| Docker 是一个开源的应用容器引擎，基于 Go 语言 并遵从 Apache2.0 协议开源。Docker 可以让开发者打包他们的应用以及依赖包到一个轻量级、可移植的容器中，然后发布到任何流行的 Linux 机器上，也可以实现虚拟化。接下来为大家演示一下docker部署wordpress博客系统。 |
环境
安装docker
移除旧版本docker
[root@chaols ~]# sudo yum remove docker > docker-client > docker-client-latest > docker-common > docker-latest > docker-latest-logrotate > docker-logrotate > docker-engine
安装yum-utils包并设置稳定存储库
[root@chaols ~]# yum install -y yum-utils
安装docker
[root@chaols ~]# yum install docker-ce docker-ce-cli containerd.io
启动docker
[root@chaols ~]# systemctl start docker
查看docker镜像
刚刚安装docker是没有镜像的
[root@chaols ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE
下载centos镜像
[root@chaols ~]# docker pull centos
默认centos镜像没有ifconfig
自定义dockerfile文件
FROM centos ENV MYPATH /usr/local WORKDIR $MYPATH RUN yum install -y net-tools RUN yum install -y vim EXPOSE 80 CMD echo $MYPATH CMD echo "-----end-----" CMD /bin/bash"
开始制作
docker build -f ./dockerfile_chao_centos -t chao.centos:0.1 .
创建虚拟机
root@chaols ~]# docker run -it --name test chao.centos:0.1 /bin/bash
验证ifconfig
[root@f5be14eebc1e local]# ifconfig
eth0: flags=4163<up,broadcast,running,multicast> mtu 1500
inet 172.17.0.2 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:ac:11:00:02 txqueuelen 0 (Ethernet)
RX packets 6 bytes 516 (516.0 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
lo: flags=73<up,loopback,running> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
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