topic Re: Can the cluster be up when doing a cmapplyconf in Operating System - HP-UX

Can the cluster be up when doing a cmapplyconf

PamelaJThrasher — Thu, 24 Feb 2011 15:13:01 GMT

I am adding a lock disk to my existing 4 node cluster.

The cluster is running ServiceGuard version A.11.19.00

I have successfully run cmcheckconf. See the results below:
cmcheckconf -k -C /home/root/lockdisk_add/ocfs_prod.ascii
Defaulting MAX_CONFIGURED_PACKAGES to 300.
Defaulting MAX_CONFIGURED_PACKAGES to 300.
Modifying the cluster locking mechanism from majority to lvm while cluster ocfs_prod is running.
Adding First Cluster Lock VG /dev/vglock while cluster is running.
Adding FIRST_CLUSTER_LOCK_PV /dev/disk/disk1930 to node ph1dc190 while cluster is running.
Adding FIRST_CLUSTER_LOCK_PV /dev/disk/disk1962 to node ph1dc191 while cluster is running.
Adding FIRST_CLUSTER_LOCK_PV /dev/disk/disk1975 to node ph1dc200 while cluster is running.
Adding FIRST_CLUSTER_LOCK_PV /dev/disk/disk1926 to node ph1dc201 while cluster is running.
Modifying configuration on node ph1dc201
Modifying configuration on node ph1dc191
Modifying configuration on node ph1dc190
Modifying configuration on node ph1dc200
cmcheckconf: Verification completed with no errors found.
Use the cmapplyconf command to apply the configuration.

Can I run the cmapplyconf command without stopping the cluster? It is not clear from the man page.

Re: Can the cluster be up when doing a cmapplyconf

melvyn burnard — Thu, 24 Feb 2011 15:31:39 GMT

depedning upon the vesion of Serviceguard, you can or cannot do this.
As yu have A.11.19 you CAN do the cmapplyconf while the cluster is up and ruunning, as the output of cmcheckconf has not complained and has actually told you it can do it:
Adding FIRST_CLUSTER_LOCK_PV /dev/disk/disk1926 to node ph1dc201 while cluster is running

take a read of the Release Notes at http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c02029971/c02029971.pdf page 27
Also the managing Serviceguard manual

Re: Can the cluster be up when doing a cmapplyconf

PamelaJThrasher — Thu, 24 Feb 2011 15:41:31 GMT

Thank you!!

See above response for solution