Deploy Keepalive high-availability software in Centos

Deploy Keepalive high-availability software in Centos
I. environment Introduction 1) Centos6.4 2) keepalived-1.2.12 3) Master ip Master: 172.31.100.5 Slave: 172.31.100.54 Virtault ip: 172.31.100.1 II. deployment and installation plan specific deployment steps: Step 1: Installation Step 2: configuration Step 3: Run Step 4: Check now start: 1) install $ yum install-y gcc make 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) configure $ cp/usr/local/keepalived/sbin/keepalived/usr/sbin/$ cp/usr/local/keepalived/etc/sysconfig/$ cp/ usr/local/keepalived/etc/rc. d/init. d/keepalived/etc/init. d/$ cp-rf/usr/local/keepalived/etc/A) Master:

$ 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" }

 

B) Slave:

$ 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" }

 

C) Check scripts and email alarm scripts required on both the master and slave sides:

# Keepalive call this script to check if haproxy stops $ 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 # The email alarm script is from the Internet: Liu tiansi Daniel $ 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 '# Where the mail comes from strTo = 'receive @ gmail.com' # inbox smtp_server = 'smtp .126.com '# mail server address smtp_user =' send @ 126.com '# send the authorization smtp_pass = 'passwordxx' # password if sys. argv [1]! = "Master" and sys. argv [1]! = "Backup" and sys. argv [1]! = "Fault": sys. exit () else: policy_type = sys. argv [1] mail_title = '[URGENT] Server Load balancer email notification 'mail_body_plain = policy_type +' is activated. Please handle the emergency. 'Mail_body_html = '<B> <font color = red>' + policy_type + 'is activated. Please handle the emergency. </Font> </B> 'msgroot = MIMEMultipart ('related') msgRoot ['subobject'] = 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 # Check the process $ ip addr show # Check whether the address is switched. the above is the entire deployment process of the software.