Cisco Cisco TelePresence Video Communication Server Expressway
Changing the master peer of a VCS cluster
This procedure can be applied regardless of whether the old master peer is accessible or not.
Note: The operations in this process should be performed successively so that the cluster is not left in a
state where there are multiple VCSs which think they are cluster master.
state where there are multiple VCSs which think they are cluster master.
On the “new” Master VCS:
1. Go to
System > Clustering
.
2. From the Configuration master drop-down menu select the ID number of the peer entry that says ‘This
system’.
3. Click Save.
While performing this change of master peer, ignore any alarms on VCS that report ‘Cluster master
mismatch’ or ‘Cluster replication error’ – they will be rectified as part of this procedure.
mismatch’ or ‘Cluster replication error’ – they will be rectified as part of this procedure.
On all other VCS peers, starting with the "old" master peer (if it is still accessible):
1. Go to
System > Clustering
.
2. From the Configuration master drop-down menu select the ID number of the “new” Master VCS.
3. Click Save.
On each VCS in the cluster (including the master):
1. Confirm that the change to the Configuration master has been accepted by going to
System >
Clustering
and refreshing the page.
2. If any VCSs have not accepted the change, repeat the steps above.
3. Check that the cluster database status reports as Active.
Note that any alarms raised on the VCS peers that relate to ‘Cluster master mismatch’ and ‘Cluster
replication error’ should clear automatically after approximately 2 minutes.
replication error’ should clear automatically after approximately 2 minutes.
Cisco TMS
No changes are required; Cisco TMS will see the master change on the VCS cluster and report this
appropriately.
appropriately.
If the old master is not available
If you are changing the Master because the “old” Master is not accessible, remove the “old” Master using the
procedure.
If the “old” Master was not accessible when changing the cluster master peer, but later becomes available,
you must bring it back into the cluster using the
you must bring it back into the cluster using the
procedure.
Changing the master peer of a VCS cluster is now complete.
Cisco TelePresence VCS Cluster Creation and Maintenance Deployment Guide (X8.5)
Page 26 of 49
Changing the master peer of a VCS cluster