Agent.Ping (Passive) item is configured on Zabbix Server (2.0.5) with update interval of 60 seconds. The trigger expression is
{Hostname:agent.ping.nodata(3m)}=1
Once or twice in a day it generate false Alerts related to nodata for agent.ping. During this time, MySQL's slow query log file shows 20 to 100 sec query time (for rest of the time, MySQL statistics remains at optimum).
Its a large scale deployment and false alerts related to Agent.ping nodata() really impacting the response to other alerts.
Please suggest some solution.