在Centos7 上部署Docker

1. Uninstall old versions

Older versions of Docker were called docker or docker-engine. If these are installed, uninstall them, along with associated dependencies.

 sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

2.#### Set up the repository

Install the yum-utils package (which provides the yum-config-manager utility) and set up the stable repository.

sudo yum install -y yum-utils

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

2. Install Docker Engine

安装最新版本的Docker

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

或者指定版本的Docker

yum list docker-ce --showduplicates | sort -r

docker-ce.x86_64 3:18.09.1-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.0-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.1.ce-3.el7 docker-ce-stable docker-ce.x86_64 18.06.0.ce-3.el7 docker-ce-stable

这些带有.el7都是可以安装在Centos 7上的

sudo yum install docker-ce-<VERSION_STRING> docker-ce-cli-<VERSION_STRING> containerd.io

比如我想安装docker-ce.x86_64 3:18.09.1-3.el7 docker-ce-stable 那么命令就应该是

sudo yum install docker-ce-18.09.01 docker-ce-cli-18.09.01 containerd.io

3. 启动Docker

sudo systemctl start docker

4. 验证Docker是不是安装成功

 sudo docker run hello-world

具体可以参考官网 docs.docker.com/engine/inst…