Create trigger on Web monitoring with error

[hzl1984]

Hi, all,

I have a problem with creating a trigger on any web monitor item.
When I created the trigger, the Expression table always tells me that "Unknown host item, no such item in selected host". However, I created it just following the instruction (http://www.zabbix.com/documentation/...web_monitoring). My expression is "{Zabbix Server:web.test.time[Zabbix fronted,Log in,resp].last(1,1)}>12".

But any other trigger I created works fine. e.g. "{Zabbix Server:system.cpu.num.last(0)}=12".

P.S. I am using Zabbix version 1.8.4.

Can anyone help me? Thank you very much!

[hzl1984]

somebody helps me?

[JBo]

Hi,
Your trigger expression is

{Zabbix Server:web.test.time[Zabbix fronted,Log in,resp].last(1,1)}>12

Are you sure that it is "Zabbix fronted " and not "Zabbix frontend" ?
What are you trying to evaluate with "last(1,1)" ?
Why don't you use last(0) ?

Regards,
JBo

[hzl1984]

Hi,
Your trigger expression is

{Zabbix Server:web.test.time[Zabbix fronted,Log in,resp].last(1,1)}>12

Are you sure that it is "Zabbix fronted " and not "Zabbix frontend" ?
What are you trying to evaluate with "last(1,1)" ?
Why don't you use last(0) ?

Regards,
JBo

Hi JBo,

Great thanks for your reply.
The name "Zabbix fronted" maybe my typo. But the trigger expression item is not written by me, it is selected in the item list. I think it would not be mismatch.
On the other hand, I used last(0) to replace, while the expression still tells me the same error above.

The attach file shows the error I encountered. FYI

[JBo]

Hi,

I have set up an Web test that closely match yours.
I get the same error message in popup (see first attached screenshot).

However, if I save it and check in Monitoring/Triggers the trigger is OK (see second screenshot).

Probably a bug in PHP frontend.
I think you can ignore it, your trigger should work.

Feel free to report it on bugtracker.

Regards,
JBo

[hzl1984]

Hi,

I have set up an Web test that closely match yours.
I get the same error message in popup (see first attached screenshot).

However, if I save it and check in Monitoring/Triggers the trigger is OK (see second screenshot).

Probably a bug in PHP frontend.
I think you can ignore it, your trigger should work.

Feel free to report it on bugtracker.

Regards,
JBo

Hi JBo,

Got it! Thank you very much!

Best Regards