Well, in my case that was fairly easy. We have hardware mirrored system disks (/, /usr, /var, /root, /opt.....) so prior to performing my upgrades, I migrated any services that were running on that node, quiesced the system and then broke the mirror. I then brought the system back up with all the cluster services switched off, performed the upgrade and in each case the node then re-joined the cluster without a problem.
I'm not familiar with version control that you can perform with "Wayback" but the principal would be the same, ie, keeping a known good OS version that you could fall back to in case of a problem. [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 01/11/2008 11:37 AM Please respond to linux clustering <[email protected]> To linux clustering <[email protected]> cc Subject Re: [Linux-cluster] RHEL 4.5 -> 4.6 migration I'm curious - please, do tell about the solid rollback plan. Something like the stackable wayback file system for root? On Fri, 11 Jan 2008, Paul n McDowell wrote: > I did a rolling upgrade of a 5 node GFS environment from 4.5 to 4.6 over a > week and had no interoperability issues. I made sure that I had a solid > roll-back plan before I upgraded each node just in case. > > > > > > [EMAIL PROTECTED] > Sent by: [EMAIL PROTECTED] > 01/11/2008 10:36 AM > Please respond to > linux clustering <[email protected]> > > > To > [email protected] > cc > > Subject > [Linux-cluster] RHEL 4.5 -> 4.6 migration > > > > > > > Has anyone migrated from an existing 4.5 to the newer 4.6 cluster suite? > We would like to roll out 4.6 in our 11-node cluster, but only one node at > a time, over the course of 2-weeks. Does the two versions intermix well > enough to do that? Or do we need to do take some kind of special care or > precaution, like when injecting this dilithium crystal chamber with an > inverse tachyon pulse from the main deflector dish? > -- > Linux-cluster mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/linux-cluster > -- Linux-cluster mailing list [email protected] https://www.redhat.com/mailman/listinfo/linux-cluster
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