8.3. Enabling and Disabling High Availability for Nodes

Usually, you decide whether to enable high availability support for a node when you install Virtuozzo Storage on it.

To enable HA on a prepared node, do the following:

  1. Execute the shaman join command. For example, to join the cluster vstor1, execute: 

    # shaman -c vstor1 join

  2. Configure and start the required services: 

    # systemctl enable snmpd.service
# systemctl start snmpd.service
# systemctl enable shaman.service
# systemctl start shaman.service
# systemctl enable pdrs.service
# systemctl start pdrs.service

To disable HA on a node, do the following:

  1. Configure and stop the services which are no longer required: 

    # systemctl disable shaman.service
# systemctl stop shaman.service
# systemctl disable pdrs.service
# systemctl stop pdrs.service

  2. Execute the shaman leave command. For example, to leave the cluster vstor1, execute: 

    # shaman -c vstor1 leave

After enabling or disabling HA support for a node, you can check the results of your actions with the shaman stat command.

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