Updates in various READMEs while testing the link checker (#4671)

* Add checklinks.sh to validate links in MD files and fix them for both the repo and html static site

* Add checklinks.sh to validate links in MD files and fix them for both the repo and html static site

* Minor link fixes, based on output from the linkchecker

* About 50% done

* Converted absolute links to relative

* Close to being functional...

* Getting closer...

* Corrected edit files link from htmldoc branch to master

* Replaced absolute links with relative and fixed incorrect heading hierarchy

* Seems to be working. Will do all wiki conversions and then commit the final version

* Wiki links replaced by the link checker for test

* Replacement work fine, but correct location for simple patterns has moved to libnetdata/simple_pattern

* Corrected wiki links in READMEs, but most are in code files

* More simple pattern link replacements

* Want to merge current changes first and then continue with the link checker

* Add checklinks.sh to validate links in MD files and fix them for both the repo and html static site

* Minor link fixes, based on output from the linkchecker

* About 50% done

* Converted absolute links to relative

* Close to being functional...

* Getting closer...

* Corrected edit files link from htmldoc branch to master

* Replaced absolute links with relative and fixed incorrect heading hierarchy

* Seems to be working. Will do all wiki conversions and then commit the final version

* Wiki links replaced by the link checker for test

* Replacement work fine, but correct location for simple patterns has moved to libnetdata/simple_pattern

* Corrected wiki links in READMEs, but most are in code files

* More simple pattern link replacements

* Want to merge current changes first and then continue with the link checker

* ./# converted to #

backends/prometheus/README.md

@@ -9,7 +9,7 @@ Prometheus is a distributed monitoring system which offers a very simple setup a
 
 ### Installing netdata
 
-There are number of ways to install netdata according to [Installation](https://github.com/netdata/netdata/wiki/Installation)  
+There are number of ways to install netdata according to [Installation](../../installer/#installation)  
 The suggested way of installing the latest netdata and keep it upgrade automatically. Using one line installation:
 
 ```

collectors/cgroups.plugin/README.md

@@ -54,7 +54,7 @@ To provide a sane default for this setting, netdata uses the following pattern l
 	search for cgroups in subpaths matching =  !*/init.scope  !*-qemu  !/init.scope  !/system  !/systemd  !/user  !/user.slice  * 
 ```
 
-So, we disable checking for **child cgroups** in systemd internal cgroups ([systemd services are monitored by netdata](https://github.com/netdata/netdata/wiki/monitoring-systemd-services)), user cgroups (normally used for desktop and remote user sessions), qemu virtual machines (child cgroups of virtual machines) and `init.scope`. All others are enabled.
+So, we disable checking for **child cgroups** in systemd internal cgroups ([systemd services are monitored by netdata](#monitoring-systemd-services)), user cgroups (normally used for desktop and remote user sessions), qemu virtual machines (child cgroups of virtual machines) and `init.scope`. All others are enabled.
 
 
 ### enabled cgroups

collectors/python.d.plugin/README.md

@@ -74,7 +74,7 @@ Writing new python module is simple. You just need to remember to include 5 majo
 - **_get_data** method
 - all code needs to be compatible with Python 2 (**≥ 2.7**) *and* 3 (**≥ 3.1**)
 
-If you plan to submit the module in a PR, make sure and go through the [PR checklist for new modules](https://github.com/netdata/netdata/wiki/New-Module-PR-Checklist) beforehand to make sure you have updated all the files you need to.
+If you plan to submit the module in a PR, make sure and go through the [PR checklist for new modules](#pull-request-checklist-for-python-plugins) beforehand to make sure you have updated all the files you need to.
 
 ### Global variables `ORDER` and `CHART`
 

collectors/python.d.plugin/go_expvar/README.md

@@ -192,7 +192,7 @@ See [this issue](https://github.com/netdata/netdata/pull/1902#issuecomment-28449
 Please see these two links to the official netdata documentation for more information about the values:
 
 - [External plugins - charts](../../plugins.d/#chart)
-- [Chart variables](https://github.com/netdata/netdata/wiki/How-to-write-new-module#global-variables-order-and-chart)
+- [Chart variables](../#global-variables-order-and-chart)
 
 **Line definitions**
 

collectors/python.d.plugin/web_log/README.md

@@ -104,7 +104,7 @@ This is a nice view of the traffic the web server is receiving and is sending.
 
 What is important to know for this chart, is that the bandwidth used for each request and response is accounted at the time the log is written. Since [**netdata**](https://my-netdata.io/) refreshes this chart every single second, you may have unrealistic spikes is the size of the requests or responses is too big. The reason is simple: a response may have needed 1 minute to be completed, but all the bandwidth used during that minute for the specific response will be accounted at the second the log line is written.
 
-As the legend on the chart suggests, you can use FireQoS to setup QoS on the web server ports and IPs to accurately measure the bandwidth the web server is using. Actually, [there may be a few more reasons to install QoS on your servers](https://github.com/netdata/netdata/wiki/You-should-install-QoS-on-all-your-servers)...
+As the legend on the chart suggests, you can use FireQoS to setup QoS on the web server ports and IPs to accurately measure the bandwidth the web server is using. Actually, [there may be a few more reasons to install QoS on your servers](../../tc.plugin/#tcplugin)...
 
 **Bandwidth** KB/s
  * received (bandwidth of requests)

collectors/tc.plugin/README.md

@@ -66,7 +66,7 @@ QoS is about 2 features:
 
    When your system is under a DDoS attack, it will get a lot more bandwidth compared to the one it can handle and probably your applications will crash. Setting a limit on the inbound traffic using QoS, will protect your servers (throttle the requests) and depending on the size of the attack may allow your legitimate users to access the server, while the attack is taking place.
 
-   Using QoS together with a [SYNPROXY](https://github.com/netdata/netdata/wiki/Monitoring-SYNPROXY) will provide a great degree of protection against most DDoS attacks. Actually when I wrote that article, a few folks tried to DDoS the netdata demo site to see in real-time the SYNPROXY operation. They did not do it right, but anyway a great deal of requests reached the netdata server. What saved netdata was QoS. The netdata demo server has QoS installed, so the requests were throttled and the server did not even reach the point of resource starvation. Read about it [here](https://github.com/netdata/netdata/wiki/Monitoring-SYNPROXY#a-note-for-ddos-testers).
+   Using QoS together with a [SYNPROXY](../proc.plugin/README.md#linux-anti-ddos) will provide a great degree of protection against most DDoS attacks. Actually when I wrote that article, a few folks tried to DDoS the netdata demo site to see in real-time the SYNPROXY operation. They did not do it right, but anyway a great deal of requests reached the netdata server. What saved netdata was QoS. The netdata demo server has QoS installed, so the requests were throttled and the server did not even reach the point of resource starvation. Read about it [here](../proc.plugin/README.md#linux-anti-ddos).
 
 On top of all these, QoS is extremely light. You will configure it once, and this is it. It will not bother you again and it will not use any noticeable CPU resources, especially on application and database servers.
 

doc/Add-more-charts-to-netdata.md

@@ -1,6 +1,6 @@
 # Add more charts to netdata
 
-netdata collects system metrics by itself. It has many [internal plugins](https://github.com/netdata/netdata/tree/master/collectors) for collecting most of the metrics presented by default when it starts, collecting data from `/proc`, `/sys` and other Linux kernel sources.
+netdata collects system metrics by itself. It has many [internal plugins](../collectors) for collecting most of the metrics presented by default when it starts, collecting data from `/proc`, `/sys` and other Linux kernel sources.
 
 To collect non-system metrics, netdata supports a plugin architecture. The following are the currently available external plugins:
 
@@ -101,7 +101,7 @@ This is a map of the all supported configuration options:
 
 #### map of configuration files
 
-plugin | language | plugin<br/>configuration | modules<br/>configuration
+plugin | language | plugin<br/>configuration | modules<br/>configuration |
 ---:|:---:|:---:|:---|
 `apps.plugin`<br/>(external plugin for monitoring the process tree on Linux and FreeBSD)|`C`|`netdata.conf` section `[plugin:apps]`|Custom configuration for the processes to be monitored at `apps_groups.conf`
 `freebsd.plugin`<br/>(internal plugin for monitoring FreeBSD system resources)|`C`|`netdata.conf` section `[plugin:freebsd]`|one section for each module `[plugin:freebsd:MODULE]`. Each module may provide additional sections in the form of `[plugin:freebsd:MODULE:SUBSECTION]`.
@@ -125,305 +125,305 @@ You can add custom plugins following the [External Plugins Guide](../collectors/
 
 ---
 
-# available data collection modules
+## available data collection modules
 
 These are all the data collection plugins currently available.
 
-## Web Servers
+### Web Servers
 
 application|language|notes|
 :---------:|:------:|:----|
-apache|python<br/>v2 or v3|Connects to multiple apache servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [apache.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/apache)<br/>configuration file: [python.d/apache.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/apache)|
-apache|BASH<br/>Shell Script|Connects to an apache server (local or remote) to collect real-time performance metrics.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [apache.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/apache)<br/>configuration file: [charts.d/apache.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/apache)|
-ipfs|python<br/>v2 or v3|Connects to multiple ipfs servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [ipfs.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/ipfs)<br/>configuration file: [python.d/ipfs.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/ipfs)|
-litespeed|python<br/>v2 or v3|reads the litespeed `rtreport` files to collect metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [litespeed.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/litespeed)<br/>configuration file: [python.d/litespeed.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/litespeed)
-nginx|python<br/>v2 or v3|Connects to multiple nginx servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [nginx.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/nginx)<br/>configuration file: [python.d/nginx.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/nginx)|
-nginx_plus|python<br/>v2 or v3|Connects to multiple nginx_plus servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [nginx_plus.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/nginx_plus)<br/>configuration file: [python.d/nginx_plus.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/nginx_plus)|
-nginx|BASH<br/>Shell Script|Connects to an nginx server (local or remote) to collect real-time performance metrics.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [nginx.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/nginx)<br/>configuration file: [charts.d/nginx.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/nginx)|
-phpfpm|python<br/>v2 or v3|Connects to multiple phpfpm servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [phpfpm.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/phpfpm)<br/>configuration file: [python.d/phpfpm.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/phpfpm)|
-phpfpm|BASH<br/>Shell Script|Connects to one or more phpfpm servers (local or remote) to collect real-time performance metrics.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [phpfpm.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/phpfpm)<br/>configuration file: [charts.d/phpfpm.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/phpfpm)|
-tomcat|python<br/>v2 or v3|Connects to multiple tomcat servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [tomcat.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/tomcat)<br/>configuration file: [python.d/tomcat.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/tomcat)|
-tomcat|BASH<br/>Shell Script|Connects to a tomcat server (local or remote) to collect real-time performance metrics.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [tomcat.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/tomcat)<br/>configuration file: [charts.d/tomcat.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/tomcat)|
+apache|python<br/>v2 or v3|Connects to multiple apache servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [apache.chart.py](../collectors/python.d.plugin/apache)<br/>configuration file: [python.d/apache.conf](../collectors/python.d.plugin/apache)|
+apache|BASH<br/>Shell Script|Connects to an apache server (local or remote) to collect real-time performance metrics.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [apache.chart.sh](../collectors/charts.d.plugin/apache)<br/>configuration file: [charts.d/apache.conf](../collectors/charts.d.plugin/apache)|
+ipfs|python<br/>v2 or v3|Connects to multiple ipfs servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [ipfs.chart.py](../collectors/python.d.plugin/ipfs)<br/>configuration file: [python.d/ipfs.conf](../collectors/python.d.plugin/ipfs)|
+litespeed|python<br/>v2 or v3|reads the litespeed `rtreport` files to collect metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [litespeed.chart.py](../collectors/python.d.plugin/litespeed)<br/>configuration file: [python.d/litespeed.conf](../collectors/python.d.plugin/litespeed)
+nginx|python<br/>v2 or v3|Connects to multiple nginx servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [nginx.chart.py](../collectors/python.d.plugin/nginx)<br/>configuration file: [python.d/nginx.conf](../collectors/python.d.plugin/nginx)|
+nginx_plus|python<br/>v2 or v3|Connects to multiple nginx_plus servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [nginx_plus.chart.py](../collectors/python.d.plugin/nginx_plus)<br/>configuration file: [python.d/nginx_plus.conf](../collectors/python.d.plugin/nginx_plus)|
+nginx|BASH<br/>Shell Script|Connects to an nginx server (local or remote) to collect real-time performance metrics.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [nginx.chart.sh](../collectors/charts.d.plugin/nginx)<br/>configuration file: [charts.d/nginx.conf](../collectors/charts.d.plugin/nginx)|
+phpfpm|python<br/>v2 or v3|Connects to multiple phpfpm servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [phpfpm.chart.py](../collectors/python.d.plugin/phpfpm)<br/>configuration file: [python.d/phpfpm.conf](../collectors/python.d.plugin/phpfpm)|
+phpfpm|BASH<br/>Shell Script|Connects to one or more phpfpm servers (local or remote) to collect real-time performance metrics.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [phpfpm.chart.sh](../collectors/charts.d.plugin/phpfpm)<br/>configuration file: [charts.d/phpfpm.conf](../collectors/charts.d.plugin/phpfpm)|
+tomcat|python<br/>v2 or v3|Connects to multiple tomcat servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [tomcat.chart.py](../collectors/python.d.plugin/tomcat)<br/>configuration file: [python.d/tomcat.conf](../collectors/python.d.plugin/tomcat)|
+tomcat|BASH<br/>Shell Script|Connects to a tomcat server (local or remote) to collect real-time performance metrics.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [tomcat.chart.sh](../collectors/charts.d.plugin/tomcat)<br/>configuration file: [charts.d/tomcat.conf](../collectors/charts.d.plugin/tomcat)|
 
 
 ---
 
-## Web Log Parsers
+### Web Log Parsers
 
 application|language|notes|
 :---------:|:------:|:----|
-web_log|python<br/>v2 or v3|powerful plugin, capable of incrementally parsing any number of web server log files  <br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [web_log.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/web_log)<br/>configuration file: [python.d/web_log.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/web_log)|
+web_log|python<br/>v2 or v3|powerful plugin, capable of incrementally parsing any number of web server log files  <br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [web_log.chart.py](../collectors/python.d.plugin/web_log)<br/>configuration file: [python.d/web_log.conf](../collectors/python.d.plugin/web_log)|
 
 
 ---
 
-## Database Servers
+### Database Servers
 
 application|language|notes|
 :---------:|:------:|:----|
-couchdb|python<br/>v2 or v3|Connects to multiple couchdb servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [couchdb.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/couchdb)<br/>configuration file: [python.d/couchdb.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/couchdb)|
-memcached|python<br/>v2 or v3|Connects to multiple memcached servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [memcached.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/memcached)<br/>configuration file: [python.d/memcached.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/memcached)|
-mongodb|python<br/>v2 or v3|Connects to multiple `mongodb` servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>Requires package `python-pymongo`.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [mongodb.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/mongodb)<br/>configuration file: [python.d/mongodb.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/mongodb)|
-mysql<br/>mariadb|python<br/>v2 or v3|Connects to multiple mysql or mariadb servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>Requires package `python-mysqldb` (faster and preferred), or `python-pymysql`. <br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [mysql.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/mysql)<br/>configuration file: [python.d/mysql.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/mysql)|
-mysql<br/>mariadb|BASH<br/>Shell Script|Connects to multiple mysql or mariadb servers (local or remote) to collect real-time performance metrics.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [mysql.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/mysql)<br/>configuration file: [charts.d/mysql.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/mysql)|
-postgres|python<br/>v2 or v3|Connects to multiple postgres servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>Requires package `python-psycopg2`.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [postgres.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/postgres)<br/>configuration file: [python.d/postgres.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/postgres)|
-redis|python<br/>v2 or v3|Connects to multiple redis servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [redis.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/redis)<br/>configuration file: [python.d/redis.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/redis)|
-rethinkdb|python<br/>v2 or v3|Connects to multiple rethinkdb servers (local or remote) to collect real-time metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [rethinkdb.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/rethinkdbs)<br/>configuration file: [python.d/rethinkdb.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/rethinkdbs)|
+couchdb|python<br/>v2 or v3|Connects to multiple couchdb servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [couchdb.chart.py](../collectors/python.d.plugin/couchdb)<br/>configuration file: [python.d/couchdb.conf](../collectors/python.d.plugin/couchdb)|
+memcached|python<br/>v2 or v3|Connects to multiple memcached servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [memcached.chart.py](../collectors/python.d.plugin/memcached)<br/>configuration file: [python.d/memcached.conf](../collectors/python.d.plugin/memcached)|
+mongodb|python<br/>v2 or v3|Connects to multiple `mongodb` servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>Requires package `python-pymongo`.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [mongodb.chart.py](../collectors/python.d.plugin/mongodb)<br/>configuration file: [python.d/mongodb.conf](../collectors/python.d.plugin/mongodb)|
+mysql<br/>mariadb|python<br/>v2 or v3|Connects to multiple mysql or mariadb servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>Requires package `python-mysqldb` (faster and preferred), or `python-pymysql`. <br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [mysql.chart.py](../collectors/python.d.plugin/mysql)<br/>configuration file: [python.d/mysql.conf](../collectors/python.d.plugin/mysql)|
+mysql<br/>mariadb|BASH<br/>Shell Script|Connects to multiple mysql or mariadb servers (local or remote) to collect real-time performance metrics.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [mysql.chart.sh](../collectors/charts.d.plugin/mysql)<br/>configuration file: [charts.d/mysql.conf](../collectors/charts.d.plugin/mysql)|
+postgres|python<br/>v2 or v3|Connects to multiple postgres servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>Requires package `python-psycopg2`.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [postgres.chart.py](../collectors/python.d.plugin/postgres)<br/>configuration file: [python.d/postgres.conf](../collectors/python.d.plugin/postgres)|
+redis|python<br/>v2 or v3|Connects to multiple redis servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [redis.chart.py](../collectors/python.d.plugin/redis)<br/>configuration file: [python.d/redis.conf](../collectors/python.d.plugin/redis)|
+rethinkdb|python<br/>v2 or v3|Connects to multiple rethinkdb servers (local or remote) to collect real-time metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [rethinkdb.chart.py](../collectors/python.d.plugin/rethinkdbs)<br/>configuration file: [python.d/rethinkdb.conf](../collectors/python.d.plugin/rethinkdbs)|
 
 
 ---
 
-## Social Sharing Servers
+### Social Sharing Servers
 
 application|language|notes|
 :---------:|:------:|:----|
-retroshare|python<br/>v2 or v3|Connects to multiple retroshare servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [retroshare.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/retroshare)<br/>configuration file: [python.d/retroshare.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/retroshare)|
+retroshare|python<br/>v2 or v3|Connects to multiple retroshare servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [retroshare.chart.py](../collectors/python.d.plugin/retroshare)<br/>configuration file: [python.d/retroshare.conf](../collectors/python.d.plugin/retroshare)|
 
 
 ---
 
-## Proxy Servers
+### Proxy Servers
 
 application|language|notes|
 :---------:|:------:|:----|
-squid|python<br/>v2 or v3|Connects to multiple squid servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [squid.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/squid)<br/>configuration file: [python.d/squid.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/squid)|
-squid|BASH<br/>Shell Script|Connects to a squid server (local or remote) to collect real-time performance metrics.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [squid.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/squid)<br/>configuration file: [charts.d/squid.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/squid)|
+squid|python<br/>v2 or v3|Connects to multiple squid servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [squid.chart.py](../collectors/python.d.plugin/squid)<br/>configuration file: [python.d/squid.conf](../collectors/python.d.plugin/squid)|
+squid|BASH<br/>Shell Script|Connects to a squid server (local or remote) to collect real-time performance metrics.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [squid.chart.sh](../collectors/charts.d.plugin/squid)<br/>configuration file: [charts.d/squid.conf](../collectors/charts.d.plugin/squid)|
 
 
 ---
 
-## HTTP Accelerators
+### HTTP Accelerators
 
 application|language|notes|
 :---------:|:------:|:----|
-varnish|python<br/>v2 or v3|Uses the varnishstat command to provide varnish cache statistics (client metrics, cache perfomance, thread-related metrics, backend health, memory usage etc.).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [varnish.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/varnish)<br/>configuration file: [python.d/varnish.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/varnish)|
+varnish|python<br/>v2 or v3|Uses the varnishstat command to provide varnish cache statistics (client metrics, cache perfomance, thread-related metrics, backend health, memory usage etc.).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [varnish.chart.py](../collectors/python.d.plugin/varnish)<br/>configuration file: [python.d/varnish.conf](../collectors/python.d.plugin/varnish)|
 
 
 ---
 
-## Search Engines
+### Search Engines
 
 application|language|notes|
 :---------:|:------:|:----|
-elasticsearch|python<br/>v2 or v3|Monitor elasticsearch performance and health metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [elasticsearch.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/elasticsearch)<br/>configuration file: [python.d/elasticsearch.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/elasticsearch)|
+elasticsearch|python<br/>v2 or v3|Monitor elasticsearch performance and health metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [elasticsearch.chart.py](../collectors/python.d.plugin/elasticsearch)<br/>configuration file: [python.d/elasticsearch.conf](../collectors/python.d.plugin/elasticsearch)|
 
 
 ---
 
-## Name Servers
+### Name Servers
 
 application|language|notes|
 :---------:|:------:|:----|
-named|node.js|Connects to multiple named (ISC-Bind) servers (local or remote) to collect real-time performance metrics. All versions of bind after 9.9.10 are supported.<br/>&nbsp;<br/>netdata plugin: [node.d.plugin](../collectors/node.d.plugin#nodedplugin)<br/>plugin module: [named.node.js](https://github.com/netdata/netdata/tree/master/collectors/node.d.plugin/named)<br/>configuration file: [node.d/named.conf](https://github.com/netdata/netdata/tree/master/collectors/node.d.plugin/named)|
-bind_rndc|python<br/>v2 or v3|Parses named.stats dump file to collect real-time performance metrics. All versions of bind after 9.6 are supported.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [bind_rndc.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/bind_rndc)<br/>configuration file: [python.d/bind_rndc.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/bind_rndc)|
-nsd|python<br/>v2 or v3|Charts the nsd received queries and zones.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [nsd.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/nsd)<br/>configuration file: [python.d/nsd.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/nsd)
-powerdns|python<br/>v2 or v3|Monitors powerdns performance and health metrics <br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [powerdns.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/powerdns)<br/>configuration file: [python.d/powerdns.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/powerdns)|
-dnsdist|python<br/>v2 or v3|Monitors dnsdist performance and health metrics <br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [dnsdist.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/dnsdist)<br/>configuration file: [python.d/dnsdist.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/dnsdist)|
-unbound|python<br/>v2 or v3|Monitors Unbound performance and resource usage metrics <br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [unbound.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/unbound)<br/>configuration file: [python.d/unbound.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/unbound)|
+named|node.js|Connects to multiple named (ISC-Bind) servers (local or remote) to collect real-time performance metrics. All versions of bind after 9.9.10 are supported.<br/>&nbsp;<br/>netdata plugin: [node.d.plugin](../collectors/node.d.plugin#nodedplugin)<br/>plugin module: [named.node.js](../collectors/node.d.plugin/named)<br/>configuration file: [node.d/named.conf](../collectors/node.d.plugin/named)|
+bind_rndc|python<br/>v2 or v3|Parses named.stats dump file to collect real-time performance metrics. All versions of bind after 9.6 are supported.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [bind_rndc.chart.py](../collectors/python.d.plugin/bind_rndc)<br/>configuration file: [python.d/bind_rndc.conf](../collectors/python.d.plugin/bind_rndc)|
+nsd|python<br/>v2 or v3|Charts the nsd received queries and zones.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [nsd.chart.py](../collectors/python.d.plugin/nsd)<br/>configuration file: [python.d/nsd.conf](../collectors/python.d.plugin/nsd)
+powerdns|python<br/>v2 or v3|Monitors powerdns performance and health metrics <br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [powerdns.chart.py](../collectors/python.d.plugin/powerdns)<br/>configuration file: [python.d/powerdns.conf](../collectors/python.d.plugin/powerdns)|
+dnsdist|python<br/>v2 or v3|Monitors dnsdist performance and health metrics <br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [dnsdist.chart.py](../collectors/python.d.plugin/dnsdist)<br/>configuration file: [python.d/dnsdist.conf](../collectors/python.d.plugin/dnsdist)|
+unbound|python<br/>v2 or v3|Monitors Unbound performance and resource usage metrics <br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [unbound.chart.py](../collectors/python.d.plugin/unbound)<br/>configuration file: [python.d/unbound.conf](../collectors/python.d.plugin/unbound)|
 
 
 ---
 
-## DHCP Servers
+### DHCP Servers
 
 application|language|notes|
 :---------:|:------:|:----|
-isc dhcp|python<br/>v2 or v3|Monitor lease database to show all active leases.<br/>&nbsp;<br/>Python v2 requires package `python-ipaddress`.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [isc-dhcpd.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/isc_dhcpd)<br/>configuration file: [python.d/isc-dhcpd.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/isc_dhcpd)|
+isc dhcp|python<br/>v2 or v3|Monitor lease database to show all active leases.<br/>&nbsp;<br/>Python v2 requires package `python-ipaddress`.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [isc-dhcpd.chart.py](../collectors/python.d.plugin/isc_dhcpd)<br/>configuration file: [python.d/isc-dhcpd.conf](../collectors/python.d.plugin/isc_dhcpd)|
 
 
 ---
 
-## Load Balancers
+### Load Balancers
 
 application|language|notes|
 :---------:|:------:|:----|
-haproxy|python<br/>v2 or v3|Monitor frontend, backend and health metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [haproxy.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/haproxy)<br/>configuration file: [python.d/haproxy.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/haproxy)|
-traefik|python<br/>v2 or v3|Connects to multiple traefik instances (local or remote) to collect API metrics (response status code, response time, average response time and server uptime).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [traefik.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/traefik)<br/>configuration file: [python.d/traefik.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/traefik)|
+haproxy|python<br/>v2 or v3|Monitor frontend, backend and health metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [haproxy.chart.py](../collectors/python.d.plugin/haproxy)<br/>configuration file: [python.d/haproxy.conf](../collectors/python.d.plugin/haproxy)|
+traefik|python<br/>v2 or v3|Connects to multiple traefik instances (local or remote) to collect API metrics (response status code, response time, average response time and server uptime).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [traefik.chart.py](../collectors/python.d.plugin/traefik)<br/>configuration file: [python.d/traefik.conf](../collectors/python.d.plugin/traefik)|
 
 ---
 
-## Message Brokers
+### Message Brokers
 
 application|language|notes|
 :---------:|:------:|:----|
-rabbitmq|python<br/>v2 or v3|Monitor rabbitmq performance and health metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [rabbitmq.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/rabbitmq)<br/>configuration file: [python.d/rabbitmq.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/rabbitmq)|
-beanstalkd|python<br/>v2 or v3|Provides server and tube level statistics.<br/>&nbsp;<br/>Requires beanstalkc python package (`pip install beanstalkc` or install package `python-beanstalkc`, which also installs `python-yaml`).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [beanstalk.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/beanstalk)<br/>configuration file: [python.d/beanstalk.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/beanstalk)|
+rabbitmq|python<br/>v2 or v3|Monitor rabbitmq performance and health metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [rabbitmq.chart.py](../collectors/python.d.plugin/rabbitmq)<br/>configuration file: [python.d/rabbitmq.conf](../collectors/python.d.plugin/rabbitmq)|
+beanstalkd|python<br/>v2 or v3|Provides server and tube level statistics.<br/>&nbsp;<br/>Requires beanstalkc python package (`pip install beanstalkc` or install package `python-beanstalkc`, which also installs `python-yaml`).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [beanstalk.chart.py](../collectors/python.d.plugin/beanstalk)<br/>configuration file: [python.d/beanstalk.conf](../collectors/python.d.plugin/beanstalk)|
 
 
 ---
 
-## UPS
+### UPS
 
 application|language|notes|
 :---------:|:------:|:----|
-apcupsd|BASH<br/>Shell Script|Connects to an apcupsd server to collect real-time statistics of an APC UPS.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [apcupsd.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/apcupsd)<br/>configuration file: [charts.d/apcupsd.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/apcupsd)|
-nut|BASH<br/>Shell Script|Connects to a nut server (upsd) to collect real-time UPS statistics.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [nut.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/nut)<br/>configuration file: [charts.d/nut.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/nut)|
+apcupsd|BASH<br/>Shell Script|Connects to an apcupsd server to collect real-time statistics of an APC UPS.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [apcupsd.chart.sh](../collectors/charts.d.plugin/apcupsd)<br/>configuration file: [charts.d/apcupsd.conf](../collectors/charts.d.plugin/apcupsd)|
+nut|BASH<br/>Shell Script|Connects to a nut server (upsd) to collect real-time UPS statistics.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [nut.chart.sh](../collectors/charts.d.plugin/nut)<br/>configuration file: [charts.d/nut.conf](../collectors/charts.d.plugin/nut)|
 
 
 ---
 
-## RAID
+### RAID
 
 application|language|notes|
 :---------:|:------:|:----|
-mdstat|python<br/>v2 or v3|Parses `/proc/mdstat` to get mds health metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [mdstat.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/mdstat)<br/>configuration file: [python.d/mdstat.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/mdstat)|
-megacli|python<br/>v2 or v3|Collects adapter, physical drives and battery stats..<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [megacli.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/megacli)<br/>configuration file: [python.d/megacli.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/megacli)|
+mdstat|python<br/>v2 or v3|Parses `/proc/mdstat` to get mds health metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [mdstat.chart.py](../collectors/python.d.plugin/mdstat)<br/>configuration file: [python.d/mdstat.conf](../collectors/python.d.plugin/mdstat)|
+megacli|python<br/>v2 or v3|Collects adapter, physical drives and battery stats..<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [megacli.chart.py](../collectors/python.d.plugin/megacli)<br/>configuration file: [python.d/megacli.conf](../collectors/python.d.plugin/megacli)|
 
 ---
 
-## Mail Servers
+### Mail Servers
 
 application|language|notes|
 :---------:|:------:|:----|
-dovecot|python<br/>v2 or v3|Connects to multiple dovecot servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [dovecot.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/dovecot)<br/>configuration file: [python.d/dovecot.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/dovecot)|
-exim|python<br/>v2 or v3|Charts the exim queue size.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [exim.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/exim)<br/>configuration file: [python.d/exim.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/exim)|
-exim|BASH<br/>Shell Script|Charts the exim queue size.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [exim.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/exim)<br/>configuration file: [charts.d/exim.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/exim)|
-postfix|python<br/>v2 or v3|Charts the postfix queue size (supports multiple queues).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [postfix.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/postfix)<br/>configuration file: [python.d/postfix.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/postfix)|
-postfix|BASH<br/>Shell Script|Charts the postfix queue size.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [postfix.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/postfix)<br/>configuration file: [charts.d/postfix.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/postfix)|
+dovecot|python<br/>v2 or v3|Connects to multiple dovecot servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [dovecot.chart.py](../collectors/python.d.plugin/dovecot)<br/>configuration file: [python.d/dovecot.conf](../collectors/python.d.plugin/dovecot)|
+exim|python<br/>v2 or v3|Charts the exim queue size.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [exim.chart.py](../collectors/python.d.plugin/exim)<br/>configuration file: [python.d/exim.conf](../collectors/python.d.plugin/exim)|
+exim|BASH<br/>Shell Script|Charts the exim queue size.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [exim.chart.sh](../collectors/charts.d.plugin/exim)<br/>configuration file: [charts.d/exim.conf](../collectors/charts.d.plugin/exim)|
+postfix|python<br/>v2 or v3|Charts the postfix queue size (supports multiple queues).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [postfix.chart.py](../collectors/python.d.plugin/postfix)<br/>configuration file: [python.d/postfix.conf](../collectors/python.d.plugin/postfix)|
+postfix|BASH<br/>Shell Script|Charts the postfix queue size.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [postfix.chart.sh](../collectors/charts.d.plugin/postfix)<br/>configuration file: [charts.d/postfix.conf](../collectors/charts.d.plugin/postfix)|
 
 
 ---
 
-## File Servers
+### File Servers
 
 application|language|notes|
 :---------:|:------:|:----|
 NFS Client|`C`|This is handled entirely by the netdata daemon.<br/>&nbsp;<br/>Configuration: `netdata.conf`, section `[plugin:proc:/proc/net/rpc/nfs]`.
 NFS Server|`C`|This is handled entirely by the netdata daemon.<br/>&nbsp;<br/>Configuration: `netdata.conf`, section `[plugin:proc:/proc/net/rpc/nfsd]`.
-samba|python<br/>v2 or v3|Performance metrics of Samba SMB2 file sharing.<br/>&nbsp;<br/>documentation page: [python.d.plugin module samba](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/samba)<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [samba.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/samba)<br/>configuration file: [python.d/samba.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/samba)|
+samba|python<br/>v2 or v3|Performance metrics of Samba SMB2 file sharing.<br/>&nbsp;<br/>documentation page: [python.d.plugin module samba](../collectors/python.d.plugin/samba)<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [samba.chart.py](../collectors/python.d.plugin/samba)<br/>configuration file: [python.d/samba.conf](../collectors/python.d.plugin/samba)|
 
 
 ---
 
-## System
+### System
 
 application|language|notes|
 :---------:|:------:|:----|
-apps|C|`apps.plugin` collects resource usage statistics for all processes running in the system. It groups the entire process tree and reports dozens of metrics for CPU utilization, memory footprint, disk I/O, swap memory, network connections, open files and sockets, etc. It reports metrics for application groups, users and user groups.<br/>&nbsp;<br/>[Documentation of `apps.plugin`](../collectors/apps.plugin/).<br/>&nbsp;<br/>netdata plugin: [`apps_plugin.c`](https://github.com/netdata/netdata/tree/master/collectors/apps.plugin)<br/>configuration file: [`apps_groups.conf`](https://github.com/netdata/netdata/tree/master/collectors/apps.plugin)|
-cpu_apps|BASH<br/>Shell Script|Collects the CPU utilization of select apps.<br/><br/>DEPRECATED IN FAVOR OF `apps.plugin`. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [cpu_apps.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/cpu_apps)<br/>configuration file: [charts.d/cpu_apps.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/cpu_apps)|
-load_average|BASH<br/>Shell Script|Collects the current system load average.<br/><br/>DEPRECATED IN FAVOR OF THE NETDATA INTERNAL ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [load_average.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/load_average)<br/>configuration file: [charts.d/load_average.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/load_average)|
-mem_apps|BASH<br/>Shell Script|Collects the memory footprint of select applications.<br/><br/>DEPRECATED IN FAVOR OF `apps.plugin`. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [mem_apps.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/mem_apps)<br/>configuration file: [charts.d/mem_apps.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/mem_apps)|
+apps|C|`apps.plugin` collects resource usage statistics for all processes running in the system. It groups the entire process tree and reports dozens of metrics for CPU utilization, memory footprint, disk I/O, swap memory, network connections, open files and sockets, etc. It reports metrics for application groups, users and user groups.<br/>&nbsp;<br/>[Documentation of `apps.plugin`](../collectors/apps.plugin/).<br/>&nbsp;<br/>netdata plugin: [`apps_plugin.c`](../collectors/apps.plugin)<br/>configuration file: [`apps_groups.conf`](../collectors/apps.plugin)|
+cpu_apps|BASH<br/>Shell Script|Collects the CPU utilization of select apps.<br/><br/>DEPRECATED IN FAVOR OF `apps.plugin`. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [cpu_apps.chart.sh](../collectors/charts.d.plugin/cpu_apps)<br/>configuration file: [charts.d/cpu_apps.conf](../collectors/charts.d.plugin/cpu_apps)|
+load_average|BASH<br/>Shell Script|Collects the current system load average.<br/><br/>DEPRECATED IN FAVOR OF THE NETDATA INTERNAL ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [load_average.chart.sh](../collectors/charts.d.plugin/load_average)<br/>configuration file: [charts.d/load_average.conf](../collectors/charts.d.plugin/load_average)|
+mem_apps|BASH<br/>Shell Script|Collects the memory footprint of select applications.<br/><br/>DEPRECATED IN FAVOR OF `apps.plugin`. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [mem_apps.chart.sh](../collectors/charts.d.plugin/mem_apps)<br/>configuration file: [charts.d/mem_apps.conf](../collectors/charts.d.plugin/mem_apps)|
 
 
 ---
 
-## Sensors
+### Sensors
 
 application|language|notes|
 :---------:|:------:|:----|
-cpufreq|python<br/>v2 or v3|Collects the current CPU frequency from `/sys/devices`.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [cpufreq.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/cpufreq)<br/>configuration file: [python.d/cpufreq.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/cpufreq)|
-cpufreq|BASH<br/>Shell Script|Collects current CPU frequency from `/sys/devices`.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [cpufreq.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/cpufreq)<br/>configuration file: [charts.d/cpufreq.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/cpufreq)|
-IPMI|C|Collects temperatures, voltages, currents, power, fans and `SEL` events from IPMI using `libipmimonitoring`.<br/>Check [Monitoring IPMI](../collectors/freeipmi.plugin/) for more information<br/>&nbsp;<br/>netdata plugin: [freeipmi.plugin](https://github.com/netdata/netdata/tree/master/collectors/freeipmi.plugin)<br/>configuration file: none required - to enable it, compile/install netdata with `--enable-plugin-freeipmi`|
-hddtemp|python<br/>v2 or v3|Connects to multiple hddtemp servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [hddtemp.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/hddtemp)<br/>configuration file: [python.d/hddtemp.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/hddtemp)|
-hddtemp|BASH<br/>Shell Script|Connects to a hddtemp server (local or remote) to collect real-time performance metrics.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [hddtemp.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/hddtemp)<br/>configuration file: [charts.d/hddtemp.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/hddtemp)|
-sensors|BASH<br/>Shell Script|Collects sensors values from files in `/sys`.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [sensors.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/sensors)<br/>configuration file: [charts.d/sensors.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/sensors)|
-sensors|python<br/>v2 or v3|Uses `lm-sensors` to collect sensor data.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [sensors.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/sensors)<br/>configuration file: [python.d/sensors.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/sensors)|
-smartd_log|python<br/>v2 or v3|Collects the S.M.A.R.T attributes from `smartd` log files.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [smartd_log.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/smartd_log)<br/>configuration file: [python.d/smartd_log.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/smartd_log)|
-w1sensor|python<br/>v2 or v3|Collects data from connected 1-Wire sensors.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [w1sensor.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/w1sensor)<br/>configuration file: [python.d/w1sensor.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/w1sensor)|
+cpufreq|python<br/>v2 or v3|Collects the current CPU frequency from `/sys/devices`.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [cpufreq.chart.py](../collectors/python.d.plugin/cpufreq)<br/>configuration file: [python.d/cpufreq.conf](../collectors/python.d.plugin/cpufreq)|
+cpufreq|BASH<br/>Shell Script|Collects current CPU frequency from `/sys/devices`.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [cpufreq.chart.sh](../collectors/charts.d.plugin/cpufreq)<br/>configuration file: [charts.d/cpufreq.conf](../collectors/charts.d.plugin/cpufreq)|
+IPMI|C|Collects temperatures, voltages, currents, power, fans and `SEL` events from IPMI using `libipmimonitoring`.<br/>Check [Monitoring IPMI](../collectors/freeipmi.plugin/) for more information<br/>&nbsp;<br/>netdata plugin: [freeipmi.plugin](../collectors/freeipmi.plugin)<br/>configuration file: none required - to enable it, compile/install netdata with `--enable-plugin-freeipmi`|
+hddtemp|python<br/>v2 or v3|Connects to multiple hddtemp servers (local or remote) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [hddtemp.chart.py](../collectors/python.d.plugin/hddtemp)<br/>configuration file: [python.d/hddtemp.conf](../collectors/python.d.plugin/hddtemp)|
+hddtemp|BASH<br/>Shell Script|Connects to a hddtemp server (local or remote) to collect real-time performance metrics.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [hddtemp.chart.sh](../collectors/charts.d.plugin/hddtemp)<br/>configuration file: [charts.d/hddtemp.conf](../collectors/charts.d.plugin/hddtemp)|
+sensors|BASH<br/>Shell Script|Collects sensors values from files in `/sys`.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [sensors.chart.sh](../collectors/charts.d.plugin/sensors)<br/>configuration file: [charts.d/sensors.conf](../collectors/charts.d.plugin/sensors)|
+sensors|python<br/>v2 or v3|Uses `lm-sensors` to collect sensor data.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [sensors.chart.py](../collectors/python.d.plugin/sensors)<br/>configuration file: [python.d/sensors.conf](../collectors/python.d.plugin/sensors)|
+smartd_log|python<br/>v2 or v3|Collects the S.M.A.R.T attributes from `smartd` log files.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [smartd_log.chart.py](../collectors/python.d.plugin/smartd_log)<br/>configuration file: [python.d/smartd_log.conf](../collectors/python.d.plugin/smartd_log)|
+w1sensor|python<br/>v2 or v3|Collects data from connected 1-Wire sensors.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [w1sensor.chart.py](../collectors/python.d.plugin/w1sensor)<br/>configuration file: [python.d/w1sensor.conf](../collectors/python.d.plugin/w1sensor)|
 
 
 ---
 
-## Network
+### Network
 
 application|language|notes|
 :---------:|:------:|:----|
-ap|BASH<br/>Shell Script|Uses the `iw` command to provide statistics of wireless clients connected to a wireless access point running on this host (works well with `hostapd`).<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [ap.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/ap)<br/>configuration file: [charts.d/ap.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/ap)|
-fping|C|Charts network latency statistics for any number of nodes, using the `fping` command. A recent (probably unreleased) version of fping is required. The plugin supplied can install it in `/usr/local`.<br/>&nbsp;<br/>netdata plugin: [fping.plugin](https://github.com/netdata/netdata/tree/master/collectors/fping.plugin) (this is a shell wrapper to start fping - once fping is started, netdata and fping communicate directly - it can also install the right version of fping)<br/>configuration file: [fping.conf](https://github.com/netdata/netdata/tree/master/collectors/fping.plugin)|
-snmp|node.js|Connects to multiple snmp servers to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [node.d.plugin](../collectors/node.d.plugin#nodedplugin)<br/>plugin module: [snmp.node.js](https://github.com/netdata/netdata/tree/master/collectors/node.d.plugin/snmp)<br/>configuration file: [node.d/snmp.conf](https://github.com/netdata/netdata/tree/master/collectors/node.d.plugin/snmp)|
-dns_query_time|python<br/>v2 or v3|Provides DNS query time statistics.<br/>&nbsp;<br/>Requires package `dnspython` (`pip install dnspython` or install package `python-dnspython`).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [dns_query_time.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/dns_query_time)<br/>configuration file: [python.d/dns_query_time.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/dns_query_time)|
+ap|BASH<br/>Shell Script|Uses the `iw` command to provide statistics of wireless clients connected to a wireless access point running on this host (works well with `hostapd`).<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [ap.chart.sh](../collectors/charts.d.plugin/ap)<br/>configuration file: [charts.d/ap.conf](../collectors/charts.d.plugin/ap)|
+fping|C|Charts network latency statistics for any number of nodes, using the `fping` command. A recent (probably unreleased) version of fping is required. The plugin supplied can install it in `/usr/local`.<br/>&nbsp;<br/>netdata plugin: [fping.plugin](../collectors/fping.plugin) (this is a shell wrapper to start fping - once fping is started, netdata and fping communicate directly - it can also install the right version of fping)<br/>configuration file: [fping.conf](../collectors/fping.plugin)|
+snmp|node.js|Connects to multiple snmp servers to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [node.d.plugin](../collectors/node.d.plugin#nodedplugin)<br/>plugin module: [snmp.node.js](../collectors/node.d.plugin/snmp)<br/>configuration file: [node.d/snmp.conf](../collectors/node.d.plugin/snmp)|
+dns_query_time|python<br/>v2 or v3|Provides DNS query time statistics.<br/>&nbsp;<br/>Requires package `dnspython` (`pip install dnspython` or install package `python-dnspython`).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [dns_query_time.chart.py](../collectors/python.d.plugin/dns_query_time)<br/>configuration file: [python.d/dns_query_time.conf](../collectors/python.d.plugin/dns_query_time)|
 http|python<br />v2 or v3|Monitors a generic web page for status code and returned content in HTML
 port|ptyhon<br />v2 or v3|Checks if a generic TCP port for its availability and response time
 
 
 ---
 
-## Time Servers
+### Time Servers
 
 application|language|notes|
 :---------:|:------:|:----|
-chrony|python<br/>v2 or v3|Uses the chronyc command to provide chrony statistics (Frequency, Last offset, RMS offset, Residual freq, Root delay, Root dispersion, Skew, System time).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [chrony.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/chrony)<br/>configuration file: [python.d/chrony.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/chrony)|
-ntpd|python<br/>v2 or v3|Connects to multiple ntpd servers (local or remote) to provide statistics of system variables and optional also peer variables (if enabled in the configuration).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [ntpd.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/ntpd)<br/>configuration file: [python.d/ntpd.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/ntpd)|
+chrony|python<br/>v2 or v3|Uses the chronyc command to provide chrony statistics (Frequency, Last offset, RMS offset, Residual freq, Root delay, Root dispersion, Skew, System time).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [chrony.chart.py](../collectors/python.d.plugin/chrony)<br/>configuration file: [python.d/chrony.conf](../collectors/python.d.plugin/chrony)|
+ntpd|python<br/>v2 or v3|Connects to multiple ntpd servers (local or remote) to provide statistics of system variables and optional also peer variables (if enabled in the configuration).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [ntpd.chart.py](../collectors/python.d.plugin/ntpd)<br/>configuration file: [python.d/ntpd.conf](../collectors/python.d.plugin/ntpd)|
 
 
 ---
 
-## Security
+### Security
 
 application|language|notes|
 :---------:|:------:|:----|
-freeradius|python<br/>v2 or v3|Uses the radclient command to provide freeradius statistics (authentication, accounting, proxy-authentication, proxy-accounting).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [freeradius.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/freeradius)<br/>configuration file: [python.d/freeradius.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/freeradius)|
-openvpn|python<br/>v2 or v3|All data from openvpn-status.log in your dashboard! <br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [ovpn_status_log.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/ovpn_status_log)<br/>configuration file: [python.d/ovpn_status_log.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/ovpn_status_log)|
-fail2ban|python<br/>v2 or v3|Monitor fail2ban log file to show all bans for all active jails <br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [fail2ban.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/fail2ban)<br/>configuration file: [python.d/fail2ban.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/fail2ban)|
+freeradius|python<br/>v2 or v3|Uses the radclient command to provide freeradius statistics (authentication, accounting, proxy-authentication, proxy-accounting).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [freeradius.chart.py](../collectors/python.d.plugin/freeradius)<br/>configuration file: [python.d/freeradius.conf](../collectors/python.d.plugin/freeradius)|
+openvpn|python<br/>v2 or v3|All data from openvpn-status.log in your dashboard! <br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [ovpn_status_log.chart.py](../collectors/python.d.plugin/ovpn_status_log)<br/>configuration file: [python.d/ovpn_status_log.conf](../collectors/python.d.plugin/ovpn_status_log)|
+fail2ban|python<br/>v2 or v3|Monitor fail2ban log file to show all bans for all active jails <br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [fail2ban.chart.py](../collectors/python.d.plugin/fail2ban)<br/>configuration file: [python.d/fail2ban.conf](../collectors/python.d.plugin/fail2ban)|
 
 
 ---
 
-## Telephony Servers
+### Telephony Servers
 
 application|language|notes|
 :---------:|:------:|:----|
-opensips|BASH<br/>Shell Script|Connects to an opensips server (local only) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [opensips.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/opensips)<br/>configuration file: [charts.d/opensips.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/opensips)|
+opensips|BASH<br/>Shell Script|Connects to an opensips server (local only) to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [opensips.chart.sh](../collectors/charts.d.plugin/opensips)<br/>configuration file: [charts.d/opensips.conf](../collectors/charts.d.plugin/opensips)|
 
 
 ---
 
-## Go applications
+### Go applications
 
 application|language|notes|
 :---------:|:------:|:----|
-go_expvar|python<br/>v2 or v3|Parses metrics exposed by applications written in the Go programming language using the [expvar package](https://golang.org/pkg/expvar/).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [go_expvar.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/go_expvar)<br/>configuration file: [python.d/go_expvar.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/go_expvar)<br/>documentation: [Monitoring Go Applications](../collectors/python.d.plugin/go_expvar/)|
+go_expvar|python<br/>v2 or v3|Parses metrics exposed by applications written in the Go programming language using the [expvar package](https://golang.org/pkg/expvar/).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [go_expvar.chart.py](../collectors/python.d.plugin/go_expvar)<br/>configuration file: [python.d/go_expvar.conf](../collectors/python.d.plugin/go_expvar)<br/>documentation: [Monitoring Go Applications](../collectors/python.d.plugin/go_expvar/)|
 
 
 ---
 
-## Household Appliances
+### Household Appliances
 
 application|language|notes|
 :---------:|:------:|:----|
-sma_webbox|node.js|Connects to multiple remote SMA webboxes to collect real-time performance metrics of the photovoltaic (solar) power generation.<br/>&nbsp;<br/>netdata plugin: [node.d.plugin](../collectors/node.d.plugin#nodedplugin)<br/>plugin module: [sma_webbox.node.js](https://github.com/netdata/netdata/tree/master/collectors/node.d.plugin/sma_webbox)<br/>configuration file: [node.d/sma_webbox.conf](https://github.com/netdata/netdata/tree/master/collectors/node.d.plugin/sma_webbox)|
-fronius|node.js|Connects to multiple remote Fronius Symo servers to collect real-time performance metrics of the photovoltaic (solar) power generation.<br/>&nbsp;<br/>netdata plugin: [node.d.plugin](../collectors/node.d.plugin#nodedplugin)<br/>plugin module: [fronius.node.js](https://github.com/netdata/netdata/tree/master/collectors/node.d.plugin/fronius)<br/>configuration file: [node.d/fronius.conf](https://github.com/netdata/netdata/tree/master/collectors/node.d.plugin/fronius)|
-stiebeleltron|node.js|Collects the temperatures and other metrics from your Stiebel Eltron heating system using their Internet Service Gateway (ISG web).<br/>&nbsp;<br/>netdata plugin: [node.d.plugin](../collectors/node.d.plugin#nodedplugin)<br/>plugin module: [stiebeleltron.node.js](https://github.com/netdata/netdata/tree/master/collectors/node.d.plugin/stiebeleltron)<br/>configuration file: [node.d/stiebeleltron.conf](https://github.com/netdata/netdata/tree/master/collectors/node.d.plugin/stiebeleltron)|
+sma_webbox|node.js|Connects to multiple remote SMA webboxes to collect real-time performance metrics of the photovoltaic (solar) power generation.<br/>&nbsp;<br/>netdata plugin: [node.d.plugin](../collectors/node.d.plugin#nodedplugin)<br/>plugin module: [sma_webbox.node.js](../collectors/node.d.plugin/sma_webbox)<br/>configuration file: [node.d/sma_webbox.conf](../collectors/node.d.plugin/sma_webbox)|
+fronius|node.js|Connects to multiple remote Fronius Symo servers to collect real-time performance metrics of the photovoltaic (solar) power generation.<br/>&nbsp;<br/>netdata plugin: [node.d.plugin](../collectors/node.d.plugin#nodedplugin)<br/>plugin module: [fronius.node.js](../collectors/node.d.plugin/fronius)<br/>configuration file: [node.d/fronius.conf](../collectors/node.d.plugin/fronius)|
+stiebeleltron|node.js|Collects the temperatures and other metrics from your Stiebel Eltron heating system using their Internet Service Gateway (ISG web).<br/>&nbsp;<br/>netdata plugin: [node.d.plugin](../collectors/node.d.plugin#nodedplugin)<br/>plugin module: [stiebeleltron.node.js](../collectors/node.d.plugin/stiebeleltron)<br/>configuration file: [node.d/stiebeleltron.conf](../collectors/node.d.plugin/stiebeleltron)|
 
 
 ---
 
-## Java Processes
+### Java Processes
 
 application|language|notes|
 :---------:|:------:|:----|
-Spring Boot Application|java|Monitors running Java [Spring Boot](https://spring.io/) applications that expose their metrics with the use of the **Spring Boot Actuator** included in Spring Boot library.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [springboot](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/springboot)<br/>configuration file: [python.d/springboot.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/springboot)
+Spring Boot Application|java|Monitors running Java [Spring Boot](https://spring.io/) applications that expose their metrics with the use of the **Spring Boot Actuator** included in Spring Boot library.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [springboot](../collectors/python.d.plugin/springboot)<br/>configuration file: [python.d/springboot.conf](../collectors/python.d.plugin/springboot)
 
 
 ---
 
-## Provisioning Systems
+### Provisioning Systems
 
 application|language|notes|
 :---------:|:------:|:----|
-puppet|python<br/>v2 or v3|Connects to multiple Puppet Server and Puppet DB instances (local or remote) to collect real-time status metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [puppet.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/puppet)<br/>configuration file: [python.d/puppet.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/puppet)|
+puppet|python<br/>v2 or v3|Connects to multiple Puppet Server and Puppet DB instances (local or remote) to collect real-time status metrics.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [puppet.chart.py](../collectors/python.d.plugin/puppet)<br/>configuration file: [python.d/puppet.conf](../collectors/python.d.plugin/puppet)|
 
 ---
 
-## Game Servers
+### Game Servers
 
 application|language|notes|
 :---------:|:------:|:----|
-SpigotMC|Python<br/>v2 or v3|Monitors Spigot Minecraft server ticks per second and number of online players using the Minecraft remote console.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [spigotmc.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/spigotmc)<br/>configuration file: [python.d/spigotmc.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/spigotmc)|
+SpigotMC|Python<br/>v2 or v3|Monitors Spigot Minecraft server ticks per second and number of online players using the Minecraft remote console.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [spigotmc.chart.py](../collectors/python.d.plugin/spigotmc)<br/>configuration file: [python.d/spigotmc.conf](../collectors/python.d.plugin/spigotmc)|
 
 ---
 
-## Distributed Computing Clients
+### Distributed Computing Clients
 
 application|language|notes|
 :---------:|:------:|:----|
-BOINC|Python<br/>v2 or v3|Monitors task states for local and remote BOINC client software using the remote GUI RPC interface.  Also provides alarms for a handful of error conditions.  Requires manual configuration<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [boinc.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/boinc)<br/>configuration file: [python.d/boinc.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/boinc)|
+BOINC|Python<br/>v2 or v3|Monitors task states for local and remote BOINC client software using the remote GUI RPC interface.  Also provides alarms for a handful of error conditions.  Requires manual configuration<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [boinc.chart.py](../collectors/python.d.plugin/boinc)<br/>configuration file: [python.d/boinc.conf](../collectors/python.d.plugin/boinc)|
 
 ---
 
-## Skeleton Plugins
+### Skeleton Plugins
 
 application|language|notes|
 :---------:|:------:|:----|
-example|BASH<br/>Shell Script|Skeleton plugin in BASH.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [example.chart.sh](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/example)<br/>configuration file: [charts.d/example.conf](https://github.com/netdata/netdata/tree/master/collectors/charts.d.plugin/example)|
-example|python<br/>v2 or v3|Skeleton plugin in Python.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin)<br/>plugin module: [example.chart.py](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/example)<br/>configuration file: [python.d/example.conf](https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/example)|
+example|BASH<br/>Shell Script|Skeleton plugin in BASH.<br/><br/>DEPRECATED IN FAVOR OF THE PYTHON ONE. It is still supplied only as an example module to shell scripting plugins.<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [example.chart.sh](../collectors/charts.d.plugin/example)<br/>configuration file: [charts.d/example.conf](../collectors/charts.d.plugin/example)|
+example|python<br/>v2 or v3|Skeleton plugin in Python.<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [example.chart.py](../collectors/python.d.plugin/example)<br/>configuration file: [python.d/example.conf](../collectors/python.d.plugin/example)|

doc/Running-behind-apache.md

@@ -249,7 +249,7 @@ If your apache server is not on localhost, you can set:
 ```
 _note: netdata v1.9+ support `allow connections from`_
 
-`allow connections from` accepts [netdata simple patterns](https://github.com/netdata/netdata/wiki/Configuration#netdata-simple-patterns) to match against the connection IP address.
+`allow connections from` accepts [netdata simple patterns](../libnetdata/simple_pattern/) to match against the connection IP address.
 
 ## prevent the double access.log
 

doc/Running-behind-nginx.md

@@ -179,7 +179,7 @@ If your nginx server is not on localhost, you can set:
 
 _note: netdata v1.9+ support `allow connections from`_
 
-`allow connections from` accepts [netdata simple patterns](https://github.com/netdata/netdata/wiki/Configuration#netdata-simple-patterns) to match against the connection IP address.
+`allow connections from` accepts [netdata simple patterns](../libnetdata/simple_pattern/) to match against the connection IP address.
 
 ## prevent the double access.log
 

doc/netdata-security.md

@@ -8,12 +8,12 @@ We have given special attention to all aspects of netdata, ensuring that everyth
 2. [your systems are safe with netdata](#your-systems-are-safe-with-netdata)
 3. [netdata is read-only](#netdata-is-read-only)
 4. [netdata viewers authentication](#netdata-viewers-authentication)
-	- [why netdata should be protected?](#why-netdata-should-be-protected)
+	- [why netdata should be protected](#why-netdata-should-be-protected)
 	- [protect netdata from the internet](#protect-netdata-from-the-internet)
 		- [expose netdata only in a private LAN](#expose-netdata-only-in-a-private-lan)
 		- [use an authenticating web server in proxy mode](#use-an-authenticating-web-server-in-proxy-mode)
 		- [other methods](#other-methods)
-5. [registry or how to not send any information to a thirdparty server](#registry-or-how-to-not-send-any-information-to-a-thirdparty-server)
+5. [registry or how to not send any information to a third party server](#registry-or-how-to-not-send-any-information-to-a-third-party-server)
 
 ## your data are safe with netdata
 
@@ -45,7 +45,7 @@ netdata dashboards do not expose sensitive information. Business data of any kin
 
 netdata is a monitoring system. It should be protected, the same way you protect all your admin apps. We assume netdata will be installed privately, for your eyes only.
 
-### why netdata should be protected?
+### why netdata should be protected
 
 Viewers will be able to get some information about the system netdata is running. This information is everything the dashboard provides. The dashboard includes a list of the services each system runs (the legends of the charts under the `Systemd Services` section),  the applications running (the legends of the charts under the `Applications` section), the disks of the system and their names, the user accounts of the system that are running processes (the `Users` and `User Groups` section of the dashboard), the network interfaces and their names (not the IPs) and detailed information about the performance of the system and its applications.
 
@@ -89,7 +89,7 @@ In netdata v1.9+ there is also access list support, like this:
 
 #### use an authenticating web server in proxy mode
 
-Use **one nginx** (or one apache) server to provide authentication in front of **all your netdata servers**. So, you will be accessing all your netdata with URLs like `http://nginx.host/netdata/{NETDATA_HOSTNAME}/` and authentication will be shared among all of them (you will sign-in once for all your servers). Check [this wiki page for more information on configuring nginx for such a setup](https://github.com/netdata/netdata/wiki/Running-behind-nginx#as-a-subfolder-for-multiple-netdata-servers-via-one-nginx).
+Use **one nginx** (or one apache) server to provide authentication in front of **all your netdata servers**. So, you will be accessing all your netdata with URLs like `http://nginx.host/netdata/{NETDATA_HOSTNAME}/` and authentication will be shared among all of them (you will sign-in once for all your servers). Check [this wiki page for more information on configuring nginx for such a setup](https://github.com/netdata/netdata/blob/master/doc/Running-behind-nginx.md#netdata-via-nginx).
 
 To use this method, you should firewall protect all your netdata servers, so that only the nginx IP will allowed to directly access netdata. To do this, run this on each of your servers (or use your firewall manager):
 
@@ -151,7 +151,7 @@ Of course, there are many more methods you could use to protect netdata:
 
 ## registry or how to not send any information to a third party server
 
-The default configuration uses a public registry under registry.my-netdata.io (more information about the registry here: [mynetdata-menu-item](https://github.com/netdata/netdata/wiki/mynetdata-menu-item) ). Please be aware that if you use that public registry, you submit at least the following information to a third party server, which might violate your security policies: 
+The default configuration uses a public registry under registry.my-netdata.io (more information about the registry here: [mynetdata-menu-item](https://github.com/netdata/netdata/tree/master/registry) ). Please be aware that if you use that public registry, you submit at least the following information to a third party server, which might violate your security policies: 
 - Your public ip where the browser runs
 - The url where you open the web-ui in the browser (via http request referer)
 - The hostnames of the netdata servers