Docker安装

1-安装Docker所需的包

sudo yum install -y yum-utils device-mapper-persistent-data lvm2

2-安装stable仓库

sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo

3-[可选]启用edge和test仓库

# 启用edge仓库
sudo yum-config-manager --enable docker-ce-edge
# 启用test仓库
sudo yum-config-manager --enable docker-ce-test     

# 禁用edge仓库
sudo yum-config-manager --disable docker-ce-edge
# 禁用test仓库  
sudo yum-config-manager --disable docker-ce-test

4-安装Docker CE

# 更新yum的包索引
sudo yum makecache fast

# 安装最新版本Docker CE
sudo yum install docker-ce

5-启动Docker

sudo systemctl start docker

6-验证安装是否正确

sudo docker run hello-world

7-升级Docker CE

sudo yum makecache fast

8-配置镜像加速器

地址由阿里云产生，可去阿里云申请

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
   "registry-mirrors": ["https://znbtai33.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

9-开机自启

sudo systemctl enable docker

10-查看docker版本

docker version