Migrating servers from multi-broker replication domains to data replication domains
You can migrate multi-broker replication domains to data replication domains. Any multi-broker domains that exist in your application server environment were created with a previous version of the product.
Before you begin
Determine if the application server configuration you are migrating:
- Uses an instance of data replication service in peer-to-peer mode
or in client/server mode.
Before you begin migrating a client/server mode replication domain, consider if migrating your replication domains might cause a single point of failure. Because you migrate the servers to the new type of replication domain one at a time, you risk a single point of failure if there are 3 or fewer application servers. Before migrating, configure at least 4 servers that use multi-broker replication domains. Perform the following steps to migrate the multi-broker domains to data replication domains:
Dynamic cache replication domains use the peer-to-peer topology.
- Uses HTTP session memory-to-memory replication that is overloaded
at the application or web module level.
If the application server configuration you are migrating uses HTTP session memory-to-memory replication that is overloaded at the application or web module level, you must upgrade your deployment manager to the current version of the product before you start the migration process.
About this task
After you upgrade your deployment manager to the latest version of the product, you can only create data replication domains. Any multi-broker domains that you created with a previous version of the product are still functional, however, you cannot use the administrative console to create new multi-broker domains or replicators.
The different versions of application servers cannot communicate with each other. When migrating your servers to the current version of the product, keep at least two application servers running on the previous version so that replication remains functional.
Make sure that all of your application servers that are using this multi-broker domain have been migrated to the current version of the product before you start to migrate any multi-broker domains that exist in your configuration.
To migrate the multi-broker domains that exist in your configuration: