topic Re: Installing patches on a cluster node in Operating System - HP-UX

Installing patches on a cluster node

José Enrique González — Thu, 13 May 2004 14:01:24 GMT

Hi:

If I install a patch on a node of a cluster, is there any way it can affect the rest of the nodes, replicated, or so? I'm almost sure it doesn't, but I need to be completely sure as I'm about to mantain a very sensible cluster. Thanks in advance for your comments.

Re: Installing patches on a cluster node

Mel Burslan — Thu, 13 May 2004 14:03:28 GMT

unless you specifically apply the patch to all cluster members, it won;t affect anything. Patches do not self-propagate to their cluster partners.

Re: Installing patches on a cluster node

Ashwani Kashyap — Thu, 13 May 2004 14:06:30 GMT

No , it will only affect the node you install the patch on . There is no patch replication .

Re: Installing patches on a cluster node

Camel_1 — Thu, 13 May 2004 14:13:12 GMT

Of course not, if the patch require reboot, make sure you disable the package switching, then halt the node, after applied patch, join the node back to cluster and enable package switching.

Simon

Re: Installing patches on a cluster node

Steven E. Protter — Thu, 13 May 2004 14:17:07 GMT

My process would be:

cmhaltnode

# install patches

# reset cluster flags

# restart the node.

Each machine in the cluster

You don't want to do an installation on one node and replicate it across the structure. What happens if the patch makes the machine unbootable?

There goes your high availability cluster.

SEP