Merging upstream version 1.17.0.

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

1 files changed, 42 insertions, 45 deletions

diff --git a/collectors/README.md b/collectors/README.md
index 725213889..fe6939f63 100644
--- a/collectors/README.md
+++ b/collectors/README.md
@@ -1,49 +1,49 @@
 # Data collection plugins
 
-netdata supports **internal** and **external** data collection plugins:
+Netdata supports **internal** and **external** data collection plugins:
 
-- **internal** plugins are written in `C` and run as threads inside the netdata daemon.
+-   **internal** plugins are written in `C` and run as threads inside the `netdat`a\` daemon.
 
-- **external** plugins may be written in any computer language and are spawn as independent long-running processes by the netdata daemon.
-   They communicate with the netdata daemon via `pipes` (`stdout` communication).
+-   **external** plugins may be written in any computer language and are spawn as independent long-running processes by the `netdata` daemon.
+     They communicate with the `netdata` daemon via `pipes` (`stdout` communication).
 
-To minimize the number of processes spawn for data collection, netdata also supports **plugin orchestrators**.
+To minimize the number of processes spawn for data collection, Netdata also supports **plugin orchestrators**.
 
-- **plugin orchestrators** are external plugins that do not collect any data by themeselves.
-   Instead they support data collection **modules** written in the language of the orchestrator.
-   Usually the orchestrator provides a higher level abstraction, making it ideal for writing new
-   data collection modules with the minimum of code.
+-   **plugin orchestrators** are external plugins that do not collect any data by themeselves.
+     Instead they support data collection **modules** written in the language of the orchestrator.
+     Usually the orchestrator provides a higher level abstraction, making it ideal for writing new
+     data collection modules with the minimum of code.
 
-   Currently netdata provides plugin orchestrators
-   BASH v4+ [charts.d.plugin](charts.d.plugin/),
-   node.js [node.d.plugin](node.d.plugin/) and
-   python v2+ (including v3) [python.d.plugin](python.d.plugin/).
+     Currently Netdata provides plugin orchestrators
+     BASH v4+ [charts.d.plugin](charts.d.plugin/),
+     node.js [node.d.plugin](node.d.plugin/) and
+     python v2+ (including v3) [python.d.plugin](python.d.plugin/).
 
 ## Netdata Plugins
 
-plugin|lang|O/S|runs as|modular|description
-:---:|:---:|:---:|:---:|:---:|:---
-[apps.plugin](apps.plugin/)|`C`|linux, freebsd|external|-|monitors the whole process tree on Linux and FreeBSD and breaks down system resource usage by **process**, **user** and **user group**.
-[cgroups.plugin](cgroups.plugin/)|`C`|linux|internal|-|collects resource usage of **Containers**, libvirt **VMs** and **systemd services**, on Linux systems
-[charts.d.plugin](charts.d.plugin/)|`BASH` v4+|any|external|yes|a **plugin orchestrator** for data collection modules written in `BASH` v4+.
-[checks.plugin](checks.plugin/)|`C`|any|internal|-|a debugging plugin (by default it is disabled)
-[cups.plugin](cups.plugin/)|`C`|any|external|-|monitors **CUPS**
-[diskspace.plugin](diskspace.plugin/)|`C`|linux|internal|-|collects disk space usage metrics on Linux mount points
-[fping.plugin](fping.plugin/)|`C`|any|external|-|measures network latency, jitter and packet loss between the monitored node and any number of remote network end points.
-[ioping.plugin](ioping.plugin/)|`C`|any|external|-|measures disk read/write latency.
-[freebsd.plugin](freebsd.plugin/)|`C`|freebsd|internal|yes|collects resource usage and performance data on FreeBSD systems
-[freeipmi.plugin](freeipmi.plugin/)|`C`|linux, freebsd|external|-|collects metrics from enterprise hardware sensors, on Linux and FreeBSD servers.
-[idlejitter.plugin](idlejitter.plugin/)|`C`|any|internal|-|measures CPU latency and jitter on all operating systems
-[macos.plugin](macos.plugin/)|`C`|macos|internal|yes|collects resource usage and performance data on MacOS systems
-[nfacct.plugin](nfacct.plugin/)|`C`|linux|external|-|collects netfilter firewall, connection tracker and accounting metrics using `libmnl` and `libnetfilter_acct`
-[xenstat.plugin](xenstat.plugin/)|`C`|linux|external|-|collects XenServer and XCP-ng metrics using `libxenstat`
-[perf.plugin](perf.plugin/)|`C`|linux|external|-|collects CPU performance metrics using performance monitoring units (PMU).
-[node.d.plugin](node.d.plugin/)|`node.js`|any|external|yes|a **plugin orchestrator** for data collection modules written in `node.js`.
-[plugins.d](plugins.d/)|`C`|any|internal|-|implements the **external plugins** API and serves external plugins
-[proc.plugin](proc.plugin/)|`C`|linux|internal|yes|collects resource usage and performance data on Linux systems
-[python.d.plugin](python.d.plugin/)|`python` v2+|any|external|yes|a **plugin orchestrator** for data collection modules written in `python` v2 or v3 (both are supported).
-[statsd.plugin](statsd.plugin/)|`C`|any|internal|-|implements a high performance **statsd** server for netdata
-[tc.plugin](tc.plugin/)|`C`|linux|internal|-|collects traffic QoS metrics (`tc`) of Linux network interfaces
+|plugin|lang|O/S|runs as|modular|description|
+|:----:|:--:|:-:|:-----:|:-----:|:----------|
+|[apps.plugin](apps.plugin/)|`C`|linux, freebsd|external|-|monitors the whole process tree on Linux and FreeBSD and breaks down system resource usage by **process**, **user** and **user group**.|
+|[cgroups.plugin](cgroups.plugin/)|`C`|linux|internal|-|collects resource usage of **Containers**, libvirt **VMs** and **systemd services**, on Linux systems|
+|[charts.d.plugin](charts.d.plugin/)|`BASH` v4+|any|external|yes|a **plugin orchestrator** for data collection modules written in `BASH` v4+.|
+|[checks.plugin](checks.plugin/)|`C`|any|internal|-|a debugging plugin (by default it is disabled)|
+|[cups.plugin](cups.plugin/)|`C`|any|external|-|monitors **CUPS**|
+|[diskspace.plugin](diskspace.plugin/)|`C`|linux|internal|-|collects disk space usage metrics on Linux mount points|
+|[fping.plugin](fping.plugin/)|`C`|any|external|-|measures network latency, jitter and packet loss between the monitored node and any number of remote network end points.|
+|[ioping.plugin](ioping.plugin/)|`C`|any|external|-|measures disk read/write latency.|
+|[freebsd.plugin](freebsd.plugin/)|`C`|freebsd|internal|yes|collects resource usage and performance data on FreeBSD systems|
+|[freeipmi.plugin](freeipmi.plugin/)|`C`|linux, freebsd|external|-|collects metrics from enterprise hardware sensors, on Linux and FreeBSD servers.|
+|[idlejitter.plugin](idlejitter.plugin/)|`C`|any|internal|-|measures CPU latency and jitter on all operating systems|
+|[macos.plugin](macos.plugin/)|`C`|macos|internal|yes|collects resource usage and performance data on MacOS systems|
+|[nfacct.plugin](nfacct.plugin/)|`C`|linux|external|-|collects netfilter firewall, connection tracker and accounting metrics using `libmnl` and `libnetfilter_acct`|
+|[xenstat.plugin](xenstat.plugin/)|`C`|linux|external|-|collects XenServer and XCP-ng metrics using `libxenstat`|
+|[perf.plugin](perf.plugin/)|`C`|linux|external|-|collects CPU performance metrics using performance monitoring units (PMU).|
+|[node.d.plugin](node.d.plugin/)|`node.js`|any|external|yes|a **plugin orchestrator** for data collection modules written in `node.js`.|
+|[plugins.d](plugins.d/)|`C`|any|internal|-|implements the **external plugins** API and serves external plugins|
+|[proc.plugin](proc.plugin/)|`C`|linux|internal|yes|collects resource usage and performance data on Linux systems|
+|[python.d.plugin](python.d.plugin/)|`python` v2+|any|external|yes|a **plugin orchestrator** for data collection modules written in `python` v2 or v3 (both are supported).|
+|[statsd.plugin](statsd.plugin/)|`C`|any|internal|-|implements a high performance **statsd** server for Netdata|
+|[tc.plugin](tc.plugin/)|`C`|linux|internal|-|collects traffic QoS metrics (`tc`) of Linux network interfaces|
 
 ## Enabling and Disabling plugins
 
@@ -59,7 +59,7 @@ All **external plugins** are managed by [plugins.d](plugins.d/), which provides
 
 ### Internal Plugins
 
-Each of the internal plugins runs as a thread inside the netdata daemon.
+Each of the internal plugins runs as a thread inside the `netdata` daemon.
 Once this thread has started, the plugin may spawn additional threads according to its design.
 
 #### Internal Plugins API
@@ -72,7 +72,7 @@ collect_data() {
 
     collected_number collected_value = collect_a_value();
 
-    // give the metrics to netdata
+    // give the metrics to Netdata
 
     static RRDSET *st = NULL; // the chart
     static RRDDIM *rd = NULL; // a dimension attached to this chart
@@ -100,25 +100,22 @@ collect_data() {
     }
     else {
         // this chart is already created
-        // let netdata know we start a new iteration on it
+        // let Netdata know we start a new iteration on it
         rrdset_next(st);
     }
 
     // give the collected value(s) to the chart
     rrddim_set_by_pointer(st, rd, collected_value);
 
-    // signal netdata we are done with this iteration
+    // signal Netdata we are done with this iteration
     rrdset_done(st);
 }
 ```
 
-Of course netdata has a lot of libraries to help you also in collecting the metrics.
-The best way to find your way through this, is to examine what other similar plugins do.
-
+Of course, Netdata has a lot of libraries to help you also in collecting the metrics. The best way to find your way through this, is to examine what other similar plugins do.
 
 ### External Plugins
 
 **External plugins** use the API and are managed by [plugins.d](plugins.d/).
 
-
-[![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%2Fcollectors%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![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%2Fcollectors%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)