Uninstall old versions

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

SET UP THE REPOSITORY

  sudo yum install -y  yum-utils device-mapper-persistent-data lvm2
  ​
  sudo yum-config-manager --add-repo \   https://download.docker.com/linux/centos/docker-ce.repo
  ​

Optional

  sudo yum-config-manager --enable docker-ce-edge
  sudo yum-config-manager --enable docker-ce-test
  #可以关闭
  sudo yum-config-manager --disable docker-ce-edge

INSTALL DOCKER CE

1、common install

  sudo yum install -y docker-ce

2、to install specific version

  yum list docker-ce --showduplicates | sort -r
  ​
  #docker-ce.x86_64            18.09.0.ce-1.el7.centos           docker-ce-stablebash
  ​
  sudo yum install docker-ce-<VERSION STRING>

3、start and verify

  sudo systemctl start docker
  sudo docker run hello-world

Install using the convenience script

  $ curl -fsSL https://get.docker.com -o get-docker.sh
  $ sudo sh get-docker.sh
  ​
  <output truncated>
  ​
   sudo usermod -aG docker your-user

Uninstall Docker CE

  sudo yum remove docker-ce
  sudo rm -rf /var/lib/docker

Test Docker version

  docker --version
  sudo docker info

Test Docker installation

  sudo docker run hello-world
  sudo docker image ls
  sudo docker container ls --all

Recap and cheat sheet

  ## List Docker CLI commands
  docker
  docker container --help
  ​
  ## Display Docker version and info
  docker --version
  docker version
  docker info
  ​
  ## Execute Docker image
  docker run hello-world
  ​
  ## List Docker images
  docker image ls
  ​
  ## List Docker containers (running, all, all in quiet mode)
  docker container ls
  docker container ls --all
  docker container ls -aq

客户端配置

1、证书方式

  sudo mkdir -p /etc/docker/certs.d/192.192.49.87
  sudo cp /var/docker-data/certs/domain.crt /etc/docker/certs.d/192.192.49.87/ca.crt
  ​
  #可能需要OS级信任
  sudo cp /etc/dockercerts/domain.crt /etc/pki/ca-trust/source/anchors/192.192.49.87.crt
  sudo update-ca-trust
  ​

2、http方式

  #或者关闭安全
  sudo cat << EOF > /etc/docker/daemon.json
  {
    "insecure-registries" : ["192.192.49.87"]
  }
  EOF
  ​
  sudo systemctl restart docker

docker-compose配置

安装

  sudo curl -L "https://github.com/docker/compose/releases/download/1.23.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
  ​
  sudo chmod +x /usr/local/bin/docker-compose
  ​
  sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose
  docker-compose --version

END