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Adding NFS Management To An Existing VCS Cluster - Part One

Jan 27, 2009, 06:03 (0 Talkback[s])
(Other stories by Mike Tremell)

"We're also going to assume that we're dealing with a two-node cluster since that's easier to write about and cuts down on my over-explanation ;) Also, we've disabled all NFS services on the host OS (meaning that we've stopped them and removed them from init scripts so that the OS won't try to manage them itself! A simple "ps -ef|grep nfs" check before you proceed should show you any remaining running nfs programs which you should kill)

"1. The simple way (according to me :)

"a. Bring down your entire VCS cluster (all nodes) from the node that you'll be doing the modification of the main.cf file on. It's VERY IMPORTANT that you use the -force flag when running the "hastop -all" command, as this will cause VCS to go down, but won't affect any of the applications running. To put it another way, if you just run "hastop -all" without the -force flag, VCS will go down on all of your cluster's nodes cleanly and bring down all the resources it manages with it. We want to do this as covertly as possible."

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