Recommendations for agent handlers

Each SES Evolution agent connects to a group of agent handlers.

We recommend that you install at least two agent handlers per handler group to ensure service continuity in the event of a failure.

Install each handler on different servers, virtual or physical.

Count one agent handler per 25,000 agents.

With redundancy

In case of failure, the load normally supported by the failed server switches automatically over to the other server. The switchover is effective from the first connection of agents to their agent handler group following the breakdown.

We recommend installing another one to maintain redundancy.

To install a new agent handler, use the installation center on the desired machine.

After installation, from the administration console, you must:

• add the new agent handler to the group concerned,

• deploy the environment so that the new handler is known to the agents.

If all agent handlers fail, refer to the following section.

No redundancy

If you only had one agent handler in a group, you must restore the machine from a backup (virtual machine snapshot or physical machine disk image). This makes the operation transparent for the agents, who then reconnect to the same handler.

When the machine restarts, the agent handler connects to the backend server to retrieve the latest security policies and applies them to the agents.