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。
1环 境 centos7 2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 3启动 docker [root@chaols ~]# systemctl start docker 4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 5下载 centos 镜像 [root@chaols ~]# docker pull centos
默认centos镜像没有ifconfig
6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" 7开始制作 docker build -f ./dockerfile_chao_centos -t chao.centos:0.1 . 8创建虚拟机 root@chaols ~]# docker run -it --name test chao.centos:0.1 /bin/bash 9验证 ifconfig [root@f5be14eebc1e local]# ifconfig eth0: flags=4163mtu 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=73mtu 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