Nokia IPSO 4.0 User Manual

Note
You should upgrade the master last.

1. Upgrade node A and restart it.

B and C continue to function as a 3.6 cluster. Node A (running the later version of IPSO) 
rejoins the cluster as a member.

2. Upgrade node B and restart it.

Node C continues to function as a 3.6 cluster. Node B (running the later version of IPSO) 
rejoins the cluster as a member.

3. Make sure that nodes A and B have successfully restarted and rejoined the cluster. 

Note
Performing this steps ensures that there will be no interruption in service when node C 
restarts.

4. Upgrade node C and restart it.

When node C begins to restart, node A or B is selected as the new master and both nodes 
continue forwarding traffic. When node C completes the process of restarting, it joins the 
new cluster.

After you complete the upgrade process, the cluster is active but you cannot use Cluster Voyager 
or the CCLI until you create a password for a cluster administrator user on each of the cluster 
nodes. After you upgrade IPSO on the cluster nodes, you can perform the following procedure to 
create a password for the 

cadmin 

user on each of the nodes.

1. Access the Clustering Setup Configuration page .

2. Click 

Change 

cadmin

 password

. 

The Cluster Management Configuration page appears.

3. Enter a password for the user 

cadmin

.

Note
You must use the same password on each node that you add to the cluster. This is also 
the password that you use to log into Cluster Voyager or the CCLI.

4. Enter the password for 

cadmin

 again (for verification).

5. Click Apply. 

The page displays fields for changing the 

cadmin

 password. Use this page if you want to 

change this password in the future.