安装keepalived的依赖

yum install -y openssl ipvsadm.x86_64 popt* libnl*

yum install openssl* -y

yum -y install libnfnetlink.x86_64 libnfnetlink-devel.x86_64

官网下载keepalived 解压安装

tar zxvf keepalived-1.3.4.tar.gz

./configure 

make && make install

 cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/

cp /usr/local/sbin/keepalived /usr/sbin/

vi /etc/keepalived/keepalived.conf

global_defs {

router_id haweb_1

}

vrrp_sync_group VGM {

group {

VI_HA

}

}

vrrp_instance VI_HA {

state MASTER #slave

interface eth0

lvs_sync_daemon_inteface eth0

virtual_router_id 145

priority 100 #90

advert_int 5

authentication {

auth_type PASS

auth_pass zhangbin

}

virtual_ipaddress {

192.168.1.145/24 dev eth0

}

}

 

在master和slave都同时配置以上步骤。。只是配置文件稍有不同

 

测试在master死机后slave会马上衔接145继续工作。。

 

 

如果不是keepalived死掉而是httpd死掉则需要把陪文写为

vi /etc/keepalived/keepalived.conf

global_defs {

router_id haweb_1

}

vrrp_sync_group VGM {

group {

VI_HA

}

}

vrrp_script chk_http_port {

script "/etc/keepalived/httpd.sh"

interval 1

weight 1

}

vrrp_instance VI_HA {

state MASTER

interface eth0

lvs_sync_daemon_inteface eth0

virtual_router_id 51

priority 100

advert_int 5

authentication {

auth_type PASS

auth_pass zhangbin

}

virtual_ipaddress {

192.168.1.145/24 dev eth0

}

track_script {

chk_http_port

}

}

 vi httpd.sh 

#!/bin/bash

counter=$(ps -C httpd --no-heading|wc -l)

if [ "${counter}"="0" ]; then

/usr/sbin/httpd

sleep 2

counter=$(ps -C httpd --no-heading|wc -l)

if [ "${counter}"="0" ]; then

/usr/bin/systemctl stop keepalived.service

fi

fi