Updated version 1.8.0+dfsg from 'upstream/1.8.0+dfsg'

with Debian dir 412de09d9bca38fe00146ef090f9e53f76493882

23 files changed, 724 insertions, 71 deletions

diff --git a/conf.d/Makefile.am b/conf.d/Makefile.am
index 4cbecb56..7a078667 100644
--- a/conf.d/Makefile.am
+++ b/conf.d/Makefile.am
@@ -21,6 +21,7 @@ dist_nodeconfig_DATA = \
     node.d/named.conf.md \
     node.d/sma_webbox.conf.md \
     node.d/snmp.conf.md \
+    node.d/stiebeleltron.conf.md \
     $(NULL)
 
 pythonconfigdir=$(configdir)/python.d
@@ -28,6 +29,7 @@ dist_pythonconfig_DATA = \
     python.d/apache.conf \
     python.d/apache_cache.conf \
     python.d/bind_rndc.conf \
+    python.d/chrony.conf \
     python.d/cpufreq.conf \
     python.d/dns_query_time.conf \
     python.d/dovecot.conf \
@@ -69,45 +71,40 @@ dist_healthconfig_DATA = \
     health.d/apache.conf \
     health.d/backend.conf \
     health.d/bind_rndc.conf \
+    health.d/cpu.conf \
+    health.d/disks.conf \
     health.d/elasticsearch.conf \
+    health.d/entropy.conf \
     health.d/fping.conf \
     health.d/haproxy.conf \
+    health.d/ipc.conf \
     health.d/ipfs.conf \
     health.d/ipmi.conf \
     health.d/isc_dhcpd.conf \
     health.d/lighttpd.conf \
     health.d/mdstat.conf \
     health.d/memcached.conf \
+    health.d/memory.conf \
+    health.d/mongodb.conf \
     health.d/mysql.conf \
     health.d/named.conf \
-    health.d/mongodb.conf \
-    health.d/nginx.conf \
-    health.d/postgres.conf \
-    health.d/redis.conf \
-    health.d/retroshare.conf \
-    health.d/squid.conf \
-    health.d/varnish.conf \
-    health.d/web_log.conf \
-    health.d/zfs.conf \
-    $(NULL)
-
-if LINUX
-dist_healthconfig_DATA += \
-    health.d/cpu.conf \
-    health.d/disks.conf \
-    health.d/entropy.conf \
-    health.d/ipc.conf \
-    health.d/memory.conf \
     health.d/net.conf \
     health.d/netfilter.conf \
+    health.d/nginx.conf \
+    health.d/postgres.conf \
     health.d/qos.conf \
     health.d/ram.conf \
+    health.d/redis.conf \
+    health.d/retroshare.conf \
     health.d/softnet.conf \
+    health.d/squid.conf \
     health.d/swap.conf \
     health.d/tcp_resets.conf \
     health.d/udp_errors.conf \
+    health.d/varnish.conf \
+    health.d/web_log.conf \
+    health.d/zfs.conf \
     $(NULL)
-endif LINUX
 
 chartsconfigdir=$(configdir)/charts.d
 dist_chartsconfig_DATA = \
diff --git a/conf.d/Makefile.in b/conf.d/Makefile.in
index 7a1e300e..3d7084ed 100644
--- a/conf.d/Makefile.in
+++ b/conf.d/Makefile.in
@@ -78,26 +78,10 @@ PRE_UNINSTALL = :
 POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
-@LINUX_TRUE@am__append_1 = \
-@LINUX_TRUE@    health.d/cpu.conf \
-@LINUX_TRUE@    health.d/disks.conf \
-@LINUX_TRUE@    health.d/entropy.conf \
-@LINUX_TRUE@    health.d/ipc.conf \
-@LINUX_TRUE@    health.d/memory.conf \
-@LINUX_TRUE@    health.d/net.conf \
-@LINUX_TRUE@    health.d/netfilter.conf \
-@LINUX_TRUE@    health.d/qos.conf \
-@LINUX_TRUE@    health.d/ram.conf \
-@LINUX_TRUE@    health.d/softnet.conf \
-@LINUX_TRUE@    health.d/swap.conf \
-@LINUX_TRUE@    health.d/tcp_resets.conf \
-@LINUX_TRUE@    health.d/udp_errors.conf \
-@LINUX_TRUE@    $(NULL)
-
 subdir = conf.d
 DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
 	$(dist_chartsconfig_DATA) $(dist_config_DATA) \
-	$(am__dist_healthconfig_DATA_DIST) $(dist_nodeconfig_DATA) \
+	$(dist_healthconfig_DATA) $(dist_nodeconfig_DATA) \
 	$(dist_pythonconfig_DATA) $(dist_statsdconfig_DATA)
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/ax_c___atomic.m4 \
@@ -164,21 +148,6 @@ am__installdirs = "$(DESTDIR)$(chartsconfigdir)" \
 	"$(DESTDIR)$(configdir)" "$(DESTDIR)$(healthconfigdir)" \
 	"$(DESTDIR)$(nodeconfigdir)" "$(DESTDIR)$(pythonconfigdir)" \
 	"$(DESTDIR)$(statsdconfigdir)"
-am__dist_healthconfig_DATA_DIST = health.d/apache.conf \
-	health.d/backend.conf health.d/bind_rndc.conf \
-	health.d/elasticsearch.conf health.d/fping.conf \
-	health.d/haproxy.conf health.d/ipfs.conf health.d/ipmi.conf \
-	health.d/isc_dhcpd.conf health.d/lighttpd.conf \
-	health.d/mdstat.conf health.d/memcached.conf \
-	health.d/mysql.conf health.d/named.conf health.d/mongodb.conf \
-	health.d/nginx.conf health.d/postgres.conf health.d/redis.conf \
-	health.d/retroshare.conf health.d/squid.conf \
-	health.d/varnish.conf health.d/web_log.conf health.d/zfs.conf \
-	health.d/cpu.conf health.d/disks.conf health.d/entropy.conf \
-	health.d/ipc.conf health.d/memory.conf health.d/net.conf \
-	health.d/netfilter.conf health.d/qos.conf health.d/ram.conf \
-	health.d/softnet.conf health.d/swap.conf \
-	health.d/tcp_resets.conf health.d/udp_errors.conf
 DATA = $(dist_chartsconfig_DATA) $(dist_config_DATA) \
 	$(dist_healthconfig_DATA) $(dist_nodeconfig_DATA) \
 	$(dist_pythonconfig_DATA) $(dist_statsdconfig_DATA)
@@ -351,6 +320,7 @@ dist_nodeconfig_DATA = \
     node.d/named.conf.md \
     node.d/sma_webbox.conf.md \
     node.d/snmp.conf.md \
+    node.d/stiebeleltron.conf.md \
     $(NULL)
 
 pythonconfigdir = $(configdir)/python.d
@@ -358,6 +328,7 @@ dist_pythonconfig_DATA = \
     python.d/apache.conf \
     python.d/apache_cache.conf \
     python.d/bind_rndc.conf \
+    python.d/chrony.conf \
     python.d/cpufreq.conf \
     python.d/dns_query_time.conf \
     python.d/dovecot.conf \
@@ -394,17 +365,45 @@ dist_pythonconfig_DATA = \
     $(NULL)
 
 healthconfigdir = $(configdir)/health.d
-dist_healthconfig_DATA = health.d/apache.conf health.d/backend.conf \
-	health.d/bind_rndc.conf health.d/elasticsearch.conf \
-	health.d/fping.conf health.d/haproxy.conf health.d/ipfs.conf \
-	health.d/ipmi.conf health.d/isc_dhcpd.conf \
-	health.d/lighttpd.conf health.d/mdstat.conf \
-	health.d/memcached.conf health.d/mysql.conf \
-	health.d/named.conf health.d/mongodb.conf health.d/nginx.conf \
-	health.d/postgres.conf health.d/redis.conf \
-	health.d/retroshare.conf health.d/squid.conf \
-	health.d/varnish.conf health.d/web_log.conf health.d/zfs.conf \
-	$(NULL) $(am__append_1)
+dist_healthconfig_DATA = \
+    health.d/apache.conf \
+    health.d/backend.conf \
+    health.d/bind_rndc.conf \
+    health.d/cpu.conf \
+    health.d/disks.conf \
+    health.d/elasticsearch.conf \
+    health.d/entropy.conf \
+    health.d/fping.conf \
+    health.d/haproxy.conf \
+    health.d/ipc.conf \
+    health.d/ipfs.conf \
+    health.d/ipmi.conf \
+    health.d/isc_dhcpd.conf \
+    health.d/lighttpd.conf \
+    health.d/mdstat.conf \
+    health.d/memcached.conf \
+    health.d/memory.conf \
+    health.d/mongodb.conf \
+    health.d/mysql.conf \
+    health.d/named.conf \
+    health.d/net.conf \
+    health.d/netfilter.conf \
+    health.d/nginx.conf \
+    health.d/postgres.conf \
+    health.d/qos.conf \
+    health.d/ram.conf \
+    health.d/redis.conf \
+    health.d/retroshare.conf \
+    health.d/softnet.conf \
+    health.d/squid.conf \
+    health.d/swap.conf \
+    health.d/tcp_resets.conf \
+    health.d/udp_errors.conf \
+    health.d/varnish.conf \
+    health.d/web_log.conf \
+    health.d/zfs.conf \
+    $(NULL)
+
 chartsconfigdir = $(configdir)/charts.d
 dist_chartsconfig_DATA = \
     charts.d/apache.conf \
diff --git a/conf.d/health.d/cpu.conf b/conf.d/health.d/cpu.conf
index 30a71409..db628556 100644
--- a/conf.d/health.d/cpu.conf
+++ b/conf.d/health.d/cpu.conf
@@ -1,6 +1,10 @@
 
+# you can disable an alarm notification by setting the 'to' line to: silent
+
 template: 10min_cpu_usage
       on: system.cpu
+      os: linux
+   hosts: *
   lookup: average -10m unaligned of user,system,softirq,irq,guest
    units: %
    every: 1m
@@ -12,6 +16,8 @@ template: 10min_cpu_usage
 
 template: 10min_cpu_iowait
       on: system.cpu
+      os: linux
+   hosts: *
   lookup: average -10m unaligned of iowait
    units: %
    every: 1m
@@ -23,6 +29,8 @@ template: 10min_cpu_iowait
 
 template: 20min_steal_cpu
       on: system.cpu
+      os: linux
+   hosts: *
   lookup: average -20m unaligned of steal
    units: %
    every: 5m
diff --git a/conf.d/health.d/disks.conf b/conf.d/health.d/disks.conf
index 9548f9ee..63053491 100644
--- a/conf.d/health.d/disks.conf
+++ b/conf.d/health.d/disks.conf
@@ -1,3 +1,7 @@
+
+# you can disable an alarm notification by setting the 'to' line to: silent
+
+
 # -----------------------------------------------------------------------------
 # low disk space
 
@@ -7,6 +11,8 @@
 
 template: disk_space_usage
       on: disk.space
+      os: linux
+   hosts: *
 families: *
     calc: $used * 100 / ($avail + $used)
    units: %
@@ -19,6 +25,8 @@ families: *
 
 template: disk_inode_usage
       on: disk.inodes
+      os: linux
+   hosts: *
 families: *
     calc: $used * 100 / ($avail + $used)
    units: %
@@ -43,6 +51,8 @@ families: *
 
 template: disk_fill_rate
       on: disk.space
+      os: linux
+   hosts: *
 families: *
   lookup: min -10m at -50m unaligned of avail
     calc: ($this - $avail) / (($now - $after) / 3600)
@@ -57,6 +67,8 @@ families: *
 
 template: out_of_disk_space_time
       on: disk.space
+      os: linux
+   hosts: *
 families: *
     calc: ($disk_fill_rate > 0) ? ($avail / $disk_fill_rate) : (inf)
    units: hours
@@ -77,6 +89,8 @@ families: *
 
 template: 10min_disk_utilization
       on: disk.util
+      os: linux
+   hosts: *
 families: *
   lookup: average -10m unaligned
    units: %
@@ -97,6 +111,8 @@ families: *
 
 template: 10min_disk_backlog
       on: disk.backlog
+      os: linux
+   hosts: *
 families: *
   lookup: average -10m unaligned
    units: ms
diff --git a/conf.d/health.d/entropy.conf b/conf.d/health.d/entropy.conf
index 5dd8af50..66d44ec1 100644
--- a/conf.d/health.d/entropy.conf
+++ b/conf.d/health.d/entropy.conf
@@ -5,6 +5,8 @@
 
    alarm: lowest_entropy
       on: system.entropy
+      os: linux
+   hosts: *
   lookup: min -10m unaligned
    units: entries
    every: 5m
diff --git a/conf.d/health.d/ipc.conf b/conf.d/health.d/ipc.conf
index ee7c4bad..03cf264d 100644
--- a/conf.d/health.d/ipc.conf
+++ b/conf.d/health.d/ipc.conf
@@ -1,6 +1,10 @@
 
+# you can disable an alarm notification by setting the 'to' line to: silent
+
    alarm: semaphores_used
       on: system.ipc_semaphores
+      os: linux
+   hosts: *
     calc: $semaphores * 100 / $ipc.semaphores.max
    units: %
    every: 10s
@@ -12,6 +16,8 @@
 
    alarm: semaphore_arrays_used
       on: system.ipc_semaphore_arrays
+      os: linux
+   hosts: *
     calc: $arrays * 100 / $ipc.semaphores.arrays.max
    units: %
    every: 10s
diff --git a/conf.d/health.d/memory.conf b/conf.d/health.d/memory.conf
index 3c904f6b..4a0e6e52 100644
--- a/conf.d/health.d/memory.conf
+++ b/conf.d/health.d/memory.conf
@@ -1,6 +1,10 @@
 
+# you can disable an alarm notification by setting the 'to' line to: silent
+
    alarm: 1hour_ecc_memory_correctable
       on: mem.ecc_ce
+      os: linux
+   hosts: *
   lookup: sum -10m unaligned
    units: errors
    every: 1m
@@ -11,6 +15,8 @@
 
    alarm: 1hour_ecc_memory_uncorrectable
       on: mem.ecc_ue
+      os: linux
+   hosts: *
   lookup: sum -10m unaligned
    units: errors
    every: 1m
@@ -21,6 +27,8 @@
 
    alarm: 1hour_memory_hw_corrupted
       on: mem.hwcorrupt
+      os: linux
+   hosts: *
     calc: $HardwareCorrupted
    units: MB
    every: 10s
diff --git a/conf.d/health.d/net.conf b/conf.d/health.d/net.conf
index bd288817..00a19861 100644
--- a/conf.d/health.d/net.conf
+++ b/conf.d/health.d/net.conf
@@ -1,4 +1,6 @@
 
+# you can disable an alarm notification by setting the 'to' line to: silent
+
 # -----------------------------------------------------------------------------
 # dropped packets
 
@@ -8,48 +10,56 @@
 
 template: inbound_packets_dropped
       on: net.drops
+      os: linux
+   hosts: *
 families: *
   lookup: sum -10m unaligned absolute of inbound
    units: packets
    every: 1m
-    warn: $this > 0
+    warn: $this >= 5
    delay: down 1h multiplier 1.5 max 2h
     info: interface inbound dropped packets in the last 10 minutes
       to: sysadmin
 
 template: outbound_packets_dropped
       on: net.drops
+      os: linux
+   hosts: *
 families: *
   lookup: sum -10m unaligned absolute of outbound
    units: packets
    every: 1m
-    warn: $this > 0
+    warn: $this >= 5
    delay: down 1h multiplier 1.5 max 2h
     info: interface outbound dropped packets in the last 10 minutes
       to: sysadmin
 
 template: inbound_packets_dropped_ratio
       on: net.packets
+      os: linux
+   hosts: *
 families: *
   lookup: sum -10m unaligned absolute of received
     calc: (($inbound_packets_dropped != nan AND $this > 0) ? ($inbound_packets_dropped * 100 / $this) : (0))
    units: %
    every: 1m
-    warn: $this > 0.5
-    crit: $this > 3
+    warn: $this >= 0.1
+    crit: $this >= 2
    delay: down 1h multiplier 1.5 max 2h
     info: the ratio of inbound dropped packets vs the total number of received packets of the network interface, during the last 10 minutes
       to: sysadmin
 
 template: outbound_packets_dropped_ratio
       on: net.packets
+      os: linux
+   hosts: *
 families: *
   lookup: sum -10m unaligned absolute of sent
     calc: (($outbound_packets_dropped != nan AND $this > 0) ? ($outbound_packets_dropped * 100 / $this) : (0))
    units: %
    every: 1m
-    warn: $this > 0.5
-    crit: $this > 3
+    warn: $this >= 0.1
+    crit: $this >= 2
    delay: down 1h multiplier 1.5 max 2h
     info: the ratio of outbound dropped packets vs the total number of sent packets of the network interface, during the last 10 minutes
       to: sysadmin
@@ -65,6 +75,8 @@ families: *
 
 template: 10min_fifo_errors
       on: net.fifo
+      os: linux
+   hosts: *
 families: *
   lookup: sum -10m unaligned absolute
    units: errors
@@ -86,6 +98,8 @@ families: *
 
 template: 1m_received_packets_rate
       on: net.packets
+      os: linux
+   hosts: *
 families: *
   lookup: average -1m of received
    units: packets
@@ -94,6 +108,8 @@ families: *
 
 template: 10s_received_packets_storm
       on: net.packets
+      os: linux
+   hosts: *
 families: *
   lookup: average -10s of received
     calc: $this * 100 / (($1m_received_packets_rate < 1000)?(1000):($1m_received_packets_rate))
diff --git a/conf.d/health.d/netfilter.conf b/conf.d/health.d/netfilter.conf
index 3dd6a67b..fa1732b3 100644
--- a/conf.d/health.d/netfilter.conf
+++ b/conf.d/health.d/netfilter.conf
@@ -1,6 +1,10 @@
 
+# you can disable an alarm notification by setting the 'to' line to: silent
+
    alarm: netfilter_last_collected_secs
       on: netfilter.conntrack_sockets
+      os: linux
+   hosts: *
     calc: $now - $last_collected_t
    units: seconds ago
    every: 10s
@@ -12,6 +16,8 @@
 
    alarm: netfilter_conntrack_full
       on: netfilter.conntrack_sockets
+      os: linux
+   hosts: *
   lookup: max -10s unaligned of connections
     calc: $this * 100 / $netfilter.conntrack.max
    units: %
diff --git a/conf.d/health.d/qos.conf b/conf.d/health.d/qos.conf
index 9e5939fd..7290d15f 100644
--- a/conf.d/health.d/qos.conf
+++ b/conf.d/health.d/qos.conf
@@ -1,10 +1,14 @@
 
+# you can disable an alarm notification by setting the 'to' line to: silent
+
 # check if a QoS class is dropping packets
 # the alarm is checked every 10 seconds
 # and examines the last minute of data
 
 #template: 10min_qos_packet_drops
 #      on: tc.qos_dropped
+#      os: linux
+#   hosts: *
 #  lookup: sum -10m unaligned absolute
 #   every: 30s
 #    warn: $this > 0
diff --git a/conf.d/health.d/ram.conf b/conf.d/health.d/ram.conf
index b99e5e22..8d0e8838 100644
--- a/conf.d/health.d/ram.conf
+++ b/conf.d/health.d/ram.conf
@@ -1,12 +1,18 @@
 
+# you can disable an alarm notification by setting the 'to' line to: silent
+
    alarm: used_ram_to_ignore
       on: system.ram
+      os: linux
+   hosts: *
     calc: ($zfs.arc_size.arcsz = nan)?(0):($zfs.arc_size.arcsz)
    every: 10s
     info: the amount of memory that is reported as used, but it is actually capable for resizing itself based on the system needs (eg. ZFS ARC)
 
    alarm: ram_in_use
       on: system.ram
+      os: linux
+   hosts: *
 #   calc: $used * 100 / ($used + $cached + $free)
     calc: ($used - $used_ram_to_ignore) * 100 / ($used - $used_ram_to_ignore + $cached + $free)
    units: %
diff --git a/conf.d/health.d/softnet.conf b/conf.d/health.d/softnet.conf
index 5faf9a9e..64e1c678 100644
--- a/conf.d/health.d/softnet.conf
+++ b/conf.d/health.d/softnet.conf
@@ -1,7 +1,12 @@
+
+# you can disable an alarm notification by setting the 'to' line to: silent
+
 # check for common /proc/net/softnet_stat errors
 
    alarm: 10min_netdev_backlog_exceeded
       on: system.softnet_stat
+      os: linux
+   hosts: *
   lookup: sum -10m unaligned absolute of dropped
    units: packets
    every: 1m
@@ -12,6 +17,8 @@
 
    alarm: 10min_netdev_budget_ran_outs
       on: system.softnet_stat
+      os: linux
+   hosts: *
   lookup: sum -10m unaligned absolute of squeezed
    units: events
    every: 1m
diff --git a/conf.d/health.d/swap.conf b/conf.d/health.d/swap.conf
index 7f57560e..830a9af9 100644
--- a/conf.d/health.d/swap.conf
+++ b/conf.d/health.d/swap.conf
@@ -1,6 +1,10 @@
 
+# you can disable an alarm notification by setting the 'to' line to: silent
+
    alarm: 30min_ram_swapped_out
       on: system.swapio
+      os: linux
+   hosts: *
   lookup: sum -30m unaligned absolute of out
           # we have to convert KB to MB by dividing $this (i.e. the result of the lookup) with 1024
     calc: $this / 1024 * 100 / ( $system.ram.used + $system.ram.cached + $system.ram.free )
@@ -14,6 +18,8 @@
 
    alarm: ram_in_swap
       on: system.swap
+      os: linux
+   hosts: *
     calc: $used * 100 / ( $system.ram.used + $system.ram.cached + $system.ram.free )
    units: % of RAM
    every: 10s
@@ -25,6 +31,8 @@
 
    alarm: used_swap
       on: system.swap
+      os: linux
+   hosts: *
     calc: $used * 100 / ( $used + $free )
    units: %
    every: 10s
diff --git a/conf.d/health.d/tcp_resets.conf b/conf.d/health.d/tcp_resets.conf
index 803c88a8..fec124ac 100644
--- a/conf.d/health.d/tcp_resets.conf
+++ b/conf.d/health.d/tcp_resets.conf
@@ -1,7 +1,12 @@
+
+# you can disable an alarm notification by setting the 'to' line to: silent
+
 # -----------------------------------------------------------------------------
 
    alarm: ipv4_tcphandshake_last_collected_secs
       on: ipv4.tcphandshake
+      os: linux
+   hosts: *
     calc: $now - $last_collected_t
    units: seconds ago
    every: 10s
@@ -16,6 +21,8 @@
 
    alarm: 1m_ipv4_tcp_resets_sent
       on: ipv4.tcphandshake
+      os: linux
+   hosts: *
   lookup: average -1m at -10s unaligned absolute of OutRsts
    units: tcp resets/s
    every: 10s
@@ -23,6 +30,8 @@
 
    alarm: 10s_ipv4_tcp_resets_sent
       on: ipv4.tcphandshake
+      os: linux
+   hosts: *
   lookup: average -10s unaligned absolute of OutRsts
    units: tcp resets/s
    every: 10s
@@ -37,6 +46,8 @@ options: no-clear-notification
 
    alarm: 1m_ipv4_tcp_resets_received
       on: ipv4.tcphandshake
+      os: linux
+   hosts: *
   lookup: average -1m at -10s unaligned absolute of AttemptFails
    units: tcp resets/s
    every: 10s
@@ -44,6 +55,8 @@ options: no-clear-notification
 
    alarm: 10s_ipv4_tcp_resets_received
       on: ipv4.tcphandshake
+      os: linux
+   hosts: *
   lookup: average -10s unaligned absolute of AttemptFails
    units: tcp resets/s
    every: 10s
diff --git a/conf.d/health.d/udp_errors.conf b/conf.d/health.d/udp_errors.conf
index 98e955c0..33338b83 100644
--- a/conf.d/health.d/udp_errors.conf
+++ b/conf.d/health.d/udp_errors.conf
@@ -1,7 +1,12 @@
+
+# you can disable an alarm notification by setting the 'to' line to: silent
+
 # -----------------------------------------------------------------------------
 
    alarm: ipv4_udperrors_last_collected_secs
       on: ipv4.udperrors
+      os: linux
+   hosts: *
     calc: $now - $last_collected_t
    units: seconds ago
    every: 10s
@@ -16,6 +21,8 @@
 
    alarm: 1m_ipv4_udp_receive_buffer_errors
       on: ipv4.udperrors
+      os: linux
+   hosts: *
   lookup: sum -1m unaligned absolute of RcvbufErrors
    units: errors
    every: 10s
@@ -30,6 +37,8 @@
 
    alarm: 1m_ipv4_udp_send_buffer_errors
       on: ipv4.udperrors
+      os: linux
+   hosts: *
   lookup: sum -1m unaligned absolute of SndbufErrors
    units: errors
    every: 10s
diff --git a/conf.d/health_alarm_notify.conf b/conf.d/health_alarm_notify.conf
index 4d8444ed..641272ce 100644
--- a/conf.d/health_alarm_notify.conf
+++ b/conf.d/health_alarm_notify.conf
@@ -94,6 +94,15 @@ curl=""
 # multiple recipients can be given like this:
 #              "admin1@example.com admin2@example.com ..."
 
+# the email address sending email notifications
+# the default is the system user netdata runs as (usually: netdata)
+# The following formats are supported:
+# EMAIL_SENDER="user@domain"
+# EMAIL_SENDER="User Name <user@domain>"
+# EMAIL_SENDER="'User Name' <user@domain>"
+# EMAIL_SENDER="\"User Name\" <user@domain>"
+EMAIL_SENDER=""
+
 # enable/disable sending emails
 SEND_EMAIL="YES"
 
@@ -101,6 +110,13 @@ SEND_EMAIL="YES"
 DEFAULT_RECIPIENT_EMAIL="root"
 # to receive only critical alarms, set it to "root|critical"
 
+# Optionally specify the encoding to list in the Content-Type header.
+# This doesn't change what encoding the e-mail is sent with, just what
+# the headers say it was encoded as.
+# This shouldn't need to be changed as it will almost always be
+# autodetected from the environment.
+#EMAIL_CHARSET="UTF-8"
+
 
 #------------------------------------------------------------------------------
 # pushover (pushover.net) global notification options
diff --git a/conf.d/node.d/fronius.conf.md b/conf.d/node.d/fronius.conf.md
index c80afa0b..622086b2 100644
--- a/conf.d/node.d/fronius.conf.md
+++ b/conf.d/node.d/fronius.conf.md
@@ -16,7 +16,7 @@ The module supports any number of servers. Sometimes there is a lag when collect
     "update_every": 5,
     "servers": [
         {
-            "name": "Solar",
+            "name": "solar",
             "hostname": "symo.ip.or.dns",
             "update_every": 5,
             "api_path": "/solar_api/v1/GetPowerFlowRealtimeData.fcgi"
diff --git a/conf.d/node.d/stiebeleltron.conf.md b/conf.d/node.d/stiebeleltron.conf.md
new file mode 100644
index 00000000..6ae5aa1c
--- /dev/null
+++ b/conf.d/node.d/stiebeleltron.conf.md
@@ -0,0 +1,453 @@
+[Stiebel Eltron Heat pump system with ISG](https://www.stiebel-eltron.com/en/home/products-solutions/renewables/controller_energymanagement/internet_servicegateway/isg_web.html)
+
+Original author: BrainDoctor (github)
+
+The module supports any metrics that are parseable with RegEx. There is no API that gives direct access to the values (AFAIK), so the "workaround" is to parse the HTML output of the ISG.
+
+### Testing
+This plugin has been tested within the following environment:
+  * ISG version: 8.5.6
+  * MFG version: 12
+  * Controller version: 9
+  * July (summer time, not much activity)
+  * Interface language: English
+  * login- and password-less ISG web access (without HTTPS it's useless anyway)
+  * Heatpump model: WPL 25 I-2
+  * Hot water boiler model: 820 WT 1
+
+So, if the language is set to english, copy the following configuration into `/etc/netdata/node.d/stiebeleltron.conf` and change the `url`s.
+
+In my case, the ISG is relatively slow with responding (at least 1s, but also up to 4s). Collecting metrics every 10s is more than enough for me.
+
+### How to update the config
+
+* The dimensions support variable digits, the default is `1`. Most of the values printed by ISG are using 1 digit, some use 2.
+* The dimensions also support the `multiplier` and `divisor` attributes, however the divisor gets overridden by `digits`, if specified. Default is `1`.
+* The test string for the regex is always the whole HTML output from the url. For each parameter you need to have a regular expression that extracts the value from the HTML source in the first capture group.
+  Recommended: [regexr.com](regexr.com) for testing and matching, [freeformatter.com](https://www.freeformatter.com/json-escape.html) for escaping the newly created regex for the JSON config.
+
+The charts are being generated using the configuration below. So if your installation is in another language or has other metrics, just adapt the structure or regexes.
+### Configuration template
+```json
+{
+    "enable_autodetect": false,
+    "update_every": 10,
+    "pages": [
+        {
+            "name": "System",
+            "id": "system",
+            "url": "http://machine.ip.or.dns/?s=1,0",
+            "update_every": 10,
+            "categories": [ 
+		{
+                    "id": "eletricreheating",
+                    "name": "electric reheating",
+                    "charts": [
+                        {
+                            "title": "Dual Mode Reheating Temperature",
+                            "id": "reheatingtemp",
+                            "unit": "Celsius",
+                            "type": "line",
+                            "prio": 1,
+                            "dimensions": [
+                                {
+                                    "name": "Heating",
+                                    "id": "dualmodeheatingtemp",
+                                    "regex": "DUAL MODE TEMP HEATING<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>"
+                                },
+                                {
+                                    "name": "Hot Water",
+                                    "id" : "dualmodehotwatertemp",
+                                    "regex": "DUAL MODE TEMP DHW<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>"
+                                }
+                            ]
+                        }
+                    ]
+                },
+                {
+                    "id": "roomtemp",
+                    "name": "room temperature",
+                    "charts": [
+                        {
+                            "title": "Heat Circuit 1",
+                            "id": "hc1",
+                            "unit": "Celsius",
+                            "type": "line",
+                            "prio": 1,
+                            "dimensions": [
+                                {
+                                    "name": "Actual",
+                                    "id": "actual",
+                                    "regex": "<tr class=\"even\">\\s*<td.*>ACTUAL TEMPERATURE HC 1<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>\\s*<\\\/tr>"
+                                },
+                                {
+                                    "name": "Set",
+                                    "id" : "set",
+                                    "regex": "<tr class=\"odd\">\\s*<td.*>SET TEMPERATURE HC 1<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>\\s*<\\\/tr>"
+                                }
+                            ]
+                        },
+                        {
+                            "title": "Heat Circuit 2",
+                            "id": "hc2",
+                            "unit": "Celsius",
+                            "type": "line",
+                            "prio": 2,
+                            "dimensions": [
+                                {
+                                    "name": "Actual",
+                                    "id": "actual",
+                                    "regex": "<tr class=\"even\">\\s*<td.*>ACTUAL TEMPERATURE HC 2<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>\\s*<\\\/tr>"
+                                },
+                                {
+                                    "name": "Set",
+                                    "id" : "set",
+                                    "regex": "<tr class=\"odd\">\\s*<td.*>SET TEMPERATURE HC 2<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>\\s*<\\\/tr>"
+                                }
+                            ]
+                        }
+                    ]
+                },
+		{
+                    "id": "heating",
+                    "name": "heating",
+                    "charts": [
+                        {
+                            "title": "Heat Circuit 1",
+                            "id": "hc1",
+                            "unit": "Celsius",
+                            "type": "line",
+                            "prio": 1,
+                            "dimensions": [
+                                {
+                                    "name": "Actual",
+                                    "id": "actual",
+                                    "regex": "<tr class=\"odd\">\\s*<td.*>ACTUAL TEMPERATURE HC 1<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>\\s*<\\\/tr>"
+                                },
+                                {
+                                    "name": "Set",
+                                    "id" : "set",
+                                    "regex": "<tr class=\"even\">\\s*<td.*>SET TEMPERATURE HC 1<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>\\s*<\\\/tr>"
+                                }
+                            ]
+                        },
+                        {
+                            "title": "Heat Circuit 2",
+                            "id": "hc2",
+                            "unit": "Celsius",
+                            "type": "line",
+                            "prio": 2,
+                            "dimensions": [
+                                {
+                                    "name": "Actual",
+                                    "id": "actual",
+                                    "regex": "<tr class=\"odd\">\\s*<td.*>ACTUAL TEMPERATURE HC 2<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>\\s*<\\\/tr>"
+                                },
+                                {
+                                    "name": "Set",
+                                    "id" : "set",
+                                    "regex": "<tr class=\"even\">\\s*<td.*>SET TEMPERATURE HC 2<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>\\s*<\\\/tr>"
+                                }
+                            ]
+                        },
+                        {
+                            "title": "Flow Temperature",
+                            "id": "flowtemp",
+                            "unit": "Celsius",
+                            "type": "line",
+                            "prio": 3,
+                            "dimensions": [
+                                {
+                                    "name": "Heating",
+                                    "id": "heating",
+                                    "regex": "ACTUAL FLOW TEMPERATURE WP<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>"
+                                },
+                                {
+                                    "name": "Reheating",
+                                    "id" : "reheating",
+                                    "regex": "ACTUAL FLOW TEMPERATURE NHZ<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>"
+                                }
+                            ]
+                        },
+                        {
+                            "title": "Buffer Temperature",
+                            "id": "buffertemp",
+                            "unit": "Celsius",
+                            "type": "line",
+                            "prio": 4,
+                            "dimensions": [
+                                {
+                                    "name": "Actual",
+                                    "id": "actual",
+                                    "regex": "ACTUAL BUFFER TEMPERATURE<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>"
+                                },
+                                {
+                                    "name": "Set",
+                                    "id" : "set",
+                                    "regex": "SET BUFFER TEMPERATURE<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>"
+                                }
+                            ]
+                        },
+                        {
+                            "title": "Fixed Temperature",
+                            "id": "fixedtemp",
+                            "unit": "Celsius",
+                            "type": "line",
+                            "prio": 5,
+                            "dimensions": [
+                                {
+                                    "name": "Set",
+                                    "id" : "setfixed",
+                                    "regex": "SET FIXED TEMPERATURE<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>"
+                                }
+                            ]
+                        },
+                        {
+                            "title": "Pre-flow Temperature",
+                            "id": "preflowtemp",
+                            "unit": "Celsius",
+                            "type": "line",
+                            "prio": 6,
+                            "dimensions": [
+                                {
+                                    "name": "Actual",
+                                    "id": "actualreturn",
+                                    "regex": "ACTUAL RETURN TEMPERATURE<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>"
+                                }
+                            ]
+                        }
+                    ]
+                },
+		{
+                    "id": "hotwater",
+                    "name": "hot water",
+                    "charts": [
+			{
+                            "title": "Hot Water Temperature",
+                            "id": "hotwatertemp",
+                            "unit": "Celsius",
+                            "type": "line",
+                            "prio": 1,
+                            "dimensions": [
+                                {
+                                    "name": "Actual",
+                                    "id": "actual",
+                                    "regex": "ACTUAL TEMPERATURE<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>"
+                                },
+                                {
+                                    "name": "Set",
+                                    "id" : "set",
+                                    "regex": "SET TEMPERATURE<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>"
+                                }
+                            ]
+                        }
+                    ]
+                },
+		{
+                    "id": "general",
+                    "name": "general",
+                    "charts": [
+                        {
+                            "title": "Outside Temperature",
+                            "id": "outside",
+                            "unit": "Celsius",
+                            "type": "line",
+                            "prio": 1,
+                            "dimensions": [
+                                {
+                                    "name": "Outside temperature",
+                                    "id": "outsidetemp",
+                                    "regex": "OUTSIDE TEMPERATURE<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>\\s*<\\\/tr>"
+                                }
+                            ]
+                        },
+                        {
+                            "title": "Condenser Temperature",
+                            "id": "condenser",
+                            "unit": "Celsius",
+                            "type": "line",
+                            "prio": 2,
+                            "dimensions": [
+                                {
+                                    "name": "Condenser",
+                                    "id": "condenser",
+                                    "regex": "CONDENSER TEMP\\.<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>"
+                                }
+                            ]
+                        },
+			{
+                            "title": "Heating Circuit Pressure",
+                            "id": "heatingcircuit",
+                            "unit": "bar",							
+                            "type": "line",
+                            "prio": 3,
+                            "dimensions": [
+                                {
+                                    "name": "Heating Circuit",
+                                    "id": "heatingcircuit",
+				    "digits": 2,
+                                    "regex": "PRESSURE HTG CIRC<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]*).*<\\\/td>"
+                                }
+                            ]
+                        },
+			{
+                            "title": "Flow Rate",
+                            "id": "flowrate",
+                            "unit": "liters/min",
+                            "type": "line",
+                            "prio": 4,
+                            "dimensions": [
+                                {
+                                    "name": "Flow Rate",
+                                    "id": "flowrate",
+				    "digits": 2,
+                                    "regex": "FLOW RATE<\\\/td>\\s*<td.*>(-?[0-9]+,[0-9]+).*<\\\/td>"
+                                }
+                            ]
+                        },
+			{
+                            "title": "Output",
+                            "id": "output",
+                            "unit": "%",
+                            "type": "line",
+                            "prio": 5,
+                            "dimensions": [
+                                {
+                                    "name": "Heat Pump",
+                                    "id": "outputheatpump",
+                                    "regex": "OUTPUT HP<\\\/td>\\s*<td.*>(-?[0-9]+,?[0-9]*).*<\\\/td>"
+                                },
+				{
+                                    "name": "Water Pump",
+                                    "id": "intpumprate",
+                                    "regex": "INT PUMP RATE<\\\/td>\\s*<td.*>(-?[0-9]+,?[0-9]*).*<\\\/td>"
+                                }
+                            ]
+                        }
+                    ]
+                }
+            ]
+        },
+	{
+            "name": "Heat Pump",
+            "id": "heatpump",
+            "url": "http://machine.ip.or.dns/?s=1,1",
+            "update_every": 10,
+            "categories": [
+		{
+                    "id": "runtime",
+                    "name": "runtime",
+                    "charts": [
+                        {
+                            "title": "Compressor",
+                            "id": "compressor",
+                            "unit": "h",
+                            "type": "line",
+                            "prio": 1,
+                            "dimensions": [
+                                {
+                                    "name": "Heating",
+                                    "id": "heating",
+                                    "regex": "RNT COMP 1 HEA<\\\/td>\\s*<td.*>(-?[0-9]+,?[0-9]*)"
+                                },
+                                {
+                                    "name": "Hot Water",
+                                    "id" : "hotwater",
+                                    "regex": "RNT COMP 1 DHW<\\\/td>\\s*<td.*>(-?[0-9]+,?[0-9]*)"
+                                }
+                            ]
+                        },
+			{
+                            "title": "Reheating",
+                            "id": "reheating",
+                            "unit": "h",
+                            "type": "line",
+                            "prio": 2,
+                            "dimensions": [
+                                {
+                                    "name": "Reheating 1",
+                                    "id": "rh1",
+                                    "regex": "BH 1<\\\/td>\\s*<td.*>(-?[0-9]+,?[0-9]*)"
+                                },
+                                {
+                                    "name": "Reheating 2",
+                                    "id" : "rh2",
+                                    "regex": "BH 2<\\\/td>\\s*<td.*>(-?[0-9]+,?[0-9]*)"
+                                }
+                            ]
+                        }
+                    ]
+                },
+		{
+                    "id": "processdata",
+                    "name": "process data",
+                    "charts": [
+                        {
+                            "title": "Remaining Compressor Rest Time",
+                            "id": "remaincomp",
+                            "unit": "s",
+                            "type": "line",
+                            "prio": 1,
+                            "dimensions": [
+                                {
+                                    "name": "Timer",
+                                    "id": "timer",
+                                    "regex": "COMP DLAY CNTR<\\\/td>\\s*<td.*>(-?[0-9]+,?[0-9]*)"
+                                }
+                            ]
+                        }
+                    ]
+                },
+		{
+                    "id": "energy",
+                    "name": "energy",
+                    "charts": [
+                        {
+                            "title": "Compressor Today",
+                            "id": "compressorday",
+                            "unit": "kWh",
+                            "type": "line",
+                            "prio": 1,
+                            "dimensions": [
+                                {
+                                    "name": "Heating",
+                                    "id": "heating",
+				    "digits": 3,
+                                    "regex": "COMPRESSOR HEATING DAY<\\\/td>\\s*<td.*>(-?[0-9]+,?[0-9]*)"
+                                },
+				{
+                                    "name": "Hot Water",
+                                    "id": "hotwater",
+				    "digits": 3,
+                                    "regex": "COMPRESSOR DHW DAY<\\\/td>\\s*<td.*>(-?[0-9]+,?[0-9]*)"
+                                }
+                            ]
+                        },
+			{
+                            "title": "Compressor Total",
+                            "id": "compressortotal",
+                            "unit": "MWh",
+                            "type": "line",
+                            "prio": 2,
+                            "dimensions": [
+                                {
+                                    "name": "Heating",
+                                    "id": "heating",
+				    "digits": 3,
+                                    "regex": "COMPRESSOR HEATING TOTAL<\\\/td>\\s*<td.*>(-?[0-9]+,?[0-9]*)"
+                                },
+				{
+                                    "name": "Hot Water",
+                                    "id": "hotwater",
+				    "digits": 3,
+                                    "regex": "COMPRESSOR DHW TOTAL<\\\/td>\\s*<td.*>(-?[0-9]+,?[0-9]*)"
+                                }
+                            ]
+                        }
+                    ]
+                }
+            ]
+        }
+    ]
+}
+```
diff --git a/conf.d/python.d.conf b/conf.d/python.d.conf
index 0a37e40a..741d4991 100644
--- a/conf.d/python.d.conf
+++ b/conf.d/python.d.conf
@@ -30,6 +30,7 @@ log_interval: 3600
 apache_cache: no
 # apache: yes
 # bind_rndc: yes
+# chrony: yes
 # cpufreq: yes
 # cpuidle: yes
 # dns_query_time: yes
diff --git a/conf.d/python.d/chrony.conf b/conf.d/python.d/chrony.conf
new file mode 100644
index 00000000..46229687
--- /dev/null
+++ b/conf.d/python.d/chrony.conf
@@ -0,0 +1,72 @@
+# netdata python.d.plugin configuration for chrony 
+#
+# This file is in YaML format. Generally the format is:
+#
+# name: value
+#
+# There are 2 sections:
+#  - global variables
+#  - one or more JOBS
+#
+# JOBS allow you to collect values from multiple sources.
+# Each source will have its own set of charts.
+#
+# JOB parameters have to be indented (using spaces only, example below).
+
+# ----------------------------------------------------------------------
+# Global Variables
+# These variables set the defaults for all JOBs, however each JOB
+# may define its own, overriding the defaults.
+
+# update_every sets the default data collection frequency.
+# If unset, the python.d.plugin default is used.
+update_every: 5
+
+# priority controls the order of charts at the netdata dashboard.
+# Lower numbers move the charts towards the top of the page.
+# If unset, the default for python.d.plugin is used.
+# priority: 60000
+
+# retries sets the number of retries to be made in case of failures.
+# If unset, the default for python.d.plugin is used.
+# Attempts to restore the service are made once every update_every
+# and only if the module has collected values in the past.
+# retries: 5
+
+# ----------------------------------------------------------------------
+# JOBS (data collection sources)
+#
+# The default JOBS share the same *name*. JOBS with the same name
+# are mutually exclusive. Only one of them will be allowed running at
+# any time. This allows autodetection to try several alternatives and
+# pick the one that works.
+#
+# Any number of jobs is supported.
+#
+# All python.d.plugin JOBS (for all its modules) support a set of
+# predefined parameters. These are:
+#
+# job_name:
+#     name: myname     # the JOB's name as it will appear at the
+#                      # dashboard (by default is the job_name)
+#                      # JOBs sharing a name are mutually exclusive
+#     update_every: 1  # the JOB's data collection frequency
+#     priority: 60000  # the JOB's order on the dashboard
+#     retries: 5       # the JOB's number of restoration attempts
+#
+# Additionally to the above, chrony also supports the following:
+#
+#     command: 'chrony tracking' # the command to run
+#
+
+# ----------------------------------------------------------------------
+# REQUIRED chrony CONFIGURATION
+#
+# netdata will query chrony as user netdata.
+# verify that user netdata is allowed to call 'chronyc tracking'
+# Check cmdallow in chrony.conf
+# ----------------------------------------------------------------------
+# AUTO-DETECTION JOBS
+
+local:
+  command: 'chronyc -n tracking'
diff --git a/conf.d/python.d/postgres.conf b/conf.d/python.d/postgres.conf
index 12dddae6..1dbb64f4 100644
--- a/conf.d/python.d/postgres.conf
+++ b/conf.d/python.d/postgres.conf
@@ -75,6 +75,9 @@
 # a postgres user for netdata and add its password below to allow
 # netdata connect.
 #
+# Without superuser access, netdata won't be able to generate the write
+# ahead log and the background writer charts.
+#
 # ----------------------------------------------------------------------
 
 socket:
diff --git a/conf.d/python.d/tomcat.conf b/conf.d/python.d/tomcat.conf
index aef9631b..ce89175f 100644
--- a/conf.d/python.d/tomcat.conf
+++ b/conf.d/python.d/tomcat.conf
@@ -63,7 +63,10 @@
 #     user: 'username'
 #     pass: 'password'
 #
-
+# if you have multiple connectors, the following are supported:
+#
+#     connector_name: 'ajp-bio-8009' # default is null, which use first connector in status XML
+#
 # ----------------------------------------------------------------------
 # AUTO-DETECTION JOBS
 # only one of them will run (they have the same name)
diff --git a/conf.d/python.d/web_log.conf b/conf.d/python.d/web_log.conf
index e51b565d..cd1f1af0 100644
--- a/conf.d/python.d/web_log.conf
+++ b/conf.d/python.d/web_log.conf
@@ -76,7 +76,7 @@
 #          observium: 'observium.*'       # name(dimension): REGEX to match
 #          stub_status: 'stub_status'     # name(dimension): REGEX to match
 #     custom_log_format:                  # define a custom log format
-#          pattern: '(?P<address>[\da-f.:]+) -.*?"(?P<method>[A-Z]+) (?P<url>.*?)" (?P<code>[1-9]\d{2}) (?P<bytes_sent>\d+) (?P<resp_length>\d+) (?P<resp_time>\d\.\d+) '
+#          pattern: '(?P<address>[\da-f.:]+) -.*?"(?P<method>[A-Z]+) (?P<url>.*?)" (?P<code>[1-9]\d{2}) (?P<bytes_sent>\d+) (?P<resp_length>\d+) (?P<resp_time>\d+\.\d+) '
 #          time_multiplier: 1000000       # type <int> - convert time to microseconds
 
 # ----------------------------------------------------------------------