Centos 部署Keepalive高可用软件

Keepalive安装部署

一．环境介绍

1）Centos6.4

2) keepalived-1.2.12

3) 主备机的ip

Master:172.31.100.5

Slave: 172.31.100.54

Virtault ip:172.31.100.1

二．部署安装

计划具体部署步骤：

步骤1：安装

步骤2：配置

步骤3：运行

步骤4：检查

现在开始：

1）安装

$ 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

2）配置

$ 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/

A）Master:

$ vi /etc/keepalived/keepalived.conf
! Configuration File for keepalived

global_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" 

}

B）Slave:

$ vi /etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_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" 

}

C）主备两边都需要的检测脚本和邮件报警脚本:

#keepalive调用该脚本检测haproxy是否停止
$ vi /etc/keepalived/chk_haproxy.sh
#!/bin/bash
status=$(ps aux|grep haproxy | grep -v grep | grep -v bash | wc -l)
if [ "${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
    fi
fi

#邮件报警脚本　来自网络刘天斯大牛

$ 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 = ‘[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

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=‘[紧急]负载均衡器邮件通知‘
mail_body_plain=notify_type+‘被激活，请做好应急处理。‘
mail_body_html=‘<b><font color=red>‘+notify_type+‘被激活，请做好应急处理。</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()

3）运行

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

4）检查

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

三．结尾

以上是该软件的全部部署过程