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Deployment

Consider this suggested deployment:

freno deployment

Cross reference with high availability docs:

  • 3 or 5 freno nodes form a freno highly available service
  • One of them is elected leader, and it is the only node to:
    • Continuously probe backend stores
    • Serve /check queries
  • HAProxy service directs all traffic to the single active node
  • Clients consult with freno via HAProxy. They will implicitly connect to the leader node.
  • Based on freno's response they will either write or refrain from writing to backend stores.