keepalived配置安装

1：关闭防火墙

　　关闭防火墙：systemctl stop firewalld

　　禁用防火墙：systemctl disable firewalld

 

2：禁用SELinux，不禁用会影响邮件发送 notify_master

　　查看SELinux状态：getenforce

      禁用SELinux：修改/etc/sysconfig/selinux文件  设置SELinux=enforcing改为SELinux=disabled

 

3：下载安装keepalived设置开机启动

　　安装：yum -y install keepalived

　　开机启动：systemctl enable keepalived

 

4：修改keepalived配置文件/etc/keepalived/keepalived.conf

• 禁用vrrp_strict（该配置会影响vrrp组播）
• 修改router_id（该参数是vrrp协议中用于标识本节点的ip地址形式的字符串）
• 修改status（标识主节点和备用节点）
• 设置网卡名称interface
• 设置优先级（优先级高的为主节点）
• 设置通信密码（用于arrp通信）
• 设置vip virtual_ipaddress(虚拟IP)
• 设置邮件通知
  notify_master="/etc/keepalived/mail_notify.sh master"

　　   notify_backup="/etc/keepalived/mail_notify.sh backup"

　　   notify_fault="/etc/keepalived/mail_notify.sh fault"

　　主lvs配置：

• 

• 备份服务配置

• 

   

   

   

   

5：安装mailx软件

　　yum -y install mailx　　

 

6：修改mailx配置文件/etc/mail.rc

　　set from=xxxxxx@qq.com
　　set smtp=smtp.qq.com
　　set smtp-auth-user=xxxxx@qq.com
　　set smtp-auth-passward=xxxxxxxxxx

 

 7：邮件发送脚本，存放地址/etc/keepalived/mail_notify.sh 

设置脚本文件权限：chmod 888 /etc/keepalived/mail_notify.sh 

#!/bin/bash
#
contact="709124637@qq.com"

notify() {
  mailSubject="$(hostname) to be $1, vip floating!"
  mailBody="$(date +'%F %T'): vrrp transition, $(hostname) changed to be $1"
  echo "$mailbody" | mail -s "$mailSubject" $contact
}


case $1 in
master)
  notify master
  ;;
backup)
  notify backup
  ;;
fault)
  notify fault
  ;;
*)
  echo "Usage $(basename $0) {master|backup|fault}"
  exit 1
  ;;
esac