16.4 Starting and stopping the node switching system for the host management model
To use and operate the node switching system for the host management model, you must first specify the required environment settings, such as preparing the hosts for the N active nodes and one standby node and registering the script for monitoring, starting, or stopping Management Server and Administration Agent that are monitored by the cluster software. For details on how to specify the settings, see 16.3.1 Procedure for setting up the node switching system for the host management model.
This subsection describes the points to be noted when starting and stopping a cluster configuration of the active node Application Server (active node 1 of Node1 and active node 2 of Node2) and the standby node Application Server (standby node 1 and standby node 2 of Node3).
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When you start the operations, start the active node Application Server (active node 1 of Node1 and active node 2 of Node2) and set the standby node Application Server (standby node 1 and standby node 2 of Node3) in the standby state.
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You cannot start the active node and standby node Application Servers concurrently. When you need to replace J2EE applications, stop the service, and then switch the active node and standby node. Stop the J2EE applications one by one, replace them, and then set up and deploy the J2EE applications as and when required.