Resolving discrepancies between an active and a replica instance
An active instance and its replica instance should always have the same configuration. However, discrepancies can occur between them in the following scenarios:
You upgrade or update the active instance, but the newer version or revision is not in the repository on the appliance where the replica is located.
You install a new add-on on the active instance but do not install it on the replica instance.
You update an add-on on the active instance, but the newer revision is not in the repository on the appliance where the replica is located.
You update the replica instance to a newer revision.
You install or update an add-on on the replica instance
To avoid these scenarios, adhere to the following best practices:
Always make sure that the required application and add-ons are available in the repositories on both appliances.
If you install an add-on on the active instance, also install it on the replica instance. Alternatively, you can make sure the add-on is in the repository on the appliance where the replica is located and then pause and resume replication.
Do not perform operations on the replica instance unless they are required to match the configuration of the active instance.
You can verify the configurations of the active and the replica instances from the Remote replication page. Locate the instance that you want to check and click . The window that appears displays discrepancies if any exist, along with instructions on how to resolve them.