一、?安裝nginx(略)

二、?安裝keepalive

安裝依賴包?yum install –y popt* gcc* openssl* nmap

tar fvxz keepalived-1.2.15.tar.gz

cd keepalived-1.2.15

./configure –prefix=/usr/local/keepalived

make && make installmkdir /etc/keepalived??##為keepalived創(chuàng)建配置文件目錄，默認(rèn)配置文件從/etc/keepalived下讀取

cp /usr/local/keepalived/sbin/keepalived /usr/sbin/ ##復(fù)制keepalived的二進(jìn)制命令

cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/??##提供啟動(dòng)腳本

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

cp /usr/local/keepalived/ety/sysconfig/keepalived /usr/sysconfig/

三、?配置keepalive

1．??打開配置文件vim /etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {

notification_email {

liumingtao@zhanghetianxia.com

lmt122900@sina.com

}

notification_email_from pub@easymobi.cn

smtp_server 127.0.0.1

smtp_connect_timeout 30

router_id LVS_DEVEL

}

vrrp_script chk_http_port {

script "/opt/nginx.sh"??#檢測(cè)nginx是否存活腳本位置(下面會(huì)有定義腳本名)

interval 2

weight 2

}

vrrp_instance VI_1 {

state MASTER #?主???(備用?BACKUP)

interface eth0???????#本機(jī)ip網(wǎng)卡名稱

virtual_router_id 10??#?每組keepalive routeid相同，不同組不能一樣

mcast_src_ip 192.168.102.79??#本機(jī)ip?備機(jī)用備機(jī)ip

priority 100??#權(quán)重?備機(jī)數(shù)值要比主的數(shù)值小

advert_int 1??#?檢查間隔

authentication {

auth_type PASS

auth_pass 1111222

}

track_script {

chk_http_port??#定義nginx檢測(cè)腳本名稱

}

virtual_ipaddress {

192.168.102.89??#虛擬ip

}

}

啟動(dòng)主備的keepalived驗(yàn)證

nginx.sh?腳本?備機(jī)可以不用定義腳本相關(guān)選項(xiàng)

#!/bin/sh

# check nginx server status

NGINX=/usr/local/nginx/sbin/nginx

PORT=80

nmap localhost -p $PORT | grep "$PORT/tcp open"

#echo $?

if [ $? -ne 0 ];then

$NGINX -s stop

$NGINX

sleep 3

nmap localhost -p $PORT | grep "$PORT/tcp open"

[ $? -ne 0 ] && /etc/init.d/keepalived stop

fi

把腳本加上執(zhí)行權(quán)限后放到/opt/目錄下

總結(jié)

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