consul server leader
方式1:
http://192.168.110.133:8500/v1/status/leader
方式2:
consul operator raft list-peers
Node ID Address State Voter RaftProtocol
agent1 2a3ae4a0-8193-7da9-f978-911d7df0d184 192.168.110.128:8300 leader true 3
agent2 5ca6550b-c211-d11f-0236-82a9572e2485 192.168.110.133:8300 follower true 3
agent3 10e1b43d-9393-6985-242b-8e31411839c5 192.168.110.137:8300 follower true 3