启动第二个节点
代码语言：javascript复制[root@docker consul]# consul agent -data-dir /tmp/consul -node=a2 -bind=192.168.100.103 -config-dir /etc/consul.d
==> Starting Consul agent...
==> Starting Consul agent RPC...
==> Consul agent running!
Node name: 'a2'
Datacenter: 'dc1'
Server: false (bootstrap: false)
Client Addr: 127.0.0.1 (HTTP: 8500, HTTPS: -1, DNS: 8600, RPC: 8400)
Cluster Addr: 192.168.100.103 (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 21:51:55 [INFO] serf: EventMemberJoin: a2 192.168.100.103
2016/03/18 21:51:55 [ERR] agent: failed to sync remote state: No known Consul servers
2016/03/18 21:52:17 [ERR] agent: failed to sync remote state: No known Consul servers
2016/03/18 21:52:22 [INFO] agent.rpc: Accepted client: 127.0.0.1:42288
2016/03/18 21:52:38 [ERR] agent: failed to sync remote state: No known Consul servers
...
...
...此时已经分别在104和103上启动了两个代理a1和a2，a1准备用来作server ，a2用来作client，但它们彼此还互不认识，都是自己的单节点集群中的唯一节点，可以通过 consul members 来进行查看
[root@h104 consul]# consul members
Node Address Status Type Build Protocol DC
a1 192.168.100.104:8301 alive server 0.6.4 2 dc1
[root@h104 consul]#
----------
[root@docker ~]# consul members
Node Address Status Type Build Protocol DC
a2 192.168.100.103:8301 alive client 0.6.4 2 dc1
[root@docker ~]# 加入集群
使用a1来加入a2
代码语言：javascript复制[root@h104 consul]# consul join 192.168.100.103
Successfully joined cluster by contacting 1 nodes.
[root@h104 consul]# 代码语言：javascript复制Note: 要确保两个节点TCP或UDP的8301是开放的，最好是TCP和UDP都开放，因为节点间的通讯得依赖这个端口，否则无法加入
[root@h104 consul]# consul join 192.168.100.103
Error joining the cluster: dial tcp 192.168.100.103:8301: getsockopt: no route to host
[root@h104 consul]# 代码语言：javascript复制Tip: 防火墙端口打开方法：在Centos7中使用 firewall-cmd 来管理防火墙
[root@h104 consul]# firewall-cmd --list-all
public (default, active)
interfaces: eno16777736 eno33554960
sources:
services: dhcpv6-client ssh
ports: 3306/tcp 80/tcp 40000/tcp 8080/tcp
masquerade: no
forward-ports:
icmp-blocks:
rich rules:
[root@h104 consul]# firewall-cmd --add-port=8301/tcp
success
[root@h104 consul]# firewall-cmd --list-all
public (default, active)
interfaces: eno16777736 eno33554960
sources:
services: dhcpv6-client ssh
ports: 3306/tcp 80/tcp 40000/tcp 8080/tcp 8301/tcp
masquerade: no
forward-ports:
icmp-blocks:
rich rules:
[root@h104 consul]# consul join 192.168.100.103
Successfully joined cluster by contacting 1 nodes.
[root@h104 consul]# 
