keepalived+Nginx实现高可用集群配置

 127.0.0.1   KEEPALIVED_NGINX_MASTER

192.168.214.99

! Configuration File for keepalived
global_defs {
   notification_email {
     acassen@firewall.loc
     failover@firewall.loc
     sysadmin@firewall.loc
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 192.168.200.1
   smtp_connect_timeout 30
   router_id KEEPALIVED_NGINX_MASTER
   vrrp_skip_check_adv_addr
   # vrrp_strict
   vrrp_garp_interval 0
   vrrp_gna_interval 0
}
vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.214.99
    }
}

127.0.0.1   KEEPALIVED_NGINX_BACKUP

global_defs {
   notification_email {
     acassen@firewall.loc
     failover@firewall.loc
     sysadmin@firewall.loc
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 192.168.200.1
   smtp_connect_timeout 30
   router_id KEEPALIVED_NGINX_BACKUP
   vrrp_skip_check_adv_addr
   # vrrp_strict
   vrrp_garp_interval 0
   vrrp_gna_interval 0
}
vrrp_instance VI_1 {
    state BACKUP
    interface ens33
    virtual_router_id 51
    priority 50
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.214.99
    }
}

#!/bin/bash
echo 'xxxxxx'
count_nginx=`ps -ef|grep -w nginx|grep -v grep|wc -l`
echo $count_nginx
if [ $count_nginx -eq 0 ];then
    systemctl start nginx.service
    sleep 2
    if [ `ps -ef|grep -w nginx|grep -v grep|wc -l` -eq 0 ];then
        systemctl stop keepalived.service
    fi  
fi

vrrp_script chk_http_port {
 script "/shell/nginx_check.sh" #脚本地址
 interval 2 #检测脚本执行的间隔
 weight 2 #比重
}