How to detect if X latest items are increasing on Zabbix 5?

[lbon]

I have created an item that pulls number of messages from a queue. I want to monitor if this queue is not decreasing. I cannot find the correct trigger for this. Anyone?

[lbon]

No solutions?

[PeterZielony]

you can have a go with

monoinc(/host/key,(sec|#num)<:time shift>,<mode>)


https://www.zabbix.com/documentation...istory#monoinc

I've got few things I wanted to set this up with but had no chance yet to configure this function but it should suit your needs.

You can set [HASHTAG="t19"]num[/HASHTAG] to 2 to compare the current with the previous value received and detect an increase in your trigger

[lbon]

Thanks... but seems only to work in Zabbix 6.

No solutions in 5?

[PeterZielony]

Oh sorry, didn't know it was introduced in 6




try it maybe like this :
max(#3)-min(#3)>0

this will detect if max and min differences are bigger than 0 between last 3 values (it picks the biggest and smaller value). This will get your trigger up. It might not be correct syntax but you can work out this logic

[Semiadmin]

You may create for an item (for example, queue) a dependent one (for example, queue_delta) with simple change in preprocessing and compare number of values per period.
The idea is that the values of the dependent item with a negative change will be discarded.
There is a small problem that the trigger condition will be calculated when the master-item receives a new value, and the dependent one does not yet.
Therefore, it is necessary to add a small delay to the trigger. I assume that the update interval is at least a minute.
Problem: queue.count(1h)<>queue_delta.count(1h) and queue.nodata(30)
Recovery: queue.count(1h)=queue_delta.count(1h)
If you need to monitor a continued growth (like monoinc() in strict mode), use queue_delta.count(1h,0,ne)