haproxy+keepalived配置

haproxy+keepalived配置

1. cat keepalived.conf

! Configuration File for keepalived

global_defs {

   notification_email {

     1041126478@qq.com

   }

   notification_email_from jzyc5@jzyc.com

   smtp_server 192.168.44.27

   smtp_connect_timeout 30

   router_id LVS_DEVEL

}

vrrp_script chk_state_down {

    script "[[ -f /etc/keepalived/down ]] && exit 1 || exit 0"

    interval 2

    weight 3

}

vrrp_script chk_haproxy {

  script "/etc/keepalived/chk_haproxy.sh" #

  interval 2 # script

  weight 2

}

vrrp_instance VI_1 {

    state MASTER

    interface em2

    virtual_router_id 27

    priority 100

    advert_int 1

    authentication {

        auth_type PASS

        auth_pass 1111

    }

    virtual_ipaddress {

        192.168.44.102

    }

    track_script {

      chk_haproxy  #

      chk_state_down

    }

    

    notify_master "/etc/keepalived/notify.sh master 192.168.44.102"

    notify_backup "/etc/keepalived/notify.sh backup 192.168.44.102"

    notify_fault  "/etc/keepalived/notify.sh fault 192.168.44.102"

}

2. cat chk_haproxy.sh

#!/bin/bash

#

# author: weizhifeng

# description:

# ?¨?2?haproxyˇ·委???1?????ˉhaproxy￡?

# ?1??°?????keepalived

#

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

3. cat notify.sh

# desccription: An example of notify script

#

contact='jzyc5@jzyc.com'

notify() {

mailsubject="`hostname` to be $1: $2 floating"

mailbody="`date '+%F %H:%M:%S'`: vrrp transition, `hostname` changed to be $1"

echo $mailbody | mail -s "$mailsubject" $contact

}

case "$1" in

master)

notify master

/etc/rc.d/init.d/haproxy start

exit 0

;;

backup)

notify backup

/etc/rc.d/init.d/haproxy stop

exit 0

;;

fault)

notify fault

/etc/rc.d/init.d/haproxy stop

exit 0

;;

*)

echo 'Usage: `basename $0` {master|backup|fault}'

exit 1

;;

esac