When Master Node is failed, automatically master replica node is promoted as master node. If old master is online again the it will become master replica node. If you want to forcefully promote Master Replica as an new Master, Then follow the steps given below:
1. Log in to the Admin UI on the Master Replica node using the URL:
https://<IP_or_FQDN>/admin
2. Select the current Master node and click Take Node Offline/Online.
Enter a reason in the Take Node Offline/Online dialogue box and then click OK.
Note: Wait for a few minutes for the change to take effect. The Cluster Role value for the Master Replica node changes to Master. The previous Master node may still be listed as having the Master role. You may see two Master nodes listed.
1. Log in to the Admin UI on the Master Replica node using the URL:
https://<IP_or_FQDN>/admin
2. Select the current Master node and click Take Node Offline/Online.
Enter a reason in the Take Node Offline/Online dialogue box and then click OK.
Note: Wait for a few minutes for the change to take effect. The Cluster Role value for the Master Replica node changes to Master. The previous Master node may still be listed as having the Master role. You may see two Master nodes listed.
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