zabbix_sender item trigger changes to UNKNOWN immediately

[eger]

I have a trigger setup for an item that is received through zabbix_sender. The sender sends the item every 6 hours.

I created a simple trigger for if the last(0) value of the item is >0 to trigger. It worked as expected to trigger a problem. But then the trigger changes to 'UNKNOWN' and the status is grey in the overview.

I use the overview on a screen to easily see a list of hosts and which triggers might be having an issue at a glance. I was under the impression the trigger would stay in PROBLEM state until the next received value was 0.

How can this be achieved?

[johansen]

hi,

I have the same problem with the following trigger:
{_hostname_:log[/tmp/cm.out,ERR].str(ERR)}=1

the activation of the trigger is working but then the status goes to UNKNOWN. can someone help us out??

[simonc]

see the zabbix doc :

This may happen because of several reasons:
- server is unreachable
- trigger expression cannot be evaluated
- trigger expression has been recently changed

[johansen]

thanks for the reply.

... and what do you suggest to do in the case that the trigger expression cannot be evaluated?

[simonc]

You could try to check the zabbix log (agent and server). Enable debug mod if necessary.

Try the zabbix_get command line to check if your item get data.

Wich version of zabbix do you use ?

[johansen]

we use zabbix_agent 1.4.6 and server version is also 1.4.6.