centos7 /centos 6 安装docker
安装 - CentOS-7
Docker是一个开源的引擎,可以轻松的为任何应用创建一个轻量级的、可移植的、自给自足的容器。开发者在笔记本上编译测试通过的容器可以批量地在生产环境中部署,包括VMs(虚拟机)、bare metal、OpenStack 集群和其他的基础应用平台。?
Docker通常用于如下场景:
- web应用的自动化打包和发布;
- 自动化测试和持续集成、发布;
- 在服务型环境中部署和调整数据库或其他的后台应用;
- 从头编译或者扩展现有的OpenShift或Cloud Foundry平台来搭建自己的PaaS环境。
一、使用安装脚本安装。
备注:你可以按照同样的步骤在CentOS系统下面安装docker。- 使用一个有sudo权限的帐号登录红帽系统。
- 更新现有的yum包。
- 执行docker安装脚本。
- 启动docker服务。
- 确认docker安装成功。
- $ sudo docker run hello-world Unable to find image 'hello-world:latest' locally8.? latest: Pulling from hello-world9.? a8219747be10: Pull complete 91c95931e552: Already exists 10. hello-world:latest: The image you are pulling has been verified. Important: image verification is a tech preview feature and should not be relied on to provide security. Digest: sha256:aa03e5d0d5553b4c3473e89c8619cf79df368babd1.7.1cf5daeb82aab55838d11. Status: Downloaded newer image for hello-world:latest12. Hello from Docker.13. This message shows that your installation appears to be working correctly.14. To generate this message, Docker took the following steps: 1. The Docker client contacted the Docker daemon. 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.15. ????????(Assuming it was not already locally available.) 3. The Docker daemon created a new container from that image which runs the executable that produces the output you are currently reading. 4. The Docker daemon streamed that output to the Docker client, which sent it to your terminal.16. ?17. To try something more ambitious, you can run an Ubuntu container with:18. ?$ docker run -it ubuntu bash
二、使用yum包安装
- 使用有sudo权限的帐号登录系统。
- 更新yum包。
- 添加docker源。
- $ cat >/etc/yum.repos.d/docker.repo <<-EOF [dockerrepo]6.? name=Docker Repository
- 使用yum命令安装docker。
- 启动docker服务。
- 确认docker是否安装成功。
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