nginx+keepalived

vi /etc/keepalived/keepalived.conf
global_defs {
notification_email {
abc@abc.com
}
notification_email_from abc@abc.com
smtp_server mail.abc.com
smtp_connect_timeout 30
router_id LVS_DEVEL
}

vrrp_script chk_nginx {
script "/etc/keepalived/chk_nginx.sh"
interval 2
weight 2
}

vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 101
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
chk_nginx #监测nginx进程状态
}
virtual_ipaddress {
172.16.33.123
}
}

vi /etc/keepalived/chk_nginx.sh
#!/bin/sh
# check nginx server status
NGINX=/usr/local/nginx/sbin/nginx
PORT=80

nmap localhost -p $PORT | grep "$PORT/tcp open"
if [ $? -ne 0 ];then
/etc/init.d/keepalived stop
fi