环境准备

0. 服务器环境

系统版本	IP	配置	主机名
CentOS Linux release 7.4.1708	192.168.1.183	8核32g 40G磁盘	node1
CentOS Linux release 7.4.1708	192.168.1.185	4核8g 40G磁盘	node2

1. 腾讯云yum源

#rm -f /etc/yum.repos.d/*
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.cloud.tencent.com/repo/centos7_base.repo
wget -O /etc/yum.repos.d/epel.repo http://mirrors.cloud.tencent.com/repo/epel-7.repo

yum clean all
yum makecache