Clear Zabbix Dashboard when a problem has been resolved with Ok

[henspro]

Hey Community,
Kindly assist me resolve clearing of problems/triggers on the dashboard.

--------Scenario--------------------------

I have an on premise zabbix server running alongside postgres monitoring close to 300 hosts.
The server is 12 core with 30Gb of RAM.
When I check on the dashboard, zabbix still displays the host as being unreachable but when I ping it, It shows that is responding.
I need guidelines so that when a problem is resolved, the host automatically cleared off the dashboard.
Thanks

[niveastn]

Hey there.

What is the time between checks?
A problem is only resolved if the value in the check =! threshold.
What happened to me in the past is that an item would check, alert and then not be able to collect after that (no data was normal for those items). What I did was add nodata function, like this


expression: {SERVER:item.last()}=<some-number> and {SERVER:item.nodata(360)}=0

recovery expression: {SERVER:item.last()}=<some-number> or {SERVER:item.nodata(360)}=1

Hope I could help you