Centos7 安装Docker
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准备:
系统要求:CentOS 7-64-bit
卸载老版本docker:
$ sudo yum remove docker \ docker-common \ container-selinux \ docker-selinux \ docker-engine
/var/lib/docker/目录下面的images, containers, volumes, and networks会被保留
1.使用root用户
2.更新yum包
sudo yum update
3.加入 yum repo
sudo tee /etc/yum.repos.d/docker.repo <<-'EOF'
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/7/
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
EOF
4.安装Docker包
sudo yum install docker-engine
5.启动Docker守护进程
sudo service docker start
6.测试安装
sudo docker run hello-world
7.设置开机启动Docker Daemon
systemctl start docker.service
systemctl enable docker.service
8.查看docker进程状态
systemctl grep docker
9.换回默认的iptables
systemctl disable firewall
yum -y install iptables-services
systemctl enable iptables
systemctl start iptables
10.查看安装的Docker package
yum list installed | grep docker
11.移除package
sudo yum -y remove docker-engine.x86_64
12.删除所有images、containers、volumes
rm -rf /var/lib/docker
13.查看版本信息
docker version
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