查看docker网络

docker network ls

[ ~]# docker network ls
NETWORK ID          NAME                DRIVER              SCOPE
e9ecd3b9be87        bridge              bridge              local
45336895a3a4        host                host                local
6a44e8330adb        none                null                local

创建网桥

docker network create bridge my-bridge

[ ~]# docker network create -d bridge my-bridge
0ae59991f86c3276acfc5a78dd316f47c124f093e60ce719046f1045ccccb1bd
[ ~]# docker network ls
NETWORK ID          NAME                DRIVER              SCOPE
e9ecd3b9be87        bridge              bridge              local
45336895a3a4        host                host                local
0ae59991f86c        my-bridge           bridge              local
6a44e8330adb        none                null                local

将两个容器加入此网桥

docker network connect my-bridge centos-test-1
docker network connect my-bridge centos-test-2

[ ~]# docker network connect my-bridge centos-test-1
[ ~]# docker network connect my-bridge centos-test-2

容器内可相互通过容器名进行通信

[ ~]# docker exec -it centos-test-1 bash
[ /]# ping centos-test-2
PING centos-test-2 (172.18.0.3) 56(84) bytes of data.
64 bytes from centos-test-2.my-bridge (172.18.0.3): icmp_seq=1 ttl=64 time=0.131 ms
64 bytes from centos-test-2.my-bridge (172.18.0.3): icmp_seq=2 ttl=64 time=0.163 ms
^C
--- centos-test-2 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.131/0.147/0.163/0.016 ms

[ ~]# docker exec -it centos-test-2 bash
[ /]#  ping centos-test-1
PING centos-test-1 (172.18.0.2) 56(84) bytes of data.
64 bytes from centos-test-1.my-bridge (172.18.0.2): icmp_seq=1 ttl=64 time=0.187 ms
64 bytes from centos-test-1.my-bridge (172.18.0.2): icmp_seq=2 ttl=64 time=0.405 ms
64 bytes from centos-test-1.my-bridge (172.18.0.2): icmp_seq=3 ttl=64 time=0.150 ms
^C
--- centos-test-1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 4ms
rtt min/avg/max/mdev = 0.150/0.247/0.405/0.113 ms