修改docker自定义网桥后的默认网卡名称

[root@docker2 ~]# docker  network   create  --subnet=10.10.10.0/24  docker1   #新键网桥docker1
42323044a4f88a8766d9367e150b9f630cf61f2dd2d9f2d81fad1dc787edac68

[root@docker2 ~]# ifconfig  #使用ifconfig查看网卡名称,发现不是docker1,而是以br开头的字符串
br-42323044a4f8: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500 
        inet 10.10.10.1  netmask 255.255.255.0  broadcast 0.0.0.0
        ether 02:42:e3:1f:eb:b6  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

我们可以通过如下几步修改网卡名称:

1.[root@docker2 ~]# docker network list
NETWORK ID          NAME                DRIVER              SCOPE
20d5d1508381        bridge              bridge              local

42323044a4f8       docker1            bridge              local    
2b94069ca87d        host                host                local               
5eccab8d02af        none                null                local

2.查看系统默认docker0(20d5d1508381)的底层信息

[root@docker2 ~]# docker netwrok inspect 20d5d1508381

......

}
        },
        "Options": {
            "com.docker.network.bridge.default_bridge": "true",
            "com.docker.network.bridge.enable_icc": "true",
            "com.docker.network.bridge.enable_ip_masquerade": "true",
            "com.docker.network.bridge.host_binding_ipv4": "0.0.0.0",
            "com.docker.network.bridge.name": "docker0",                  #注意这个命令行
            "com.docker.network.driver.mtu": "1500"
        },
        "Labels": {}
    }
]
3.  删除网桥

[root@docker2 ~]# docker network rm docker1  
    docker1
4.重新创建网桥

[root@docker2 ~]# docker network create docker1 -o com.docker.network.bridge.name=docker1 
   bd9fb699dcda7f2fb8aaa3ed49d63e8ad6ffdbd0146f9fe991b50ecf4a32e8f9
5.使用ifconfig查看,可以看到网卡名称为docker1
   [root@docker2 ~]# ifconfig
docker0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 0.0.0.0
        ether 02:42:3b:3d:b8:a1  txqueuelen 0  (Ethernet)
        RX packets 41  bytes 3113 (3.0 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 23  bytes 1650 (1.6 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
docker1: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.18.0.1  netmask 255.255.0.0  broadcast 0.0.0.0
        ether 02:42:cf:ee:d3:6f  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

6.如果想在创建网桥的时候,自定网段,可执行如下命令:

[root@docker2 ~]# docker network create docker02 --subnet=172.30.0.0/16 -o com.docker.network.bridge.name=docker02
    929023f79e25a03ed5fd99150ab354555ce5088bd90f4f1a06ed7a3be4cc4cde
    [root@docker2 ~]# ifconfig docker02
docker02: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.30.0.1  netmask 255.255.0.0  broadcast 0.0.0.0
        ether 02:42:61:44:57:54  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

结束.