docker安装-卸载

docker官网正确安装-卸载

一、查看系统内核

　　　　uname -r

　　　　3.10.0-229.el7.x86_64

二、Install Docker

　　1、Install with yum

　　　　sudo yum update

　　2、vi /etc/yum.repos.d/docker.repo

　　　　[dockerrepo]

　　　　name=Docker Repository

　　　　baseurl=https://yum.dockerproject.org/repo/main/centos/7/

　　　　enabled=1

　　　　gpgcheck=1

　　　　gpgkey=https://yum.dockerproject.org/gpg

　　    vi /etc/yum.repos.d/epel.repo

　　　　[epel]

　　　　name=Extra Packages for Enterprise Linux 6 - $basearch
　　　　#baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch
　　　　mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch
　　　　failovermethod=priority
　　　　enabled=1
　　　　gpgcheck=1
　　　　gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6

　　　　[epel-debuginfo]
　　　　name=Extra Packages for Enterprise Linux 6 - $basearch - Debug
　　　　#baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch/debug
　　　　mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-debug-6&arch=$basearch
　　　　failovermethod=priority
　　　　enabled=0
　　　　gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
　　　　gpgcheck=1

　　　　[epel-source]
　　　　name=Extra Packages for Enterprise Linux 6 - $basearch - Source
　　　　#baseurl=http://download.fedoraproject.org/pub/epel/6/SRPMS
　　　　mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-source-6&arch=$basearch
　　　　failovermethod=priority
　　　　enabled=0
　　　　gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
　　　　gpgcheck=1

　　3、安装docker

　　　　sudo yum install docker-engine

　　4、设置开机自启服务

　　　　sudo systemctl enable docker.service

　　5、启服务

　　　　sudo systemctl start docker

　　6、验证是否正确安装，通过运行一个测试图像在一个容器中。

$ sudo docker run --rm hello-world

 Unable to find image 'hello-world:latest' locally
 latest: Pulling from library/hello-world
 c04b14da8d14: Pull complete
 Digest: sha256:0256e8a36e2070f7bf2d0b0763dbabdd67798512411de4cdcf9431a1feb60fd9
 Status: Downloaded newer image for hello-world:latest

 Hello from Docker!
 This message shows that your installation appears to be working correctly.

 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.
  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.

 To try something more ambitious, you can run an Ubuntu container with:
  $ docker run -it ubuntu bash

 Share images, automate workflows, and more with a free Docker Hub account:
  https://hub.docker.com

 For more examples and ideas, visit:
  https://docs.docker.com/engine/userguide/

三、Uninstall docker

1、查询安装的docker版本

　　$ yum list installed | grep docker

　　docker-engine.x86_64 1.7.1-0.1.el7@/docker-engine-1.7.1-0.1.el7.x86_64

2、卸载

　　$ sudo yum -y remove docker-engine.x86_64

3、删除所有图片、容器和卷,运行以下命令:

　　$ rm -rf /var/lib/docker