1、Docker基础入门实战
1、系统版本# cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)
2、关闭selinux
# sed -i 's/=enforcing/=disabled/g' /etc/selinux/config
# getenforce
Enforcing
# setenforce 0
# getenforce
Permissive
#reboot
3、修改yum源
# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
# yum makecache
4、安装网络工具
# yum -y install net-tools
5、Docker安装相关操作
# yum -y install docker
# docker -v
Docker version 1.13.1, build 94f4240/1.13.1
# systemctl status docker
# systemctl start docker
# systemctl restart docker
# systemctl stop docker
# systemctl enable docker打开开机启动
# systemctl disable docker关闭开机启动
6、Docker镜像相关操作
# docker imags 查看镜像
# docker search centos7 搜索镜像
# docker pull docker.io/openshift/base-centos7 下载镜像
# docker save docker.io/openshift/base-centos7 > /tmp/centos7.tar 保存镜像
# docker rmi docker.io/openshift/base-centos7 删除镜像
# docker load < /tmp/centos7.tar 导入镜像
# docker tag docker.io/openshift/base-centos7centos7 重命名镜像
7、交互式启动容器相关操作
# docker run --name docker_01 -it centos7 /bin/bash 创建容器
# docker ps -a 查看容器
# docker stop docker_01 停止容器
# docker start docker_01 启动容器
# docker kill docker_01 杀掉容器
# docker rm docker_01 删除容器
8、后台启动容器相关操作
# docker run --name docker_01 -d centos7 /bin/bash -c 'while true; do echo docker_01; sleep 10; done' 创建容器
# docker exec -it docker_01 /bin/bash 进入后台启动的容器
# docker logs docker_01 查看容器日志
# for id in `docker ps -a | grep -v CONTAINER | awk '{print $1}'`;do docker start $id; done 批量启动容器
# for id in `docker ps -a | grep -v CONTAINER | awk '{print $1}'`;do docker stop $id; done 批量停止容器
# for id in `docker ps -a | grep -v CONTAINER | awk '{print $1}'`;do docker rm $id; done 批量删除容器
# for id in `docker ps -a | grep -v CONTAINER | awk '{print $1}'`;do docker kill $id; done 批量杀掉容器
9、自定义镜像commit相关操作
# docker commit docker_01 centos7_base 用容器docker_01生成镜像centos7_bash
10、自定义镜像dockerfile相关操作
# mkdir -pv /docker/nginx
# cd /docker/nginx
# cat install.sh
yum install -y wget tar gcc gcc-c++ make pcre pcre-devel zlib zlib-devel openssl openssl-devel
cd /usr/local/src
wget 'http://nginx.org/download/nginx-1.12.2.tar.gz'
tar -zxvf nginx-1.12.2.tar.gz
cd nginx-1.12.2
./configure --prefix=/usr/local/nginx --with-http_ssl_module --with-stream--with-stream_ssl_module
make
make install
rm -rf /usr/local/src
#使用daemon off配置让nginx在前台运行
sed -i -e '/worker_processes/a daemon off;' /usr/local/nginx/conf/nginx.conf
exit 0
# cat Dockerfile
FROM centos7_base
COPY install.sh /tmp/install.sh
RUN sh /tmp/install.sh
# docker build -t centos7_nginx .
# docker run --name docker_nginx -d centos7_nginx /bin/bash -c '/usr/local/nginx/sbin/nginx'
# docker exec -it docker_nginx /bin/bash
bash-4.2# netstat -tuanlp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:80
11、Docker容器网络模式相关操作（默认为桥接模式）
创建桥接模式容器docker_briage（此模式有独立网络）
# docker run --name docker_bridge --net=bridge -d centos7_nginx /bin/bash -c '/usr/local/nginx/sbin/nginx'
# docker exec -it docker_bridge /bin/bash
bash-4.2# ifconfig
eth0: flags=4163mtu 1500
inet 172.17.0.2netmask 255.255.0.0broadcast 0.0.0.0
inet6 fe80::42:acff:fe11:2prefixlen 64scopeid 0x20
ether 02:42:ac:11:00:02txqueuelen 0(Ethernet)
RX packets 8bytes 648 (648.0 B)
RX errors 0dropped 0overruns 0frame 0
TX packets 8bytes 648 (648.0 B)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
lo: flags=73mtu 65536
inet 127.0.0.1netmask 255.0.0.0
inet6 ::1prefixlen 128scopeid 0x10
looptxqueuelen 0(Local Loopback)
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
bash-4.2#
创建主机模式容器docker_host（此模式与宿主机共享网络）
# docker run --name docker_host --net=host -d centos7_nginx /bin/bash -c '/usr/local/nginx/sbin/nginx'
# docker exec -it docker_host /bin/bash
bash-4.2# ifconfig
docker0: flags=4099mtu 1500
inet 172.17.0.1netmask 255.255.0.0broadcast 0.0.0.0
inet6 fe80::42:d8ff:fe1d:d64eprefixlen 64scopeid 0x20
ether 02:42:d8:1d:d6:4etxqueuelen 0(Ethernet)
RX packets 76675bytes 3915531 (3.7 MiB)
RX errors 0dropped 0overruns 0frame 0
TX packets 92619bytes 163138586 (155.5 MiB)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
ens192: flags=4163mtu 1500
inet 192.168.130.66netmask 255.255.255.0broadcast 192.168.130.255
inet6 fe80::250:56ff:fe90:d195prefixlen 64scopeid 0x20
ether 00:50:56:90:d1:95txqueuelen 1000(Ethernet)
RX packets 510747bytes 394855762 (376.5 MiB)
RX errors 0dropped 0overruns 0frame 0
TX packets 306995bytes 432987349 (412.9 MiB)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
lo: flags=73mtu 65536
inet 127.0.0.1netmask 255.0.0.0
inet6 ::1prefixlen 128scopeid 0x10
looptxqueuelen 0(Local Loopback)
RX packets 4bytes 200 (200.0 B)
RX errors 0dropped 0overruns 0frame 0
TX packets 4bytes 200 (200.0 B)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
bash-4.2#
12、Docker容器模式下端口映射
# docker run -p 8801:80 -p 8802:80 --name docker_map -d centos7_nginx /bin/bash -c '/usr/local/nginx/sbin/nginx'
# docker exec -it docker_map /bin/bash
bash-4.2# netstat -tuanlp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 1/nginx: master pro
bash-4.2# exit
exit
# netstat -tuanlp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1344/sshd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 2253/master
tcp 0 52 192.168.130.66:22 192.168.53.137:65516 ESTABLISHED 17791/sshd: root@pt
tcp 0 0 192.168.130.66:22 192.168.53.137:49616 ESTABLISHED 13743/sshd: root@pt
tcp6 0 0 :::22 :::* LISTEN 1344/sshd
tcp6 0 0 ::1:25 :::* LISTEN 2253/master
tcp6 0 0 :::8801 :::* LISTEN 18215/docker-proxy-
tcp6 0 0 :::8802 :::* LISTEN 18204/docker-proxy-
#
13、Docker容器与宿主机文件共享相关操作
# docker run --privileged=true -v /htdocs:/usr/local/nginx/html/htdocs --name docker_share -d centos7_nginx /bin/bash -c '/usr/local/nginx/sbin/nginx'
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