Master端:192.168.2.156
! Configuration File for keepalived global_defs { notification_email { [email protected] [email protected] [email protected] } notification_email_from [email protected] smtp_server 192.168.2.156 smtp_connect_timeout 30 router_id LVS_DEVEL } vrrp_script check_nginx { script "/data/sh/check_nginx.sh" interval 2 weight 2 } vrrp_instance VI_1 { state BACKUP interface eth0 virtual_router_id 51 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.2.100 } track_script { check_nginx } }
slave端:192.168.2.157
! Configuration File for keepalived global_defs { notification_email { [email protected] [email protected] [email protected] } notification_email_from [email protected] smtp_server 192.168.2.156 smtp_connect_timeout 30 router_id LVS_DEVEL } vrrp_script check_nginx { script "/data/sh/check_nginx.sh" interval 2 weight 2 } vrrp_instance VI_1 { state BACKUP interface eth0 mcast_src_ip 192.168.2.157 virtual_router_id 51 priority 90 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.2.100 } track_script { check_nginx } }
故障轉移腳本
#vim /data/sh/check_nginx.sh
#!/bin/bash COUNT=$(ps -C nginx --no-header |wc -l) if [ "${COUNT}" = "0" ];then echo "重啓nginx" sleep 2 COUNT=$(ps -C nginx --no-header |wc -l) if [ "${COUNT}" = "0" ];then systemctl stop keepalived fi fi
# chmod a+x /data/sh/check_nginx.sh
[root@localhost ~]# crontab -e
*/1 * * * * /data/sh/check_nginx.sh >> /var/log/check_nginx.log
測試:當我們嘗試停止nghinx時,當手動停止nginx約2秒之後,此時會關閉keepalived,實現vip轉移
瀏覽器訪問瀏覽:VIP192.168.2.100即可