Installing Docker

Install Docker on all nodes and use Docker as the available container.

1. Install Docker. For details, see Docker 19.03.10 Installation Guide (CentOS & openEuler).
2. Set Docker to automatically start upon system startup.

   systemctl enable docker.service

3. Configure the experimental feature.

   Enable the experimental feature of the Docker CLI and enable the --platform parameter of Docker.

   1. Open the file.

      vi /etc/docker/daemon.json

   2. Press i to enter the insert mode and add the following content to /etc/docker/daemon.json:

      { 
          "experimental": true 
      }

   3. Press Esc to exit the insert mode. Type :wq! and press Enter to save the file and exit.
4. Restart the Docker service.

   systemctl daemon-reload
   systemctl restart docker