Trigger after x number of samples

[bytesize]

Hi,

I would like to create a trigger which only activates once a specified number of samples have registered as true. For example, this expression:

{__Items_Critical_Websites:http.last(2)}=0

...should only trigger after two samples (of 30 seconds apart) have failed consecutively.

Is this possible? Thanks!

John

[Alexei]

{__Items_Critical_Websites:http.max(30)}=0

[bytesize]

Hi Alexei,

Thanks for the reply, but I don't think Max will do what I'm after.

Basically I only want an alert generated if the status of a website is "0" over 60 seconds. I sample the website every 30 seconds, so I only want the Zabbix trigger to action if two samples have both returned 0, one after the other. Without this I get false positives if I couldn't contact the website on one occasion.

So, if I get these samples (every 30 seconds):

1 0 1 (Zabbix trigger = false)
0 1 0 (Zabbix trigger = false)
1 0 0 (Zabbix trigger = true)

Can this be done?

Thanks!

John

[Alexei]

Sorry, I meant {__Items_Critical_Websites:http.max(60)}=0

[bytesize]

Hi Alexei,

I have probably got confused here, but according to the documentation, max is "Maximal value for period of time. Parameter defines length of the period in seconds."

So if I understand correctly the parameter above would become true even if there was only one sample out of two which returned 0?

I actually only want the trigger to action if both samples return 0, not just one sample within 60 seconds. Something which functions like this:

({__Items_Critical_Websites:http.last(0)}=0)&({__Items_Critical_Websites:http.prev(0)}=0)

I hope this makes sense! Thanks!

John

[Alexei]

{__Items_Critical_Websites:http.max(60)}=0:

Come on :) The expression will activate a trigger if all values will be equal to zero within last 60 seconds. That's exactly what you want!

0sec | 30 sec | 60 sec
001 - FALSE
010 - FALSE
100 - TRUE

[bytesize]

Thanks Alexei - I'll stop being dumb now!

Great work with Zabbix; its miles better than any systems monitoring tool I have used before!

John