CentOS 6.x上为Docker容器配置物理网段的静态IP

虚拟机安装centos6.5(ip范围从192.168.150.130-255，虚拟机网关192.168.150.2)

实验步骤:

0.停止docker:
service docker stop

1.安装brctl
yum install bridge-utils

2.配置桥接接口

brctl addbr br0

brctl addif br0 eth0

3.这是br0的配置文件ifcfg-br0:

vim /etc/sysconfig/network-script/ifcfg-br0（可复制ifcfg-eth0）

4.这是eth0的配置文件ifcfg-eth0:

vim /etc/sysconfig/network-script/ifcfg-eth0

5.重启网络:
service network restart
ip addr

ifcofnig

6.配置Docker使用br0

1
2
3

ip link set dev docker0 down`
brctl delbr docker0
iptables -t nat -F POSTROUTING

7.修改docker变量使用br0:

vim /etc/sysconfig/docker
other_args="-b=br0"

8.启动docker:service docker start
查看 iptables是否正常：
iptables -t nat -L -n

9.启动docker容器并设置ip:
启动docker容器：

1	docker run -ti --name docker1 --net=none --rm -v /usr/local/nginx/html:/usr/share/nginx/html:ro nginx:V4 /bin/bash

docker attach

查看ip addr 只有一个lo

10.在宿主机上执行如下脚本格式如下：脚本容器id 容器ip 子网掩码网关网络通道名

1	./docker-staticIP.sh e4cbb0f311a7 192.168.150.145 24 192.168.150.2 veth2

脚本如下：

#/bin/bash
if [ -z $1 ] || [ -z $2 ] || [ -z $3 ] || [ -z $4 ] || [ -z $5 ];
then
  echo "*****Input the necessary parameters: CONTAINERID IP MASK GATEWAY ETHNAME"
  echo "*****Call the script like: sh manual_con_static_ip.sh b0e18b6a4432 192.168.5.123 24 192.168.5.1 deth0"
  exit
fi
CONTAINERID=$1
SETIP=$2
SETMASK=$3
GATEWAY=$4
ETHNAME=$5
#判断宿主机网卡是否存在
ifconfig $ETHNAME > /dev/null 2>&1
if [ $? -eq 0 ]; then
  read -p "$ETHNAME exist,do you want delelte it? y/n " del
  if [[ $del == 'y' ]]; then
  ip link del $ETHNAME
  else
  exit
  fi
fi
pid=`docker inspect -f '{{.State.Pid}}' $CONTAINERID`
mkdir -p /var/run/netns
find -L /var/run/netns -type l -delete
if [ -f /var/run/netns/$pid ]; then
  rm -f /var/run/netns/$pid
fi
ln -s /proc/$pid/ns/net /var/run/netns/$pid
ip link add $ETHNAME type veth peer name B
brctl addif br3 $ETHNAME
ip link set $ETHNAME up
ip link set B netns $pid
#先删除容器内已存在的eth0
ip netns exec $pid ip link del eth0 > /dev/null 2>&1
#设置容器新的网卡eth0
ip netns exec $pid ip link set dev B name eth0
ip netns exec $pid ip link set eth0 up
ip netns exec $pid ip addr add $SETIP/$SETMASK dev eth0
ip netns exec $pid ip route add default via $GATEWAY

11.在容器中ip addr就多一个eth0网络

12.在宿主机中查看ip addr 也多了一个veth2

13.游览器中访问容器的nginx,显示成功且容器中打印日志

14.测试时遇到如下问题：

解决办法：安装最新版的iproute:

1 2	wget https://repos.fedorapeople.org/openstack/EOL/openstack-grizzly/epel-6/iproute-2.6.32-130.el6ost.netns.2.x86_64.rpm rpm -ivh --replacefiles ./iproute-2.6.32-130.el6ost.netns.2.x86_64.rpm

参考文章:

http://chenyang.me/2015/09/09/CentOS%206.x%E4%B8%8A%E4%B8%BADocker%E5%AE%B9%E5%99%A8%E9%85%8D%E7%BD%AE%E7%89%A9%E7%90%86%E7%BD%91%E6%AE%B5%E7%9A%84%E9%9D%99%E6%80%81IP/

实验步骤:

参考文章:

转载请注明原作者: 周淑科(https://izsk.me)