Cisco Cisco Expressway
Changing the master peer of an
Expressway cluster
Expressway 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 Expressways which think they are cluster master.
state where there are multiple Expressways which think they are cluster master.
On the “new” Master Expressway:
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 Expressway that report ‘Cluster
master mismatch’ or ‘Cluster replication error’ – they will be rectified as part of this procedure.
master mismatch’ or ‘Cluster replication error’ – they will be rectified as part of this procedure.
On all other Expressway 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 Expressway.
3. Click Save.
On each Expressway 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 Expressways 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 Expressway 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.
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 an Expressway cluster is now complete.
Cisco Expressway Cluster Creation and Maintenance Deployment Guide (X8.5)
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Changing the master peer of an Expressway cluster