centos修改docker网络配置方法分享

#停止docker服务器，并删除docker0网卡
sudo systemctl restart docker
sudo ip link set dev docker0 down
sudo brctl delbr docker0

# 创建自定义bridge0网络，网段为10.255.254.1/24
sudo brctl addbr bridge0
sudo ip addr add 10.255.254.1/24 dev bridge0
sudo ip link set dev bridge0 up
#sudo ip link set dev bridge0 down ; sudo brctl delbr bridge0

# 确认网卡已经运行
ip addr show bridge0

# 创建docker运行的配置文件（如果文件夹不存在，手工创建）
sudo mkdir /etc/systemd/system/docker.service.d
sudo vi /etc/systemd/system/docker.service.d/docker.conf##输入如下内容

echo "[Service]
EnvironmentFile=-/etc/sysconfig/docker
ExecStart=
ExecStart=/usr/bin/dockerd $OPTIONS \
   $DOCKER_STORAGE_OPTIONS \
   $DOCKER_NETWORK_OPTIONS \
   $BLOCK_REGISTRY \
   $INSECURE_REGISTRY" > /etc/systemd/system/docker.service.d/docker.conf


# 修改docker服务启动默认绑定网卡为bridge0
echo 'DOCKER_NETWORK_OPTIONS="-b=bridge0"' >> /etc/sysconfig/docker

sudo systemctl daemon-reload

sudo systemctl restart docker