7.6. Updating Nodes in Virtuozzo Storage Clusters

Important

If nodes in the cluster run different versions (updates) of Virtuozzo Hybrid Server, make sure to create new cluster services on the nodes running the newest version of Virtuozzo Hybrid Server.

When updating Virtuozzo Storage cluster services running on Virtuozzo Hybrid Server nodes, follow these steps:

  1. Make sure that the cluster is fully healthy, using vstorage -c <cluster_name> top.

  2. Update Virtuozzo Storage services on just one cluster node with yum update.

  3. Reboot the updated node.

  4. Again make sure that the cluster is fully healthy, using vstorage -c <cluster_name> top.

Repeat these steps for each cluster node, updating them one at a time. The cluster must be healthy before and after each node is updated.