7.1. Updating Overview¶

The typical way to switch to a new Virtuozzo Hybrid Server release is as follows:

1. The nodes are updated automatically by default. Or you can update them via yum at any time.

   Note

   Automatic and smart updating is disabled for Virtuozzo Storage nodes by default. Update them manually according to Updating Nodes in Virtuozzo Storage Clusters.

2. If a new kernel is installed, the system will attempt to notify you via sendmail (if it is running). In this case, you need to manually reboot the nodes, one by one, and switch to the new kernel. On each updated node:

   1. Stop all running virtual environments or migrate them to other Virtuozzo Hybrid Server 7 nodes to avoid downtime.

   2. Restart the node and switch to the new kernel.

   3. Start the virtual environments or migrate them back to the updated node, depending on what you did in step 1.

   Note

   You can also perform these steps in Virtuozzo Automator.

3. If you use Virtuozzo Automator, update the container va-mn either using it (see Updating System Software) or by running the following commands on the node:

   # prlctl exec va-mn yum update
   # prlctl restart va-mn
   

4. If you use Virtuozzo Storage management panel, update the container vstorage-ui by running the following commands on the node:

   # prlctl exec vstorage-ui yum update
   # prlctl restart vstorage-ui