Symptoms
Cluster failover, tmm restart, and tmm killed due to missed heartbeats. tmm crash
Impact
Traffic disrupted while tmm restarts.
Conditions
TMM is under load due to heavy traffic while MCP attempts to configure per-request policy. This can be caused by a modification to the policy or one of its agents, or by a restart of the TMM.
Workaround
When making changes to per-request policies, use a scheduled maintenance window so that impact to traffic is minimized.