Replicate data with a multi-broker replication domain

Use this task to manage replication domains that we migrated from a v6.x or earlier product environment.

For transitioning users: Multi-broker replication domains are not created in v7.0 product environments. However they can be migrated from existing v6.x product environments. If we migrate v6.x multi-broker replication domains, we can use the Multi-broker domain panel in the v7.0 administrative console to manage these domains.trns

Although we can manage migrated multi-broker domains with the current version of the product, after we upgrade the deployment manager, we can create only data replication domains in the administrative console. Consider migrating any existing multi-broker domains to the new data replication domains.

If we are performing this task, it is assumed that we configured replication with a previous version of the product, and defined replication domains that list connected replicator entries, residing in managed servers in the cell that can exchange data. We can manage these existing replication domains and replicator entries, but we cannot create new multi-broker replication domains or new replicator entries in the administrative console.

A replicator does not need to run in the same process as the application server that uses it. However, it might be easier to manage replicators and replication domains if a one-to-one relationship exists between replicators and application servers. During configuration, we can select the local replicator as the default replicator.

Tasks

1. Manage multi-broker replication domain configuration settings. In the administrative console, click Environment > Replication domains.

2. Click Multi-broker domain >multi-broker domain_name, and update the values for that particular multi-broker replication domain. The default values are generally sufficient, especially for the pooling and timeout properties.
   1. Name the replication domain.

   2. Timeout interval.

   3. Specify the encryption type. The DES and TRIPLE_DES options encrypt data sent between application server processes and better secure the network joining the processes.
   4. Partition the replication domain to filter the number of processes to which data is sent. Partitioning the replication domain is most often done if we are replicating data to support retrieval of an HTTP session if the process maintaining the HTTP session fails. Partitioning is not supported for sharing of cached data that is maintained by web container dynamic caching.

   5. Specify whether we want a single replication of data to be made. Enable the option if we are replicating data to support retrieval of an HTTP session if the process maintaining the HTTP session fails.

   6. Specify whether processes should receive data in objects or bytes. Processes receiving data in objects receive the data and class definitions. Processes receiving data in bytes receive the data only.

   7. Configure a pool of replication resources. Pooling replication resources can enhance the performance of the replication service.

3. Maintain the replicators that we have already defined. We cannot create any replicators. The default convention is to define a replicator in each application server that uses replication. However, we can define a pool of replicators, separate from the servers hosting applications.

   1. In the administrative console, click Environment > Replication domains replication_domain_name > Replicator entries > replicator_entry_name.

   2. Specify a replicator name and select a server available within the cell to which we can assign a replicator. Also specify a host name and ports. Note that a replicator has two ports (replicator and client ports) that use the same host name but have different ports.

4. Click OK to save the changes.

Subtopics

• Multi-broker replication domains
  A multi-broker replication domain is a collection of replication entries, or replicator instances, used by clusters or individual servers within a cell. Multi-broker replication domains were created with a previous release of the product.
• Multi-broker replication domain settings
  Configure a multi-broker replication domain. This administrative console page applies only to replication domains that were created with a previous version of the product. Replication domains use the data replication service (DRS).
• Replicator entry collection
  View and manage replicator entries. Replicator entries are for use only with multi-broker replication domains. Each multi-broker replication domain consists of one or more replicator entries.
• Replicator entry settings
  View and configure a replicator entry, or replicator. Replicators are used with multi-broker replication domains.

Migrate servers from multi-broker replication domains to data replication domains

Replicating data across application servers in a cluster

Configure cache replication