docker安装

yum安装docker

1. yum安装
   yum -y install docker-io
2. 启动docker
   service docker start
3. 开机启动
   chkconfig --add --level 245 docker

• 问题处理1
  service docker status要是出现docker dead but subsys locked执行
  rm /var/run/docker.*
  rm /var/lock/subsys/docker
  rm -rf /var/lib/docker/*

rpm安装docker

1. rpm手动下载安装
   yum install https://get.docker.com/rpm/1.7.1/centos-6/RPMS/x86_64/docker-engine-1.7.1-1.el6.x86_64.rpm
2. 启动docker
   service docker start
3. docker镜像加速（用的网易蜂巢）
   sudo echo "DOCKER_OPTS="$DOCKER_OPTS --registry-mirror=http://hub-mirror.c.163.com"" >> /etc/default/docker
   service docker restart