You can assign the Control node role to any cluster node. The other nodes will have the Secondary node role. For example, you may need to change the roles due to a failure of the Control node, or if you have to remove the application from this server.
To assign the Secondary node role to the Control node:
The node settings window opens.
The Control node will become a Secondary node. The web interface of the Secondary node opens.
To assign the Control node role to a Secondary node:
The node settings window opens.
Authorization page opens in a new browser window.
The web interface of the Secondary node opens.
The Secondary node will become the Control node.
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