[系统运维]Docker学习(24)——网络连通

（1）安装两个tomcat容器

[root@localhost ~]# docker run -d -P --name tomcat01 tomcat
[root@localhost ~]# docker run -d -P --name tomcat02 tomcat
[root@localhost ~]# docker ps 
CONTAINER ID   IMAGE     COMMAND             CREATED      STATUS          PORTS                                         NAMES
1973b025df8f   tomcat    "catalina.sh run"   2 days ago   Up 35 minutes   0.0.0.0:49154->8080/tcp, :::49154->8080/tcp   tomcat02
cabdc1bbda8e   tomcat    "catalina.sh run"   2 days ago   Up 35 minutes   0.0.0.0:49153->8080/tcp, :::49153->8080/tcp   tomcat01
[root@localhost ~]# 

（2）tomcat01尝试连接tomcat02

[root@localhost ~]# docker exec -it tomcat01 ping tomcat02
ping: tomcat02: Name or service not known
[root@localhost ~]# 

（3）网络连通-------docker connect命令

[root@localhost ~]# docker network connect dong_net tomcat01
[root@localhost ~]# docker network connect dong_net tomcat02
[root@localhost ~]# docker exec -it tomcat01 ping tomcat02
PING tomcat02 (192.168.0.3) 56(84) bytes of data.
64 bytes from tomcat02.dong_net (192.168.0.3): icmp_seq=1 ttl=64 time=0.111 ms
64 bytes from tomcat02.dong_net (192.168.0.3): icmp_seq=2 ttl=64 time=0.070 ms
...
[root@localhost ~]# 

?说明:

dong_net为自定义的网络。