$ yum install -y gcc make openssl openssl-devel$ wget http://www.keepalived.org/software/keepalived-1.2.12.tar.gz$ tar zxvf keepalived-1.2.12.tar.gz$ cd keepalived-1.2.12$ ./configure --PRefix=/usr/local/keepalived$ make && make install

$ cp /usr/local/keepalived/sbin/keepalived /usr/sbin/$ cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/$ cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/$ cp -rf /usr/local/keepalived/etc/keepalived /etc/

$ vi /etc/keepalived/keepalived.conf! Configuration File for keepalivedglobal_defs {    router_id LVS_DEVEL } vrrp_script chk_haproxy {           script "/etc/keepalived/chk_haproxy.sh"           interval 2           weight 2 } vrrp_instance VI_1 {           interface eth0          state BACKUP          priority 101          virtual_router_id 50          garp_master_delay 1          authentication {                       auth_type PASS                       auth_pass Hc8scrRddsLsc3          }           virtual_ipaddress {                       172.31.100.1          }           track_script {                       chk_haproxy          }         #notify_master "/etc/keepalived/Mailnotify.py backup"        #notify_backup "/etc/keepalived/Mailnotify.py master"        #notify_fault "/etc/keepalived/Mailnotify.py fault" }

$ vi /etc/keepalived/keepalived.conf! Configuration File for keepalivedglobal_defs {    router_id LVS_DEVEL } vrrp_script chk_haproxy {           script "/etc/keepalived/chk_haproxy.sh"           interval 2           weight 2 } vrrp_instance VI_1 {           interface eth0          state BACKUP          priority 100          virtual_router_id 50          garp_master_delay 1           authentication {                       auth_type PASS                       auth_pass Hc8scrRddsLsc3          }           virtual_ipaddress {                       172.31.100.1          }           track_script {                       chk_haproxy          }         notify_master "/etc/keepalived/Mailnotify.py backup"        notify_backup "/etc/keepalived/Mailnotify.py master"        #notify_fault "/etc/keepalived/Mailnotify.py fault" }

#keepalive調(diào)用該腳本檢測haproxy是否停止$ vi /etc/keepalived/chk_haproxy.sh#!/bin/bashstatus=$(ps aux|grep haproxy | grep -v grep | grep -v bash | wc -l)if [ "${status}" = "0" ]; then    /etc/init.d/haproxy start    status2=$(ps aux|grep haproxy | grep -v grep | grep -v bash |wc -l)    if [ "${status2}" = "0"  ]; then            /etc/init.d/keepalived stop    fifi

#郵件報警腳本　來自網(wǎng)絡劉天斯大牛$ vi /etc/keepalived/chk_haproxy.sh#!/usr/bin/env python#coding: utf-8 from email.MIMEMultipart import MIMEMultipart from email.MIMEText import MIMEText from email.MIMEImage import MIMEImage from email.header import Header import sys import smtplib strFrom = 'xxxxx@126.com'      #郵件來自哪里strTo = 'receive@Gmail.com'    #收件箱smtp_server='smtp.126.com'     #郵件服務器地址smtp_user='send@126.com'       #發(fā)件箱smtp_pass='passwdxx'           #密碼if sys.argv[1]!="master" and sys.argv[1]!="backup"  and sys.argv[1]!="fault":     sys.exit() else:     notify_type=sys.argv[1] mail_title='[緊急]負載均衡器郵件通知' mail_body_plain=notify_type+'被激活，請做好應急處理。' mail_body_html='<b><font color=red>'+notify_type+'被激活，請做好應急處理。</font></b>' msgRoot = MIMEMultipart('related') msgRoot['Subject'] =Header(mail_title,'utf-8') msgRoot['From'] = strFrom msgRoot['To'] = strTo msgAlternative = MIMEMultipart('alternative') msgRoot.attach(msgAlternative) msgText = MIMEText(mail_body_plain, 'plain', 'utf-8') msgAlternative.attach(msgText) msgText = MIMEText(mail_body_html, 'html','utf-8') msgAlternative.attach(msgText)  smtp = smtplib.SMTP() smtp.connect(smtp_server) smtp.login(smtp_user,smtp_pass) smtp.sendmail(strFrom, strTo, msgRoot.as_string()) smtp.quit()

$ /etc/init.d/keepalived start$ chkconfig keepalived on

$ ps aux|grep keeepalived　#查看進程$ ip addr show           　#用來查看地址是否切換的