注册服务
定义服务
定义服务可以使用两种方法：
- 使用配置文件进行服务定义
- 调用 HTTP API 进行定义
Consul 会加载配置目录中的所有配置文件，配置文件是以 .json 结尾的，并且以字典顺序加载
创建配置文件
代码语言：javascript复制[root@h104 consul]# mkdir /etc/consul.d
[root@h104 consul]# echo '{"service": {"name": "web", "tags": ["rails"], "port": 80}}' > /etc/consul.d/web.json
[root@h104 consul]# cat /etc/consul.d/web.json
{"service": {"name": "web", "tags": ["rails"], "port": 80}}
[root@h104 consul]#指定配置文件启动服务
代码语言：javascript复制[root@h104 consul]# consul agent -dev -bind=192.168.100.104 -config-dir /etc/consul.d/
==> Starting Consul agent...
==> Starting Consul agent RPC...
==> Consul agent running!
Node name: 'h104'
Datacenter: 'dc1'
Server: true (bootstrap: false)
Client Addr: 127.0.0.1 (HTTP: 8500, HTTPS: -1, DNS: 8600, RPC: 8400)
Cluster Addr: 192.168.100.104 (LAN: 8301, WAN: 8302)
Gossip encrypt: false, RPC-TLS: false, TLS-Incoming: false
Atlas: <disabled>
==> Log data will now stream in as it occurs:
2016/03/18 17:07:20 [INFO] serf: EventMemberJoin: h104 192.168.100.104
2016/03/18 17:07:20 [INFO] serf: EventMemberJoin: h104.dc1 192.168.100.104
2016/03/18 17:07:20 [INFO] raft: Node at 192.168.100.104:8300 [Follower] entering Follower state
2016/03/18 17:07:20 [INFO] consul: adding LAN server h104 (Addr: 192.168.100.104:8300) (DC: dc1)
2016/03/18 17:07:20 [INFO] consul: adding WAN server h104.dc1 (Addr: 192.168.100.104:8300) (DC: dc1)
2016/03/18 17:07:20 [ERR] agent: failed to sync remote state: No cluster leader
2016/03/18 17:07:22 [WARN] raft: Heartbeat timeout reached, starting election
2016/03/18 17:07:22 [INFO] raft: Node at 192.168.100.104:8300 [Candidate] entering Candidate state
2016/03/18 17:07:22 [DEBUG] raft: Votes needed: 1
2016/03/18 17:07:22 [DEBUG] raft: Vote granted from 192.168.100.104:8300. Tally: 1
2016/03/18 17:07:22 [INFO] raft: Election won. Tally: 1
2016/03/18 17:07:22 [INFO] raft: Node at 192.168.100.104:8300 [Leader] entering Leader state
2016/03/18 17:07:22 [INFO] raft: Disabling EnableSingleNode (bootstrap)
2016/03/18 17:07:22 [DEBUG] raft: Node 192.168.100.104:8300 updated peer set (2): [192.168.100.104:8300]
2016/03/18 17:07:22 [INFO] consul: cluster leadership acquired
2016/03/18 17:07:22 [DEBUG] consul: reset tombstone GC to index 2
2016/03/18 17:07:22 [INFO] consul: member 'h104' joined, marking health alive
2016/03/18 17:07:22 [INFO] consul: New leader elected: h104
2016/03/18 17:07:25 [INFO] agent: Synced service 'consul'
2016/03/18 17:07:25 [INFO] agent: Synced service 'web'
2016/03/18 17:08:44 [DEBUG] dns: request for {h104.node.consul. 1 1} (396.33µs) from client 127.0.0.1:48961 (udp)
2016/03/18 17:09:15 [DEBUG] agent: Service 'consul' in sync
2016/03/18 17:09:15 [DEBUG] agent: Service 'web' in sync
...
...
...输出中表示 Synced service ‘web’，说明定义的服务已经成功被注册进来了，如果要以配置文件的形式注册更多的服务，可以在配置目录中添加其它的服务定义
