+
+    -   `value_color=COLOR:null|COLOR<VALUE|COLOR>VALUE|COLOR>=VALUE|COLOR<=VALUE|...`
+
+        You can add a pipe delimited list of conditions to pick the value color. The first matching (left to right) will
+        be used.
+
+        Example: `value_color=grey:null|green<10|yellow<100|orange<1000|blue<10000|red`
+
+        The above will set `grey` if no value exists (not collected within the `gap when lost iterations above` in
+        `netdata.conf` for the chart), `green` if the value is less than 10, `yellow` if the value is less than 100, and
+        so on. Netdata will use `red` if no other conditions match. Only integers are supported as values.
 
-    The color of the label (the left part). You can use any HTML color, include `#NNN` and `#NNNNNN`. The following colors are defined in Netdata (and you can use them by name): `green`, `brightgreen`, `yellow`, `yellowgreen`, `orange`, `red`, `blue`, `grey`, `gray`, `lightgrey`, `lightgray`. These are taken from <https://github.com/badges/shields> so they are compatible with standard badges.
+        The supported operators are `<`, `>`, `<=`, `>=`, `=` (or `:`), and `!=` (or `<>`).
 
--   `value_color=COLOR:null|COLOR<VALUE|COLOR>VALUE|COLOR>=VALUE|COLOR<=VALUE|...`
+        You can also use the same syntax as the `label_color` parameter to define each of these colors. You can
+        reference a predefined color by name or `RGB`/`RRGGBB` hex notation.
 
-    You can add a pipe delimited list of conditions to pick the color. The first matching (left to right) will be used.
+    -   `text_color_lbl=RGB` or `text_color_lbl=RRGGBB` or `text_color_lbl=color_by_name`
 
-    Example: `value_color=grey:null|green<10|yellow<100|orange<1000|blue<10000|red`
+        This value specifies the font color for the font of left/label side of the badge. The syntax is the same as the
+        `label_color` parameter. If not given, or given with an empty value, Netdata will use the default color.
 
-    The above will set `grey` if no value exists (not collected within the `gap when lost iterations above` in `netdata.conf` for the chart), `green` if the value is less than 10, `yellow` if the value is less than 100, etc up to `red` which will be used if no other conditions match.
+    -   `text_color_val=RGB` or `text_color_val=RRGGBB` or `text_color_lbl=color_by_name`
 
-    The supported operators are `<`, `>`, `<=`, `>=`, `=` (or `:`) and `!=` (or `<>`).
+        This value specifies the font color for the font of right/value side of the badge. The syntax is the same as the
+        `label_color` parameter. If not given, or given with an empty value, Netdata will use the default color.
 
 -   `precision=NUMBER`
 
@@ -250,7 +298,7 @@ These are options dedicated to badges:
 </script>
 ```
 
-A more advanced badges refresh method is to include `http://your.netdata.ip:19999/refresh-badges.js` in your page. For more information and use example, [check this](../../gui/refresh-badges.js).
+A more advanced badges refresh method is to include `http://your.netdata.ip:19999/refresh-badges.js` in your page.
 
 ---
 
diff --git a/web/api/badges/web_buffer_svg.c b/web/api/badges/web_buffer_svg.c
index ea07c894..b5a1e03d 100644
--- a/web/api/badges/web_buffer_svg.c
+++ b/web/api/badges/web_buffer_svg.c
@@ -507,23 +507,23 @@ static struct badge_color {
         // colors from:
         // https://github.com/badges/shields/blob/master/colorscheme.json
 
-        { "brightgreen", 0, "#4c1"    },
-        { "green",       0, "#97CA00" },
-        { "yellow",      0, "#dfb317" },
-        { "yellowgreen", 0, "#a4a61d" },
-        { "orange",      0, "#fe7d37" },
-        { "red",         0, "#e05d44" },
-        { "blue",        0, "#007ec6" },
-        { "grey",        0, "#555"    },
-        { "gray",        0, "#555"    },
-        { "lightgrey",   0, "#9f9f9f" },
-        { "lightgray",   0, "#9f9f9f" },
+        { "brightgreen", 0, "4c1"    },
+        { "green",       0, "97CA00" },
+        { "yellow",      0, "dfb317" },
+        { "yellowgreen", 0, "a4a61d" },
+        { "orange",      0, "fe7d37" },
+        { "red",         0, "e05d44" },
+        { "blue",        0, "007ec6" },
+        { "grey",        0, "555"    },
+        { "gray",        0, "555"    },
+        { "lightgrey",   0, "9f9f9f" },
+        { "lightgray",   0, "9f9f9f" },
 
         // terminator
         { NULL,          0, NULL      }
 };
 
-static inline const char *color_map(const char *color) {
+static inline const char *color_map(const char *color, const char *def) {
     static int max = -1;
     int i;
 
@@ -543,7 +543,7 @@ static inline const char *color_map(const char *color) {
             return ptr->color;
     }
 
-    return color;
+    return def;
 }
 
 typedef enum color_comparison {
@@ -688,24 +688,66 @@ static inline void calc_colorz(const char *color, char *final, size_t len, calcu
 // colors
 #define COLOR_STRING_SIZE 100
 
-void buffer_svg(BUFFER *wb, const char *label, calculated_number value, const char *units, const char *label_color, const char *value_color, int precision, int scale, uint32_t options, int fixed_width_lbl, int fixed_width_val) {
+static inline int allowed_hexa_char(char x) {
+    return ( (x >= '0' && x <= '9') ||
+             (x >= 'a' && x <= 'f') ||
+             (x >= 'A' && x <= 'F')
+           );
+}
+
+static int html_color_check(const char *str) {
+    int i = 0;
+    while(str[i]) {
+        if(!allowed_hexa_char(str[i]))
+            return 0;
+        if(unlikely(i >= 6))
+            return 0;
+        i++;
+    }
+    // want to allow either RGB or RRGGBB
+    return ( i == 6 || i == 3 );
+}
+
+// Will parse color arg as #RRGGBB or #RGB or one of the colors
+// from color_map hash table
+// if parsing fails (argument error) it will return default color
+// given as default parameter (def)
+// in any case it will return either color in "RRGGBB" or "RGB" format as string
+// or whatever is given as def (without checking - caller responsible to give sensible
+// safely escaped default) as default if it fails
+// in any case this function must always return something we can put directly in XML
+// so no escaping is necessary anymore (with excpetion of default where caller is responsible)
+// to give sensible default
+#define BADGE_SVG_COLOR_ARG_MAXLEN 20
+
+static const char *parse_color_argument(const char *arg, const char *def)
+{
+    if( !arg )
+        return def;
+    size_t len = strnlen(arg, BADGE_SVG_COLOR_ARG_MAXLEN);
+    if( len < 2 || len >= BADGE_SVG_COLOR_ARG_MAXLEN )
+        return def;
+    if( html_color_check(arg) )
+        return arg;
+    return color_map(arg, def);
+}
+
+void buffer_svg(BUFFER *wb, const char *label, calculated_number value, const char *units, const char *label_color, const char *value_color, int precision, int scale, uint32_t options, int fixed_width_lbl, int fixed_width_val, const char* text_color_lbl, const char* text_color_val) {
     char    value_color_buffer[COLOR_STRING_SIZE + 1]
             , value_string[VALUE_STRING_SIZE + 1]
             , label_escaped[LABEL_STRING_SIZE + 1]
-            , value_escaped[VALUE_STRING_SIZE + 1]
-            , label_color_escaped[COLOR_STRING_SIZE + 1]
-            , value_color_escaped[COLOR_STRING_SIZE + 1];
+            , value_escaped[VALUE_STRING_SIZE + 1];
+
+    const char *label_color_parsed;
+    const char *value_color_parsed;
 
     double label_width = (double)fixed_width_lbl, value_width = (double)fixed_width_val, total_width;
     double height = 20.0, font_size = 11.0, text_offset = 5.8, round_corner = 3.0;
 
     if(scale < 100) scale = 100;
 
-    if(unlikely(!label_color || !*label_color))
-        label_color = "#555";
-
     if(unlikely(!value_color || !*value_color))
-        value_color = (isnan(value) || isinf(value))?"#999":"#4c1";
+        value_color = (isnan(value) || isinf(value))?"999":"4c1";
 
     calc_colorz(value_color, value_color_buffer, COLOR_STRING_SIZE, value);
     format_value_and_unit(value_string, VALUE_STRING_SIZE, (options & RRDR_OPTION_DISPLAY_ABS)?calculated_number_fabs(value):value, units, precision);
@@ -718,8 +760,9 @@ void buffer_svg(BUFFER *wb, const char *label, calculated_number value, const ch
 
     escape_xmlz(label_escaped, label, LABEL_STRING_SIZE);
     escape_xmlz(value_escaped, value_string, VALUE_STRING_SIZE);
-    escape_xmlz(label_color_escaped, color_map(label_color), COLOR_STRING_SIZE);
-    escape_xmlz(value_color_escaped, color_map(value_color_buffer), COLOR_STRING_SIZE);
+
+    label_color_parsed = parse_color_argument(label_color, "555");
+    value_color_parsed = parse_color_argument(value_color_buffer, "555");
 
     wb->contenttype = CT_IMAGE_SVG_XML;
 
@@ -743,10 +786,10 @@ void buffer_svg(BUFFER *wb, const char *label, calculated_number value, const ch
                 "<rect class=\"bdge-ttl-width\" width=\"%0.2f\" height=\"%0.2f\" rx=\"%0.2f\" fill=\"#fff\"/>"
             "</mask>"
             "<g mask=\"url(#round)\">"
-                "<rect class=\"bdge-rect-lbl\" width=\"%0.2f\" height=\"%0.2f\" fill=\"%s\"/>",
+                "<rect class=\"bdge-rect-lbl\" width=\"%0.2f\" height=\"%0.2f\" fill=\"#%s\"/>",
         total_width, height,
         total_width, height, round_corner,
-        label_width, height, label_color_escaped); //<rect class="bdge-rect-lbl"
+        label_width, height, label_color_parsed); //<rect class="bdge-rect-lbl"
 
     if(fixed_width_lbl > 0 && fixed_width_val > 0) {
         buffer_sprintf(wb,
@@ -757,8 +800,8 @@ void buffer_svg(BUFFER *wb, const char *label, calculated_number value, const ch
     }
 
     buffer_sprintf(wb,
-                "<rect class=\"bdge-rect-val\" x=\"%0.2f\" width=\"%0.2f\" height=\"%0.2f\" fill=\"%s\"/>",
-        label_width, value_width, height, value_color_escaped);
+                "<rect class=\"bdge-rect-val\" x=\"%0.2f\" width=\"%0.2f\" height=\"%0.2f\" fill=\"#%s\"/>",
+        label_width, value_width, height, value_color_parsed);
     
     if(fixed_width_lbl > 0 && fixed_width_val > 0) {
         buffer_sprintf(wb,
@@ -771,18 +814,18 @@ void buffer_svg(BUFFER *wb, const char *label, calculated_number value, const ch
     buffer_sprintf(wb,
                 "<rect class=\"bdge-ttl-width\" width=\"%0.2f\" height=\"%0.2f\" fill=\"url(#smooth)\"/>"
             "</g>"
-            "<g fill=\"#fff\" text-anchor=\"middle\" font-family=\"DejaVu Sans,Verdana,Geneva,sans-serif\" font-size=\"%0.2f\">"
+            "<g text-anchor=\"middle\" font-family=\"DejaVu Sans,Verdana,Geneva,sans-serif\" font-size=\"%0.2f\">"
                 "<text class=\"bdge-lbl-lbl\" x=\"%0.2f\" y=\"%0.0f\" fill=\"#010101\" fill-opacity=\".3\" clip-path=\"url(#lbl-rect)\">%s</text>"
-                "<text class=\"bdge-lbl-lbl\" x=\"%0.2f\" y=\"%0.0f\" clip-path=\"url(#lbl-rect)\">%s</text>"
+                "<text class=\"bdge-lbl-lbl\" x=\"%0.2f\" y=\"%0.0f\" fill=\"#%s\" clip-path=\"url(#lbl-rect)\">%s</text>"
                 "<text class=\"bdge-lbl-val\" x=\"%0.2f\" y=\"%0.0f\" fill=\"#010101\" fill-opacity=\".3\" clip-path=\"url(#val-rect)\">%s</text>"
-                "<text class=\"bdge-lbl-val\" x=\"%0.2f\" y=\"%0.0f\" clip-path=\"url(#val-rect)\">%s</text>"
+                "<text class=\"bdge-lbl-val\" x=\"%0.2f\" y=\"%0.0f\" fill=\"#%s\" clip-path=\"url(#val-rect)\">%s</text>"
             "</g>",
         total_width, height,
         font_size,
         label_width / 2, ceil(height - text_offset), label_escaped,
-        label_width / 2, ceil(height - text_offset - 1.0), label_escaped,
+        label_width / 2, ceil(height - text_offset - 1.0), parse_color_argument(text_color_lbl, "fff"), label_escaped,
         label_width + value_width / 2 -1, ceil(height - text_offset), value_escaped,
-        label_width + value_width / 2 -1, ceil(height - text_offset - 1.0), value_escaped);
+        label_width + value_width / 2 -1, ceil(height - text_offset - 1.0), parse_color_argument(text_color_val, "fff"), value_escaped);
 
     if(fixed_width_lbl <= 0 || fixed_width_val <= 0){
         buffer_sprintf(wb,
@@ -815,6 +858,9 @@ void buffer_svg(BUFFER *wb, const char *label, calculated_number value, const ch
     buffer_sprintf(wb, "</svg>");
 }
 
+#define BADGE_URL_ARG_LBL_COLOR "text_color_lbl"
+#define BADGE_URL_ARG_VAL_COLOR "text_color_val"
+
 int web_client_api_request_v1_badge(RRDHOST *host, struct web_client *w, char *url) {
     int ret = HTTP_RESP_BAD_REQUEST;
     buffer_flush(w->response.data);
@@ -836,7 +882,9 @@ int web_client_api_request_v1_badge(RRDHOST *host, struct web_client *w, char *u
     , *scale_str = NULL
     , *alarm = NULL
     , *fixed_width_lbl_str = NULL
-    , *fixed_width_val_str = NULL; 
+    , *fixed_width_val_str = NULL
+    , *text_color_lbl_str = NULL
+    , *text_color_val_str = NULL; 
 
     int group = RRDR_GROUPING_AVERAGE;
     uint32_t options = 0x00000000;
@@ -883,6 +931,8 @@ int web_client_api_request_v1_badge(RRDHOST *host, struct web_client *w, char *u
         else if(!strcmp(name, "fixed_width_lbl")) fixed_width_lbl_str = value;
         else if(!strcmp(name, "fixed_width_val")) fixed_width_val_str = value;
         else if(!strcmp(name, "alarm")) alarm = value;
+        else if(!strcmp(name, BADGE_URL_ARG_LBL_COLOR)) text_color_lbl_str = value;
+        else if(!strcmp(name, BADGE_URL_ARG_VAL_COLOR)) text_color_val_str = value;
     }
 
     int fixed_width_lbl = -1;
@@ -893,7 +943,7 @@ int web_client_api_request_v1_badge(RRDHOST *host, struct web_client *w, char *u
         fixed_width_lbl = str2i(fixed_width_lbl_str);
         fixed_width_val = str2i(fixed_width_val_str);
     }
-    
+
     if(!chart || !*chart) {
         buffer_no_cacheable(w->response.data);
         buffer_sprintf(w->response.data, "No chart id is given at the request.");
@@ -906,7 +956,7 @@ int web_client_api_request_v1_badge(RRDHOST *host, struct web_client *w, char *u
     if(!st) st = rrdset_find_byname(host, chart);
     if(!st) {
         buffer_no_cacheable(w->response.data);
-        buffer_svg(w->response.data, "chart not found", NAN, "", NULL, NULL, -1, scale, 0, -1, -1);
+        buffer_svg(w->response.data, "chart not found", NAN, "", NULL, NULL, -1, scale, 0, -1, -1, NULL, NULL);
         ret = HTTP_RESP_OK;
         goto cleanup;
     }
@@ -917,7 +967,7 @@ int web_client_api_request_v1_badge(RRDHOST *host, struct web_client *w, char *u
         rc = rrdcalc_find(st, alarm);
         if (!rc) {
             buffer_no_cacheable(w->response.data);
-            buffer_svg(w->response.data, "alarm not found", NAN, "", NULL, NULL, -1, scale, 0, -1, -1);
+            buffer_svg(w->response.data, "alarm not found", NAN, "", NULL, NULL, -1, scale, 0, -1, -1, NULL, NULL);
             ret = HTTP_RESP_OK;
             goto cleanup;
         }
@@ -1037,7 +1087,9 @@ int web_client_api_request_v1_badge(RRDHOST *host, struct web_client *w, char *u
                 scale,
                 options,
                 fixed_width_lbl,
-                fixed_width_val
+                fixed_width_val,
+                text_color_lbl_str,
+                text_color_val_str
         );
         ret = HTTP_RESP_OK;
     }
@@ -1076,7 +1128,9 @@ int web_client_api_request_v1_badge(RRDHOST *host, struct web_client *w, char *u
                 scale,
                 options,
                 fixed_width_lbl,
-                fixed_width_val
+                fixed_width_val,
+                text_color_lbl_str,
+                text_color_val_str
         );
     }
 
diff --git a/web/api/badges/web_buffer_svg.h b/web/api/badges/web_buffer_svg.h
index f0558c07..1cf69e20 100644
--- a/web/api/badges/web_buffer_svg.h
+++ b/web/api/badges/web_buffer_svg.h
@@ -6,7 +6,7 @@
 #include "libnetdata/libnetdata.h"
 #include "web/server/web_client.h"
 
-extern void buffer_svg(BUFFER *wb, const char *label, calculated_number value, const char *units, const char *label_color, const char *value_color, int precision, int scale, uint32_t options, int fixed_width_lbl, int fixed_width_val);
+extern void buffer_svg(BUFFER *wb, const char *label, calculated_number value, const char *units, const char *label_color, const char *value_color, int precision, int scale, uint32_t options, int fixed_width_lbl, int fixed_width_val, const char* text_color_lbl, const char* text_color_val);
 extern char *format_value_and_unit(char *value_string, size_t value_string_len, calculated_number value, const char *units, int precision);
 
 extern int web_client_api_request_v1_badge(struct rrdhost *host, struct web_client *w, char *url);
diff --git a/web/api/exporters/Makefile.in b/web/api/exporters/Makefile.in
deleted file mode 100644
index fe19f654..00000000
--- a/web/api/exporters/Makefile.in
+++ /dev/null
@@ -1,704 +0,0 @@
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diff --git a/web/api/exporters/README.md b/web/api/exporters/README.md
index 2cbb037c..40196474 100644
--- a/web/api/exporters/README.md
+++ b/web/api/exporters/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "Exporters"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/exporters/README.md
+-->
+
 # Exporters
 
 TBD
diff --git a/web/api/exporters/allmetrics.c b/web/api/exporters/allmetrics.c
index 686a6cab..d10de3d3 100644
--- a/web/api/exporters/allmetrics.c
+++ b/web/api/exporters/allmetrics.c
@@ -6,23 +6,36 @@ struct prometheus_output_options {
     char *name;
     PROMETHEUS_OUTPUT_OPTIONS flag;
 } prometheus_output_flags_root[] = {
-        { "help",       PROMETHEUS_OUTPUT_HELP       },
-        { "types",      PROMETHEUS_OUTPUT_TYPES      },
-        { "names",      PROMETHEUS_OUTPUT_NAMES      },
-        { "timestamps", PROMETHEUS_OUTPUT_TIMESTAMPS },
-        { "variables",  PROMETHEUS_OUTPUT_VARIABLES  },
-        { "oldunits",   PROMETHEUS_OUTPUT_OLDUNITS   },
-        { "hideunits",  PROMETHEUS_OUTPUT_HIDEUNITS  },
-        // terminator
-        { NULL, PROMETHEUS_OUTPUT_NONE },
+    { "help",       PROMETHEUS_OUTPUT_HELP       },
+    { "types",      PROMETHEUS_OUTPUT_TYPES      },
+    { "names",      PROMETHEUS_OUTPUT_NAMES      },
+    { "timestamps", PROMETHEUS_OUTPUT_TIMESTAMPS },
+    { "variables",  PROMETHEUS_OUTPUT_VARIABLES  },
+    { "oldunits",   PROMETHEUS_OUTPUT_OLDUNITS   },
+    { "hideunits",  PROMETHEUS_OUTPUT_HIDEUNITS  },
+    // terminator
+    { NULL, PROMETHEUS_OUTPUT_NONE },
 };
 
 inline int web_client_api_request_v1_allmetrics(RRDHOST *host, struct web_client *w, char *url) {
     int format = ALLMETRICS_SHELL;
     const char *prometheus_server = w->client_ip;
-    uint32_t prometheus_backend_options = global_backend_options;
-    PROMETHEUS_OUTPUT_OPTIONS prometheus_output_options = PROMETHEUS_OUTPUT_TIMESTAMPS | ((global_backend_options & BACKEND_OPTION_SEND_NAMES)?PROMETHEUS_OUTPUT_NAMES:0);
-    const char *prometheus_prefix = global_backend_prefix;
+
+    uint32_t prometheus_exporting_options;
+    if (prometheus_exporter_instance)
+        prometheus_exporting_options = prometheus_exporter_instance->config.options;
+    else
+        prometheus_exporting_options = global_backend_options;
+
+    PROMETHEUS_OUTPUT_OPTIONS prometheus_output_options =
+        PROMETHEUS_OUTPUT_TIMESTAMPS |
+        ((prometheus_exporting_options & BACKEND_OPTION_SEND_NAMES) ? PROMETHEUS_OUTPUT_NAMES : 0);
+
+    const char *prometheus_prefix;
+    if (prometheus_exporter_instance)
+        prometheus_prefix = prometheus_exporter_instance->config.prefix;
+    else
+        prometheus_prefix = global_backend_prefix;
 
     while(url) {
         char *value = mystrsep(&url, "&");
@@ -51,7 +64,7 @@ inline int web_client_api_request_v1_allmetrics(RRDHOST *host, struct web_client
             prometheus_prefix = value;
         }
         else if(!strcmp(name, "data") || !strcmp(name, "source") || !strcmp(name, "data source") || !strcmp(name, "data-source") || !strcmp(name, "data_source") || !strcmp(name, "datasource")) {
-            prometheus_backend_options = backend_parse_data_source(value, prometheus_backend_options);
+            prometheus_exporting_options = backend_parse_data_source(value, prometheus_exporting_options);
         }
         else {
             int i;
@@ -89,7 +102,7 @@ inline int web_client_api_request_v1_allmetrics(RRDHOST *host, struct web_client
                     , w->response.data
                     , prometheus_server
                     , prometheus_prefix
-                    , prometheus_backend_options
+                    , prometheus_exporting_options
                     , prometheus_output_options
             );
             return HTTP_RESP_OK;
@@ -101,7 +114,7 @@ inline int web_client_api_request_v1_allmetrics(RRDHOST *host, struct web_client
                     , w->response.data
                     , prometheus_server
                     , prometheus_prefix
-                    , prometheus_backend_options
+                    , prometheus_exporting_options
                     , prometheus_output_options
             );
             return HTTP_RESP_OK;
diff --git a/web/api/exporters/prometheus/Makefile.in b/web/api/exporters/prometheus/Makefile.in
deleted file mode 100644
index 41fbe17a..00000000
--- a/web/api/exporters/prometheus/Makefile.in
+++ /dev/null
@@ -1,519 +0,0 @@
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diff --git a/web/api/exporters/prometheus/README.md b/web/api/exporters/prometheus/README.md
index 9b2367cc..d26c6e46 100644
--- a/web/api/exporters/prometheus/README.md
+++ b/web/api/exporters/prometheus/README.md
@@ -1,5 +1,10 @@
+<!--
+title: "prometheus exporter"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/exporters/prometheus/README.md
+-->
+
 # prometheus exporter
 
-The prometheus exporter for Netdata is located at the [backends section for prometheus](../../../../backends/prometheus).
+The prometheus exporter for Netdata is located at the [backends section for prometheus](/backends/prometheus/README.md).
 
 [![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fexporters%2Fprometheus%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
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diff --git a/web/api/exporters/shell/README.md b/web/api/exporters/shell/README.md
index fef253c8..b919045f 100644
--- a/web/api/exporters/shell/README.md
+++ b/web/api/exporters/shell/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "shell exporter"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/exporters/shell/README.md
+-->
+
 # shell exporter
 
 Shell scripts can now query Netdata:
diff --git a/web/api/exporters/shell/allmetrics_shell.c b/web/api/exporters/shell/allmetrics_shell.c
index 90c63d44..daa00499 100644
--- a/web/api/exporters/shell/allmetrics_shell.c
+++ b/web/api/exporters/shell/allmetrics_shell.c
@@ -119,7 +119,7 @@ void rrd_stats_api_v1_charts_allmetrics_json(RRDHOST *host, BUFFER *wb) {
                            , st->family
                            , st->context
                            , st->units
-                           , rrdset_last_entry_t(st)
+                           , rrdset_last_entry_t_nolock(st)
             );
 
             chart_counter++;
diff --git a/web/api/formatters/Makefile.in b/web/api/formatters/Makefile.in
deleted file mode 100644
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diff --git a/web/api/formatters/README.md b/web/api/formatters/README.md
index 037fb534..1fd2b302 100644
--- a/web/api/formatters/README.md
+++ b/web/api/formatters/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "Query formatting"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/formatters/README.md
+-->
+
 # Query formatting
 
 API data queries need to be formatted before returned to the caller.
@@ -7,18 +12,18 @@ The following formats are supported:
 
 | format|module|content type|description|
 |:----:|:----:|:----------:|:----------|
-| `array`|[ssv](ssv)|application/json|a JSON array|
-| `csv`|[csv](csv)|text/plain|a text table, comma separated, with a header line (dimension names) and `\r\n` at the end of the lines|
-| `csvjsonarray`|[csv](csv)|application/json|a JSON array, with each row as another array (the first row has the dimension names)|
-| `datasource`|[json](json)|application/json|a Google Visualization Provider `datasource` javascript callback|
-| `datatable`|[json](json)|application/json|a Google `datatable`|
-| `html`|[csv](csv)|text/html|an html table|
-| `json`|[json](json)|application/json|a JSON object|
-| `jsonp`|[json](json)|application/json|a JSONP javascript callback|
-| `markdown`|[csv](csv)|text/plain|a markdown table|
-| `ssv`|[ssv](ssv)|text/plain|a space separated list of values|
-| `ssvcomma`|[ssv](ssv)|text/plain|a comma separated list of values|
-| `tsv`|[csv](csv)|text/plain|a TAB delimited `csv` (MS Excel flavor)|
+| `array`|[ssv](/web/api/formatters/ssv/README.md)|application/json|a JSON array|
+| `csv`|[csv](/web/api/formatters/csv/README.md)|text/plain|a text table, comma separated, with a header line (dimension names) and `\r\n` at the end of the lines|
+| `csvjsonarray`|[csv](/web/api/formatters/csv/README.md)|application/json|a JSON array, with each row as another array (the first row has the dimension names)|
+| `datasource`|[json](/web/api/formatters/json/README.md)|application/json|a Google Visualization Provider `datasource` javascript callback|
+| `datatable`|[json](/web/api/formatters/json/README.md)|application/json|a Google `datatable`|
+| `html`|[csv](/web/api/formatters/csv/README.md)|text/html|an html table|
+| `json`|[json](/web/api/formatters/json/README.md)|application/json|a JSON object|
+| `jsonp`|[json](/web/api/formatters/json/README.md)|application/json|a JSONP javascript callback|
+| `markdown`|[csv](/web/api/formatters/csv/README.md)|text/plain|a markdown table|
+| `ssv`|[ssv](/web/api/formatters/ssv/README.md)|text/plain|a space separated list of values|
+| `ssvcomma`|[ssv](/web/api/formatters/ssv/README.md)|text/plain|a comma separated list of values|
+| `tsv`|[csv](/web/api/formatters/csv/README.md)|text/plain|a TAB delimited `csv` (MS Excel flavor)|
 
 For examples of each format, check the relative module documentation.
 
diff --git a/web/api/formatters/charts2json.c b/web/api/formatters/charts2json.c
index db3ef37e..856ffb5e 100644
--- a/web/api/formatters/charts2json.c
+++ b/web/api/formatters/charts2json.c
@@ -4,7 +4,7 @@
 
 // generate JSON for the /api/v1/charts API call
 
-static inline const char* get_release_channel() {
+const char* get_release_channel() {
     static int use_stable = -1;
 
     if (use_stable == -1) {
@@ -36,7 +36,7 @@ static inline const char* get_release_channel() {
     return (use_stable)?"stable":"nightly";
 }
 
-void charts2json(RRDHOST *host, BUFFER *wb) {
+void charts2json(RRDHOST *host, BUFFER *wb, int skip_volatile, int show_archived) {
     static char *custom_dashboard_info_js_filename = NULL;
     size_t c, dimensions = 0, memory = 0, alarms = 0;
     RRDSET *st;
@@ -71,12 +71,12 @@ void charts2json(RRDHOST *host, BUFFER *wb) {
     c = 0;
     rrdhost_rdlock(host);
     rrdset_foreach_read(st, host) {
-        if(rrdset_is_available_for_viewers(st)) {
+        if ((!show_archived && rrdset_is_available_for_viewers(st)) || (show_archived && rrdset_is_archived(st))) {
             if(c) buffer_strcat(wb, ",");
             buffer_strcat(wb, "\n\t\t\"");
             buffer_strcat(wb, st->id);
             buffer_strcat(wb, "\": ");
-            rrdset2json(st, wb, &dimensions, &memory);
+            rrdset2json(st, wb, &dimensions, &memory, skip_volatile);
 
             c++;
             st->last_accessed_time = now;
@@ -111,7 +111,7 @@ void charts2json(RRDHOST *host, BUFFER *wb) {
         size_t found = 0;
         RRDHOST *h;
         rrdhost_foreach_read(h) {
-            if(!rrdhost_should_be_removed(h, host, now)) {
+            if(!rrdhost_should_be_removed(h, host, now) && !rrdhost_flag_check(h, RRDHOST_FLAG_ARCHIVED)) {
                 buffer_sprintf(wb
                                , "%s\n\t\t{"
                                  "\n\t\t\t\"hostname\": \"%s\""
diff --git a/web/api/formatters/charts2json.h b/web/api/formatters/charts2json.h
index 926e76d5..2d8cce31 100644
--- a/web/api/formatters/charts2json.h
+++ b/web/api/formatters/charts2json.h
@@ -5,7 +5,8 @@
 
 #include "rrd2json.h"
 
-extern void charts2json(RRDHOST *host, BUFFER *wb);
+extern void charts2json(RRDHOST *host, BUFFER *wb, int skip_volatile, int show_archived);
 extern void chartcollectors2json(RRDHOST *host, BUFFER *wb);
+extern const char* get_release_channel();
 
 #endif //NETDATA_API_FORMATTER_CHARTS2JSON_H
diff --git a/web/api/formatters/csv/Makefile.in b/web/api/formatters/csv/Makefile.in
deleted file mode 100644
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diff --git a/web/api/formatters/csv/README.md b/web/api/formatters/csv/README.md
index 0d16fc4e..2a859e24 100644
--- a/web/api/formatters/csv/README.md
+++ b/web/api/formatters/csv/README.md
@@ -1,6 +1,11 @@
+<!--
+title: "CSV formatter"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/formatters/csv/README.md
+-->
+
 # CSV formatter
 
-The CSV formatter presents [results of database queries](../../queries) in the following formats:
+The CSV formatter presents [results of database queries](/web/api/queries/README.md) in the following formats:
 
 | format|content type|description|
 | :----:|:----------:|:----------|
diff --git a/web/api/formatters/csv/csv.c b/web/api/formatters/csv/csv.c
index 53bf2982..da0a6b58 100644
--- a/web/api/formatters/csv/csv.c
+++ b/web/api/formatters/csv/csv.c
@@ -3,7 +3,7 @@
 #include "libnetdata/libnetdata.h"
 #include "csv.h"
 
-void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const char *startline, const char *separator, const char *endline, const char *betweenlines) {
+void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const char *startline, const char *separator, const char *endline, const char *betweenlines, RRDDIM *temp_rd) {
     rrdset_check_rdlock(r->st);
 
     //info("RRD2CSV(): %s: BEGIN", r->st->id);
@@ -11,7 +11,7 @@ void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const
     RRDDIM *d;
 
     // print the csv header
-    for(c = 0, i = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+    for(c = 0, i = 0, d = temp_rd?temp_rd:r->st->dimensions; d && c < r->d ;c++, d = d->next) {
         if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
         if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
@@ -31,7 +31,7 @@ void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const
 
     if(format == DATASOURCE_CSV_MARKDOWN) {
         // print the --- line after header
-        for(c = 0, i = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+        for(c = 0, i = 0, d = temp_rd?temp_rd:r->st->dimensions; d && c < r->d ;c++, d = d->next) {
             if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
             if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
@@ -89,7 +89,7 @@ void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const
         int set_min_max = 0;
         if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
             total = 0;
-            for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+            for(c = 0, d = temp_rd?temp_rd:r->st->dimensions; d && c < r->d ;c++, d = d->next) {
                 calculated_number n = cn[c];
 
                 if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
@@ -103,7 +103,7 @@ void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const
         }
 
         // for each dimension
-        for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+        for(c = 0, d = temp_rd?temp_rd:r->st->dimensions; d && c < r->d ;c++, d = d->next) {
             if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
             if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
diff --git a/web/api/formatters/csv/csv.h b/web/api/formatters/csv/csv.h
index a89742d3..cf6020de 100644
--- a/web/api/formatters/csv/csv.h
+++ b/web/api/formatters/csv/csv.h
@@ -5,7 +5,7 @@
 
 #include "web/api/queries/rrdr.h"
 
-extern void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const char *startline, const char *separator, const char *endline, const char *betweenlines);
+extern void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const char *startline, const char *separator, const char *endline, const char *betweenlines, RRDDIM *temp_rd);
 
 #include "../rrd2json.h"
 
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+++ /dev/null
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-AUTOMAKE_OPTIONS = subdir-objects
-MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
-dist_noinst_DATA = \
-    README.md \
-    $(NULL)
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-
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-$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
-	@for dep in $?; do \
-	  case '$(am__configure_deps)' in \
-	    *$$dep*) \
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-	        && { if test -f $@; then exit 0; else break; fi; }; \
-	      exit 1;; \
-	  esac; \
-	done; \
-	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu web/api/formatters/json/Makefile'; \
-	$(am__cd) $(top_srcdir) && \
-	  $(AUTOMAKE) --gnu web/api/formatters/json/Makefile
-Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
-	@case '$?' in \
-	  *config.status*) \
-	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
-	  *) \
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-	esac;
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-$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
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-cscope cscopelist:
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-distdir: $(DISTFILES)
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-	case $$dist_files in \
-	  */*) $(MKDIR_P) `echo "$$dist_files" | \
-			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
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diff --git a/web/api/formatters/json/README.md b/web/api/formatters/json/README.md
index 2bd37bc7..685a3f2d 100644
--- a/web/api/formatters/json/README.md
+++ b/web/api/formatters/json/README.md
@@ -1,6 +1,11 @@
+<!--
+title: "JSON formatter"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/formatters/json/README.md
+-->
+
 # JSON formatter
 
-The CSV formatter presents [results of database queries](../../queries) in the following formats:
+The CSV formatter presents [results of database queries](/web/api/queries/README.md) in the following formats:
 
 | format       | content type     | description|
 |:----:|:----------:|:----------|
diff --git a/web/api/formatters/json/json.c b/web/api/formatters/json/json.c
index 66b3b9c8..f28eb573 100644
--- a/web/api/formatters/json/json.c
+++ b/web/api/formatters/json/json.c
@@ -5,7 +5,7 @@
 #define JSON_DATES_JS 1
 #define JSON_DATES_TIMESTAMP 2
 
-void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable) {
+void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable, RRDDIM *temp_rd) {
     rrdset_check_rdlock(r->st);
 
     //info("RRD2JSON(): %s: BEGIN", r->st->id);
@@ -94,12 +94,14 @@ void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable) {
     RRDDIM *rd;
 
     // print the header lines
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+    for(c = 0, i = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
         if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
         if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
         buffer_strcat(wb, pre_label);
         buffer_strcat(wb, rd->name);
+//        buffer_strcat(wb, ".");
+//        buffer_strcat(wb, rd->rrdset->name);
         buffer_strcat(wb, post_label);
         i++;
     }
@@ -154,7 +156,7 @@ void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable) {
             if(row_annotations) {
                 // google supports one annotation per row
                 int annotation_found = 0;
-                for(c = 0, rd = r->st->dimensions; rd ;c++, rd = rd->next) {
+                for(c = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd ;c++, rd = rd->next) {
                     if(unlikely(!(r->od[c] & RRDR_DIMENSION_SELECTED))) continue;
 
                     if(co[c] & RRDR_VALUE_RESET) {
@@ -185,7 +187,7 @@ void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable) {
         int set_min_max = 0;
         if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
             total = 0;
-            for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+            for(c = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
                 calculated_number n = cn[c];
 
                 if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
@@ -199,7 +201,7 @@ void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable) {
         }
 
         // for each dimension
-        for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+        for(c = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
             if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
             if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
diff --git a/web/api/formatters/json/json.h b/web/api/formatters/json/json.h
index 01363ce0..6d73a3ff 100644
--- a/web/api/formatters/json/json.h
+++ b/web/api/formatters/json/json.h
@@ -5,6 +5,6 @@
 
 #include "../rrd2json.h"
 
-extern void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable);
+extern void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable, RRDDIM *temp_rd);
 
 #endif //NETDATA_API_FORMATTER_JSON_H
diff --git a/web/api/formatters/json_wrapper.c b/web/api/formatters/json_wrapper.c
index 5ef2caf1..cf4f1099 100644
--- a/web/api/formatters/json_wrapper.c
+++ b/web/api/formatters/json_wrapper.c
@@ -2,7 +2,7 @@
 
 #include "json_wrapper.h"
 
-void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, int string_value) {
+void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, int string_value, RRDDIM *temp_rd, char *chart_label_key) {
     rrdset_check_rdlock(r->st);
 
     long rows = rrdr_rows(r);
@@ -22,6 +22,7 @@ void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS
         sq[0] = '"';
     }
 
+    rrdset_rdlock(r->st);
     buffer_sprintf(wb, "{\n"
                        "   %sapi%s: 1,\n"
                        "   %sid%s: %s%s%s,\n"
@@ -34,17 +35,18 @@ void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS
                        "   %safter%s: %u,\n"
                        "   %sdimension_names%s: ["
                    , kq, kq
-                   , kq, kq, sq, r->st->id, sq
-                   , kq, kq, sq, r->st->name, sq
+                   , kq, kq, sq, temp_rd?r->st->context:r->st->id, sq
+                   , kq, kq, sq, temp_rd?r->st->context:r->st->name, sq
                    , kq, kq, r->update_every
                    , kq, kq, r->st->update_every
-                   , kq, kq, (uint32_t)rrdset_first_entry_t(r->st)
-                   , kq, kq, (uint32_t)rrdset_last_entry_t(r->st)
+                   , kq, kq, (uint32_t)rrdset_first_entry_t_nolock(r->st)
+                   , kq, kq, (uint32_t)rrdset_last_entry_t_nolock(r->st)
                    , kq, kq, (uint32_t)r->before
                    , kq, kq, (uint32_t)r->after
                    , kq, kq);
+    rrdset_unlock(r->st);
 
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+    for(c = 0, i = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
         if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
         if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
@@ -68,7 +70,7 @@ void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS
                        "   %sdimension_ids%s: ["
                    , kq, kq);
 
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+    for(c = 0, i = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
         if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
         if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
@@ -84,12 +86,85 @@ void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS
         buffer_strcat(wb, "no data");
         buffer_strcat(wb, sq);
     }
+    buffer_strcat(wb, "],\n");
+
+    // Composite charts
+    if (temp_rd) {
+        buffer_sprintf(
+            wb,
+            "   %schart_ids%s: [",
+            kq, kq);
+
+        for (c = 0, i = 0, rd = temp_rd ; rd && c < r->d; c++, rd = rd->next) {
+            if (unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN))
+                continue;
+            if (unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO)))
+                continue;
+
+            if (i)
+                buffer_strcat(wb, ", ");
+            buffer_strcat(wb, sq);
+            buffer_strcat(wb, rd->rrdset->name);
+            buffer_strcat(wb, sq);
+            i++;
+        }
+        if (!i) {
+            rows = 0;
+            buffer_strcat(wb, sq);
+            buffer_strcat(wb, "no data");
+            buffer_strcat(wb, sq);
+        }
+        buffer_strcat(wb, "],\n");
+        if (chart_label_key) {
+            buffer_sprintf(wb, "   %schart_labels%s: { ", kq, kq);
+
+            SIMPLE_PATTERN *pattern = simple_pattern_create(chart_label_key, ",|\t\r\n\f\v", SIMPLE_PATTERN_EXACT);
+            SIMPLE_PATTERN *original_pattern = pattern;
+            char *label_key = NULL;
+            int keys = 0;
+            while (pattern && (label_key = simple_pattern_iterate(&pattern))) {
+                uint32_t key_hash = simple_hash(label_key);
+                struct label *current_label;
+
+                if (keys)
+                    buffer_strcat(wb, ", ");
+                buffer_sprintf(wb, "%s%s%s : [", kq, label_key, kq);
+                keys++;
+
+                for (c = 0, i = 0, rd = temp_rd; rd && c < r->d; c++, rd = rd->next) {
+                    if (unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN))
+                        continue;
+                    if (unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO)))
+                        continue;
+                    if (i)
+                        buffer_strcat(wb, ", ");
+
+                    current_label = rrdset_lookup_label_key(rd->rrdset, label_key, key_hash);
+                    if (current_label) {
+                        buffer_strcat(wb, sq);
+                        buffer_strcat(wb, current_label->value);
+                        buffer_strcat(wb, sq);
+                    } else
+                        buffer_strcat(wb, "null");
+                    i++;
+                }
+                if (!i) {
+                    rows = 0;
+                    buffer_strcat(wb, sq);
+                    buffer_strcat(wb, "no data");
+                    buffer_strcat(wb, sq);
+                }
+                buffer_strcat(wb, "]");
+            }
+            buffer_strcat(wb, "},\n");
+            simple_pattern_free(original_pattern);
+        }
+    }
 
-    buffer_sprintf(wb, "],\n"
-                       "   %slatest_values%s: ["
+    buffer_sprintf(wb, "   %slatest_values%s: ["
                    , kq, kq);
 
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+    for(c = 0, i = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
         if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
         if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
@@ -125,7 +200,7 @@ void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS
 
         if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
             total = 0;
-            for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+            for(c = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
                 calculated_number *cn = &r->v[ (rrdr_rows(r) - 1) * r->d ];
                 calculated_number n = cn[c];
 
@@ -138,7 +213,7 @@ void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS
             if(total == 0) total = 1;
         }
 
-        for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+        for(c = 0, i = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
             if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
             if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
diff --git a/web/api/formatters/json_wrapper.h b/web/api/formatters/json_wrapper.h
index 7cb7d345..d48d5d1a 100644
--- a/web/api/formatters/json_wrapper.h
+++ b/web/api/formatters/json_wrapper.h
@@ -5,7 +5,7 @@
 
 #include "rrd2json.h"
 
-extern void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, int string_value);
+extern void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, int string_value, RRDDIM *temp_rd, char *chart_key);
 extern void rrdr_json_wrapper_end(RRDR *r, BUFFER *wb, uint32_t format, uint32_t options, int string_value);
 
 #endif //NETDATA_API_FORMATTER_JSON_WRAPPER_H
diff --git a/web/api/formatters/rrd2json.c b/web/api/formatters/rrd2json.c
index 17b1a301..9168f76e 100644
--- a/web/api/formatters/rrd2json.c
+++ b/web/api/formatters/rrd2json.c
@@ -2,8 +2,79 @@
 
 #include "web/api/web_api_v1.h"
 
+static inline void free_temp_rrddim(RRDDIM *temp_rd)
+{
+    if (unlikely(!temp_rd))
+        return;
+
+    RRDDIM *t;
+    while (temp_rd) {
+        t = temp_rd->next;
+        freez((char *)temp_rd->id);
+        freez((char *)temp_rd->name);
+#ifdef ENABLE_DBENGINE
+        if (temp_rd->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE)
+            freez(temp_rd->state->metric_uuid);
+#endif
+        freez(temp_rd->state);
+        freez(temp_rd);
+        temp_rd = t;
+    }
+}
+
+void free_context_param_list(struct context_param **param_list)
+{
+    if (unlikely(!param_list || !*param_list))
+        return;
+
+    free_temp_rrddim(((*param_list)->rd));
+    freez((*param_list));
+    *param_list = NULL;
+}
+
+void build_context_param_list(struct context_param **param_list, RRDSET *st)
+{
+    if (unlikely(!param_list || !st))
+        return;
+
+    if (unlikely(!(*param_list))) {
+        *param_list = mallocz(sizeof(struct context_param));
+        (*param_list)->first_entry_t = LONG_MAX;
+        (*param_list)->last_entry_t = 0;
+        (*param_list)->rd = NULL;
+    }
+
+    RRDDIM *rd1;
+    st->last_accessed_time = now_realtime_sec();
+    rrdset_rdlock(st);
+
+    (*param_list)->first_entry_t = MIN((*param_list)->first_entry_t, rrdset_first_entry_t_nolock(st));
+    (*param_list)->last_entry_t  = MAX((*param_list)->last_entry_t, rrdset_last_entry_t_nolock(st));
+
+    rrddim_foreach_read(rd1, st) {
+        RRDDIM *rd = mallocz(rd1->memsize);
+        memcpy(rd, rd1, rd1->memsize);
+        rd->id = strdupz(rd1->id);
+        rd->name = strdupz(rd1->name);
+        rd->state = mallocz(sizeof(*rd->state));
+        memcpy(rd->state, rd1->state, sizeof(*rd->state));
+        memcpy(&rd->state->collect_ops, &rd1->state->collect_ops, sizeof(struct rrddim_collect_ops));
+        memcpy(&rd->state->query_ops, &rd1->state->query_ops, sizeof(struct rrddim_query_ops));
+#ifdef ENABLE_DBENGINE
+        if (rd->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) {
+            rd->state->metric_uuid = mallocz(sizeof(uuid_t));
+            uuid_copy(*rd->state->metric_uuid, *rd1->state->metric_uuid);
+        }
+#endif
+        rd->next = (*param_list)->rd;
+        (*param_list)->rd = rd;
+    }
+
+    rrdset_unlock(st);
+}
+
 void rrd_stats_api_v1_chart(RRDSET *st, BUFFER *wb) {
-    rrdset2json(st, wb, NULL, NULL);
+    rrdset2json(st, wb, NULL, NULL, 0);
 }
 
 void rrdr_buffer_print_format(BUFFER *wb, uint32_t format)  {
@@ -69,7 +140,9 @@ int rrdset2value_api_v1(
         , time_t *db_before
         , int *value_is_null
 ) {
-    RRDR *r = rrd2rrdr(st, points, after, before, group_method, group_time, options, dimensions);
+
+    RRDR *r = rrd2rrdr(st, points, after, before, group_method, group_time, options, dimensions, NULL);
+
     if(!r) {
         if(value_is_null) *value_is_null = 1;
         return HTTP_RESP_INTERNAL_SERVER_ERROR;
@@ -114,10 +187,15 @@ int rrdset2anything_api_v1(
         , long group_time
         , uint32_t options
         , time_t *latest_timestamp
+        , struct context_param *context_param_list
+        , char *chart_label_key
 ) {
-    st->last_accessed_time = now_realtime_sec();
+    time_t last_accessed_time = now_realtime_sec();
+    st->last_accessed_time = last_accessed_time;
+
+    RRDDIM *temp_rd = context_param_list ? context_param_list->rd : NULL;
 
-    RRDR *r = rrd2rrdr(st, points, after, before, group_method, group_time, options, dimensions?buffer_tostring(dimensions):NULL);
+    RRDR *r = rrd2rrdr(st, points, after, before, group_method, group_time, options, dimensions?buffer_tostring(dimensions):NULL, context_param_list);
     if(!r) {
         buffer_strcat(wb, "Cannot generate output with these parameters on this chart.");
         return HTTP_RESP_INTERNAL_SERVER_ERROR;
@@ -135,7 +213,7 @@ int rrdset2anything_api_v1(
     case DATASOURCE_SSV:
         if(options & RRDR_OPTION_JSON_WRAP) {
             wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
+            rrdr_json_wrapper_begin(r, wb, format, options, 1, temp_rd, chart_label_key);
             rrdr2ssv(r, wb, options, "", " ", "");
             rrdr_json_wrapper_end(r, wb, format, options, 1);
         }
@@ -148,7 +226,7 @@ int rrdset2anything_api_v1(
     case DATASOURCE_SSV_COMMA:
         if(options & RRDR_OPTION_JSON_WRAP) {
             wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
+            rrdr_json_wrapper_begin(r, wb, format, options, 1, temp_rd, chart_label_key);
             rrdr2ssv(r, wb, options, "", ",", "");
             rrdr_json_wrapper_end(r, wb, format, options, 1);
         }
@@ -161,7 +239,7 @@ int rrdset2anything_api_v1(
     case DATASOURCE_JS_ARRAY:
         if(options & RRDR_OPTION_JSON_WRAP) {
             wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+            rrdr_json_wrapper_begin(r, wb, format, options, 0, temp_rd, chart_label_key);
             rrdr2ssv(r, wb, options, "[", ",", "]");
             rrdr_json_wrapper_end(r, wb, format, options, 0);
         }
@@ -174,42 +252,42 @@ int rrdset2anything_api_v1(
     case DATASOURCE_CSV:
         if(options & RRDR_OPTION_JSON_WRAP) {
             wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
-            rrdr2csv(r, wb, format, options, "", ",", "\\n", "");
+            rrdr_json_wrapper_begin(r, wb, format, options, 1, temp_rd, chart_label_key);
+            rrdr2csv(r, wb, format, options, "", ",", "\\n", "", temp_rd);
             rrdr_json_wrapper_end(r, wb, format, options, 1);
         }
         else {
             wb->contenttype = CT_TEXT_PLAIN;
-            rrdr2csv(r, wb, format, options, "", ",", "\r\n", "");
+            rrdr2csv(r, wb, format, options, "", ",", "\r\n", "", temp_rd);
         }
         break;
 
     case DATASOURCE_CSV_MARKDOWN:
         if(options & RRDR_OPTION_JSON_WRAP) {
             wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
-            rrdr2csv(r, wb, format, options, "", "|", "\\n", "");
+            rrdr_json_wrapper_begin(r, wb, format, options, 1, temp_rd, chart_label_key);
+            rrdr2csv(r, wb, format, options, "", "|", "\\n", "", temp_rd);
             rrdr_json_wrapper_end(r, wb, format, options, 1);
         }
         else {
             wb->contenttype = CT_TEXT_PLAIN;
-            rrdr2csv(r, wb, format, options, "", "|", "\r\n", "");
+            rrdr2csv(r, wb, format, options, "", "|", "\r\n", "", temp_rd);
         }
         break;
 
     case DATASOURCE_CSV_JSON_ARRAY:
         wb->contenttype = CT_APPLICATION_JSON;
         if(options & RRDR_OPTION_JSON_WRAP) {
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+            rrdr_json_wrapper_begin(r, wb, format, options, 0, temp_rd, chart_label_key);
             buffer_strcat(wb, "[\n");
-            rrdr2csv(r, wb, format, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n");
+            rrdr2csv(r, wb, format, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n", temp_rd);
             buffer_strcat(wb, "\n]");
             rrdr_json_wrapper_end(r, wb, format, options, 0);
         }
         else {
             wb->contenttype = CT_APPLICATION_JSON;
             buffer_strcat(wb, "[\n");
-            rrdr2csv(r, wb, format, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n");
+            rrdr2csv(r, wb, format, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n", temp_rd);
             buffer_strcat(wb, "\n]");
         }
         break;
@@ -217,29 +295,29 @@ int rrdset2anything_api_v1(
     case DATASOURCE_TSV:
         if(options & RRDR_OPTION_JSON_WRAP) {
             wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
-            rrdr2csv(r, wb, format, options, "", "\t", "\\n", "");
+            rrdr_json_wrapper_begin(r, wb, format, options, 1, temp_rd, chart_label_key);
+            rrdr2csv(r, wb, format, options, "", "\t", "\\n", "", temp_rd);
             rrdr_json_wrapper_end(r, wb, format, options, 1);
         }
         else {
             wb->contenttype = CT_TEXT_PLAIN;
-            rrdr2csv(r, wb, format, options, "", "\t", "\r\n", "");
+            rrdr2csv(r, wb, format, options, "", "\t", "\r\n", "", temp_rd);
         }
         break;
 
     case DATASOURCE_HTML:
         if(options & RRDR_OPTION_JSON_WRAP) {
             wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
+            rrdr_json_wrapper_begin(r, wb, format, options, 1, temp_rd, chart_label_key);
             buffer_strcat(wb, "<html>\\n<center>\\n<table border=\\\"0\\\" cellpadding=\\\"5\\\" cellspacing=\\\"5\\\">\\n");
-            rrdr2csv(r, wb, format, options, "<tr><td>", "</td><td>", "</td></tr>\\n", "");
+            rrdr2csv(r, wb, format, options, "<tr><td>", "</td><td>", "</td></tr>\\n", "", temp_rd);
             buffer_strcat(wb, "</table>\\n</center>\\n</html>\\n");
             rrdr_json_wrapper_end(r, wb, format, options, 1);
         }
         else {
             wb->contenttype = CT_TEXT_HTML;
             buffer_strcat(wb, "<html>\n<center>\n<table border=\"0\" cellpadding=\"5\" cellspacing=\"5\">\n");
-            rrdr2csv(r, wb, format, options, "<tr><td>", "</td><td>", "</td></tr>\n", "");
+            rrdr2csv(r, wb, format, options, "<tr><td>", "</td><td>", "</td></tr>\n", "", temp_rd);
             buffer_strcat(wb, "</table>\n</center>\n</html>\n");
         }
         break;
@@ -248,9 +326,9 @@ int rrdset2anything_api_v1(
         wb->contenttype = CT_APPLICATION_X_JAVASCRIPT;
 
         if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+            rrdr_json_wrapper_begin(r, wb, format, options, 0, temp_rd, chart_label_key);
 
-        rrdr2json(r, wb, options, 1);
+        rrdr2json(r, wb, options, 1, temp_rd);
 
         if(options & RRDR_OPTION_JSON_WRAP)
             rrdr_json_wrapper_end(r, wb, format, options, 0);
@@ -260,9 +338,9 @@ int rrdset2anything_api_v1(
         wb->contenttype = CT_APPLICATION_JSON;
 
         if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+            rrdr_json_wrapper_begin(r, wb, format, options, 0, temp_rd, chart_label_key);
 
-        rrdr2json(r, wb, options, 1);
+        rrdr2json(r, wb, options, 1, temp_rd);
 
         if(options & RRDR_OPTION_JSON_WRAP)
             rrdr_json_wrapper_end(r, wb, format, options, 0);
@@ -271,9 +349,9 @@ int rrdset2anything_api_v1(
     case DATASOURCE_JSONP:
         wb->contenttype = CT_APPLICATION_X_JAVASCRIPT;
         if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+            rrdr_json_wrapper_begin(r, wb, format, options, 0, temp_rd, chart_label_key);
 
-        rrdr2json(r, wb, options, 0);
+        rrdr2json(r, wb, options, 0, temp_rd);
 
         if(options & RRDR_OPTION_JSON_WRAP)
             rrdr_json_wrapper_end(r, wb, format, options, 0);
@@ -284,9 +362,9 @@ int rrdset2anything_api_v1(
         wb->contenttype = CT_APPLICATION_JSON;
 
         if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+            rrdr_json_wrapper_begin(r, wb, format, options, 0, temp_rd, chart_label_key);
 
-        rrdr2json(r, wb, options, 0);
+        rrdr2json(r, wb, options, 0, temp_rd);
 
         if(options & RRDR_OPTION_JSON_WRAP)
             rrdr_json_wrapper_end(r, wb, format, options, 0);
diff --git a/web/api/formatters/rrd2json.h b/web/api/formatters/rrd2json.h
index 8fce4ef7..1f929c49 100644
--- a/web/api/formatters/rrd2json.h
+++ b/web/api/formatters/rrd2json.h
@@ -65,6 +65,8 @@ extern int rrdset2anything_api_v1(
         , long group_time
         , uint32_t options
         , time_t *latest_timestamp
+        , struct context_param *context_param_list
+        , char *chart_label_key
 );
 
 extern int rrdset2value_api_v1(
@@ -83,4 +85,7 @@ extern int rrdset2value_api_v1(
         , int *value_is_null
 );
 
+extern void build_context_param_list(struct context_param **param_list, RRDSET *st);
+extern void free_context_param_list(struct context_param **param_list);
+
 #endif /* NETDATA_RRD2JSON_H */
diff --git a/web/api/formatters/rrdset2json.c b/web/api/formatters/rrdset2json.c
index 4d913992..5482881e 100644
--- a/web/api/formatters/rrdset2json.c
+++ b/web/api/formatters/rrdset2json.c
@@ -2,13 +2,43 @@
 
 #include "rrdset2json.h"
 
+void chart_labels2json(RRDSET *st, BUFFER *wb, size_t indentation)
+{
+    char tabs[11];
+    struct label_index *labels = &st->state->labels;
+
+    if (indentation > 10)
+        indentation = 10;
+
+    tabs[0] = '\0';
+    while (indentation) {
+        strcat(tabs, "\t");
+        indentation--;
+    }
+
+    int count = 0;
+    netdata_rwlock_rdlock(&labels->labels_rwlock);
+    for (struct label *label = labels->head; label; label = label->next) {
+        if(count > 0) buffer_strcat(wb, ",\n");
+        buffer_strcat(wb, tabs);
+
+        char value[CONFIG_MAX_VALUE * 2 + 1];
+        sanitize_json_string(value, label->value, CONFIG_MAX_VALUE * 2);
+        buffer_sprintf(wb, "\"%s\": \"%s\"", label->key, value);
+
+        count++;
+    }
+    buffer_strcat(wb, "\n");
+    netdata_rwlock_unlock(&labels->labels_rwlock);
+}
+
 // generate JSON for the /api/v1/chart API call
 
-void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used) {
+void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used, int skip_volatile) {
     rrdset_rdlock(st);
 
-    time_t first_entry_t = rrdset_first_entry_t(st);
-    time_t last_entry_t  = rrdset_last_entry_t(st);
+    time_t first_entry_t = rrdset_first_entry_t_nolock(st);
+    time_t last_entry_t  = rrdset_last_entry_t_nolock(st);
 
     buffer_sprintf(wb,
             "\t\t{\n"
@@ -25,30 +55,44 @@ void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memor
             "\t\t\t\"units\": \"%s\",\n"
             "\t\t\t\"data_url\": \"/api/v1/data?chart=%s\",\n"
             "\t\t\t\"chart_type\": \"%s\",\n"
-            "\t\t\t\"duration\": %ld,\n"
-            "\t\t\t\"first_entry\": %ld,\n"
-            "\t\t\t\"last_entry\": %ld,\n"
-            "\t\t\t\"update_every\": %d,\n"
-            "\t\t\t\"dimensions\": {\n"
-                   , st->id
-                   , st->name
-                   , st->type
-                   , st->family
-                   , st->context
-                   , st->title, st->name
-                   , st->priority
-                   , st->plugin_name?st->plugin_name:""
-                   , st->module_name?st->module_name:""
-                   , rrdset_flag_check(st, RRDSET_FLAG_ENABLED)?"true":"false"
-                   , st->units
-                   , st->name
-                   , rrdset_type_name(st->chart_type)
-                   , last_entry_t - first_entry_t + st->update_every//st->entries * st->update_every
-                   , first_entry_t//rrdset_first_entry_t(st)
-                   , last_entry_t//rrdset_last_entry_t(st)
-                   , st->update_every
+                    , st->id
+                    , st->name
+                    , st->type
+                    , st->family
+                    , st->context
+                    , st->title, st->name
+                    , st->priority
+                    , st->plugin_name?st->plugin_name:""
+                    , st->module_name?st->module_name:""
+                    , rrdset_flag_check(st, RRDSET_FLAG_ENABLED)?"true":"false"
+                    , st->units
+                    , st->name
+                    , rrdset_type_name(st->chart_type)
+    );
+
+    if (likely(!skip_volatile))
+        buffer_sprintf(wb,
+                "\t\t\t\"duration\": %ld,\n"
+            , last_entry_t - first_entry_t + st->update_every//st->entries * st->update_every
+        );
+
+    buffer_sprintf(wb,
+                "\t\t\t\"first_entry\": %ld,\n"
+        , first_entry_t //rrdset_first_entry_t(st)
     );
 
+    if (likely(!skip_volatile))
+        buffer_sprintf(wb,
+                "\t\t\t\"last_entry\": %ld,\n"
+            , last_entry_t//rrdset_last_entry_t(st)
+        );
+
+    buffer_sprintf(wb,
+                "\t\t\t\"update_every\": %d,\n"
+                "\t\t\t\"dimensions\": {\n"
+                       , st->update_every
+        );
+
     unsigned long memory = st->memsize;
 
     size_t dimensions = 0;
@@ -58,14 +102,14 @@ void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memor
 
         memory += rd->memsize;
 
-        buffer_sprintf(
-                wb
-                , "%s"
-                  "\t\t\t\t\"%s\": { \"name\": \"%s\" }"
-                , dimensions ? ",\n" : ""
-                , rd->id
-                , rd->name
-        );
+        if (dimensions)
+            buffer_strcat(wb, ",\n\t\t\t\t\"");
+        else
+            buffer_strcat(wb, "\t\t\t\t\"");
+        buffer_strcat_jsonescape(wb, rd->id);
+        buffer_strcat(wb, "\": { \"name\": \"");
+        buffer_strcat_jsonescape(wb, rd->name);
+        buffer_strcat(wb, "\" }");
 
         dimensions++;
     }
@@ -81,33 +125,36 @@ void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memor
     buffer_strcat(wb, ",\n\t\t\t\"red\": ");
     buffer_rrd_value(wb, st->red);
 
-    buffer_strcat(wb, ",\n\t\t\t\"alarms\": {\n");
-    size_t alarms = 0;
-    RRDCALC *rc;
-    for(rc = st->alarms; rc ; rc = rc->rrdset_next) {
-
-        buffer_sprintf(
-                wb
-                , "%s"
-                  "\t\t\t\t\"%s\": {\n"
-                  "\t\t\t\t\t\"id\": %u,\n"
-                  "\t\t\t\t\t\"status\": \"%s\",\n"
-                  "\t\t\t\t\t\"units\": \"%s\",\n"
-                  "\t\t\t\t\t\"update_every\": %d\n"
-                  "\t\t\t\t}"
-                , (alarms) ? ",\n" : ""
-                , rc->name
-                , rc->id
-                , rrdcalc_status2string(rc->status)
-                , rc->units
-                , rc->update_every
+    if (likely(!skip_volatile)) {
+        buffer_strcat(wb, ",\n\t\t\t\"alarms\": {\n");
+        size_t alarms = 0;
+        RRDCALC *rc;
+        for (rc = st->alarms; rc; rc = rc->rrdset_next) {
+            buffer_sprintf(
+                wb,
+                "%s"
+                "\t\t\t\t\"%s\": {\n"
+                "\t\t\t\t\t\"id\": %u,\n"
+                "\t\t\t\t\t\"status\": \"%s\",\n"
+                "\t\t\t\t\t\"units\": \"%s\",\n"
+                "\t\t\t\t\t\"update_every\": %d\n"
+                "\t\t\t\t}",
+                (alarms) ? ",\n" : "", rc->name, rc->id, rrdcalc_status2string(rc->status), rc->units,
+                rc->update_every);
+
+            alarms++;
+        }
+        buffer_sprintf(wb,
+                       "\n\t\t\t}"
         );
-
-        alarms++;
     }
+    buffer_strcat(wb, ",\n\t\t\t\"chart_labels\": {\n");
+    chart_labels2json(st, wb, 2);
+    buffer_strcat(wb, "\t\t\t}\n");
+
 
     buffer_sprintf(wb,
-            "\n\t\t\t}\n\t\t}"
+            "\n\t\t}"
     );
 
     rrdset_unlock(st);
diff --git a/web/api/formatters/rrdset2json.h b/web/api/formatters/rrdset2json.h
index b2669ec0..697c8463 100644
--- a/web/api/formatters/rrdset2json.h
+++ b/web/api/formatters/rrdset2json.h
@@ -5,6 +5,6 @@
 
 #include "rrd2json.h"
 
-extern void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used);
+extern void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used, int skip_volatile);
 
 #endif //NETDATA_API_FORMATTER_RRDSET2JSON_H
diff --git a/web/api/formatters/ssv/Makefile.in b/web/api/formatters/ssv/Makefile.in
deleted file mode 100644
index bc30c091..00000000
--- a/web/api/formatters/ssv/Makefile.in
+++ /dev/null
@@ -1,519 +0,0 @@
-# Makefile.in generated by automake 1.15.1 from Makefile.am.
-# @configure_input@
-
-# Copyright (C) 1994-2017 Free Software Foundation, Inc.
-
-# This Makefile.in is free software; the Free Software Foundation
-# gives unlimited permission to copy and/or distribute it,
-# with or without modifications, as long as this notice is preserved.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
-# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
-# PARTICULAR PURPOSE.
-
-@SET_MAKE@
-
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-VPATH = @srcdir@
-am__is_gnu_make = { \
-  if test -z '$(MAKELEVEL)'; then \
-    false; \
-  elif test -n '$(MAKE_HOST)'; then \
-    true; \
-  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
-    true; \
-  else \
-    false; \
-  fi; \
-}
-am__make_running_with_option = \
-  case $${target_option-} in \
-      ?) ;; \
-      *) echo "am__make_running_with_option: internal error: invalid" \
-              "target option '$${target_option-}' specified" >&2; \
-         exit 1;; \
-  esac; \
-  has_opt=no; \
-  sane_makeflags=$$MAKEFLAGS; \
-  if $(am__is_gnu_make); then \
-    sane_makeflags=$$MFLAGS; \
-  else \
-    case $$MAKEFLAGS in \
-      *\\[\ \	]*) \
-        bs=\\; \
-        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
-          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
-    esac; \
-  fi; \
-  skip_next=no; \
-  strip_trailopt () \
-  { \
-    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
-  }; \
-  for flg in $$sane_makeflags; do \
-    test $$skip_next = yes && { skip_next=no; continue; }; \
-    case $$flg in \
-      *=*|--*) continue;; \
-        -*I) strip_trailopt 'I'; skip_next=yes;; \
-      -*I?*) strip_trailopt 'I';; \
-        -*O) strip_trailopt 'O'; skip_next=yes;; \
-      -*O?*) strip_trailopt 'O';; \
-        -*l) strip_trailopt 'l'; skip_next=yes;; \
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diff --git a/web/api/formatters/ssv/README.md b/web/api/formatters/ssv/README.md
index ec85fe46..d439949a 100644
--- a/web/api/formatters/ssv/README.md
+++ b/web/api/formatters/ssv/README.md
@@ -1,6 +1,11 @@
+<!--
+title: "SSV formatter"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/formatters/ssv/README.md
+-->
+
 # SSV formatter
 
-The SSV formatter sums all dimensions in [results of database queries](../../queries)
+The SSV formatter sums all dimensions in [results of database queries](/web/api/queries/README.md)
 to a single value and returns a list of such values showing how it changes through time.
 
 It supports the following formats:
@@ -11,7 +16,7 @@ It supports the following formats:
 | `ssvcomma` | text/plain       | a comma separated list of values |
 | `array`    | application/json | a JSON array                     |
 
-The CSV formatter respects the following API `&options=`:
+The SSV formatter respects the following API `&options=`:
 
 | option    | supported | description                                                                         |
 | :----:|:-------:|:----------|
diff --git a/web/api/formatters/value/Makefile.in b/web/api/formatters/value/Makefile.in
deleted file mode 100644
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diff --git a/web/api/formatters/value/README.md b/web/api/formatters/value/README.md
index 04a0f886..21c93708 100644
--- a/web/api/formatters/value/README.md
+++ b/web/api/formatters/value/README.md
@@ -1,6 +1,11 @@
+<!--
+title: "Value formatter"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/formatters/value/README.md
+-->
+
 # Value formatter
 
-The Value formatter presents [results of database queries](../../queries) as a single value.
+The Value formatter presents [results of database queries](/web/api/queries/README.md) as a single value.
 
 To calculate the single value to be returned, it sums the values of all dimensions.
 
@@ -13,7 +18,7 @@ The Value formatter respects the following API `&options=`:
 | `min2max` | yes       | to return the delta from the minimum value to the maximum value (across dimensions)|
 
 The Value formatter is not exposed by the API by itself.
-Instead it is used by the [`ssv`](../ssv) formatter
-and [health monitoring queries](../../../../health).
+Instead it is used by the [`ssv`](/web/api/formatters/ssv/README.md) formatter
+and [health monitoring queries](/health/README.md).
 
 [![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fformatters%2Fvalue%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/web/api/health/Makefile.in b/web/api/health/Makefile.in
deleted file mode 100644
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-# Tell versions [3.59,3.63) of GNU make to not export all variables.
-# Otherwise a system limit (for SysV at least) may be exceeded.
-.NOEXPORT:
diff --git a/web/api/health/README.md b/web/api/health/README.md
index a86dbfdd..b6e8b5c2 100644
--- a/web/api/health/README.md
+++ b/web/api/health/README.md
@@ -1,20 +1,26 @@
+<!--
+title: "Health API Calls"
+date: 2020-04-27
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/health/README.md
+-->
+
 # Health API Calls
 
 ## Health Read API
 
 ### Enabled Alarms
 
-NetData enables alarms on demand, i.e. when the chart they should be linked to starts collecting data. So, although many more alarms are configured, only the useful ones are enabled.
-
-To get the list of all enabled alarms:
+Netdata enables alarms on demand, i.e. when the chart they should be linked to starts collecting data. So, although many
+more alarms are configured, only the useful ones are enabled.
 
-`http://your.netdata.ip:19999/api/v1/alarms?all`
+To get the list of all enabled alarms, open your browser and navigate to `http://NODE:19999/api/v1/alarms?all`,
+replacing `NODE` with the IP address or hostname for your Agent dashboard.
 
 ### Raised Alarms
 
 This API call will return the alarms currently in WARNING or CRITICAL state.
 
-`http://your.netdata.ip:19999/api/v1/alarms`
+`http://NODE:19999/api/v1/alarms`
 
 ### Event Log
 
@@ -28,11 +34,11 @@ The size of the alarm log is configured in `netdata.conf`. There are 2 settings:
 
 The API call retrieves all entries of the alarm log:
 
-`http://your.netdata.ip:19999/api/v1/alarm_log`
+`http://NODE:19999/api/v1/alarm_log`
 
 ### Alarm Log Incremental Updates
 
-`http://your.netdata.ip:19999/api/v1/alarm_log?after=UNIQUEID`
+`http://NODE:19999/api/v1/alarm_log?after=UNIQUEID`
 
 The above returns all the events in the alarm log that occurred after UNIQUEID (you poll it once without `after=`, remember the last UNIQUEID of the returned set, which you give back to get incrementally the next events).
 
@@ -40,7 +46,7 @@ The above returns all the events in the alarm log that occurred after UNIQUEID (
 
 The following will return an SVG badge of the alarm named `NAME`, attached to the chart named `CHART`.
 
-`http://your.netdata.ip:19999/api/v1/badge.svg?alarm=NAME&chart=CHART`
+`http://NODE:19999/api/v1/badge.svg?alarm=NAME&chart=CHART`
 
 ## Health Management API
 
@@ -53,7 +59,7 @@ Specifically, the API allows you to:
 -   Silence alarm notifications. Alarm conditions will be evaluated, the alarms will appear in the log and the Netdata UI will show the alarms as active, but no notifications will be sent.
 -   Disable or Silence specific alarms that match selectors on alarm/template name, chart, context, host and family.
 
-The API is available by default, but it is protected by an `api authorization token` that is stored in the file you will see in the following entry of `http://localhost:19999/netdata.conf`:
+The API is available by default, but it is protected by an `api authorization token` that is stored in the file you will see in the following entry of `http://NODE:19999/netdata.conf`:
 
 ```
 [registry]
@@ -63,27 +69,27 @@ The API is available by default, but it is protected by an `api authorization to
 You can access the API via GET requests, by adding the bearer token to an `Authorization` http header, like this:
 
 ```
-curl "http://myserver/api/v1/manage/health?cmd=RESET" -H "X-Auth-Token: Mytoken"
+curl "http://NODE:19999/api/v1/manage/health?cmd=RESET" -H "X-Auth-Token: Mytoken"
 ```
 
-By default access to the health management API is only allowed from `localhost`. Accessing the API from anything else will return a 403 error with the message `You are not allowed to access this resource.`. You can change permissions by editing the `allow management from` variable in `netdata.conf` within the [web] section. See [web server access lists](../../server/#access-lists) for more information.
+By default access to the health management API is only allowed from `localhost`. Accessing the API from anything else will return a 403 error with the message `You are not allowed to access this resource.`. You can change permissions by editing the `allow management from` variable in `netdata.conf` within the [web] section. See [web server access lists](/web/server/README.md#access-lists) for more information.
 
 The command `RESET` just returns Netdata to the default operation, with all health checks and notifications enabled.
-If you've configured and entered your token correclty, you should see the plain text response `All health checks and notifications are enabled`.
+If you've configured and entered your token correctly, you should see the plain text response `All health checks and notifications are enabled`.
 
 ### Disable or silence all alarms
 
 If all you need is temporarily disable all health checks, then you issue the following before your maintenance period starts:
 
 ```sh
-curl "http://myserver/api/v1/manage/health?cmd=DISABLE ALL" -H "X-Auth-Token: Mytoken"
+curl "http://NODE:19999/api/v1/manage/health?cmd=DISABLE ALL" -H "X-Auth-Token: Mytoken"
 ```
 
 The effect of disabling health checks is that the alarm criteria are not evaluated at all and nothing is written in the alarm log.
 If you want the health checks to be running but to not receive any notifications during your maintenance period, you can instead use this:
 
 ```sh
-curl "http://myserver/api/v1/manage/health?cmd=SILENCE ALL" -H "X-Auth-Token: Mytoken"
+curl "http://NODE:19999/api/v1/manage/health?cmd=SILENCE ALL" -H "X-Auth-Token: Mytoken"
 ```
 
 Alarms may then still be raised and logged in Netdata, so you'll be able to see them via the UI.  
@@ -91,7 +97,7 @@ Alarms may then still be raised and logged in Netdata, so you'll be able to see
 Regardless of the option you choose, at the end of your maintenance period you revert to the normal state via the RESET command.
 
 ```sh
- curl "http://myserver/api/v1/manage/health?cmd=RESET" -H "X-Auth-Token: Mytoken"
+ curl "http://NODE:19999/api/v1/manage/health?cmd=RESET" -H "X-Auth-Token: Mytoken"
 ```
 
 ### Disable or silence specific alarms
@@ -115,12 +121,12 @@ To clear all selectors and reset the mode to default, use the `RESET` command.
 The following example silences notifications for all the alarms with context=load:
 
 ```
-curl "http://myserver/api/v1/manage/health?cmd=SILENCE&context=load" -H "X-Auth-Token: Mytoken"
+curl "http://NODE:19999/api/v1/manage/health?cmd=SILENCE&context=load" -H "X-Auth-Token: Mytoken"
 ```
 
 #### Selection criteria
 
-The `selection criteria` are key/value pairs, in the format `key : value`, where value is a Netdata [simple pattern](../../../libnetdata/simple_pattern/). This means that you can create very powerful selectors (you will rarely need more than one or two).
+The `selection criteria` are key/value pairs, in the format `key : value`, where value is a Netdata [simple pattern](/libnetdata/simple_pattern/README.md). This means that you can create very powerful selectors (you will rarely need more than one or two).
 
 The accepted keys for the `selection criteria` are the following:
 
@@ -135,19 +141,19 @@ You can add any of the selection criteria you need on the request, to ensure tha
 Example 1: Disable all health checks for context = `random`
 
 ```
-http://localhost/api/v1/manage/health?cmd=DISABLE&context=random
+http://NODE:19999/api/v1/manage/health?cmd=DISABLE&context=random
 ```
 
 Example 2: Silence all alarms and templates with name starting with `out_of` on host `myhost`
 
 ```
-http://localhost/api/v1/manage/health?cmd=SILENCE&alarm=out_of*&hosts=myhost
+http://NODE:19999/api/v1/manage/health?cmd=SILENCE&alarm=out_of*&hosts=myhost
 ```
 
 Example 2.2: Add one more selector, to also silence alarms for cpu1 and cpu2
 
 ```
-http://localhost/api/v1/manage/health?families=cpu1 cpu2
+http://NODE:19999/api/v1/manage/health?families=cpu1 cpu2
 ```
 
 ### List silencers
@@ -155,7 +161,7 @@ http://localhost/api/v1/manage/health?families=cpu1 cpu2
 The command `LIST` was added in Netdata v1.16.0 and returns a JSON with the current status of the silencers.
 
 ```
- curl "http://myserver/api/v1/manage/health?cmd=LIST" -H "X-Auth-Token: Mytoken"
+ curl "http://NODE:19999/api/v1/manage/health?cmd=LIST" -H "X-Auth-Token: Mytoken"
 ```
 
 As an example, the following response shows that we have two silencers configured, one for an alarm called `samplealarm` and one for alarms with context `random` on host `myhost`
@@ -214,6 +220,6 @@ The file's location is configurable in `netdata.conf`. The default is shown belo
 
 ### Further reading
 
-The test script under [tests/health_mgmtapi](../../../tests/health_mgmtapi) contains a series of tests that you can either run or read through to understand the various calls and responses better.
+The test script under [tests/health_mgmtapi](/tests/health_mgmtapi/README.md) contains a series of tests that you can either run or read through to understand the various calls and responses better.
 
 [![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fhealth%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/web/api/netdata-swagger.json b/web/api/netdata-swagger.json
index f09c8fe3..ed2555f8 100644
--- a/web/api/netdata-swagger.json
+++ b/web/api/netdata-swagger.json
@@ -9,7 +9,7 @@
     "/info": {
       "get": {
         "summary": "Get netdata basic information",
-        "description": "The info endpoint returns basic information about netdata. It provides:\n* netdata version\n* netdata unique id\n* list of hosts mirrored (includes itself)\n* Operating System, Virtualization and Container technology information\n* List of active collector plugins and modules\n* number of alarms in the host\n  * number of alarms in normal state\n  * number of alarms in warning state\n  * number of alarms in critical state\n",
+        "description": "The info endpoint returns basic information about netdata. It provides:\n* netdata version\n* netdata unique id\n* list of hosts mirrored (includes itself)\n* Operating System, Virtualization, K8s nodes and Container technology information\n* List of active collector plugins and modules\n* number of alarms in the host\n  * number of alarms in normal state\n  * number of alarms in warning state\n  * number of alarms in critical state\n",
         "responses": {
           "200": {
             "description": "netdata basic information.",
@@ -130,8 +130,8 @@
           {
             "name": "chart",
             "in": "query",
-            "description": "The id of the chart as returned by the /charts call.",
-            "required": true,
+            "description": "The id of the chart as returned by the /charts call. Note chart or context must be specified",
+            "required": false,
             "allowEmptyValue": false,
             "schema": {
               "type": "string",
@@ -140,6 +140,17 @@
             }
           },
           {
+            "name": "context",
+            "in": "query",
+            "description": "The context of the chart as returned by the /charts call. Note chart or context must be specified",
+            "required": false,
+            "allowEmptyValue": false,
+            "schema": {
+              "type": "string",
+              "format": "as returned by /charts"
+            }
+          },
+          {
             "name": "dimension",
             "in": "query",
             "description": "Zero, one or more dimension ids or names, as returned by the /chart call, separated with comma or pipe. Netdata simple patterns are supported.",
@@ -156,7 +167,7 @@
           {
             "name": "after",
             "in": "query",
-            "description": "This parameter can either be an absolute timestamp specifying the starting point of the data to be returned, or a relative number of seconds (negative, relative to parameter: before). Netdata will assume it is a relative number if it is less that 3 years (in seconds). Netdata will adapt this parameter to the boundaries of the round robin database. The default is the beginning of the round robin database (i.e. by default netdata will attempt to return data for the entire database).",
+            "description": "This parameter can either be an absolute timestamp specifying the starting point of the data to be returned, or a relative number of seconds (negative, relative to parameter: before). Netdata will assume it is a relative number if it is less that 3 years (in seconds). If not specified the default is -600 seconds. Netdata will adapt this parameter to the boundaries of the round robin database unless the allow_past option is specified.",
             "required": true,
             "allowEmptyValue": false,
             "schema": {
@@ -273,7 +284,8 @@
                   "unaligned",
                   "match-ids",
                   "match-names",
-                  "showcustomvars"
+                  "showcustomvars",
+                  "allow_past"
                 ]
               },
               "default": [
@@ -328,7 +340,7 @@
             "description": "Bad request - the body will include a message stating what is wrong."
           },
           "404": {
-            "description": "No chart with the given id is found."
+            "description": "Chart or context is not found. The supplied chart or context will be reported."
           },
           "500": {
             "description": "Internal server error. This usually means the server is out of memory."
@@ -338,7 +350,7 @@
     },
     "/badge.svg": {
       "get": {
-        "summary": "Generate a SVG image for a chart (or dimension)",
+        "summary": "Generate a badge in form of SVG image for a chart (or dimension)",
         "description": "Successful responses are SVG images.",
         "parameters": [
           {
@@ -471,18 +483,38 @@
           {
             "name": "label_color",
             "in": "query",
-            "description": "A color to be used for the background of the label.",
+            "description": "A color to be used for the background of the label side(left side) of the badge. One of predefined colors or specific color in hex `RGB` or `RRGGBB` format (without preceding `#` character). If value wrong or not given default color will be used.",
             "required": false,
             "allowEmptyValue": true,
             "schema": {
-              "type": "string",
-              "format": "any text"
+              "oneOf": [
+                {
+                  "type": "string",
+                  "enum": [
+                    "green",
+                    "brightgreen",
+                    "yellow",
+                    "yellowgreen",
+                    "orange",
+                    "red",
+                    "blue",
+                    "grey",
+                    "gray",
+                    "lightgrey",
+                    "lightgray"
+                  ]
+                },
+                {
+                  "type": "string",
+                  "format": "^([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$"
+                }
+              ]
             }
           },
           {
             "name": "value_color",
             "in": "query",
-            "description": "A color to be used for the background of the label. You can set multiple using a pipe with a condition each, like this: colorvalue|color:null The following operators are supported: >, <, >=, <=, =, :null (to check if no value exists).",
+            "description": "A color to be used for the background of the value *(right)* part of badge. You can set multiple using a pipe with a condition each, like this: `color<value|color:null` The following operators are supported: >, <, >=, <=, =, :null (to check if no value exists). Each color can be specified in same manner as for `label_color` parameter. Currently only integers are suported as values.",
             "required": false,
             "allowEmptyValue": true,
             "schema": {
@@ -491,6 +523,68 @@
             }
           },
           {
+            "name": "text_color_lbl",
+            "in": "query",
+            "description": "Font color for label *(left)* part of the badge. One of predefined colors or as HTML hexadecimal color without preceeding `#` character. Formats allowed `RGB` or `RRGGBB`. If no or wrong value given default color will be used.",
+            "required": false,
+            "allowEmptyValue": true,
+            "schema": {
+              "oneOf": [
+                {
+                  "type": "string",
+                  "enum": [
+                    "green",
+                    "brightgreen",
+                    "yellow",
+                    "yellowgreen",
+                    "orange",
+                    "red",
+                    "blue",
+                    "grey",
+                    "gray",
+                    "lightgrey",
+                    "lightgray"
+                  ]
+                },
+                {
+                  "type": "string",
+                  "format": "^([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$"
+                }
+              ]
+            }
+          },
+          {
+            "name": "text_color_val",
+            "in": "query",
+            "description": "Font color for value *(right)* part of the badge. One of predefined colors or as HTML hexadecimal color without preceeding `#` character. Formats allowed `RGB` or `RRGGBB`. If no or wrong value given default color will be used.",
+            "required": false,
+            "allowEmptyValue": true,
+            "schema": {
+              "oneOf": [
+                {
+                  "type": "string",
+                  "enum": [
+                    "green",
+                    "brightgreen",
+                    "yellow",
+                    "yellowgreen",
+                    "orange",
+                    "red",
+                    "blue",
+                    "grey",
+                    "gray",
+                    "lightgrey",
+                    "lightgray"
+                  ]
+                },
+                {
+                  "type": "string",
+                  "format": "^([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$"
+                }
+              ]
+            }
+          },
+          {
             "name": "multiply",
             "in": "query",
             "description": "Multiply the value with this number for rendering it at the image (integer value required).",
@@ -522,6 +616,28 @@
               "type": "number",
               "format": "integer"
             }
+          },
+          {
+            "name": "fixed_width_lbl",
+            "in": "query",
+            "description": "This parameter overrides auto-sizing of badge and creates it with fixed width. This parameter determines the size of the label's left side *(label/name)*. You must set this parameter together with `fixed_width_val` otherwise it will be ignored. You should set the label/value widths wide enough to provide space for all the possible values/contents of the badge you're requesting. In case the text cannot fit the space given it will be clipped. The `scale` parameter still applies on the values you give to `fixed_width_lbl` and `fixed_width_val`.",
+            "required": false,
+            "allowEmptyValue": false,
+            "schema": {
+              "type": "number",
+              "format": "integer"
+            }
+          },
+          {
+            "name": "fixed_width_val",
+            "in": "query",
+            "description": "This parameter overrides auto-sizing of badge and creates it with fixed width. This parameter determines the size of the label's right side *(value)*. You must set this parameter together with `fixed_width_lbl` otherwise it will be ignored. You should set the label/value widths wide enough to provide space for all the possible values/contents of the badge you're requesting. In case the text cannot fit the space given it will be clipped. The `scale` parameter still applies on the values you give to `fixed_width_lbl` and `fixed_width_val`.",
+            "required": false,
+            "allowEmptyValue": false,
+            "schema": {
+              "type": "number",
+              "format": "integer"
+            }
           }
         ],
         "responses": {
@@ -562,6 +678,20 @@
             }
           },
           {
+            "name": "variables",
+            "in": "query",
+            "description": "When enabled, netdata will expose various system configuration metrics.",
+            "required": false,
+            "schema": {
+              "type": "string",
+              "enum": [
+                "yes",
+                "no"
+              ],
+              "default": "no"
+            }
+          },
+          {
             "name": "help",
             "in": "query",
             "description": "Enable or disable HELP lines in prometheus output.",
@@ -705,6 +835,16 @@
             "schema": {
               "type": "boolean"
             }
+          },
+          {
+            "name": "active",
+            "in": "query",
+            "description": "If passed, the raised alarms in state WARNING or CRITICAL are returned.",
+            "required": false,
+            "allowEmptyValue": true,
+            "schema": {
+              "type": "boolean"
+            }
           }
         ],
         "responses": {
@@ -721,6 +861,46 @@
         }
       }
     },
+    "/alarms_values": {
+      "get": {
+        "summary": "Get a list of active or raised alarms on the server",
+        "description": "The alarms_values endpoint returns the list of all raised or enabled alarms on the netdata server. Called without any parameters, the raised alarms in state WARNING or CRITICAL are returned. By passing \"?all\", all the enabled alarms are returned. This option output differs from `/alarms` in the number of variables delivered. This endpoint gives to user `id`, `value` and alarm `status`.",
+        "parameters": [
+          {
+            "name": "all",
+            "in": "query",
+            "description": "If passed, all enabled alarms are returned.",
+            "required": false,
+            "allowEmptyValue": true,
+            "schema": {
+              "type": "boolean"
+            }
+          },
+          {
+            "name": "active",
+            "in": "query",
+            "description": "If passed, the raised alarms in state WARNING or CRITICAL are returned.",
+            "required": false,
+            "allowEmptyValue": true,
+            "schema": {
+              "type": "boolean"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "An object containing general info and a linked list of alarms.",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/alarms_values"
+                }
+              }
+            }
+          }
+        }
+      }
+    },
     "/alarm_log": {
       "get": {
         "summary": "Retrieves the entries of the alarm log",
@@ -923,6 +1103,35 @@
               "host2.example.com"
             ]
           },
+          "mirrored_hosts_status": {
+            "type": "array",
+            "description": "List of details of hosts mirrored to this served (including self). Indexes correspond to indexes in \"mirrored_hosts\".",
+            "items": {
+              "type": "object",
+              "description": "Host data",
+              "properties": {
+                "guid": {
+                  "type": "string",
+                  "format": "uuid",
+                  "nullable": false,
+                  "description": "Host unique GUID from `netdata.public.unique.id`.",
+                  "example": "245e4bff-3b34-47c1-a6e5-5c535a9abfb2"
+                },
+                "reachable": {
+                  "type": "boolean",
+                  "nullable": false,
+                  "description": "Current state of streaming. Always true for localhost/self."
+                },
+                "claim_id": {
+                  "type": "string",
+                  "format": "uuid",
+                  "nullable": true,
+                  "description": "Cloud GUID/identifier in case the host is claimed. If child status unknown or unclaimed this field is set to `null`",
+                  "example": "c3b2a66a-3052-498c-ac52-7fe9e8cccb0c"
+                }
+              }
+            }
+          },
           "os_name": {
             "type": "string",
             "description": "Operating System Name.",
@@ -963,6 +1172,11 @@
             "description": "Kernel Version.",
             "example": "4.19.32-1-MANJARO"
           },
+          "is_k8s_node": {
+            "type": "boolean",
+            "description": "Netdata is running on a K8s node.",
+            "example": false
+          },
           "architecture": {
             "type": "string",
             "description": "Kernel architecture.",
@@ -988,6 +1202,17 @@
             "description": "Container technology detection method.",
             "example": "dockerenv"
           },
+          "labels": {
+            "type": "object",
+            "description": "List of host labels.",
+            "properties": {
+              "app": {
+                "type": "string",
+                "description": "Host label.",
+                "example": "netdata"
+              }
+            }
+          },
           "collectors": {
             "type": "array",
             "items": {
@@ -1798,6 +2023,42 @@
             "nullable": true
           }
         }
+      },
+      "alarms_values": {
+        "type": "object",
+        "properties": {
+          "hostname": {
+            "type": "string"
+          },
+          "alarms": {
+            "type": "object",
+            "description": "HashMap with keys being alarm names",
+            "additionalProperties": {
+              "type": "object",
+              "properties": {
+                "id": {
+                  "type": "integer"
+                },
+                "value": {
+                  "type": "integer"
+                },
+                "status": {
+                  "type": "string",
+                  "enum": [
+                    "REMOVED",
+                    "UNDEFINED",
+                    "UNINITIALIZED",
+                    "CLEAR",
+                    "RAISED",
+                    "WARNING",
+                    "CRITICAL",
+                    "UNKNOWN"
+                  ]
+                }
+              }
+            }
+          }
+        }
       }
     }
   }
diff --git a/web/api/netdata-swagger.yaml b/web/api/netdata-swagger.yaml
index 78644a76..74827421 100644
--- a/web/api/netdata-swagger.yaml
+++ b/web/api/netdata-swagger.yaml
@@ -12,7 +12,7 @@ paths:
         * netdata version
         * netdata unique id
         * list of hosts mirrored (includes itself)
-        * Operating System, Virtualization and Container technology information
+        * Operating System, Virtualization, K8s nodes and Container technology information
         * List of active collector plugins and modules
         * number of alarms in the host
           * number of alarms in normal state
@@ -101,13 +101,21 @@ paths:
       parameters:
         - name: chart
           in: query
-          description: The id of the chart as returned by the /charts call.
-          required: true
+          description: The id of the chart as returned by the /charts call. Note chart or context must be specified
+          required: false
           allowEmptyValue: false
           schema:
             type: string
             format: as returned by /charts
             default: system.cpu
+        - name: context
+          in: query
+          description: The context of the chart as returned by the /charts call. Note chart or context must be specified
+          required: false
+          allowEmptyValue: false
+          schema:
+            type: string
+            format: as returned by /charts
         - name: dimension
           in: query
           description: Zero, one or more dimension ids or names, as returned by the /chart
@@ -125,11 +133,10 @@ paths:
           description: "This parameter can either be an absolute timestamp specifying the
             starting point of the data to be returned, or a relative number of
             seconds (negative, relative to parameter: before). Netdata will
-            assume it is a relative number if it is less that 3 years (in
-            seconds). Netdata will adapt this parameter to the boundaries of the
-            round robin database. The default is the beginning of the round
-            robin database (i.e. by default netdata will attempt to return data
-            for the entire database)."
+            assume it is a relative number if it is less that 3 years (in seconds).
+            If not specified the default is -600 seconds. Netdata will adapt this
+            parameter to the boundaries of the round robin database unless the allow_past
+            option is specified."
           required: true
           allowEmptyValue: false
           schema:
@@ -243,6 +250,7 @@ paths:
                 - match-ids
                 - match-names
                 - showcustomvars
+                - allow_past
             default:
               - seconds
               - jsonwrap
@@ -285,13 +293,13 @@ paths:
         "400":
           description: Bad request - the body will include a message stating what is wrong.
         "404":
-          description: No chart with the given id is found.
+          description: Chart or context is not found. The supplied chart or context will be reported.
         "500":
           description: Internal server error. This usually means the server is out of
             memory.
   /badge.svg:
     get:
-      summary: Generate a SVG image for a chart (or dimension)
+      summary: Generate a badge in form of SVG image for a chart (or dimension)
       description: Successful responses are SVG images.
       parameters:
         - name: chart
@@ -410,23 +418,82 @@ paths:
             format: any text
         - name: label_color
           in: query
-          description: A color to be used for the background of the label.
+          description: A color to be used for the background of the label side(left side) of the badge. One of predefined colors or specific color in hex `RGB` or `RRGGBB` format (without preceding `#` character). If value wrong or not given default color will be used.
           required: false
           allowEmptyValue: true
           schema:
-            type: string
-            format: any text
+            oneOf:
+              - type: string
+                enum:
+                  - green
+                  - brightgreen
+                  - yellow
+                  - yellowgreen
+                  - orange
+                  - red
+                  - blue
+                  - grey
+                  - gray
+                  - lightgrey
+                  - lightgray
+              - type: string
+                format: ^([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$
         - name: value_color
           in: query
-          description: "A color to be used for the background of the label. You can set
+          description: "A color to be used for the background of the value *(right)* part of badge. You can set
             multiple using a pipe with a condition each, like this:
-            colorvalue|color:null The following operators are
-            supported: >, <, >=, <=, =, :null (to check if no value exists)."
+            `color<value|color:null` The following operators are
+            supported: >, <, >=, <=, =, :null (to check if no value exists). Each color can be specified in same manner as for `label_color` parameter.
+            Currently only integers are suported as values."
           required: false
           allowEmptyValue: true
           schema:
             type: string
             format: any text
+        - name: text_color_lbl
+          in: query
+          description: Font color for label *(left)* part of the badge. One of predefined colors or as HTML hexadecimal color without preceeding `#` character. Formats allowed `RGB` or `RRGGBB`. If no or wrong value given default color will be used.
+          required: false
+          allowEmptyValue: true
+          schema:
+           oneOf:
+              - type: string
+                enum:
+                  - green
+                  - brightgreen
+                  - yellow
+                  - yellowgreen
+                  - orange
+                  - red
+                  - blue
+                  - grey
+                  - gray
+                  - lightgrey
+                  - lightgray
+              - type: string
+                format: ^([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$
+        - name: text_color_val
+          in: query
+          description: Font color for value *(right)* part of the badge. One of predefined colors or as HTML hexadecimal color without preceeding `#` character. Formats allowed `RGB` or `RRGGBB`. If no or wrong value given default color will be used.
+          required: false
+          allowEmptyValue: true
+          schema:
+           oneOf:
+              - type: string
+                enum:
+                  - green
+                  - brightgreen
+                  - yellow
+                  - yellowgreen
+                  - orange
+                  - red
+                  - blue
+                  - grey
+                  - gray
+                  - lightgrey
+                  - lightgray
+              - type: string
+                format: ^([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$
         - name: multiply
           in: query
           description: Multiply the value with this number for rendering it at the image
@@ -453,6 +520,22 @@ paths:
           schema:
             type: number
             format: integer
+        - name: fixed_width_lbl
+          in: query
+          description: This parameter overrides auto-sizing of badge and creates it with fixed width. This parameter determines the size of the label's left side *(label/name)*. You must set this parameter together with `fixed_width_val` otherwise it will be ignored. You should set the label/value widths wide enough to provide space for all the possible values/contents of the badge you're requesting. In case the text cannot fit the space given it will be clipped. The `scale` parameter still applies on the values you give to `fixed_width_lbl` and `fixed_width_val`.
+          required: false
+          allowEmptyValue: false
+          schema:
+            type: number
+            format: integer
+        - name: fixed_width_val
+          in: query
+          description: This parameter overrides auto-sizing of badge and creates it with fixed width. This parameter determines the size of the label's right side *(value)*. You must set this parameter together with `fixed_width_lbl` otherwise it will be ignored. You should set the label/value widths wide enough to provide space for all the possible values/contents of the badge you're requesting. In case the text cannot fit the space given it will be clipped. The `scale` parameter still applies on the values you give to `fixed_width_lbl` and `fixed_width_val`.
+          required: false
+          allowEmptyValue: false
+          schema:
+            type: number
+            format: integer
       responses:
         "200":
           description: The call was successful. The response should be an SVG image.
@@ -481,6 +564,17 @@ paths:
               - prometheus_all_hosts
               - json
             default: shell
+        - name: variables
+          in: query
+          description: When enabled, netdata will expose various system
+            configuration metrics.
+          required: false
+          schema:
+            type: string
+            enum:
+              - yes
+              - no
+            default: no
         - name: help
           in: query
           description: Enable or disable HELP lines in prometheus output.
@@ -593,6 +687,13 @@ paths:
           allowEmptyValue: true
           schema:
             type: boolean
+        - name: active
+          in: query
+          description: If passed, the raised alarms in state WARNING or CRITICAL are returned.
+          required: false
+          allowEmptyValue: true
+          schema:
+            type: boolean
       responses:
         "200":
           description: An object containing general info and a linked list of alarms.
@@ -600,6 +701,37 @@ paths:
             application/json:
               schema:
                 $ref: "#/components/schemas/alarms"
+  /alarms_values:
+    get:
+      summary: Get a list of active or raised alarms on the server
+      description: The alarms_values endpoint returns the list of all raised or enabled alarms on
+        the netdata server. Called without any parameters, the raised alarms in
+        state WARNING or CRITICAL are returned. By passing "?all", all the
+        enabled alarms are returned.
+        This option output differs from `/alarms` in the number of variables delivered. This endpoint gives
+        to user `id`, `value` and alarm `status`.
+      parameters:
+        - name: all
+          in: query
+          description: If passed, all enabled alarms are returned.
+          required: false
+          allowEmptyValue: true
+          schema:
+            type: boolean
+        - name: active
+          in: query
+          description: If passed, the raised alarms in state WARNING or CRITICAL are returned.
+          required: false
+          allowEmptyValue: true
+          schema:
+            type: boolean
+      responses:
+        "200":
+          description: An object containing general info and a linked list of alarms.
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/alarms_values"
   /alarm_log:
     get:
       summary: Retrieves the entries of the alarm log
@@ -757,6 +889,33 @@ components:
           example:
             - host1.example.com
             - host2.example.com
+        mirrored_hosts_status:
+          type: array
+          description: >-
+            List of details of hosts mirrored to this served (including self).
+            Indexes correspond to indexes in "mirrored_hosts".
+          items:
+            type: object
+            description: Host data
+            properties:
+              guid:
+                type: string
+                format: uuid
+                nullable: false
+                description: Host unique GUID from `netdata.public.unique.id`.
+                example: 245e4bff-3b34-47c1-a6e5-5c535a9abfb2
+              reachable:
+                type: boolean
+                nullable: false
+                description: Current state of streaming. Always true for localhost/self.
+              claim_id:
+                type: string
+                format: uuid
+                nullable: true
+                description: >-
+                  Cloud GUID/identifier in case the host is claimed.
+                  If child status unknown or unclaimed this field is set to `null`
+                example: c3b2a66a-3052-498c-ac52-7fe9e8cccb0c
         os_name:
           type: string
           description: Operating System Name.
@@ -789,6 +948,10 @@ components:
           type: string
           description: Kernel Version.
           example: 4.19.32-1-MANJARO
+        is_k8s_node:
+          type: boolean
+          description: Netdata is running on a K8s node.
+          example: false
         architecture:
           type: string
           description: Kernel architecture.
@@ -809,6 +972,14 @@ components:
           type: string
           description: Container technology detection method.
           example: dockerenv
+        labels:
+          type: object
+          description: List of host labels.
+          properties:
+            app:
+              type: string
+              description: Host label.
+              example: netdata
         collectors:
           type: array
           items:
@@ -1412,3 +1583,29 @@ components:
         old_value:
           type: number
           nullable: true
+    alarms_values:
+      type: object
+      properties:
+        hostname:
+          type: string
+        alarms:
+          type: object
+          description: HashMap with keys being alarm names
+          additionalProperties:
+            type: object
+            properties:
+              id:
+                type: integer
+              value:
+                type: integer
+              status:
+                type: string
+                enum:
+                  - REMOVED
+                  - UNDEFINED
+                  - UNINITIALIZED
+                  - CLEAR
+                  - RAISED
+                  - WARNING
+                  - CRITICAL
+                  - UNKNOWN
diff --git a/web/api/queries/Makefile.in b/web/api/queries/Makefile.in
deleted file mode 100644
index b339c117..00000000
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diff --git a/web/api/queries/README.md b/web/api/queries/README.md
index 458179c7..31ec4965 100644
--- a/web/api/queries/README.md
+++ b/web/api/queries/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "Database Queries"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/queries/README.md
+-->
+
 # Database Queries
 
 Netdata database can be queried with `/api/v1/data` and `/api/v1/badge.svg` REST API methods.
@@ -83,7 +88,7 @@ To disable alignment, pass `&options=unaligned` to the query.
 
 To execute the query, the engine evaluates all dimensions of the chart, one after another.
 
-The engine does not evaluate dimensions that do not match the [simple pattern](../../../libnetdata/simple_pattern)
+The engine does not evaluate dimensions that do not match the [simple pattern](/libnetdata/simple_pattern/README.md)
 given at the `dimensions` parameter, except when `options=percentage` is given (this option
 requires all the dimensions to be evaluated to find the percentage of each dimension vs to chart
 total).
diff --git a/web/api/queries/average/Makefile.in b/web/api/queries/average/Makefile.in
deleted file mode 100644
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+++ /dev/null
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diff --git a/web/api/queries/average/README.md b/web/api/queries/average/README.md
index 6b2c0dfa..f32a6757 100644
--- a/web/api/queries/average/README.md
+++ b/web/api/queries/average/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "Average or Mean"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/queries/average/README.md
+-->
+
 # Average or Mean
 
 > This query is available as `average` and `mean`.
diff --git a/web/api/queries/des/Makefile.in b/web/api/queries/des/Makefile.in
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diff --git a/web/api/queries/des/README.md b/web/api/queries/des/README.md
index 57ac805d..5505de5a 100644
--- a/web/api/queries/des/README.md
+++ b/web/api/queries/des/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "double exponential smoothing"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/queries/des/README.md
+-->
+
 # double exponential smoothing
 
 Exponential smoothing is one of many window functions commonly applied to smooth data in signal
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diff --git a/web/api/queries/incremental_sum/README.md b/web/api/queries/incremental_sum/README.md
index 10878890..e5f3dfc0 100644
--- a/web/api/queries/incremental_sum/README.md
+++ b/web/api/queries/incremental_sum/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "Incremental Sum (`incremental_sum`)"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/queries/incremental_sum/README.md
+-->
+
 # Incremental Sum (`incremental_sum`)
 
 This modules finds the incremental sum of a period, which `last value - first value`.
diff --git a/web/api/queries/max/Makefile.in b/web/api/queries/max/Makefile.in
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diff --git a/web/api/queries/max/README.md b/web/api/queries/max/README.md
index b0f6f648..32b1d434 100644
--- a/web/api/queries/max/README.md
+++ b/web/api/queries/max/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "Max"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/queries/max/README.md
+-->
+
 # Max
 
 This module finds the max value in the time-frame given.
diff --git a/web/api/queries/median/Makefile.in b/web/api/queries/median/Makefile.in
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diff --git a/web/api/queries/median/README.md b/web/api/queries/median/README.md
index a6980124..25ce8b8d 100644
--- a/web/api/queries/median/README.md
+++ b/web/api/queries/median/README.md
@@ -1,3 +1,9 @@
+<!--
+title: "Median"
+description: "Use median in API queries and health entities to find the 'middle' value from a sample, eliminating any unwanted spikes in the returned metrics."
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/queries/median/README.md
+-->
+
 # Median
 
 The median is the value separating the higher half from the lower half of a data sample
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-	@for dep in $?; do \
-	  case '$(am__configure_deps)' in \
-	    *$$dep*) \
-	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
-	        && { if test -f $@; then exit 0; else break; fi; }; \
-	      exit 1;; \
-	  esac; \
-	done; \
-	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu web/api/queries/min/Makefile'; \
-	$(am__cd) $(top_srcdir) && \
-	  $(AUTOMAKE) --gnu web/api/queries/min/Makefile
-Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
-	@case '$?' in \
-	  *config.status*) \
-	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
-	  *) \
-	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
-	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
-	esac;
-
-$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
-	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
-
-$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
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-	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
-$(am__aclocal_m4_deps):
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-distdir: $(DISTFILES)
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-	list='$(DISTFILES)'; \
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-	  sed -e "s|^$$srcdirstrip/||;t" \
-	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
-	case $$dist_files in \
-	  */*) $(MKDIR_P) `echo "$$dist_files" | \
-			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
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-	esac; \
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-	done
-check-am: all-am
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-.PRECIOUS: Makefile
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-# Tell versions [3.59,3.63) of GNU make to not export all variables.
-# Otherwise a system limit (for SysV at least) may be exceeded.
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diff --git a/web/api/queries/min/README.md b/web/api/queries/min/README.md
index 6276faec..69ef4ea1 100644
--- a/web/api/queries/min/README.md
+++ b/web/api/queries/min/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "Min"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/queries/min/README.md
+-->
+
 # Min
 
 This module finds the min value in the time-frame given.
diff --git a/web/api/queries/query.c b/web/api/queries/query.c
index b0eb826d..3b9077cd 100644
--- a/web/api/queries/query.c
+++ b/web/api/queries/query.c
@@ -281,7 +281,7 @@ RRDR_GROUPING web_client_api_request_v1_data_group(const char *name, RRDR_GROUPI
 
 // ----------------------------------------------------------------------------
 
-static void rrdr_disable_not_selected_dimensions(RRDR *r, RRDR_OPTIONS options, const char *dims) {
+static void rrdr_disable_not_selected_dimensions(RRDR *r, RRDR_OPTIONS options, const char *dims, RRDDIM *temp_rd) {
     rrdset_check_rdlock(r->st);
 
     if(unlikely(!dims || !*dims || (dims[0] == '*' && dims[1] == '\0'))) return;
@@ -300,7 +300,7 @@ static void rrdr_disable_not_selected_dimensions(RRDR *r, RRDR_OPTIONS options,
 
     RRDDIM *d;
     long c, dims_selected = 0, dims_not_hidden_not_zero = 0;
-    for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
+    for(c = 0, d = temp_rd?temp_rd:r->st->dimensions; d ;c++, d = d->next) {
         if(    (match_ids   && simple_pattern_matches(pattern, d->id))
                || (match_names && simple_pattern_matches(pattern, d->name))
                 ) {
@@ -332,7 +332,7 @@ static void rrdr_disable_not_selected_dimensions(RRDR *r, RRDR_OPTIONS options,
         // but they are all zero
         // enable the selected ones
         // to avoid returning an empty chart
-        for(c = 0, d = r->st->dimensions; d ;c++, d = d->next)
+        for(c = 0, d = temp_rd?temp_rd:r->st->dimensions; d ;c++, d = d->next)
             if(unlikely(r->od[c] & RRDR_DIMENSION_SELECTED))
                 r->od[c] |= RRDR_DIMENSION_NONZERO;
     }
@@ -573,6 +573,12 @@ static inline void do_dimension_fixedstep(
 #endif
         db_now = now; // this is needed to set db_now in case the next_metric implementation does not set it
         storage_number n = rd->state->query_ops.next_metric(&handle, &db_now);
+        if(unlikely(db_now > before_wanted)) {
+#ifdef NETDATA_INTERNAL_CHECKS
+            r->internal.log = "stopped, because attempted to access the db after 'wanted before'";
+#endif
+            break;
+        }
         for ( ; now <= db_now ; now += dt) {
             calculated_number value = NAN;
             if(likely(now >= db_now && does_storage_number_exist(n))) {
@@ -673,6 +679,7 @@ static void rrd2rrdr_log_request_response_metdata(RRDR *r
         //, size_t before_slot
         , const char *msg
         ) {
+    netdata_rwlock_rdlock(&r->st->rrdset_rwlock);
     info("INTERNAL ERROR: rrd2rrdr() on %s update every %d with %s grouping %s (group: %ld, resampling_time: %ld, resampling_group: %ld), "
          "after (got: %zu, want: %zu, req: %zu, db: %zu), "
          "before (got: %zu, want: %zu, req: %zu, db: %zu), "
@@ -694,19 +701,19 @@ static void rrd2rrdr_log_request_response_metdata(RRDR *r
          , (size_t)r->after
          , (size_t)after_wanted
          , (size_t)after_requested
-         , (size_t)rrdset_first_entry_t(r->st)
+         , (size_t)rrdset_first_entry_t_nolock(r->st)
 
          // before
          , (size_t)r->before
          , (size_t)before_wanted
          , (size_t)before_requested
-         , (size_t)rrdset_last_entry_t(r->st)
+         , (size_t)rrdset_last_entry_t_nolock(r->st)
 
          // duration
          , (size_t)(r->before - r->after + r->st->update_every)
          , (size_t)(before_wanted - after_wanted + r->st->update_every)
          , (size_t)(before_requested - after_requested)
-         , (size_t)((rrdset_last_entry_t(r->st) - rrdset_first_entry_t(r->st)) + r->st->update_every)
+         , (size_t)((rrdset_last_entry_t_nolock(r->st) - rrdset_first_entry_t_nolock(r->st)) + r->st->update_every)
 
          // slot
          /*
@@ -724,6 +731,7 @@ static void rrd2rrdr_log_request_response_metdata(RRDR *r
          // message
          , msg
     );
+    netdata_rwlock_unlock(&r->st->rrdset_rwlock);
 }
 #endif // NETDATA_INTERNAL_CHECKS
 
@@ -734,6 +742,7 @@ static int rrdr_convert_before_after_to_absolute(
         , int update_every
         , time_t first_entry_t
         , time_t last_entry_t
+        , RRDR_OPTIONS options
 ) {
     int absolute_period_requested = -1;
     long long after_requested, before_requested;
@@ -779,10 +788,12 @@ static int rrdr_convert_before_after_to_absolute(
 
     // make sure they are within our timeframe
     if(before_requested > last_entry_t)  before_requested = last_entry_t;
-    if(before_requested < first_entry_t) before_requested = first_entry_t;
+    if(before_requested < first_entry_t && !(options & RRDR_OPTION_ALLOW_PAST))
+        before_requested = first_entry_t;
 
     if(after_requested > last_entry_t)  after_requested = last_entry_t;
-    if(after_requested < first_entry_t) after_requested = first_entry_t;
+    if(after_requested < first_entry_t && !(options & RRDR_OPTION_ALLOW_PAST))
+        after_requested = first_entry_t;
 
     // check if they are reversed
     if(after_requested > before_requested) {
@@ -810,6 +821,7 @@ static RRDR *rrd2rrdr_fixedstep(
         , time_t first_entry_t
         , time_t last_entry_t
         , int absolute_period_requested
+        , struct context_param *context_param_list
 ) {
     int aligned = !(options & RRDR_OPTION_NOT_ALIGNED);
 
@@ -817,8 +829,10 @@ static RRDR *rrd2rrdr_fixedstep(
     time_t duration = before_requested - after_requested;
     long available_points = duration / update_every;
 
+    RRDDIM *temp_rd = context_param_list ? context_param_list->rd : NULL;
+
     if(duration <= 0 || available_points <= 0)
-        return rrdr_create(st, 1);
+        return rrdr_create(st, 1, context_param_list);
 
     // check the number of wanted points in the result
     if(unlikely(points_requested < 0)) points_requested = -points_requested;
@@ -976,7 +990,7 @@ static RRDR *rrd2rrdr_fixedstep(
     // initialize our result set
     // this also locks the chart for us
 
-    RRDR *r = rrdr_create(st, points_wanted);
+    RRDR *r = rrdr_create(st, points_wanted, context_param_list);
     if(unlikely(!r)) {
         #ifdef NETDATA_INTERNAL_CHECKS
         error("INTERNAL CHECK: Cannot create RRDR for %s, after=%u, before=%u, duration=%u, points=%ld", st->id, (uint32_t)after_wanted, (uint32_t)before_wanted, (uint32_t)duration, points_wanted);
@@ -1049,7 +1063,7 @@ static RRDR *rrd2rrdr_fixedstep(
     rrdset_check_rdlock(st);
 
     if(dimensions)
-        rrdr_disable_not_selected_dimensions(r, options, dimensions);
+        rrdr_disable_not_selected_dimensions(r, options, dimensions, temp_rd);
 
 
     // -------------------------------------------------------------------------
@@ -1060,7 +1074,7 @@ static RRDR *rrd2rrdr_fixedstep(
 
     RRDDIM *rd;
     long c, dimensions_used = 0, dimensions_nonzero = 0;
-    for(rd = st->dimensions, c = 0 ; rd && c < dimensions_count ; rd = rd->next, c++) {
+    for(rd = temp_rd?temp_rd:st->dimensions, c = 0 ; rd && c < dimensions_count ; rd = rd->next, c++) {
 
         // if we need a percentage, we need to calculate all dimensions
         if(unlikely(!(options & RRDR_OPTION_PERCENTAGE) && (r->od[c] & RRDR_DIMENSION_HIDDEN))) {
@@ -1153,7 +1167,7 @@ static RRDR *rrd2rrdr_fixedstep(
     if(unlikely(options & RRDR_OPTION_NONZERO && !dimensions_nonzero)) {
         // all the dimensions are zero
         // mark them as NONZERO to send them all
-        for(rd = st->dimensions, c = 0 ; rd && c < dimensions_count ; rd = rd->next, c++) {
+        for(rd = temp_rd?temp_rd:st->dimensions, c = 0 ; rd && c < dimensions_count ; rd = rd->next, c++) {
             if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
             r->od[c] |= RRDR_DIMENSION_NONZERO;
         }
@@ -1178,6 +1192,7 @@ static RRDR *rrd2rrdr_variablestep(
         , time_t last_entry_t
         , int absolute_period_requested
         , struct rrdeng_region_info *region_info_array
+        , struct context_param *context_param_list
 ) {
     int aligned = !(options & RRDR_OPTION_NOT_ALIGNED);
 
@@ -1185,9 +1200,11 @@ static RRDR *rrd2rrdr_variablestep(
     time_t duration = before_requested - after_requested;
     long available_points = duration / update_every;
 
+    RRDDIM *temp_rd = context_param_list ? context_param_list->rd : NULL;
+
     if(duration <= 0 || available_points <= 0) {
         freez(region_info_array);
-        return rrdr_create(st, 1);
+        return rrdr_create(st, 1, context_param_list);
     }
 
     // check the number of wanted points in the result
@@ -1346,7 +1363,7 @@ static RRDR *rrd2rrdr_variablestep(
     // initialize our result set
     // this also locks the chart for us
 
-    RRDR *r = rrdr_create(st, points_wanted);
+    RRDR *r = rrdr_create(st, points_wanted, context_param_list);
     if(unlikely(!r)) {
         #ifdef NETDATA_INTERNAL_CHECKS
         error("INTERNAL CHECK: Cannot create RRDR for %s, after=%u, before=%u, duration=%u, points=%ld", st->id, (uint32_t)after_wanted, (uint32_t)before_wanted, (uint32_t)duration, points_wanted);
@@ -1422,7 +1439,7 @@ static RRDR *rrd2rrdr_variablestep(
     rrdset_check_rdlock(st);
 
     if(dimensions)
-        rrdr_disable_not_selected_dimensions(r, options, dimensions);
+        rrdr_disable_not_selected_dimensions(r, options, dimensions, temp_rd);
 
 
     // -------------------------------------------------------------------------
@@ -1433,7 +1450,7 @@ static RRDR *rrd2rrdr_variablestep(
 
     RRDDIM *rd;
     long c, dimensions_used = 0, dimensions_nonzero = 0;
-    for(rd = st->dimensions, c = 0 ; rd && c < dimensions_count ; rd = rd->next, c++) {
+    for(rd = temp_rd?temp_rd:st->dimensions, c = 0 ; rd && c < dimensions_count ; rd = rd->next, c++) {
 
         // if we need a percentage, we need to calculate all dimensions
         if(unlikely(!(options & RRDR_OPTION_PERCENTAGE) && (r->od[c] & RRDR_DIMENSION_HIDDEN))) {
@@ -1527,7 +1544,7 @@ static RRDR *rrd2rrdr_variablestep(
     if(unlikely(options & RRDR_OPTION_NONZERO && !dimensions_nonzero)) {
         // all the dimensions are zero
         // mark them as NONZERO to send them all
-        for(rd = st->dimensions, c = 0 ; rd && c < dimensions_count ; rd = rd->next, c++) {
+        for(rd = temp_rd?temp_rd:st->dimensions, c = 0 ; rd && c < dimensions_count ; rd = rd->next, c++) {
             if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
             r->od[c] |= RRDR_DIMENSION_NONZERO;
         }
@@ -1548,16 +1565,32 @@ RRDR *rrd2rrdr(
         , long resampling_time_requested
         , RRDR_OPTIONS options
         , const char *dimensions
-) {
+        , struct context_param *context_param_list
+)
+{
     int rrd_update_every;
     int absolute_period_requested;
-    time_t first_entry_t = rrdset_first_entry_t(st);
-    time_t last_entry_t  = rrdset_last_entry_t(st);
+
+    time_t first_entry_t;
+    time_t last_entry_t;
+    if (context_param_list) {
+        first_entry_t = context_param_list->first_entry_t;
+        last_entry_t = context_param_list->last_entry_t;
+    } else {
+        rrdset_rdlock(st);
+        first_entry_t = rrdset_first_entry_t_nolock(st);
+        last_entry_t = rrdset_last_entry_t_nolock(st);
+        rrdset_unlock(st);
+    }
 
     rrd_update_every = st->update_every;
     absolute_period_requested = rrdr_convert_before_after_to_absolute(&after_requested, &before_requested,
                                                                       rrd_update_every, first_entry_t,
-                                                                      last_entry_t);
+                                                                      last_entry_t, options);
+    if (options & RRDR_OPTION_ALLOW_PAST)
+        if (first_entry_t > after_requested)
+            first_entry_t = after_requested;
+
 #ifdef ENABLE_DBENGINE
     if (st->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) {
         struct rrdeng_region_info *region_info_array;
@@ -1565,7 +1598,7 @@ RRDR *rrd2rrdr(
 
         /* This call takes the chart read-lock */
         regions = rrdeng_variable_step_boundaries(st, after_requested, before_requested,
-                                                  &region_info_array, &max_interval);
+                                                  &region_info_array, &max_interval, context_param_list);
         if (1 == regions) {
             if (region_info_array) {
                 if (rrd_update_every != region_info_array[0].update_every) {
@@ -1573,28 +1606,28 @@ RRDR *rrd2rrdr(
                     /* recalculate query alignment */
                     absolute_period_requested =
                             rrdr_convert_before_after_to_absolute(&after_requested, &before_requested, rrd_update_every,
-                                                                  first_entry_t, last_entry_t);
+                                                                  first_entry_t, last_entry_t, options);
                 }
                 freez(region_info_array);
             }
             return rrd2rrdr_fixedstep(st, points_requested, after_requested, before_requested, group_method,
                                       resampling_time_requested, options, dimensions, rrd_update_every,
-                                      first_entry_t, last_entry_t, absolute_period_requested);
+                                      first_entry_t, last_entry_t, absolute_period_requested, context_param_list);
         } else {
             if (rrd_update_every != (uint16_t)max_interval) {
                 rrd_update_every = (uint16_t) max_interval;
                 /* recalculate query alignment */
                 absolute_period_requested = rrdr_convert_before_after_to_absolute(&after_requested, &before_requested,
                                                                                   rrd_update_every, first_entry_t,
-                                                                                  last_entry_t);
+                                                                                  last_entry_t, options);
             }
             return rrd2rrdr_variablestep(st, points_requested, after_requested, before_requested, group_method,
                                          resampling_time_requested, options, dimensions, rrd_update_every,
-                                         first_entry_t, last_entry_t, absolute_period_requested, region_info_array);
+                                         first_entry_t, last_entry_t, absolute_period_requested, region_info_array, context_param_list);
         }
     }
 #endif
     return rrd2rrdr_fixedstep(st, points_requested, after_requested, before_requested, group_method,
                               resampling_time_requested, options, dimensions,
-                              rrd_update_every, first_entry_t, last_entry_t, absolute_period_requested);
+                              rrd_update_every, first_entry_t, last_entry_t, absolute_period_requested, context_param_list);
 }
\ No newline at end of file
diff --git a/web/api/queries/rrdr.c b/web/api/queries/rrdr.c
index e727e607..6cd0c0b1 100644
--- a/web/api/queries/rrdr.c
+++ b/web/api/queries/rrdr.c
@@ -98,7 +98,7 @@ inline void rrdr_free(RRDR *r)
     freez(r);
 }
 
-RRDR *rrdr_create(RRDSET *st, long n)
+RRDR *rrdr_create(struct rrdset *st, long n, struct context_param *context_param_list)
 {
     if(unlikely(!st)) {
         error("NULL value given!");
@@ -110,8 +110,16 @@ RRDR *rrdr_create(RRDSET *st, long n)
 
     rrdr_lock_rrdset(r);
 
+    RRDDIM *temp_rd =  context_param_list ? context_param_list->rd : NULL;
     RRDDIM *rd;
-    rrddim_foreach_read(rd, st) r->d++;
+    if (temp_rd) {
+        RRDDIM *t = temp_rd;
+        while (t) {
+            r->d++;
+            t = t->next;
+        }
+    } else
+        rrddim_foreach_read(rd, st) r->d++;
 
     r->n = n;
 
@@ -122,7 +130,7 @@ RRDR *rrdr_create(RRDSET *st, long n)
 
     // set the hidden flag on hidden dimensions
     int c;
-    for(c = 0, rd = st->dimensions ; rd ; c++, rd = rd->next) {
+    for(c = 0, rd = temp_rd?temp_rd:st->dimensions ; rd ; c++, rd = rd->next) {
         if(unlikely(rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN)))
             r->od[c] = RRDR_DIMENSION_HIDDEN;
         else
diff --git a/web/api/queries/rrdr.h b/web/api/queries/rrdr.h
index 6a031adf..4d349c30 100644
--- a/web/api/queries/rrdr.h
+++ b/web/api/queries/rrdr.h
@@ -23,6 +23,7 @@ typedef enum rrdr_options {
     RRDR_OPTION_MATCH_IDS    = 0x00004000, // when filtering dimensions, match only IDs
     RRDR_OPTION_MATCH_NAMES  = 0x00008000, // when filtering dimensions, match only names
     RRDR_OPTION_CUSTOM_VARS  = 0x00010000, // when wraping response in a JSON, return custom variables in response
+    RRDR_OPTION_ALLOW_PAST   = 0x00020000, // The after parameter can extend in the past before the first entry
 } RRDR_OPTIONS;
 
 typedef enum rrdr_value_flag {
@@ -97,13 +98,17 @@ typedef struct rrdresult {
 
 #define rrdr_rows(r) ((r)->rows)
 
+#include "../../../database/rrd.h"
 extern void rrdr_free(RRDR *r);
-extern RRDR *rrdr_create(struct rrdset *st, long n);
+extern RRDR *rrdr_create(struct rrdset *st, long n, struct context_param *context_param_list);
 
 #include "../web_api_v1.h"
 #include "web/api/queries/query.h"
 
-extern RRDR *rrd2rrdr(RRDSET *st, long points_requested, long long after_requested, long long before_requested, RRDR_GROUPING group_method, long resampling_time_requested, RRDR_OPTIONS options, const char *dimensions);
+extern RRDR *rrd2rrdr(
+    RRDSET *st, long points_requested, long long after_requested, long long before_requested,
+    RRDR_GROUPING group_method, long resampling_time_requested, RRDR_OPTIONS options, const char *dimensions,
+    struct context_param *context_param_list);
 
 #include "query.h"
 
diff --git a/web/api/queries/ses/Makefile.in b/web/api/queries/ses/Makefile.in
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+++ /dev/null
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diff --git a/web/api/queries/ses/README.md b/web/api/queries/ses/README.md
index 5f21c849..c2797013 100644
--- a/web/api/queries/ses/README.md
+++ b/web/api/queries/ses/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "Single (or Simple) Exponential Smoothing (`ses`)"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/queries/ses/README.md
+-->
+
 # Single (or Simple) Exponential Smoothing (`ses`)
 
 > This query is also available as `ema` and `ewma`.
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index 00604154..7cd7d62a 100644
--- a/web/api/queries/stddev/README.md
+++ b/web/api/queries/stddev/README.md
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+<!--
+title: "standard deviation (`stddev`)"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/queries/stddev/README.md
+-->
+
 # standard deviation (`stddev`)
 
 The standard deviation is a measure that is used to quantify the amount of variation or dispersion
diff --git a/web/api/queries/stddev/stddev.c b/web/api/queries/stddev/stddev.c
index ad0efc83..16258445 100644
--- a/web/api/queries/stddev/stddev.c
+++ b/web/api/queries/stddev/stddev.c
@@ -15,10 +15,8 @@ struct grouping_stddev {
 };
 
 void *grouping_create_stddev(RRDR *r) {
-    long entries = r->group;
-    if(entries < 0) entries = 0;
-
-    return callocz(1, sizeof(struct grouping_stddev) + entries * sizeof(LONG_DOUBLE));
+    UNUSED (r);
+    return callocz(1, sizeof(struct grouping_stddev));
 }
 
 // resets when switches dimensions
diff --git a/web/api/queries/sum/Makefile.in b/web/api/queries/sum/Makefile.in
deleted file mode 100644
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diff --git a/web/api/queries/sum/README.md b/web/api/queries/sum/README.md
index a7028ca6..aeace0a1 100644
--- a/web/api/queries/sum/README.md
+++ b/web/api/queries/sum/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "Sum"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/queries/sum/README.md
+-->
+
 # Sum
 
 This module sums all the values in the time-frame requested.
diff --git a/web/api/tests/valid_urls.c b/web/api/tests/valid_urls.c
index c6032a5e..d8c261c5 100644
--- a/web/api/tests/valid_urls.c
+++ b/web/api/tests/valid_urls.c
@@ -8,6 +8,18 @@
 #include <cmocka.h>
 #include <stdbool.h>
 
+RRDHOST *sql_create_host_by_uuid(char *hostname)
+{
+    (void) hostname;
+    return NULL;
+}
+
+RRDHOST *__wrap_sql_create_host_by_uuid(char *hostname)
+{
+    (void) hostname;
+    return NULL;
+}
+
 void repr(char *result, int result_size, char const *buf, int size)
 {
     int n;
@@ -182,7 +194,8 @@ WEB_SERVER_MODE web_server_mode = WEB_SERVER_MODE_STATIC_THREADED;
 char *netdata_configured_web_dir = "UNKNOWN FIXME";
 RRDHOST *localhost = NULL;
 
-struct config netdata_config = { .sections = NULL,
+struct config netdata_config = { .first_section = NULL,
+                                 .last_section = NULL,
                                  .mutex = NETDATA_MUTEX_INITIALIZER,
                                  .index = { .avl_tree = { .root = NULL, .compar = appconfig_section_compare },
                                             .rwlock = AVL_LOCK_INITIALIZER } };
diff --git a/web/api/tests/web_api.c b/web/api/tests/web_api.c
index ef9fea0c..3cc0a790 100644
--- a/web/api/tests/web_api.c
+++ b/web/api/tests/web_api.c
@@ -8,6 +8,18 @@
 #include <cmocka.h>
 #include <stdbool.h>
 
+RRDHOST *sql_create_host_by_uuid(char *hostname)
+{
+    (void) hostname;
+    return NULL;
+}
+
+RRDHOST *__wrap_sql_create_host_by_uuid(char *hostname)
+{
+    (void) hostname;
+    return NULL;
+}
+
 void repr(char *result, int result_size, char const *buf, int size)
 {
     int n;
@@ -184,7 +196,8 @@ WEB_SERVER_MODE web_server_mode = WEB_SERVER_MODE_STATIC_THREADED;
 char *netdata_configured_web_dir = "UNKNOWN FIXME";
 RRDHOST *localhost = NULL;
 
-struct config netdata_config = { .sections = NULL,
+struct config netdata_config = { .first_section = NULL,
+                                 .last_section = NULL,
                                  .mutex = NETDATA_MUTEX_INITIALIZER,
                                  .index = { .avl_tree = { .root = NULL, .compar = appconfig_section_compare },
                                             .rwlock = AVL_LOCK_INITIALIZER } };
diff --git a/web/api/web_api_v1.c b/web/api/web_api_v1.c
index 3efac566..73ac15d3 100644
--- a/web/api/web_api_v1.c
+++ b/web/api/web_api_v1.c
@@ -2,6 +2,8 @@
 
 #include "web_api_v1.h"
 
+char *api_secret;
+
 static struct {
     const char *name;
     uint32_t hash;
@@ -33,6 +35,7 @@ static struct {
         , {"match_names"     , 0    , RRDR_OPTION_MATCH_NAMES}
         , {"match-names"     , 0    , RRDR_OPTION_MATCH_NAMES}
         , {"showcustomvars"  , 0    , RRDR_OPTION_CUSTOM_VARS}
+        , {"allow_past"      , 0    , RRDR_OPTION_ALLOW_PAST}
         , {                  NULL, 0, 0}
 };
 
@@ -194,10 +197,8 @@ inline uint32_t web_client_api_request_v1_data_google_format(char *name) {
     return DATASOURCE_JSON;
 }
 
-
-inline int web_client_api_request_v1_alarms(RRDHOST *host, struct web_client *w, char *url) {
+int web_client_api_request_v1_alarms_select (char *url) {
     int all = 0;
-
     while(url) {
         char *value = mystrsep(&url, "&");
         if (!value || !*value) continue;
@@ -206,6 +207,12 @@ inline int web_client_api_request_v1_alarms(RRDHOST *host, struct web_client *w,
         else if(!strcmp(value, "active")) all = 0;
     }
 
+    return all;
+}
+
+inline int web_client_api_request_v1_alarms(RRDHOST *host, struct web_client *w, char *url) {
+    int all = web_client_api_request_v1_alarms_select(url);
+
     buffer_flush(w->response.data);
     w->response.data->contenttype = CT_APPLICATION_JSON;
     health_alarms2json(host, w->response.data, all);
@@ -213,6 +220,16 @@ inline int web_client_api_request_v1_alarms(RRDHOST *host, struct web_client *w,
     return HTTP_RESP_OK;
 }
 
+inline int web_client_api_request_v1_alarms_values(RRDHOST *host, struct web_client *w, char *url) {
+    int all = web_client_api_request_v1_alarms_select(url);
+
+    buffer_flush(w->response.data);
+    w->response.data->contenttype = CT_APPLICATION_JSON;
+    health_alarms_values2json(host, w->response.data, all);
+    buffer_no_cacheable(w->response.data);
+    return HTTP_RESP_OK;
+}
+
 inline int web_client_api_request_v1_alarm_count(RRDHOST *host, struct web_client *w, char *url) {
     RRDCALC_STATUS status = RRDCALC_STATUS_RAISED;
     BUFFER *contexts = NULL;
@@ -333,7 +350,19 @@ inline int web_client_api_request_v1_charts(RRDHOST *host, struct web_client *w,
 
     buffer_flush(w->response.data);
     w->response.data->contenttype = CT_APPLICATION_JSON;
-    charts2json(host, w->response.data);
+    charts2json(host, w->response.data, 0, 0);
+    return HTTP_RESP_OK;
+}
+
+inline int web_client_api_request_v1_archivedcharts(RRDHOST *host __maybe_unused, struct web_client *w, char *url) {
+    (void)url;
+
+    buffer_flush(w->response.data);
+    w->response.data->contenttype = CT_APPLICATION_JSON;
+#ifdef ENABLE_DBENGINE
+    if (host->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE)
+        sql_rrdset2json(host, w->response.data);
+#endif
     return HTTP_RESP_OK;
 }
 
@@ -372,7 +401,9 @@ inline int web_client_api_request_v1_data(RRDHOST *host, struct web_client *w, c
     , *before_str = NULL
     , *after_str = NULL
     , *group_time_str = NULL
-    , *points_str = NULL;
+    , *points_str = NULL
+    , *context = NULL
+    , *chart_label_key = NULL;
 
     int group = RRDR_GROUPING_AVERAGE;
     uint32_t format = DATASOURCE_JSON;
@@ -391,7 +422,9 @@ inline int web_client_api_request_v1_data(RRDHOST *host, struct web_client *w, c
         // name and value are now the parameters
         // they are not null and not empty
 
-        if(!strcmp(name, "chart")) chart = value;
+        if(!strcmp(name, "context")) context = value;
+        else if(!strcmp(name, "chart_label_key")) chart_label_key = value;
+        else if(!strcmp(name, "chart")) chart = value;
         else if(!strcmp(name, "dimension") || !strcmp(name, "dim") || !strcmp(name, "dimensions") || !strcmp(name, "dims")) {
             if(!dimensions) dimensions = buffer_create(100);
             buffer_strcat(dimensions, "|");
@@ -457,23 +490,59 @@ inline int web_client_api_request_v1_data(RRDHOST *host, struct web_client *w, c
     fix_google_param(responseHandler);
     fix_google_param(outFileName);
 
-    if(!chart || !*chart) {
+    RRDSET *st = NULL;
+
+    if((!chart || !*chart) && (!context)) {
         buffer_sprintf(w->response.data, "No chart id is given at the request.");
         goto cleanup;
     }
 
-    RRDSET *st = rrdset_find(host, chart);
-    if(!st) st = rrdset_find_byname(host, chart);
-    if(!st) {
-        buffer_strcat(w->response.data, "Chart is not found: ");
-        buffer_strcat_htmlescape(w->response.data, chart);
+    struct context_param  *context_param_list = NULL;
+    if (context && !chart) {
+        RRDSET *st1;
+        uint32_t context_hash = simple_hash(context);
+
+        rrdhost_rdlock(host);
+        rrdset_foreach_read(st1, host) {
+            if (st1->hash_context == context_hash && !strcmp(st1->context, context) &&
+                (!chart_label_key || rrdset_contains_label_keylist(st1, chart_label_key)))
+                build_context_param_list(&context_param_list, st1);
+        }
+        rrdhost_unlock(host);
+        if (likely(context_param_list && context_param_list->rd))  // Just set the first one
+            st = context_param_list->rd->rrdset;
+    }
+    else {
+        st = rrdset_find(host, chart);
+        if (!st)
+            st = rrdset_find_byname(host, chart);
+        if (likely(st))
+            st->last_accessed_time = now_realtime_sec();
+    }
+
+    if (!st && !context_param_list) {
+        if (context && !chart) {
+            if (!chart_label_key) {
+                buffer_strcat(w->response.data, "Context is not found: ");
+                buffer_strcat_htmlescape(w->response.data, context);
+            } else {
+                buffer_strcat(w->response.data, "Context: ");
+                buffer_strcat_htmlescape(w->response.data, context);
+                buffer_strcat(w->response.data, " or chart label key: ");
+                buffer_strcat_htmlescape(w->response.data, chart_label_key);
+                buffer_strcat(w->response.data, " not found");
+            }
+        }
+        else {
+            buffer_strcat(w->response.data, "Chart is not found: ");
+            buffer_strcat_htmlescape(w->response.data, chart);
+        }
         ret = HTTP_RESP_NOT_FOUND;
         goto cleanup;
     }
-    st->last_accessed_time = now_realtime_sec();
 
     long long before = (before_str && *before_str)?str2l(before_str):0;
-    long long after  = (after_str  && *after_str) ?str2l(after_str):0;
+    long long after  = (after_str  && *after_str) ?str2l(after_str):-600;
     int       points = (points_str && *points_str)?str2i(points_str):0;
     long      group_time = (group_time_str && *group_time_str)?str2l(group_time_str):0;
 
@@ -515,7 +584,9 @@ inline int web_client_api_request_v1_data(RRDHOST *host, struct web_client *w, c
     }
 
     ret = rrdset2anything_api_v1(st, w->response.data, dimensions, format, points, after, before, group, group_time
-                                 , options, &last_timestamp_in_data);
+                                 , options, &last_timestamp_in_data, context_param_list, chart_label_key);
+
+    free_context_param_list(&context_param_list);
 
     if(format == DATASOURCE_DATATABLE_JSONP) {
         if(google_timestamp < last_timestamp_in_data)
@@ -596,6 +667,9 @@ inline int web_client_api_request_v1_registry(RRDHOST *host, struct web_client *
     int redirects = 0;
 */
 
+	// Don't cache registry responses
+    buffer_no_cacheable(w->response.data);
+
     while(url) {
         char *value = mystrsep(&url, "&");
         if (!value || !*value) continue;
@@ -749,44 +823,119 @@ static inline void web_client_api_request_v1_info_summary_alarm_statuses(RRDHOST
 }
 
 static inline void web_client_api_request_v1_info_mirrored_hosts(BUFFER *wb) {
-    RRDHOST *rc;
+    RRDHOST *host;
     int count = 0;
+
+    buffer_strcat(wb, "\t\"mirrored_hosts\": [\n");
     rrd_rdlock();
-    rrdhost_foreach_read(rc) {
-        if(count > 0) buffer_strcat(wb, ",\n");
-        buffer_sprintf(wb, "\t\t\"%s\"", rc->hostname);
+    rrdhost_foreach_read(host) {
+        if (rrdhost_flag_check(host, RRDHOST_FLAG_ARCHIVED))
+            continue;
+        if (count > 0)
+            buffer_strcat(wb, ",\n");
+
+        buffer_sprintf(wb, "\t\t\"%s\"", host->hostname);
+        count++;
+    }
+
+    buffer_strcat(wb, "\n\t],\n\t\"mirrored_hosts_status\": [\n");
+    count = 0;
+    rrdhost_foreach_read(host)
+    {
+        if (rrdhost_flag_check(host, RRDHOST_FLAG_ARCHIVED))
+            continue;
+        if (count > 0)
+            buffer_strcat(wb, ",\n");
+
+        netdata_mutex_lock(&host->receiver_lock);
+        buffer_sprintf(
+            wb, "\t\t{ \"guid\": \"%s\", \"reachable\": %s, \"claim_id\": ", host->machine_guid,
+            (host->receiver || host == localhost) ? "true" : "false");
+        netdata_mutex_unlock(&host->receiver_lock);
+
+        rrdhost_aclk_state_lock(host);
+        if (host->aclk_state.claimed_id)
+            buffer_sprintf(wb, "\"%s\" }", host->aclk_state.claimed_id);
+        else
+            buffer_strcat(wb, "null }");
+        rrdhost_aclk_state_unlock(host);
+
         count++;
     }
-    buffer_strcat(wb, "\n");
     rrd_unlock();
+
+    buffer_strcat(wb, "\n\t],\n");
 }
 
-inline int web_client_api_request_v1_info(RRDHOST *host, struct web_client *w, char *url) {
-    (void)url;
-    if (!netdata_ready) return HTTP_RESP_BACKEND_FETCH_FAILED;
+inline void host_labels2json(RRDHOST *host, BUFFER *wb, size_t indentation) {
+    char tabs[11];
 
-    BUFFER *wb = w->response.data;
-    buffer_flush(wb);
-    wb->contenttype = CT_APPLICATION_JSON;
+    if (indentation > 10)
+        indentation = 10;
+
+    tabs[0] = '\0';
+    while (indentation) {
+        strcat(tabs, "\t");
+        indentation--;
+    }
+
+    int count = 0;
+    rrdhost_rdlock(host);
+    netdata_rwlock_rdlock(&host->labels.labels_rwlock);
+    for (struct label *label = host->labels.head; label; label = label->next) {
+        if(count > 0) buffer_strcat(wb, ",\n");
+        buffer_strcat(wb, tabs);
+
+        char value[CONFIG_MAX_VALUE * 2 + 1];
+        sanitize_json_string(value, label->value, CONFIG_MAX_VALUE * 2);
+        buffer_sprintf(wb, "\"%s\": \"%s\"", label->key, value);
 
+        count++;
+    }
+    buffer_strcat(wb, "\n");
+    netdata_rwlock_unlock(&host->labels.labels_rwlock);
+    rrdhost_unlock(host);
+}
+
+extern int aclk_connected;
+inline int web_client_api_request_v1_info_fill_buffer(RRDHOST *host, BUFFER *wb)
+{
     buffer_strcat(wb, "{\n");
     buffer_sprintf(wb, "\t\"version\": \"%s\",\n", host->program_version);
     buffer_sprintf(wb, "\t\"uid\": \"%s\",\n", host->machine_guid);
 
-    buffer_strcat(wb, "\t\"mirrored_hosts\": [\n");
     web_client_api_request_v1_info_mirrored_hosts(wb);
-    buffer_strcat(wb, "\t],\n");
 
     buffer_strcat(wb, "\t\"alarms\": {\n");
     web_client_api_request_v1_info_summary_alarm_statuses(host, wb);
     buffer_strcat(wb, "\t},\n");
 
-    buffer_sprintf(wb, "\t\"os_name\": %s,\n", (host->system_info->os_name) ? host->system_info->os_name : "\"\"");
-    buffer_sprintf(wb, "\t\"os_id\": \"%s\",\n", (host->system_info->os_id) ? host->system_info->os_id : "");
-    buffer_sprintf(wb, "\t\"os_id_like\": \"%s\",\n", (host->system_info->os_id_like) ? host->system_info->os_id_like : "");
-    buffer_sprintf(wb, "\t\"os_version\": \"%s\",\n", (host->system_info->os_version) ? host->system_info->os_version : "");
-    buffer_sprintf(wb, "\t\"os_version_id\": \"%s\",\n", (host->system_info->os_version_id) ? host->system_info->os_version_id : "");
-    buffer_sprintf(wb, "\t\"os_detection\": \"%s\",\n", (host->system_info->os_detection) ? host->system_info->os_detection : "");
+    buffer_sprintf(wb, "\t\"os_name\": \"%s\",\n", (host->system_info->host_os_name) ? host->system_info->host_os_name : "");
+    buffer_sprintf(wb, "\t\"os_id\": \"%s\",\n", (host->system_info->host_os_id) ? host->system_info->host_os_id : "");
+    buffer_sprintf(wb, "\t\"os_id_like\": \"%s\",\n", (host->system_info->host_os_id_like) ? host->system_info->host_os_id_like : "");
+    buffer_sprintf(wb, "\t\"os_version\": \"%s\",\n", (host->system_info->host_os_version) ? host->system_info->host_os_version : "");
+    buffer_sprintf(wb, "\t\"os_version_id\": \"%s\",\n", (host->system_info->host_os_version_id) ? host->system_info->host_os_version_id : "");
+    buffer_sprintf(wb, "\t\"os_detection\": \"%s\",\n", (host->system_info->host_os_detection) ? host->system_info->host_os_detection : "");
+    buffer_sprintf(wb, "\t\"cores_total\": \"%s\",\n", (host->system_info->host_cores) ? host->system_info->host_cores : "");
+    buffer_sprintf(wb, "\t\"total_disk_space\": \"%s\",\n", (host->system_info->host_disk_space) ? host->system_info->host_disk_space : "");
+    buffer_sprintf(wb, "\t\"cpu_freq\": \"%s\",\n", (host->system_info->host_cpu_freq) ? host->system_info->host_cpu_freq : "");
+    buffer_sprintf(wb, "\t\"ram_total\": \"%s\",\n", (host->system_info->host_ram_total) ? host->system_info->host_ram_total : "");
+
+    if (host->system_info->container_os_name)
+        buffer_sprintf(wb, "\t\"container_os_name\": \"%s\",\n", host->system_info->container_os_name);
+    if (host->system_info->container_os_id)
+        buffer_sprintf(wb, "\t\"container_os_id\": \"%s\",\n", host->system_info->container_os_id);
+    if (host->system_info->container_os_id_like)
+        buffer_sprintf(wb, "\t\"container_os_id_like\": \"%s\",\n", host->system_info->container_os_id_like);
+    if (host->system_info->container_os_version)
+        buffer_sprintf(wb, "\t\"container_os_version\": \"%s\",\n", host->system_info->container_os_version);
+    if (host->system_info->container_os_version_id)
+        buffer_sprintf(wb, "\t\"container_os_version_id\": \"%s\",\n", host->system_info->container_os_version_id);
+    if (host->system_info->container_os_detection)
+        buffer_sprintf(wb, "\t\"container_os_detection\": \"%s\",\n", host->system_info->container_os_detection);
+    if (host->system_info->is_k8s_node)
+        buffer_sprintf(wb, "\t\"is_k8s_node\": \"%s\",\n", host->system_info->is_k8s_node);
+
     buffer_sprintf(wb, "\t\"kernel_name\": \"%s\",\n", (host->system_info->kernel_name) ? host->system_info->kernel_name : "");
     buffer_sprintf(wb, "\t\"kernel_version\": \"%s\",\n", (host->system_info->kernel_version) ? host->system_info->kernel_version : "");
     buffer_sprintf(wb, "\t\"architecture\": \"%s\",\n", (host->system_info->architecture) ? host->system_info->architecture : "");
@@ -795,11 +944,53 @@ inline int web_client_api_request_v1_info(RRDHOST *host, struct web_client *w, c
     buffer_sprintf(wb, "\t\"container\": \"%s\",\n", (host->system_info->container) ? host->system_info->container : "");
     buffer_sprintf(wb, "\t\"container_detection\": \"%s\",\n", (host->system_info->container_detection) ? host->system_info->container_detection : "");
 
+    buffer_strcat(wb, "\t\"host_labels\": {\n");
+    host_labels2json(host, wb, 2);
+    buffer_strcat(wb, "\t},\n");
+
     buffer_strcat(wb, "\t\"collectors\": [");
     chartcollectors2json(host, wb);
-    buffer_strcat(wb, "\n\t]\n");
+    buffer_strcat(wb, "\n\t],\n");
+
+#ifdef DISABLE_CLOUD
+    buffer_strcat(wb, "\t\"cloud-enabled\": false,\n");
+#else
+    buffer_sprintf(wb, "\t\"cloud-enabled\": %s,\n",
+                   appconfig_get_boolean(&cloud_config, CONFIG_SECTION_GLOBAL, "enabled", 1) ? "true" : "false");
+#endif
+
+#ifdef ENABLE_ACLK
+    buffer_strcat(wb, "\t\"cloud-available\": true,\n");
+#else
+    buffer_strcat(wb, "\t\"cloud-available\": false,\n");
+#endif
+    char *agent_id = is_agent_claimed();
+    if (agent_id == NULL)
+        buffer_strcat(wb, "\t\"agent-claimed\": false,\n");
+    else {
+        buffer_strcat(wb, "\t\"agent-claimed\": true,\n");
+        freez(agent_id);
+    }
+#ifdef ENABLE_ACLK
+    if (aclk_connected)
+        buffer_strcat(wb, "\t\"aclk-available\": true\n");
+    else
+#endif
+        buffer_strcat(wb, "\t\"aclk-available\": false\n");     // Intentionally valid with/without #ifdef above
 
     buffer_strcat(wb, "}");
+    return 0;
+}
+
+inline int web_client_api_request_v1_info(RRDHOST *host, struct web_client *w, char *url) {
+    (void)url;
+    if (!netdata_ready) return HTTP_RESP_BACKEND_FETCH_FAILED;
+    BUFFER *wb = w->response.data;
+    buffer_flush(wb);
+    wb->contenttype = CT_APPLICATION_JSON;
+
+    web_client_api_request_v1_info_fill_buffer(host, wb);
+
     buffer_no_cacheable(wb);
     return HTTP_RESP_OK;
 }
@@ -814,6 +1005,7 @@ static struct api_command {
         { "data",            0, WEB_CLIENT_ACL_DASHBOARD, web_client_api_request_v1_data            },
         { "chart",           0, WEB_CLIENT_ACL_DASHBOARD, web_client_api_request_v1_chart           },
         { "charts",          0, WEB_CLIENT_ACL_DASHBOARD, web_client_api_request_v1_charts          },
+        { "archivedcharts",  0, WEB_CLIENT_ACL_DASHBOARD, web_client_api_request_v1_archivedcharts  },
 
         // registry checks the ACL by itself, so we allow everything
         { "registry",        0, WEB_CLIENT_ACL_NOCHECK,   web_client_api_request_v1_registry        },
@@ -822,6 +1014,7 @@ static struct api_command {
         { "badge.svg",       0, WEB_CLIENT_ACL_DASHBOARD|WEB_CLIENT_ACL_BADGE, web_client_api_request_v1_badge },
 
         { "alarms",          0, WEB_CLIENT_ACL_DASHBOARD, web_client_api_request_v1_alarms          },
+        { "alarms_values",   0, WEB_CLIENT_ACL_DASHBOARD, web_client_api_request_v1_alarms_values   },
         { "alarm_log",       0, WEB_CLIENT_ACL_DASHBOARD, web_client_api_request_v1_alarm_log       },
         { "alarm_variables", 0, WEB_CLIENT_ACL_DASHBOARD, web_client_api_request_v1_alarm_variables },
         { "alarm_count",     0, WEB_CLIENT_ACL_DASHBOARD, web_client_api_request_v1_alarm_count     },
diff --git a/web/api/web_api_v1.h b/web/api/web_api_v1.h
index 3edb47e3..445b0e4a 100644
--- a/web/api/web_api_v1.h
+++ b/web/api/web_api_v1.h
@@ -13,20 +13,24 @@ extern uint32_t web_client_api_request_v1_data_format(char *name);
 extern uint32_t web_client_api_request_v1_data_google_format(char *name);
 
 extern int web_client_api_request_v1_alarms(RRDHOST *host, struct web_client *w, char *url);
+extern int web_client_api_request_v1_alarms_values(RRDHOST *host, struct web_client *w, char *url);
 extern int web_client_api_request_v1_alarm_log(RRDHOST *host, struct web_client *w, char *url);
 extern int web_client_api_request_single_chart(RRDHOST *host, struct web_client *w, char *url, void callback(RRDSET *st, BUFFER *buf));
 extern int web_client_api_request_v1_alarm_variables(RRDHOST *host, struct web_client *w, char *url);
 extern int web_client_api_request_v1_alarm_count(RRDHOST *host, struct web_client *w, char *url);
 extern int web_client_api_request_v1_charts(RRDHOST *host, struct web_client *w, char *url);
+extern int web_client_api_request_v1_archivedcharts(RRDHOST *host, struct web_client *w, char *url);
 extern int web_client_api_request_v1_chart(RRDHOST *host, struct web_client *w, char *url);
 extern int web_client_api_request_v1_data(RRDHOST *host, struct web_client *w, char *url);
 extern int web_client_api_request_v1_registry(RRDHOST *host, struct web_client *w, char *url);
 extern int web_client_api_request_v1_info(RRDHOST *host, struct web_client *w, char *url);
 extern int web_client_api_request_v1(RRDHOST *host, struct web_client *w, char *url);
+extern int web_client_api_request_v1_info_fill_buffer(RRDHOST *host, BUFFER *wb);
+extern void host_labels2json(RRDHOST *host, BUFFER *wb, size_t indentation);
 
 extern void web_client_api_v1_init(void);
 extern void web_client_api_v1_management_init(void);
 
-char *api_secret;
+extern char *api_secret;
 
 #endif //NETDATA_WEB_API_V1_H