How to Verify the WebLogic Server Installation and Configuration for Multi-Master Services

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Use this procedure to verify the WebLogic Server Administration Server, WebLogic Managed Server, and database installation and configuration for multi-master services. This procedure does not verify that your application is highly available because you have not installed the data service yet.

Note - The following steps are for the multi-master configuration that is described in Standard Data Service Configurations. If you are planning a different configuration, you must configure the WebLogic Server accordingly.

Verify that the logical-host-1 and logical-host-2 configured in RG1 and RG2 are online on cluster-node1 and cluster-node2 respectively.

If you are using a database, verify that the database is running.
Go to the directory that contains the Administration Server and the Managed Server START scripts.
Start the Administration Server by running the Administration Server START script.
For example:
```
cluster-node1>cd /mnt/user_projects/domains/base_domain
cluster-node1>./startWebLogic.sh
```
After the Administration Server starts successfully, start the Managed Server mgd1 on phys-host-1.
For example:
```
cluster-node1>cd /mnt/user_projects/domains/base_domain_mgd1
cluster-node1>./startManagedWebLogic.sh mgd1
```
Ensure that you can successfully connect to the logical-host-1 from a client.
Verify that the Administration Server and the Managed Servers are in the RUNNING mode on phys-node-1.
Ensure that you can successfully connect to the logical-host-2 from a client.
Go to the directory containing the domain directory on phys-host-2 and start the Managed Server mgd2.
For example:
```
cluster-node1>cd /mnt/user_projects/domains/base_domain_mgd1
cluster-node1>./startManagedWebLogic.sh mgd2
```
If the clients can successfully connect to the Administration Server and the Managed Server on each of the potential master nodes, you have successfully configured the WebLogic Servers to work with HA for WebLogic Server in a multi-master configuration.
Stop the Administration Server and the Managed Servers, and proceed to the next task to install the HA for WebLogic Server software.