Update Interval Zabbix Trapper

[stkr]

Hello,

when I create an item, i can choose as "type" the value "Zabbix Trapper". If I do so, there is no field to type in the update interval. When finished, in the overview there is shown an update interval with 30seconds . How can I change this value?

Version: 1.1.6

Thanks for your answers.
stkr

[James Wells]

Greetings,

when I create an item, i can choose as "type" the value "Zabbix Trapper". If I do so, there is no field to type in the update interval. When finished, in the overview there is shown an update interval with 30seconds . How can I change this value?

Zabbix Trapper is a passive check, meaning the server does not query anything, instead it tells the Zabbix Server to listen for something else to send the data. Because of this, it makes no sense to set an update interval. Now, what I suspect you are really worried about is how to trigger of the server does not receive data. That can be done using the nodata() comparison. For example;

{HOST:KEY.nodata(300)}=1

This trigger will fire if the Zabbix Server does not receive the key data for 300 seconds (5 minutes).

[stkr]

Hello James,

thank you for your answer. The nodata() function is very useful. But what I want so say, when you create an item with type Zabbix Trapper, you will see in the overview (after saving) the column "update interval" with 30sec, though you don´t set this value. So is this a default value? Maybe it is a little design mistake.

And there is one question about this. The nodata() function must have an "update interval", because the Trigger with this function must validate whether the result have changed. So where can I see this update intervall? And can I change it?

I hope my question isn´t so cryptical

thanks a lot for your answers
stkr

[medic]

stkr, SNMP-Traps are "signals" send via SNMP by the Host you monitor.

the "update-interval" you see, is because of the templates which are used. It has no meaning, because there is no "update interval" ..

your server may send an SNMP-Trap once a day, once every minute, or even only in case of a critical failure.

zabbix_trapper just recieves this Trap, and you configure, what this trap means, no more, no less.

[James Wells]

But what I want so say, when you create an item with type Zabbix Trapper, you will see in the overview (after saving) the column "update interval" with 30sec, though you don´t set this value. So is this a default value? Maybe it is a little design mistake.

30 is just a default, if an interval is not set. Because you are using Zabbix Trapper, the Zabbix Server will ignore the interval. Personally, I tend to set these manually, by editing the DB, but that is only for aesthetic reasons.

And there is one question about this. The nodata() function must have an "update interval", because the Trigger with this function must validate whether the result have changed. So where can I see this update intervall? And can I change it?

nodata() is a trigger function that says, if the server does not receive data in X seconds, then set true. This function is only valid when you use Zabbix Trapper or Zabbix Agent (Active) mode. To use it with either of these, you simply set X to the number of seconds you want to test for. So for example, if you want to trap to see if you get item foo, and want to trigger if you don't get it for 5 minutes, you would create the following trigger;

{HOST:foo.nodata(300)}=1

[Alexei]

Just a small correction. The limitation was for previous versions of ZABBIX. Currently function nodata() works for all items regardless of their type (ZABBIX Agent, ZABBIX Agent (active), Trapper, any) in both 1.1.x and 1.3.x.

[stkr]

thx all for your answers.

stkr

[vins]

the "update-interval" you see, is because of the templates which are used. It has no meaning, because there is no "update interval"

this is not 100% correct.

i've done some tests and i see when a zabbix trapper item activates a trigger, it keeps activated until "update interval" occurs, and then, trigger alarm vanishes.