Zabbix. How use function as of parameter another function

[Actimele]

Idea use computed property to get difference between first day of month and current. I use formula:

last("prtMarkerSuppliesLevel.1.2") - last("prtMarkerSuppliesLevel.1.2", dayofmonth("prtMarkerSuppliesLevel.1.2") )

first part work properly, but then i use dayofmonth i get error

Cannot evaluate expression: unexpected token at ")".

What is wrong?

[kaspars.mednis]

Hi,

Sorry, but you can not use last function in such way, it does not support another last function as argument

the possible workaround - just create an item with scheduled interval :

https://www.zabbix.com/documentation/3.4/manual/config/items/item/custom_intervals

interval will be something like this:

md1h0m0	every 1st day of each month at 0:00

This value will be collected only once a month and will represent your prtMarkerSuppliesLevel at the begining of the month.

then you can use last(your.current.item) - last(scheduled.item)

Regards,
Kaspars

[Actimele]

Thx for reply