Centos deployment KeepAlive High-availability software

Keepalive Installation Deployment

A. Environment Introduction

1) Centos6.4

2) keepalived-1.2.12

3) IP of the master standby machine

master:172.31.100.5

slave:172.31.100.54

Virtault ip:172.31.100.1

two. Deployment Installation

Plan specific deployment steps:

Step 1: Install

Step 2: Configure

Step 3: Run

Step 4: Check

Start Now:

1) installation

$ 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.  A . tar.gz$ CD keepalived-1.2.  A $ . /configure--prefix=/usr/local/&& make install

2) Configuration

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

A ) Master:

$ vi/etc/keepalived/keepalived.conf! Configuration File forkeepalivedglobal_defs {router_id Lvs_devel} vrrp_script chk_haproxy {script"/etc/keepalived/chk_haproxy.sh"interval2Weight2} vrrp_instance vi_1 {Interfaceeth0 State BACKUP Priority101virtual_router_id -Garp_master_delay1Authentication {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" }

B ) Slave:

$ vi/etc/keepalived/keepalived.conf! Configuration File forkeepalivedglobal_defs {router_id Lvs_devel} vrrp_script chk_haproxy {script"/etc/keepalived/chk_haproxy.sh"interval2Weight2} vrrp_instance vi_1 {Interfaceeth0 State BACKUP Priority -virtual_router_id -Garp_master_delay1Authentication {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" }

C ) Primary and standby detection scripts and mail alert scripts required on both sides :

#keepalive调用该脚本检测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

#邮件报警脚本 from Network Liu Tians Daniel $ VI/etc/keepalived/chk_haproxy.sh#!/usr/bin/Env Python#coding:utf-8  fromemail. Mimemultipart Import Mimemultipart fromemail. Mimetext Import Mimetext fromemail. Mimeimage Import Mimeimage fromemail.header Import Header import sys import smtplib strfrom='[email protected]'#邮件来自哪里strTo='[email protected]'#收件箱smtp_server='smtp.126.com'#邮件服务器地址smtp_user='[email protected]'#发件箱smtp_pass='passwdxx'#密码ifsys.argv[1]!="Master"and sys.argv[1]!="Backup"and sys.argv[1]!="Fault": Sys.exit ()Else: Notify_type=sys.argv[1] Mail_title='[emergency] load balancer mail notification'Mail_body_plain=notify_type+'be activated, please do the emergency treatment. 'mail_body_html='<b><font color=red>'+notify_type+'be activated, please do the emergency treatment. </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 ()

3) Run

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

4) Check

$ ps aux| grep keeepalived #查看进程 $ IP addr Show           #用来查看地址是否切换的

three. End

The above is the entire deployment process of the software

Centos deployment KeepAlive High-availability software