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Each failover system server uses the following ports:

  • 4000 (Supervisor Web Interface, only TCP).
  • 4646 (Nomad HTTP API, only TCP).
  • 4647 (Nomad RPC, only TCP).
  • 4648 (Nomad LAN/WAN Serf (Gossip), TCP and UDP).
  • 8300
  • 8301 
  • 8302 
  • 8500
  • 8600
  • 50051
  • (Consul Server RPC, only TCP).
  • 8301 (Consul LAN Serf (Gossip), TCP and UDP).
  • 8302 (Consul WAN Serf (Gossip), TCP and UDP).
  • 8500 (Consul HTTP API, only TCP).
  • 8600 (Consul DNS, TCP and UDP).

Moreover, each node of the cluster has its pre-defined unique port range (see Installation).

For best results, use port numbers from 20111 to 32000Additionally, each node requires a pre-defined range of ports to operate (see Setting up basic configuration).