1. docker基础安装
1.1 docker安装，每台机器都安装
tee /etc/yum.repos.d/docker.repo <<-'EOF'
[dockerrepo]
name=Docker Repository
baseurl=http://192.168.2.37/centos7/extra/
enabled=1
gpgcheck=0
EOF
# 安装
yum -y install docker-engine
# 开机启动
systemctl enable docker.service
systemctl start docker.service
# 校验
docker version
#修改/usr/lib/systemd/system/docker.service
#增加私有库
sed -i "s|ExecStart=/usr/bin/docker daemon|ExecStart=/usr/bin/docker daemon --selinux-enabled=true --insecure-registry 192.168.2.39:5000|g" /usr/lib/systemd/system/docker.service
sudo systemctl daemon-reload
sudo service docker restart
