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Monitoring MySQL Cluster

In order to monitor MySQL Cluster we recommend a tool called CMON, which is a monitoring tool developed by Severalnines. CMON monitors and manages the MySQL Cluster. When CMON is installed, CMON agents will be running on every [EZ] and a CMON controller will be running in [CZ].

A web interface is available for accessing the information from CMON at http://<[CZ] host name or IP address>/cmon :

CMON Monitoring Dashboard
 

Starting CMON

The procedure described in this section has to be performed on each node in the MySQL Cluster.

To start CMON:

  1. Start a command line tool and log in as root user.
     

  2. Enter the start command:

    $ service cmon start

  3. Repeat the procedure on all the nodes in the MySQL Cluster.

Stopping CMON

The procedure described in this section has to be performed on each node in the MySQL Cluster.

To stop CMON:

  1. Start a command line tool and log in as root user.
     

  2. Enter the stop command:

    $ service cmon stop

  3. Repeat the procedure on all the nodes in the MySQL Cluster.
     

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