docker 安装

 Centos 7.X 安装docker 

#!/bin/bash 

# 成功输出
success_echo(){
    echo -en "33[40;32m ########################### 33[0m
"
    echo -en "33[40;32m ${1} 33[0m
"
    echo -en "33[40;32m ########################### 33[0m
"
}

# 错误输出
error_echo(){
    echo -en "33[40;31m ########################### 33[0m
"
    echo -en "33[40;31m ${1} 33[0m
"
    echo -en "33[40;31m ########################### 33[0m
"
}

function install_docker_server(){
  yum -y install yum-utils
  yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
  # 安装docker-ce
  /usr/bin/yum  -y install  docker-ce-${1}
  # 更新docker 配置
  if [ -f /usr/lib/systemd/system/docker.service ];then
    /usr/bin/sed -i 's#^ExecStart=.*#ExecStart=/usr/bin/dockerd -H tcp://127.0.0.1:2375 -H unix:///var/run/docker.sock -g /opt/docker -s devicemapper  --storage-opt dm.fs=xfs --storage-opt dm.use_deferred_removal=true --storage-opt dm.use_deferred_deletion=true --storage-opt dm.basesize=5G#g' /usr/lib/systemd/system/docker.service
  else
    error_echo "docker server install failure"
  fi
  # 设置docker 开机自启动
  /usr/bin/systemctl enable docker
  # 启动docker 服务
  /usr/bin/systemctl start docker
}


# 安装docker-compose命令
install_docker_compose(){
   # 检查是否安装pip 
   if [ ! -f /usr/bin/pip ];then
   # install python-pip 
        /usr/bin/yum -y install epel-release python-devel python-pip
   fi
   # install docker-compose
   if [ -f /bin/docker-compose ];then
      success_echo "Docker-compose is already installed"
   else
      /usr/bin/pip install docker-compose &&  success_echo "docker-compose install success"
   fi
}

# 安装docker-enter命令
install_docker_enter(){
   # install  docker-enter
   which docker-enter
   if [ $? -eq 0 ];then
      success_echo "Docker-enter is already installed"
   else
      /usr/bin/docker run --rm -v /usr/local/bin:/target jpetazzo/nsenter &&    success_echo "docker-enter install success"
   fi
}

main(){
  DOCKER_VERSION=18.09.3
  # 安装docker
  install_docker_server ${DOCKER_VERSION}
  # 安装 docker-compose
  install_docker_compose
  # 安装 docker-enter
  install_docker_enter
}

main