Cisco Cisco Expressway
Change the Primary Peer
You can do this procedure even if the current primary peer is not accessible.
Note
: Follow this process in the order listed, to avoid putting the cluster in a state where multiple peers are contending to
be the primary.
On the "new" primary 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 changing the primary peer, ignore any alarms on Expressway that report 'Cluster master mismatch' or
'Cluster replication error' – they will be rectified as part of this procedure.
'Cluster replication error' – they will be rectified as part of this procedure.
On all other Expressway peers, starting with the "old" primary 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" primary Expressway.
3.
Click Save.
On each Expressway in the cluster (including the primary):
1.
Confirm that the change to the Configuration master has been accepted by going to System > Clustering and
refreshing the page.
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.
error' should clear automatically after approximately 2 minutes.
If the old primary is not available
If the "old" primary was not accessible when you changed the cluster's primary peer, but later that Expressway becomes
available, you must clear its configuration and then bring it back into the cluster using the
available, you must clear its configuration and then bring it back into the cluster using the
Changing the primary peer of an Expressway cluster is now complete.
24
Cisco Expressway Cluster Creation and Maintenance Deployment Guide