Docker 网络命令详解

"Scope": "local",
"Driver": "bridge",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": {},
"Config": [
{
"Subnet": "172.25.0.0/16"
}
] },
"Internal": false,
"Containers": {
"e9bce535ae32945f5e43340facdb6c16c93d92119e85b61c6cb7a5379a0caf63": {
"Name": "container2",
"EndpointID": "ef7244d32484407c3ec4aa30b7bdb0a6cbe3dbbfedc03e5c856ad20a08af172f",
"MacAddress": "02:42:ac:19:00:02",
"IPv4Address": "172.25.0.2/16",
"IPv6Address": ""
}
},
"Options": {},
"Labels": {}
}

注意container2，自动分配到了IP地址。此时container1,仍然连接在默认的bridge网络。

4.启动第三个container，但是这是使用–ip 选项指定它的IP地址，

zane@zane-V:~$ docker run --network=isolated_nw --ip=172.25.3.3 -itd --name=container3 busybox

5.检查container3使用的是哪个网络：

 "Networks": {
    "isolated_nw": {
     "IPAMConfig": {
      "IPv4Address": "172.25.3.3"
     },
     "Links": null,
     "Aliases": [
      "adf68dd9e09c"
     ],
     "NetworkID": "a8208641505d2d8fc37bf7cbd1027c01f0def461815786e076ef4ae65b7b2f9b",
     "EndpointID": "71d5d272d056b6111a83f0843a10d1944f1648f34d5099258d5865d053a939b0",
     "Gateway": "172.25.0.1",
     "IPAddress": "172.25.3.3",
     "IPPrefixLen": 16,
     "IPv6Gateway": "",
     "GlobalIPv6Address": "",
     "GlobalIPv6PrefixLen": 0,
     "MacAddress": "02:42:ac:19:03:03"
    }
   }
  }

6.检查container2使用的是哪个网络：

"Networks": {
    "isolated_nw": {
     "Aliases": [
      "e9bce535ae32"
     ],
     "EndpointID": "ef7244d32484407c3ec4aa30b7bdb0a6cbe3dbbfedc03e5c856ad20a08af172f",
     "Gateway": "172.25.0.1",
     "GlobalIPv6Address": "",
     "GlobalIPv6PrefixLen": 0,
     "IPAMConfig": {},
     "IPAddress": "172.25.0.2",
     "IPPrefixLen": 16,
     "IPv6Gateway": "",
     "Links": null,
     "MacAddress": "02:42:ac:19:00:02",
     "NetworkID": "a8208641505d2d8fc37bf7cbd1027c01f0def461815786e076ef4ae65b7b2f9b"
    }
   },

注意:container2 在两个网络中间，它加入了默认bridge网络，当你在创建它的时候，然后又连接它到了isolation_nw.

一个容器可以连接到多个网络中

7.使用docker attach 命令连接一个正在运行的容器，然后查看

zane@zane-V:~$ docker attach container2
/ # ifconfig -a
eth1  Link encap:Ethernet HWaddr 02:42:AC:19:00:02								 
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