标签：ntp col led cal ORC install bin key hpa
环境准备：
三台 CentOS 7 机器 可联网
永久修改机器名称，断开三台机器xshell重连实现名称的修改
hostnamectl set-hostname c731
hostnamectl set-hostname c732
hostnamectl set-hostname c733
c731 192.168.37.31
c732 192.168.37.32
c733 192.168.37.33
一、以下需要在三台机器上操作
1）三台机器分别操作时间同步
echo "*/5 * * * * /usr/sbin/netpdate ntp1.aliyun.com >/dev/null 2>&1" >>/var/spool/cron/root
2）hosts解析
[root@c732 ~]# cat >>/etc/hosts<<EOF c731 192.168.37.31 c732 192.168.37.32 c733 192.168.37.33 EOF
3）关闭防火墙和selinux
sed -i ‘/^SELINUX/s#enforcing#disabled#g‘ /etc/selinux/config
4)互相配置ssh免密码登录 (相互，最好不要禁止密码登录)
#!/bin/bash yum -y install sshpass &> /dev/null read -p "请输入服务器密码：" passwd UserName=root IP="192.168.37." #创建密钥 ssh-keygen -t dsa -f ~/.ssh/id_dsa -P "" &>/dev/null #分发公钥 for i in 31 32 33 do sshpass -p "$passwd" ssh-copy-id -i ~/.ssh/id_dsa.pub -p 22 -o StrictHostKeyChecking=no $UserName@$IP$i &>/dev/null done
二、mysql主从配置
1）安装yum repo
wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm rpm -ivh mysql-community-release-el7-5.noarch.rpm yum -y install mysql-server
2）启动mysql并修改密码
systemctl restart mysql update mysql.user set password=password(‘123456‘) where user=‘root‘ and host=‘localhost‘;
标签：ntp col led cal ORC install bin key hpa
原文地址：https://www.cnblogs.com/security-guard/p/12304594.html
