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小知识：Docker容器的网络管理和网络隔离的实现

一、Docker网络的管理

1、Docker容器的方式

1）Docker访问外网

Docker容器连接到宿主机的Docker0网桥访问外网；默认自动将docker0网桥添加到docker容器中。

2）容器和容器之间通信

需要管理员创建网桥；将不同的容器连接到网桥上实现容器和容器之间相互访问。

3）外部网络访问容器

通过端口映射或者同步docker宿主机网络配置实现通信。

2、Docker容器网络通信的模式

1）bridge

默认容器访问外网通信使用；依赖docker0网桥。

2）none

需要给容器创建独立的网络命名空间；不会给创建的容器配置TCP/IP信息。

3）container

容器和容器通信使用；容器需要共享容器名称空间，通过共享容器名称空间实现不同容器通信。

4）host

容器内部网络和宿主机保持同步。

3、配置bridge网络通信模式

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[root@centos01 yum.repos.d]# wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
<!–安装centos7源–>
[root@centos01 ~]# yum -y install docker   <!–安装docker–>
[root@centos01 ~]# systemctl start docker    <!–启动docker–>
[root@centos01 ~]# systemctl enable docker   <!–设置docker开机自动启动–>
[root@centos01 ~]# echo “net.ipv4.ip_forward = 1” >> /etc/sysctl.conf  <!–开启路由功能–>
[root@centos01 ~]# sysctl -p <!–刷新配置–>
net.ipv4.ip_forward = 1
[root@centos01 ~]# docker pull hub.c.163.com/public/centos:7.2-tools <!–下载镜像–>
[root@centos01 ~]# docker images <!–查看镜像–>
REPOSITORY          TAG         IMAGE ID      CREATED       SIZE
hub.c.163.com/public/centos  7.2-tools      4a4618db62b9    3 years ago     515 MB
[root@centos01 ~]# docker run -d –net=bridge –name centos7.201 hub.c.163.com/public/centos:7.2-tools 
<!–配置创建的容器桥接网络通信，容器访问互联网使用–>
b308fb5c097fd455073f2f4a280d2660e6943fe1a62d6409e8ebcd3b86469438
[root@centos01 ~]# docker ps <!–查看运行的容器–>
CONTAINER ID    IMAGE                  COMMAND         CREATED       STATUS       PORTS        NAMES
b308fb5c097f    hub.c.163.com/public/centos:7.2-tools  “/usr/bin/supervisord”  20 seconds ago   Up 19 seconds    22/tcp       centos7.201
[root@centos01 ~]# ifconfig  <!–查看Docker宿主机IP地址信息–>
docker0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 0.0.0.0
[root@centos01 ~]# docker exec -it centos7.201 /bin/bash <!–登录centos7.201容器–>
[root@b308fb5c097f /]# ifconfig  <!–查看IP地址–>
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.17.0.2 netmask 255.255.0.0 broadcast 0.0.0.0
[root@b308fb5c097f /]# ping www.baidu.com <!–centos7.201容器ping公网测试–>
PING www.a.shifen.com (39.156.66.18) 56(84) bytes of data.
64 bytes from 39.156.66.18: icmp_seq=1 ttl=50 time=18.4 ms
64 bytes from 39.156.66.18: icmp_seq=2 ttl=50 time=18.3 ms
64 bytes from 39.156.66.18: icmp_seq=3 ttl=50 time=16.9 ms
[root@b308fb5c097f /]# ping 192.168.100.10  <!–ping宿主机IP测试 –>
PING 192.168.100.10 (192.168.100.10) 56(84) bytes of data.
64 bytes from 192.168.100.10: icmp_seq=1 ttl=64 time=0.043 ms
64 bytes from 192.168.100.10: icmp_seq=2 ttl=64 time=0.086 ms
64 bytes from 192.168.100.10: icmp_seq=3 ttl=64 time=0.150 ms

4、配置none网络通信模式

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[root@centos01 ~]# docker run -d –net=none –name centos7.202 hub.c.163.com/public/centos:7.2-tools 
<!–配置docker容器不需要连接到网络，容器无法通信–>
e2c4837d67818e7ef4d7cedf964db21d98cabb594d12091d7f69da4e8fb3f30f
[root@centos01 ~]# docker ps <!–查看运行的容器–>
CONTAINER ID    IMAGE                  COMMAND         CREATED       STATUS       PORTS        NAMES
e2c4837d6781    hub.c.163.com/public/centos:7.2-tools  “/usr/bin/supervisord”  57 seconds ago   Up 56 seconds              centos7.202
b308fb5c097f    hub.c.163.com/public/centos:7.2-tools  “/usr/bin/supervisord”  7 minutes ago    Up 7 minutes    22/tcp       centos7.201
[root@centos01 ~]# docker exec -it centos7.202 /bin/bash <!–登录centos7.202容器–>
[root@e2c4837d6781 /]# ifconfig  <!–查看IP地址–>
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
[root@e2c4837d6781 /]# ping www.baidu.com <!–ping公网发现是不通的–>
ping: unknown host www.baidu.com
[root@e2c4837d6781 /]#
[root@e2c4837d6781 /]# ping 192.168.100.10 <!–ping宿主机IP地址发现是不通的–>
connect: Network is unreachable

5、配置host网络通信模式

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[root@centos01 ~]# docker run -d –net=host –name centos7.203 -v /data1 hub.c.163.com/public/centos:7.2-tools 
<!–配置运行的容器和宿主机网络保持同步–>
2911358be486720c4ee93c8de22cd77301236f48c5baf22ea63bb3c54450032e
[root@centos01 ~]# ls /var/lib/docker/volumes/ <!–查看创建的数据卷–>
dc755f3b6036f167471435629918d06264e1c2c6a8b175426fa80da36143a87e metadata.db
[root@centos01 ~]# docker ps <!–查看运行的容器–>
CONTAINER ID    IMAGE                  COMMAND         CREATED       STATUS       PORTS        NAMES
2911358be486    hub.c.163.com/public/centos:7.2-tools  “/usr/bin/supervisord”  About a minute ago  Up About a minute            centos7.203
e2c4837d6781    hub.c.163.com/public/centos:7.2-tools  “/usr/bin/supervisord”  15 minutes ago    Up 15 minutes              centos7.202
b308fb5c097f    hub.c.163.com/public/centos:7.2-tools  “/usr/bin/supervisord”  21 minutes ago    Up 21 minutes    22/tcp       centos7.201
[root@centos01 ~]# docker exec -it centos7.203 /bin/bash <!–登录到centos7.203容器–>
[root@centos01 /]# ifconfig  <!–查看IP地址–>
docker0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 0.0.0.0
ens32: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.100.10 netmask 255.255.255.0 broadcast 192.168.100.255
ens34: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.126 netmask 255.255.255.0 broadcast 192.168.0.255
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
vethc39178a: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::7c4b:a6ff:fe1c:a37f prefixlen 64 scopeid 0x20<link>
virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
[root@centos01 ~]# docker exec -it centos7.203 /bin/bash  <!–登录centos7.203容器–>
[root@centos01 /]# ping www.baidu.com  <!–ping公网测试–>
PING www.a.shifen.com (39.156.66.14) 56(84) bytes of data.
64 bytes from 39.156.66.14: icmp_seq=1 ttl=51 time=20.0 ms
64 bytes from 39.156.66.14: icmp_seq=2 ttl=51 time=19.1 ms
64 bytes from 39.156.66.14: icmp_seq=3 ttl=51 time=15.9 ms
[root@centos01 /]# ping 192.168.100.10  <!–ping宿主机IP地址测试–>
PING 192.168.100.10 (192.168.100.10) 56(84) bytes of data.
64 bytes from 192.168.100.10: icmp_seq=1 ttl=64 time=0.020 ms
64 bytes from 192.168.100.10: icmp_seq=2 ttl=64 time=0.060 ms
64 bytes from 192.168.100.10: icmp_seq=3 ttl=64 time=0.030 ms
<!—Centos7.203容器安装Nginx–>
[root@centos01 ~]# cp /mnt/nginx-1.6.0.tar.gz ./  <!–拷贝Nginx压缩包–>
[root@centos01 ~]# ls
anaconda-ks.cfg initial-setup-ks.cfg nginx-1.6.0.tar.gz
[root@centos01 ~]# cp nginx-1.6.0.tar.gz /var/lib/docker/volumes/dc755f3b6036f167471435629918d06264e1c2c6a8b175426fa80da36143a87e/_data/
<!–将Nginx压缩包通过数据卷共享到centos7.203容器–>
[root@centos01 ~]# docker exec -it centos7.203 /bin/bash  <!–登录到centos7.203容器–>
[root@centos01 /]# ls
anaconda-post.log bin data1 dev etc home lib lib64 lost+found media mnt opt proc root run sbin srv sys tmp usr var
[root@centos01 /]# cd data1/  <!–查看宿主机共享的数据–>
[root@centos01 data1]# ls 
nginx-1.6.0.tar.gz
[root@centos01 /]# yum -y install pcre-devel zlib-devel  <!–安装Nginx依赖程序–>
[root@centos01 /]# useradd -M -s /sbin/nologin nginx  <!–创建管理Nginx用户–>
[root@centos01 /]# tar zxvf /data1/nginx-1.6.0.tar.gz -C /usr/src/  <!–解压缩Nginx包–>
[root@centos01 /]#yum -y install gcc pcre-devel zlib-devel make <!–先安装依赖–>
[root@centos01 /]# cd /usr/src/nginx-1.6.0/
[root@centos01 nginx-1.6.0]# ./configure –prefix=/usr/local/nginx –user=nginx –with-http_stub_status_module && make && make install 
<!–配置Nginx并 编译安装nginx–>
[root@centos01 nginx-1.6.0]# ln -s /usr/local/nginx/sbin/nginx /usr/local/sbin/ <!–优化Nginx执行命令–>
[root@centos01 nginx-1.6.0]# echo “www.docker.nginx.com” > /usr/local/nginx/html/index.html     
<!–修改Nginx网站主页内容–>
[root@centos01 nginx-1.6.0]# ln -s /usr/local/nginx/sbin/nginx /usr/local/sbin/
<!–在centos7.203容器中启动Nginx服务–>
[root@centos01 nginx-1.6.0]# netstat -anptu | grep nginx <!–监听Nginx服务端口号是否正在运行–>
tcp    0   0 0.0.0.0:80       0.0.0.0:*        LISTEN   6268/nginx: master
[root@centos01 ~]# curl http://192.168.100.10 <!–docker宿主机访问centos7.203容器中的nginx–>
www.docker.nginx.com
[root@centos01 nginx-1.6.0]# cat /usr/local/nginx/logs/access.log 
<!–查看centos7.203容器中成功访问Nginx的日志–>
192.168.100.10 – – [12/May/2020:21:42:47 +0800] “GET / HTTP/1.1” 200 21 “-” “curl/7.29.0”

6、配置docker0网卡参数

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[root@centos01 ~]# ifconfig  <!–查看docker宿主机IP地址–>
docker0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 0.0.0.0
[root@centos01 ~]# systemctl stop docker  <!–停止docker服务–>
[root@centos01 ~]# ip link set dev docker0 down  <!–停止docker0网桥–>
[root@centos01 ~]# brctl delbr docker0  <!–删除系统默认的docker0网桥–>
[root@centos01 ~]# brctl addbr docker0  <!–创建新的网桥，名字是docker0–>
[root@centos01 ~]# ip addr add 192.168.20.1/24 dev dokcer0 <!–新的网桥docker0配置IP地址–>
[root@centos01 ~]# ip link set dev docker0 up  <!–启动新的docker0网桥–>
[root@centos01 ~]# vim /etc/docker/daemon.json 
<!–修改docker配置文件加载新的网桥docker0–>
{“registry-mirrors”:[“https://6kx4zyno.mirror.aliyuncs.com”]}
{“bip”:”192.168.20.1/24″}  <!–加此行–>
[root@centos01 ~]# systemctl start docker  <!–启动docker服务–>
[root@centos01 ~]# ifconfig  <!–查看docker宿主机IP详细信息–>
docker0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.20.1 netmask 255.255.255.0 broadcast 0.0.0.0
[root@centos01 ~]# docker run -it -d –name centos7.2v1 hub.c.163.com/public/centos:7.2-tools  <!–创建一个容器在后台运行–>
d0b5392e60cef37f3c44d79a9fb73916720cfc44faa7b73862bee05fb2d6ce7b
[root@centos01 ~]# docker exec -it centos7.2v1 /bin/bash <!–登录centos7.2v1容器–>
[root@d0b5392e60ce /]# ifconfig  <!–查看IP地址详细信息–>
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.20.2 netmask 255.255.255.0 broadcast 0.0.0.0

二、Docker网络隔离

1、Docker网络隔离原理

需要管理创建网络空间名称；将不同的容器加载到不同的网络空间名称中实现隔离；默认不配置网络隔离默认给容器分配的docker0网络空间名称。

2、Docker容器自带的网络空间名称类型

bridge：容器桥接到docker0网桥上； host：容器同步docker宿主机的网络配置信息； none：不创建网络，docker容器不需要配置TCP/IP信息；

3、配置Docker网络名称空间隔离

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[root@centos01 ~]# docker network ls  <!–查看docker默认的网络名称空间–>
NETWORK ID     NAME        DRIVER       SCOPE
8bb953004416    bridge       bridge       local
2c18234cad82    host        host        local
67860e823c36    none        null        local
[root@centos01 ~]# docker network create -d bridge liyanxin <!–创建网络名称空间–>
0c69de4672ec173dc4c60b19e0bf93b361f45a804859f7bc2105d85ca83b1169
[root@centos01 ~]# docker network create -d bridge gongsunli  <!–创建网络名称空间–>
35687468c9034262173a96e9c23e045cbb8b7ffa6648fc84e015504740815001
[root@centos01 ~]# ifconfig  <!–查看docker宿主机网卡信息–>
br-0c69de4672ec: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.18.0.1 netmask 255.255.0.0 broadcast 0.0.0.0
br-35687468c903: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.19.0.1 netmask 255.255.0.0 broadcast 0.0.0.0
[root@centos01 ~]# docker run -it -d –name centos6.701 –network=liyanxin hub.c.163.com/public/centos:6.7-tools 
<!–创建运行的容器添加到liyanxin网络名称空间中隔离–>
b85a2d8419a98756369ddc3b78247d3d42c178e8e563a936fe973f2f6611f951
[root@centos01 ~]# docker exec -it centos6.701 /bin/bash  <!–登录centos6.701容器–>
[root@b85a2d8419a9 /]# ifconfig  <!–查看IP地址–>
eth0   Link encap:Ethernet HWaddr 02:42:AC:12:00:02
inet addr:172.18.0.2 Bcast:0.0.0.0 Mask:255.255.0.0
[root@centos01 ~]# docker run -it -d –name centos6.702 –network=gongsunli hub.c.163.com/public/centos:6.7-tools 
<!–创建运行的容器添加到gongsunli网络名称空间中隔离–>
9af0fb7b85af3270f3c7c44b62438f436b22289ac0a7604d6ed522604b7b185f
[root@centos01 ~]# docker exec -it centos6.702 /bin/bash <!–登录centos6.702容器–>
[root@9af0fb7b85af /]# ifconfig  <!–查看IP地址–>
eth0   Link encap:Ethernet HWaddr 02:42:AC:13:00:02
inet addr:172.19.0.2 Bcast:0.0.0.0 Mask:255.255.0.0

三、配置网桥实现网络隔离

1、配置网桥实现网络隔离的目的

实现Docker宿主机的容器跨Docker宿主机的容器通信使用。

2、配置网桥实现网络隔离原理 将物理网卡桥接到创建的网桥网卡上；给网桥网卡配置IP地址；创建容器加载网桥网卡实现；docker宿主机容器跨docker宿主机容器通信；管理员管理docker宿主机通过网桥网卡进行远程管理

3、配置docker网桥实现网络隔离

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[root@centos01 ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens32
<!–修改docker宿主机物理网卡桥接到网桥网卡br0–>
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
NAME=ens32
DEVICE=ens32
ONBOOT=yes
BRIDGE=br0  <!–添加此行–>
[root@centos01 ~]# cp /etc/sysconfig/network-scripts/ifcfg-ens32 /etc/sysconfig/network-scripts/ifcfg-br0 
<!–创建并生成br0网桥–>
[root@centos01 ~]# vim /etc/sysconfig/network-scripts/ifcfg-br0 <!–编辑br0网卡配置文件–>
TYPE=Bridge  <!–修改此行–>
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
NAME=br0   <!–修改名字–>
DEVICE=br0  <!–修改名字–>
ONBOOT=yes
IPADDR=192.168.100.10  <!–添加宿主机IP地址–>
NETMASK=255.255.255.0
[root@centos01 ~]# systemctl restart network  <!–重新启动docker宿主机网卡服务–>
[root@centos01 ~]# ifconfig  <!–查看docker宿主机网卡信息–>
br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.100.10 netmask 255.255.255.0 broadcast 192.168.100.255
br-0c69de4672ec: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.18.0.1 netmask 255.255.0.0 broadcast 0.0.0.0
br-35687468c903: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.19.0.1 netmask 255.255.0.0 broadcast 0.0.0.0
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 0.0.0.0
ens32: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether 00:0c:29:18:d3:26 txqueuelen 1000 (Ethernet)
ens34: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::4ad2:dd37:4341:5d8e prefixlen 64 scopeid 0x20<link>
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
veth7b0bb5f: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::ccd3:86ff:fee6:5725 prefixlen 64 scopeid 0x20<link>
veth7e0f471: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::684c:fdff:fe13:b436 prefixlen 64 scopeid 0x20<link>
virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
[root@centos01 ~]# yum -y install git  <!–docker宿主机安装git–>
[root@centos01 ~]# git clone https://github.com/jpetazzo/pipework
<!–下载docker容器网络管理工具pipework–>
[root@centos01 ~]# cp pipework/pipework /usr/local/bin/  <!–优化管理命令–>
[root@centos01 ~]# chmod +x /usr/local/bin/pipework  <!–添加执行权限–>
[root@centos01 ~]# docker run -d –name centos6.703 –network=none hub.c.163.com/public/centos:6.7-tools 
<!–通过镜像运行容器–>
adea0ad48bdde947ec595382d96cba06eb6522ec046e9b3c7bfcb1edb5c84545
[root@centos01 ~]# pipework br0 centos6.703 192.168.100.101/24 
<!–给centos6.703容器配置IP地址–>
[root@centos01 ~]# docker exec -it centos6.703 /bin/bash  <!–登录centos6.703容器–>
[root@adea0ad48bdd /]# ifconfig  <!–查看IP地址–>
eth1   Link encap:Ethernet HWaddr FA:3A:9D:ED:C0:FF
inet addr:192.168.100.101 Bcast:192.168.100.255 Mask:255.255.255.0
[root@adea0ad48bdd /]# ping 192.168.100.10
PING 192.168.100.10 (192.168.100.10) 56(84) bytes of data.
64 bytes from 192.168.100.10: icmp_seq=1 ttl=64 time=0.100 ms
64 bytes from 192.168.100.10: icmp_seq=2 ttl=64 time=0.097 ms
64 bytes from 192.168.100.10: icmp_seq=3 ttl=64 time=0.039 ms

4、配置docker宿主机容器和docker宿主机容器通信

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[root@centos02 ~]# ping www.baidu.com <!–再新开一台服务器，连接公网，安装docker–>
PING www.a.shifen.com (39.156.66.18) 56(84) bytes of data.
64 bytes from 39.156.66.18 (39.156.66.18): icmp_seq=1 ttl=51 time=19.5 ms
64 bytes from 39.156.66.18 (39.156.66.18): icmp_seq=2 ttl=51 time=17.3 ms
64 bytes from 39.156.66.18 (39.156.66.18): icmp_seq=3 ttl=51 time=18.1 ms
[root@centos02 ~]# cd /etc/yum.repos.d/
[root@centos02 yum.repos.d]# ls
local.repo
[root@centos02 yum.repos.d]# wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
<!–下载centos7源–>
[root@centos02 ~]# yum install docker -y  <!–安装docker–>
[root@centos02 ~]# systemctl start docker   <!–启动docker–>
[root@centos02 ~]# systemctl enable docker  <!–设置开机自动启动–>
[root@centos02 ~]# docker pull hub.c.163.com/public/centos:6.7-tools  <!–下载镜像–>
[root@centos02 ~]# docker images  <!–查看镜像–>
REPOSITORY          TAG         IMAGE ID      CREATED       SIZE
hub.c.163.com/public/centos  6.7-tools      b2ab0ed558bb    3 years ago     602 MB
[root@centos02 ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens32 
<!–修改docker宿主机网卡配置信息桥接到br0网卡 –>
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
NAME=ens32
DEVICE=ens32
ONBOOT=yes
BRIDGE=br0  <!–添加此行–>
[root@centos02 ~]# cp /etc/sysconfig/network-scripts/ifcfg-ens32 /etc/sysconfig/network-scripts/ifcfg-br0     <!–创建并生成br0网桥–>
[root@centos02 ~]# vim /etc/sysconfig/network-scripts/ifcfg-br0 <!–编辑br0网卡配置文件–>
TYPE=Bridge  <!–修改为Bridge–>
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
NAME=br0  <!–修改名字–>
DEVICE=br0  <!–修改为br0–>
ONBOOT=yes
IPADDR=192.168.100.20  <!–添加宿主机IP地址–>
NETMASK=255.255.255.0
[root@centos02 ~]# systemctl restart network  <!–重新启动docker宿主机网卡服务–>
[root@centos02 ~]# ifconfig  <!–查看docker宿主机网卡信息–>
br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.100.20 netmask 255.255.255.0 broadcast 192.168.100.255
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 0.0.0.0
ens32: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether 00:0c:29:97:5c:9f txqueuelen 1000 (Ethernet)
ens34: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.104 netmask 255.255.255.0 broadcast 192.168.0.255
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
[root@centos02 ~]# yum -y install git  <!–安装git–>
[root@centos02 ~]# git clone https://github.com/jpetazzo/pipework 
<!–下载docker容器网络管理工具pipework–>
[root@centos02 ~]# cp pipework/pipework /usr/local/bin/  <!–优化管理命令–>
[root@centos02 ~]# chmod +x /usr/local/bin/pipework  <!–添加执行权限–>
[root@centos02 ~]# docker run -d –name centos6.7 –network=none hub.c.163.com/public/centos:6.7-tools  <!–通过进行运行容器–>
abec0a6bd3822a2fd702dc44d1cf3043648aadd1a661e577c23701e30ee9df7a
[root@centos02 ~]# pipework br0 centos6.7 192.168.100.102/24 
<!–给centos6.7容器配置IP地址–>
[root@centos02 ~]# docker exec -it centos6.7 /bin/bash  <!–登录centos6.7容器–>
[root@abec0a6bd382 /]# ifconfig  <!–查看IP地址–>
eth1   Link encap:Ethernet HWaddr EE:01:B7:99:90:1C
inet addr:192.168.100.102 Bcast:192.168.100.255 Mask:255.255.255.0
[root@abec0a6bd382 /]# ping 192.168.100.101  <!—->
PING 192.168.100.101 (192.168.100.101) 56(84) bytes of data.
64 bytes from 192.168.100.101: icmp_seq=1 ttl=64 time=0.660 ms
64 bytes from 192.168.100.101: icmp_seq=2 ttl=64 time=0.865 ms
64 bytes from 192.168.100.101: icmp_seq=3 ttl=64 time=0.382 ms
[root@abec0a6bd382 /]# ping 192.168.100.10  <!—->
PING 192.168.100.10 (192.168.100.10) 56(84) bytes of data.
64 bytes from 192.168.100.10: icmp_seq=1 ttl=64 time=0.632 ms
64 bytes from 192.168.100.10: icmp_seq=2 ttl=64 time=0.732 ms
64 bytes from 192.168.100.10: icmp_seq=3 ttl=64 time=0.796 ms
[root@abec0a6bd382 /]# ping 192.168.100.20  <!—->
PING 192.168.100.20 (192.168.100.20) 56(84) bytes of data.
64 bytes from 192.168.100.20: icmp_seq=1 ttl=64 time=0.144 ms
64 bytes from 192.168.100.20: icmp_seq=2 ttl=64 time=0.094 ms
64 bytes from 192.168.100.20: icmp_seq=3 ttl=64 time=0.043 ms

到此这篇关于Docker容器的网络管理和网络隔离的实现的文章就介绍到这了,更多相关Docker 网络管理和网络隔离内容请搜索服务器之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持服务器之家！

原文链接：https://blog.51cto.com/14156658/2495935

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