1.每台DC上都有如下监控项，监控DNS请求数量

 

2.将同一办公区的多台DC放到同一个HostGroup中“DC_BJOFC”

3.在一台不相干的Host上新建聚合item，如下，这样可以将多台DC上的该监控项值求和

grpsum[DC_BJOFC,"perf_counter[\DNS\UDP Query Received/sec]",last,0]

 

 

 

 参考：https://www.cnblogs.com/itzgr/p/9962908.html

https://blog.whsir.com/post-2016.html

https://www.zabbix.com/documentation/3.2/en/manual/config/items/itemtypes/aggregate