docker (centOS 7) 使用笔记3
近日在使用VPN时发现和docker的虚拟网址发生了冲突，都是172.17.0.1，故需要修改docker的默认网址。1. 当前状态
# ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST>mtu 1500
inet 172.17.0.1netmask 255.255.0.0broadcast 0.0.0.0
ether 02:42:18:22:59:cdtxqueuelen 0(Ethernet)
RX packets 0bytes 0 (0.0 B)
RX errors 0dropped 0overruns 0frame 0
TX packets 0bytes 0 (0.0 B)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
2. 安装bridge网络工具
yum -y install bridge-utils
安装后，查看网桥列表
# brctl show
bridge name bridge id STP enabled interfaces
docker0 8000.0242182259cd no
3. 停止、删除网桥docker0
停止：
ip link set dev docker0 down
删除：
brctl delbr docker0
删除成功后，查看：
# brctl show
bridge name bridge id STP enabled interfaces
4. 创建新的网桥
# brctl addbr bridge0
5. 设置网桥IP
ip addr add 192.168.0.1/24 dev bridge0
6. 启动网桥
ip link set dev bridge0 up
启动成功后，查看：
# brctl show
bridge name bridge id STP enabled interfaces
bridge0 8000.000000000000 no
# ifconfig
bridge0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>mtu 1500
inet 192.168.0.1netmask 255.255.255.0broadcast 0.0.0.0
ether ca:ed:3e:52:f1:eetxqueuelen 1000(Ethernet)
RX packets 0bytes 0 (0.0 B)
RX errors 0dropped 0overruns 0frame 0
TX packets 0bytes 0 (0.0 B)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
7.修改docker启动设置
/etc/systemd/system/multi-user.target.wants/docker.service
ExecStart=/usr/bin/dockerd -b bridge0
添加选项 -b bridge0
8. 重启docker服务
systemctl daemon-reload
systemctl restart docker
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