07-01-2022 01:26 AM - edited 07-01-2022 03:08 AM
Hi,
I like to upgrade 2 nodes vcs cluster.
Let`s say that i failover the service that runs in node 1 to node2,and i hastop -local ,then stop gab and llt,then unload gab and llt.
I upgrade vcs on node1.
Now if i like to move back the service to node 1,what are those steps?
If i start vcs on node1 then vcs on node1 and 2 have separate version and had can not work.right?
i can not fail over the service from node 2 to 1.
i can off line the resource group on node 2 ,then stop vcs on node 2 .
here i can start vcs in single node on node 1->this bring the service on node 1,then upgrade vcs on node 2 and on gabconfing -c n2.
or i upgrade vcs on node 2,then start vcs on both nodes.
how is correct?
07-01-2022 04:06 AM
Please consult with VCS installation guide. There is a chapter which covers and contains all needed info/procedures for performing upgrade VCS in different scenarios
07-01-2022 08:01 AM
at least can i failover a service from a node with different vcs version as target?
07-01-2022 09:34 PM
the term "failover" means to move service groups(resources) between the nodes in the same running VCS nodes.
That is the nodes running different versions of VCS cannot form a cluster. ( slave nodes cannot join the running HAD).
however, if for whatever reason, you want to online the applications on a node, you can do it manually (outside VCS).
Please be aware of possible "concurrency violation (possible data corruption) when bring online applications manually outside VCS).