安装Docker

Centos 7 安装 Docker

1. 安装 yum 仓库配置工具和 Docker 存储依赖

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

2. 安装 Docker yum 仓库

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

3. 安装 Docker

   yum install -y docker-ce docker-ce-cli containerd.io
   

4. 注册 Docker 服务，开机自动启动

   systemctl enable docker
   systemctl restart docker
   

5. 配置 Docker , registry-mirrors 指定使用国内镜像仓库

   mkdir -p /etc/docker
   cat <<EOF > /etc/docker/daemon.json
   {
     "exec-opts": ["native.cgroupdriver=systemd"],
     "log-driver": "json-file",
     "log-opts": {
       "max-size": "100m"
     },
     "storage-driver": "overlay2",
     "storage-opts": [
       "overlay2.override_kernel_check=true"
     ],
     "registry-mirrors" : [
       "https://registry.docker-cn.com"
     ]
   }
   EOF
   
   systemctl daemon-reload
   systemctl restart docker
   

6. 测试 Docker 是否安装成功

   docker run hello-world