Disable automatic synchronization to protect the clustered source environment
The target environment initially uses the same ports as the source environment. There are three important steps complete to ensure the source and target environments do not become corrupted.
- Disable automatic synchronization on all nodes in the cluster.
In a clustered environment, turn off automatic node synchronization before starting the migration. When the automatic synchronization is enabled, the node agent on each node automatically contacts the deployment manager every synchronization interval. As you migrate nodes, some of the migration-specific configuration for a node might get replicated in the clustered environment. For this reason, it is preferable to disable the automatic synchronization and manually sync.
- Start the WAS console.
- Select System Administration > Node Agents in the navigation tree.
- Click nodeagent for the required node.
- Click File Synchronization Service under the Additional Properties section.
- Clear the Enable service at server startup check box selection to disable the synchronization service at startup.
- Clear the Automatic Synchronization check box selection to disable the automatic synchronization feature.
- Click OK and Save.
- Repeat these steps for all remaining nodes.
- Select System Administration > Nodes in the navigation tree.
- Select all nodes that must be manually synchronized, and click Synchronize.
- Select System Administration > Node Agents in the navigation tree.
- For the primary node, select the node agent and click Restart.
- Stop the source deployment manager and node agents before starting the cluster migration.
This step is required to ensure the source and target environments do not become corrupted during the migration process. The application servers can continue to run, but administration is disabled until the ports for the target environment are changed in Migrate a Cluster Step 3: Upgrade nodes. Verify the source deployment manager and node agents do not start until you complete Migrate a Cluster Step 2: Migrate node profiles.
- Open the WAS console.
- Click System administration > Node agents.
- Select the check box for the node agents and click Stop.
- Click System administration > dmgr.
- On the Configuration tab of the deployment manager settings, click Stop.
- Update the ports on the target environment.
You will update the ports for the target environment in a step that is detailed in Migrate a Cluster Step 3: Upgrade node profiles. After you update the ports, the source deployment manager and node agents can be started.