nginx+keepalive实现web服务器高负载

1.直接用yum下载安装：

yum install-y keepalived

配置 163

global_defs {
	router_id nginx_master
	script_user root
	enable_script_security
}
vrrp_script chk_nginx {
	script "/etc/keepalived/check-nginx.sh"
	interval 2
	weight 2
}
vrrp_instance VI_1 {
	state MASTER
	interface ens192
	virtual_router_id 163
  mcast_src_ip 10.23.1.163
  priority 100
  nopreempt advert_int 1
  authentication {
		auth_type PASS
		auth_pass 1111
	}
	track_script {
		chk_nginx
	}
	virtual_ipaddress {
		10.23.1.100
	}
}

164服务器

!Configuration File for keepalived
global_defs {
	router_id nginx_backup
	script_user root
	enable_script_security
}
vrrp_script chk_nginx {
	script "/etc/keepalived/check-nginx.sh"
	interval 2
	weight 2
}
vrrp_instance VI_1 {
	state BACKUP
	interface ens192
	virtual_router_id 163
	mcast_src_ip 10.23.1.164
	priority 90
	advert_int 1
	authentication {
		auth_type PASS
		auth_pass 1111
	}
	track_script {
		chk_nginx
	}
	virtual_ipaddress {
		10.23.1.100
	}
}

 

nginx

#!/bin/bash



check_nginx () {

    nginxpid=`ps -C nginx --no-header | wc -l`

    if [ $nginxpid -eq 0 ];then

        /usr/sbin/nginx

        sleep 1

        nginxpid=`ps -C nginx --no-header | wc -l`

        if [ $nginxpid -eq 0 ];then

            killall keepalived

        fi

    fi

}



check_nginx

 

虚拟ip为10.23.1.100