Uninstall/Reinstall

Reinstall

To easiest way to re-install ClusterControl is:

$ systemctl stop mariadb cmon cmon-ssh cmon-events cmon-cloud
$ dnf remove clustercontrol* mariadb*
$ rm -Rf /var/lib/mysql
$ rm -Rf /var/lib/cmon
$ rm -Rf /etc/s9s.conf
$ rm -Rf /root/.s9s 

$ systemctl stop mariadb cmon cmon-ssh cmon-events cmon-cloud
$ apt purge clustercontrol* mariadb*
$ rm -Rf /var/lib/mysql
$ rm -Rf /var/lib/cmon
$ rm -Rf /etc/s9s.conf
$ rm -Rf /root/.s9s

Then, perform the installation using the installer script:

$ ./install-cc

Uninstall

If ClusterControl is installed on a dedicated host (i.e., not co-located with your application), uninstalling ClusterControl is pretty straightforward. It is enough to bring down the ClusterControl node and revoke the cmon user privileges from the managed database nodes:

mysql> DELETE FROM mysql.user WHERE user = 'cmon';
mysql> FLUSH PRIVILEGES;

Before removing the package, stop all cmon related services:

On systemd:

$ systemctl stop cmon cmon-ssh cmon-events cmon-cloud

On SysVinit:

$ service cmon stop
$ service cmon-ssh stop
$ service cmon-events stop
$ service cmon-cloud stop

If ClusterControl is installed through the Severalnines repository, use the following command to uninstall via the respective package manager:

$ yum remove -y clustercontrol*

$ sudo apt-get remove -y clustercontrol*

For CMON and ClusterControl UI databases and privileges:

mysql> DROP SCHEMA cmon;
mysql> DROP SCHEMA dcps;
mysql> DELETE FROM mysql.user WHERE user = 'cmon';
mysql> FLUSH PRIVILEGES;