The typical approach to applying OS patches in a clustered environment is to patch an idle server, let it reboot and rejoin the cluster, and make sure it's running OK. If it is, use the cluster software to switch application(s) from an active server to the one you just patched, and if the app comes up successfully there, apply the patch to the server that's now idle. Keep doing this until all nodes in the cluster have been patched.
Eric ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of upen Sent: Thursday, December 06, 2007 4:03 PM To: veritas-ha@mailman.eng.auburn.edu Subject: [Veritas-ha] best way for patching of cluster servers Hi when it is patching of Sun stand alone servers I can patch them and I know after reboot everything will be fine. I wanted to how to patch Veritas-ha clustered Sun OS 5.9 Machines. Right now the cluster service and application services are running on Server 2. I am not sure after patching if something messes the cluster or applications running. Please let me know best practices to update patches on Cluster servers so that machines will have least down time. We are running Veritas-ha with blackboard application services which includes apache + oracle applications too. Please let me know if any more details are required to help.. Thanks in advance -- upen, emerge -uD life (Upgrade Life with dependencies)
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