Linux uses docker to build an environment to run microservices

Install docker

1. Remove old version of Docker (if installed):

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

2. Set up Docker's repository:

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

3. Install Docker:

   sudo yum install docker-ce
   

   If you want to install a specific version of Docker, you can use the following command:

   sudo yum install docker-ce-<VERSION_STRING>
   

   Replace <VERSION_STRING>with the specific version number you want to install, for example sudo yum install docker-ce-20.10.2.

4. Start the Docker service:

   # 启动docker服务
   [root@MT01 ~]# systemctl start docker
   
   # 打开docker自启动
   [root@MT01 ~]# systemctl enable docker
   Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
   
   [root@MT01 ~]# systemctl is-enabled docker
   enabled