Windows Server® 2012 Unleashed
by Rand Morimoto, Michael Noel, Guy Yardeni, Omar Droubi, Andrew Abbate, Chris Amaris
Agent Restart Recovery
Agents will heartbeat every 60 seconds by default, contacting their management server to check for new rules and upload data. On the management server, there is a Health Service Watcher corresponding to each managed agent. If the Health Service Watcher for an agent detects three missed heartbeats in a row (that is, 3 minutes without a heartbeat), the Health Service Watcher executes a pair of diagnostics:
• First, the Health Service Watcher attempts to ping the agent.
• Second, the Health Service Watcher checks to see if the Health Service is running on the agent.
An alert is then generated for each of the diagnostics if they failed. If the agent is reachable via ping but the Health Service is stopped, there is a recovery ...
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