Keepalibed监控nginx

配置Keepalived监控nginx

--wang

目的：

通过Keepalived实现对nginx的监控，每两秒扫描一次，如果nginx关闭，尝试重启nginx，两秒后检查nginx是否启动，如果还没有启动，就关闭Keepalived。

配置文件：

/etc/keepalived/keepalived.conf

注意事项：

脚本一定要开启执行权限chmod  +x  /root/shell/nginx_check.sh

脚本内容：

[root@CRS_LH_LoadB ~]# vim /root/shell/nginx_check.sh

#!/bin/bash

time=`date '+%Y%m%d %H%M%S'`

#echo "${time}test script">>/root/shell/test.txt #用于判断脚本是否正常执行，可以注释掉

systemctl status nginx>>/dev/null

if [ $? -ne 0 ] ; then

systemctl start nginx

sleep 2

if [ $? -ne 0 ] ; then

systemctl stop keepalived>>/dev/null

fi

fi

实际配置文件：

主：

global_defs {

router_id Haproxy_HA_m

}

vrrp_script chk_nginx {

script "/root/shell/nginx_check.sh"

interval 2

}

vrrp_instance VI_1 {

state MASTER

interface ens160

virtual_router_id 58

priority 100

advert_int 1

nopreempt

authentication {

auth_type PASS

auth_pass 1111

}

virtual_ipaddress {

192.168.100.180

}

track_script {     #调用脚本

chk_nginx

}

}

备：

global_defs {

router_id Haproxy_HA_b

}

vrrp_script chk_nginx {

script "/root/shell/nginx_check.sh"

interval 2

}

vrrp_instance VI_1 {

state BACKUP

interface ens160

virtual_router_id 58

priority 80

advert_int 1

nopreempt

authentication {

auth_type PASS

auth_pass 1111

}

virtual_ipaddress {

192.168.100.180

}

track_script {     #调用脚本

chk_nginx

}

}