MXS-2219 Add documentation for the Clustrix Monitor

Documentation/Documentation-Contents.md

@@ -105,6 +105,7 @@ Module specific documentation.
  - [Galera Monitor](Monitors/Galera-Monitor.md)
  - [ColumnStore Monitor](Monitors/ColumnStore-Monitor.md)
  - [Aurora Monitor](Monitors/Aurora-Monitor.md)
+ - [Clustrix Monitor](Monitors/Clustrix-Monitor.md)
 
 Legacy monitors that have been deprecated.
 

Documentation/Monitors/Clustrix-Monitor.md

@@ -0,0 +1,48 @@
+# Clustrix Monitor
+
+## Overview
+
+The Clustrix Monitor is a monitor that monitors a Clustrix cluster. It is
+capable of detecting the cluster setup and creating corresponding server
+instances within MaxScale.
+
+## Configuration
+
+A minimal configuration for a monitor requires one server in the Clustrix
+cluster, and a username and a password to connect to the server. Note that
+the Clustrix monitor will only use that server in order to dynamically find
+out the configuration of the cluster; after startup it will completely rely
+upon information obtained at runtime.
+
+To ensure that the Clustrix monitor will be able to start, it is adviseable
+to provide _more_ than one server to cater for the case that not all nodes
+are always up when MaxScale starts.
+
+```
+[TheClustrixMonitor]
+type=monitor
+module=clustrixmon
+servers=server1,server2,server3
+user=myuser
+password=mypwd
+
+```
+
+## Common Monitor Parameters
+
+For a list of optional parameters that all monitors support, read the
+[Monitor Common](Monitor-Common.md) document.
+
+## Clustrix Monitor optional parameters
+
+These are optional parameters specific to the Galera Monitor.
+
+### `cluster_monitor_interval`
+
+Defines, in milliseconds, how often the monitor checks the state of the
+entire cluster. The default value is 60000 (1 minute), which should not
+be lowered as that may have an adverse effect on the Cluster itself.
+
+```
+cluster_monitor_interval=120000
+```