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Can anyone comment if this criticism is valid? "In which monitoring agents rely upon correct, truthful, answers about cluster state from the system they're mon

• antirez 14y ago
  It is not :) Just replied: "@cscotta Hi, you misunderstood how it works: Pub/Sub is only used for discovery on startup. Sentinel-to-sentinel p2p for critical stuff." Pub/Sub is used to make the configuration simpler when you start a Sentinel cluster at a cold time when everything is working and your master is ok. This allows us to auto-discover the other Sentinels, to check the slaves, and so forth. Instead in order to understand if a system is down, who is the Sentinel that performs the failover, and for all the critical stuff, Sentinel to Sentinel messages are used without caring if the master Pub/Sub works.