Forum Discussion

vucni88888's avatar
vucni88888
Level 2
3 years ago

upgrade on node

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?

  • frankgfan's avatar
    frankgfan
    Moderator
    3 years ago

    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

    • vucni88888's avatar
      vucni88888
      Level 2
      3 years ago

      at least can i failover a service from a node with different vcs version as target?

      • frankgfan's avatar
        frankgfan
        Moderator
        3 years ago

        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).