centos7 docker配置桥接，与容器网络互联

环境：

[root@localhost ~]# cat /etc/redhat-release 
CentOS Linux release 7.7.1908 (Core)

[root@localhost ~]# uname -r
3.10.0-1062.el7.x86_64

[root@localhost ~]# ifconfig 
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.111  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::13c3:5f21:11b7:51c5  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:bf:81:71  txqueuelen 1000  (Ethernet)
        RX packets 80  bytes 9527 (9.3 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 90  bytes 12443 (12.1 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        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

安装配置

执行下面命令，可以直接放在脚本中运行，这里的网卡是ens33

#!/bin/bash
#by auth toyix
#2020年8月7日 11:51:54
#auto install config docker bridge 
##########################################
#安装基础环境
yum install docker* -y
yum install bridge-utils -y
systemctl start docker
systemctl stop docker
 
#停止及删除docker0网桥
ifconfig docker0 down
brctl delbr docker0
#查看网桥信息
brctl show
 
#改ens33网卡配置文件
cd /etc/sysconfig/network-scripts/
cat>ifcfg-ens33 <<-EOF 
	DEVICE=ens33
	BOOTPROTO=none
	NM_CONTROLLED=no
	ONBOOT=yes
	TYPE=Ethernet
	BRIDGE="br0"
	IPADDR=192.168.1.111
	NETMASK=255.255.255.0
	GATEWAY=192.168.1.1
	USERCTL=no
EOF

#创建桥接网卡br0配置文件
cat>ifcfg-br0 <<-EOF
	DEVICE="br0" 
	BOOTPROTO=none
	IPV6INIT=no
	NM_CONTROLLED=no
	ONBOOT=yes
	TYPE="Bridge"
	IPADDR=192.168.1.111
	NETMASK=255.255.255.0
	GATEWAY=192.168.1.1
	USERCTL=no
EOF

#docker启用br0设置
cat>/etc/sysconfig/docker-network <<-EOF
	# /etc/sysconfig/docker-network
	DOCKER_NETWORK_OPTIONS="-b=br0"
EOF

#备份DNS文件
cp /etc/resolv.conf{
   
   ,.bak}
cat /etc/resolv.conf

#git下载pipework
git clone https://github.com/jpetazzo/pipework
\cp pipework/pipework /usr/local/bin/

#网络重启dns归还
/etc/init.d/network restart
\cp /etc/resolv.conf.bak /etc/resolv.conf

#启动docker服务，查看服务是否启动
systemctl start docker
ps -ef|grep docker

执行结果

Cloning into 'pipework'...
remote: Enumerating objects: 8, done.
remote: Counting objects: 100% (8/8), done.
remote: Compressing objects: 100