[root@centos-node4 ~]# docker service ls
ID NAME REPLICAS IMAGE COMMAND
5lgdq3ihiez0 helloworld 0/2 alpine ping docker.com
[root@centos-node4 ~]# docker service tasks helloworld
ID NAME SERVICE IMAGE LAST STATE DESIRED STATE NODE
eul3bus45qz3b555wekotdmo5 helloworld.1 helloworld alpine Running 14 seconds Running centos-node5
55uhq6xxcv53xlkqv2f0be9b9 helloworld.2 helloworld alpine Running 14 seconds Running centos-node4
可以看到两个实例分别运行在两个节点上
测试两个主机的网络是否能互通
分别查看两个实例的名称
# 在swarm-manager 上执行
[root@centos-node4 ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
f4a197abdb0b alpine:latest "ping docker.com" 42 minutes ago Up 42 minutes helloworld.2.55uhq6xxcv53xlkqv2f0be9b9# 在swarm-agnet1 上执行
[root@centos-node5 ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
39cc35cd54b5 alpine:latest "ping docker.com" 50 seconds ago Up 49 seconds helloworld.1.eul3bus45qz3b555wekotdmo5
在swarm-manager 上测试
[root@centos-node4 ~]# docker exec -ti helloworld.2.55uhq6xxcv53xlkqv2f0be9b9 sh
/ # ping helloworld.1.eul3bus45qz3b555wekotdmo5
PING helloworld.1.eul3bus45qz3b555wekotdmo5 (10.0.9.3): 56 data bytes
64 bytes from 10.0.9.3: seq=0 ttl=64 time=0.514 ms
64 bytes from 10.0.9.3: seq=1 ttl=64 time=0.508 ms
64 bytes from 10.0.9.3: seq=2 ttl=64 time=0.381 ms
64 bytes from 10.0.9.3: seq=3 ttl=64 time=0.408 ms
^C
--- helloworld.1.eul3bus45qz3b555wekotdmo5 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 0.381/0.452/0.514 ms在swarm-agent1 上测试
[root@centos-node5 ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
39cc35cd54b5 alpine:latest "ping docker.com" 50 seconds ago Up 49 seconds helloworld.1.eul3bus45qz3b555wekotdmo5
[root@centos-node5 ~]# docker exec -ti helloworld.1.eul3bus45qz3b555wekotdmo5 sh
/ # ping helloworld.2.55uhq6xxcv53xlkqv2f0be9b9
PING helloworld.2.55uhq6xxcv53xlkqv2f0be9b9 (10.0.9.4): 56 data bytes
64 bytes from 10.0.9.4: seq=0 ttl=64 time=0.892 ms
64 bytes from 10.0.9.4: seq=1 ttl=64 time=0.463 ms
64 bytes from 10.0.9.4: seq=2 ttl=64 time=0.462 ms
64 bytes from 10.0.9.4: seq=3 ttl=64 time=0.478 ms
64 bytes from 10.0.9.4: seq=4 ttl=64 time=0.468 ms
64 bytes from 10.0.9.4: seq=5 ttl=64 time=0.459 ms
^C
--- helloworld.2.55uhq6xxcv53xlkqv2f0be9b9 ping statistics ---
6 packets transmitted, 6 packets received, 0% packet loss
