how to use Aggregated checks!

[dagun]

I find that the zabbix manual does not give example for "Aggregated checks".
Who can give me example?Thanks. I had tried it ,but failed.

[Alexei]

http://www.zabbix.com/documentation/...regated_checks

[dagun]

Hi ,Alexei

http://www.zabbix.com/documentation/...regated_checks

I seem to understand that "aggregated checks" does not use for checking remote database.It only uses for zabbix server collects aggregate information by doing direct database queries.It query somethings from its database.
I miss it, sorry.

[dagun]

Hi ,Alexei

I had tried it .but I get nothing. It give me message is "no valuses".The zabbix_server.log is :No values for group[Mysql Server] key[vfs.fs.size[/,free]]

Aggregated checks is only use for querying something from "zabbix database"?