我有一个在码头工人容器中运行的领事 当我开始另一位领事代理人（而不是码头工人）时，它说：
[WARN] memberlist: Was able to reach container_name via TCP but not UDP, network may be misconfigured and not allowing bidirectional UDP
我想在这里组建一个集群，但领导人选举仍然失败 我该如何解决这个问题？
docker-compose.yml中的端口规范（docker-compose version：1）
ports:
- "8300:8300"
- "8301:8301"
- "8301:8301/udp"
- "8302:8302"
- "8302:8302/udp"
- "8400:8400"
- "8500:8500"
- "8600:8600"
- "8600:8600/udp"
在Docker容器中运行的Consul1的日志：
Node name: '<host>'
Datacenter: 'dc1'
Server: true (bootstrap: true)
Client Addr: 0.0.0.0 (HTTP: 8500, HTTPS: -1, DNS: 8600, RPC: 8400)
Cluster Addr: <host_ip> (LAN: 8301, WAN: 8302)
Gossip encrypt: false, RPC-TLS: false, TLS-Incoming: false
Atlas: <disabled>
==> Log data will now stream in as it occurs:
2017/06/08 03:39:44 [INFO] raft: Restored from snapshot 13-35418-1496826625488
2017/06/08 03:39:44 [INFO] serf: EventMemberJoin: <host> <host_ip>
2017/06/08 03:39:44 [INFO] raft: Node at <host_ip>:8300 [Follower] entering Follower state
2017/06/08 03:39:44 [INFO] consul: adding LAN server <host> (Addr: <host_ip>:8300) (DC: dc1)
2017/06/08 03:39:44 [INFO] serf: EventMemberJoin: <host>.dc1 <host_ip>
2017/06/08 03:39:44 [INFO] consul: adding WAN server <host>.dc1 (Addr: <host_ip>:8300) (DC: dc1)
2017/06/08 03:39:44 [ERR] agent: failed to sync remote state: No cluster leader
2017/06/08 03:39:45 [WARN] raft: Heartbeat timeout reached, starting election
2017/06/08 03:39:45 [INFO] raft: Node at <host_ip>:8300 [Candidate] entering Candidate state
2017/06/08 03:39:45 [INFO] raft: Election won. Tally: 1
2017/06/08 03:39:45 [INFO] raft: Node at <host_ip>:8300 [Leader] entering Leader state
2017/06/08 03:39:45 [INFO] consul: cluster leadership acquired
2017/06/08 03:39:45 [INFO] consul: New leader elected: <host>
2017/06/08 03:39:45 [INFO] raft: Disabling EnableSingleNode (bootstrap)
2017/06/08 03:39:45 [INFO] raft: Added peer <host_ip>:9300, starting replication
2017/06/08 03:39:45 [INFO] raft: Removed peer <host_ip>:9300, stopping replication (Index: 36201)
2017/06/08 03:39:45 [INFO] raft: Added peer <host_ip>:9300, starting replication
2017/06/08 03:39:45 [INFO] raft: Added peer <host_ip>:10300, starting replication
2017/06/08 03:39:45 [INFO] raft: Removed peer <host_ip>:10300, stopping replication (Index: 36228)
2017/06/08 03:39:45 [INFO] raft: Removed peer <host_ip>:9300, stopping replication (Index: 36230)
2017/06/08 03:39:45 [ERR] raft: Failed to AppendEntries to <host_ip>:10300: dial tcp <host_ip>:10300: getsockopt: connection refused
2017/06/08 03:39:45 [ERR] raft: Failed to AppendEntries to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:39:45 [ERR] raft: Failed to AppendEntries to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:39:45 [ERR] raft: Failed to AppendEntries to <host_ip>:10300: dial tcp <host_ip>:10300: getsockopt: connection refused
2017/06/08 03:39:45 [ERR] raft: Failed to AppendEntries to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:39:49 [WARN] agent: Check 'vault::8200:vault-sealed-check' missed TTL, is now critical
2017/06/08 03:39:50 [INFO] serf: EventMemberJoin: server2 <host_ip>
2017/06/08 03:39:50 [INFO] consul: adding LAN server server2 (Addr: <host_ip>:9300) (DC: dc1)
2017/06/08 03:39:50 [INFO] raft: Added peer <host_ip>:9300, starting replication
2017/06/08 03:39:50 [WARN] raft: AppendEntries to <host_ip>:9300 rejected, sending older logs (next: 36231)
2017/06/08 03:39:50 [INFO] raft: pipelining replication to peer <host_ip>:9300
2017/06/08 03:39:50 [INFO] consul: member 'server2' joined, marking health alive
2017/06/08 03:39:52 [INFO] agent: Synced service 'vault::8200'
2017/06/08 03:39:52 [INFO] agent: Synced check 'vault::8200:vault-sealed-check'
2017/06/08 03:40:06 [INFO] agent: Synced check 'vault::8200:vault-sealed-check'
2017/06/08 03:40:18 [ERR] raft: Failed to heartbeat to <host_ip>:9300: EOF
2017/06/08 03:40:18 [INFO] raft: aborting pipeline replication to peer <host_ip>:9300
2017/06/08 03:40:19 [ERR] raft: Failed to AppendEntries to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:40:19 [ERR] raft: Failed to heartbeat to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:40:19 [ERR] raft: Failed to AppendEntries to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:40:19 [ERR] raft: Failed to heartbeat to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:40:19 [ERR] raft: Failed to AppendEntries to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:40:19 [ERR] raft: Failed to AppendEntries to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:40:19 [ERR] raft: Failed to heartbeat to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:40:19 [WARN] raft: Failed to contact <host_ip>:9300 in 501.593114ms
2017/06/08 03:40:19 [WARN] raft: Failed to contact quorum of nodes, stepping down
2017/06/08 03:40:19 [INFO] raft: Node at <host_ip>:8300 [Follower] entering Follower state
2017/06/08 03:40:19 [INFO] consul: cluster leadership lost
2017/06/08 03:40:19 [ERR] raft: Failed to AppendEntries to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:40:20 [WARN] raft: Heartbeat timeout reached, starting election
2017/06/08 03:40:20 [INFO] raft: Node at <host_ip>:8300 [Candidate] entering Candidate state
2017/06/08 03:40:20 [ERR] raft: Failed to make RequestVote RPC to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:40:21 [INFO] memberlist: Suspect server2 has failed, no acks received
2017/06/08 03:40:22 [WARN] raft: Election timeout reached, restarting election
2017/06/08 03:40:22 [INFO] raft: Node at <host_ip>:8300 [Candidate] entering Candidate state
2017/06/08 03:40:22 [ERR] raft: Failed to make RequestVote RPC to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:40:23 [INFO] memberlist: Suspect server2 has failed, no acks received
2017/06/08 03:40:23 [WARN] dns: Query results too stale, re-requesting
2017/06/08 03:40:23 [ERR] dns: rpc error: No cluster leader
2017/06/08 03:40:23 [WARN] raft: Election timeout reached, restarting election
2017/06/08 03:40:23 [INFO] raft: Node at <host_ip>:8300 [Candidate] entering Candidate state
2017/06/08 03:40:23 [ERR] raft: Failed to make RequestVote RPC to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:40:24 [WARN] raft: Election timeout reached, restarting election
2017/06/08 03:40:24 [INFO] raft: Node at <host_ip>:8300 [Candidate] entering Candidate state
2017/06/08 03:40:24 [ERR] raft: Failed to make RequestVote RPC to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:40:24 [ERR] http: Request PUT /v1/session/renew/8c4efe65-07c3-f93e-6679-f2bc95f8e92c, error: No cluster leader from=172.17.0.4:57031
2017/06/08 03:40:25 [INFO] memberlist: Suspect server2 has failed, no acks received
2017/06/08 03:40:25 [ERR] http: Request PUT /v1/session/renew/8c4efe65-07c3-f93e-6679-f2bc95f8e92c, error: No cluster leader from=172.17.0.4:57061
2017/06/08 03:40:26 [INFO] memberlist: Suspect server2 has failed, no acks received
2017/06/08 03:40:26 [INFO] memberlist: Marking server2 as failed, suspect timeout reached
2017/06/08 03:40:26 [INFO] serf: EventMemberFailed: server2 <host_ip>
2017/06/08 03:40:26 [INFO] consul: removing LAN server server2 (Addr: <host_ip>:9300) (DC: dc1)
2017/06/08 03:40:26 [WARN] raft: Election timeout reached, restarting election
2017/06/08 03:40:26 [INFO] raft: Node at <host_ip>:8300 [Candidate] entering Candidate state
2017/06/08 03:40:26 [ERR] raft: Failed to make RequestVote RPC to <host_ip>:9300: dial tcp <host_ip>:9300: getsockopt: connection refused
2017/06/08 03:40:26 [ERR] agent: coordinate update error: No cluster leader
2017/06/08 03:40:26 [ERR] http: Request PUT /v1/session/renew/8c4efe65-07c3-f93e-6679-f2bc95f8e92c, error: No cluster leader from=172.17.0.4:57064
2017/06/08 03:40:27 [WARN] dns: Query results too stale, re-requesting
2017/06/08 03:40:27 [ERR] dns: rpc error: No cluster leader
2017/06/08 03:40:27 [WARN] raft: Election timeout reached, restarting election
领事日志：
==> WARNING: Expect Mode enabled, expecting 2 servers
==> Starting Consul agent...
==> Starting Consul agent RPC...
==> Consul agent running!
Node name: 'server2'
Datacenter: 'dc1'
Server: true (bootstrap: false)
Client Addr: 0.0.0.0 (HTTP: 9500, HTTPS: -1, DNS: 9600, RPC: 9400)
Cluster Addr: <host_ip> (LAN: 9301, WAN: 9302)
Gossip encrypt: false, RPC-TLS: false, TLS-Incoming: false
Atlas: <disabled>
==> Log data will now stream in as it occurs:
2017/06/08 09:09:50 [INFO] raft: Restored from snapshot 13-35418-1496892834061
2017/06/08 09:09:50 [INFO] serf: EventMemberJoin: server2 <host_ip>
2017/06/08 09:09:50 [INFO] serf: EventMemberJoin: server2.dc1 <host_ip>
2017/06/08 09:09:50 [INFO] raft: Node at <host_ip>:9300 [Follower] entering Follower state
2017/06/08 09:09:50 [INFO] consul: adding LAN server server2 (Addr: <host_ip>:9300) (DC: dc1)
2017/06/08 09:09:50 [INFO] consul: adding WAN server server2.dc1 (Addr: <host_ip>:9300) (DC: dc1)
2017/06/08 09:09:50 [ERR] agent: failed to sync remote state: No cluster leader
2017/06/08 09:09:50 [INFO] agent: Joining cluster...
2017/06/08 09:09:50 [INFO] agent: (LAN) joining: [<host_ip>:8301 <host_ip>:10301]
2017/06/08 09:09:50 [INFO] serf: EventMemberJoin: <host> <host_ip>
2017/06/08 09:09:50 [INFO] consul: adding LAN server <host> (Addr: <host_ip>:8300) (DC: dc1)
2017/06/08 09:09:50 [INFO] agent: (LAN) joined: 1 Err: <nil>
2017/06/08 09:09:50 [INFO] agent: Join completed. Synced with 1 initial agents
2017/06/08 09:09:50 [WARN] raft: Failed to get previous log: 36233 log not found (last: 36230)
2017/06/08 09:09:50 [INFO] raft: Removed ourself, transitioning to follower
2017/06/08 09:09:50 [INFO] raft: Removed ourself, transitioning to follower
2017/06/08 09:09:52 [WARN] memberlist: Was able to reach <host> via TCP but not UDP, network may be misconfigured and not allowing bidirectional UDP
==> Newer Consul version available: 0.8.3
2017/06/08 09:09:54 [WARN] memberlist: Was able to reach <host> via TCP but not UDP, network may be misconfigured and not allowing bidirectional UDP
2017/06/08 09:09:56 [WARN] memberlist: Was able to reach <host> via TCP but not UDP, network may be misconfigured and not allowing bidirectional UDP
2017/06/08 09:09:57 [WARN] memberlist: Was able to reach <host> via TCP but not UDP, network may be misconfigured and not allowing bidirectional UDP
答案 0 :(得分：1)
关于双向UDP 的consul意味着，consul代理需要看到它的consul服务器和反之亦然，consul服务器需要看到它的代理。
Consul agent -- [UDP] --> Consul Server
Consul agent <--[UDP] -- Consul Server
与TCP不同，它们是两种不同的通信，它使用与代理已启动的通道相同的通道。
因此，如果您的领事代理和服务器不在同一网络（即泊坞网络）中，则需要在两端公开端口。并考虑advertise的概念，即代理商宣布与之联系的地址。