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Example: Subscription Configuration with Six Servers

When you approach subscription configuration, consider the other roles the servers are performing before deciding on their subscription role. By default, the management server, the first server you install, is the default subscription proxy. All other servers are subscription clients of the default subscription proxy. While acceptable, it is better to configure an online subscription proxy and have the default proxy act as a failover or redundant proxy. A good practice is to assign the online proxy role to the least active server.

Example: Six Servers Where the Least Busy Server is the Online Subscription Proxy

Consider a scenario of six CA Enterprise Log Manager servers. The management server is dedicated to authenticating and authorizing users at login and storing application content. Four federated servers handle event processing and reporting. A sixth server is a dedicated restore point for investigating events from restored databases. An advantage of having a dedicated restore point is that you can keep old data from being included on current reports by not including this server in your federation.

In this example, the two servers labeled collection and reporting represent a configuration with exceptionally high processing requirements. These servers are federated in a hierarchical configuration, where the collection server is the child of the reporting server. The two servers that act as both collection and reporting servers represent a configuration with normal event volumes and scheduled reports. They are federated with each other and the dedicated reporting server in a meshed federation; that is, the three servers are peers. The purpose of federating servers is to extend the ability to get query results from the servers you federate. A federated query from any of the meshed servers returns events from itself and the other three servers in the federation.

Note: If you want to run consolidated reports on self-monitoring events, include the management server in the federation.

In this scenario, the recommended solution is to configure the restore point as the online subscription proxy because it is the least active server. Then configure each client to point to this online proxy, so the default proxy can act as a backup, if the online proxy is busy or unavailable.

More information:

Configuring a CA Enterprise Log Manager Federation