Calculated item to summarize data from discovery items

[ecce]

I have managed to create a discovery rule and item prospects that gets data via SNMP from Cisco switches. As an example I have allocated stackpower, four switches in a stack consumes about 243 watts each. The key for the item prospects is stackpower.allocated.[{#SNMPINDEX}].

I want to sum() the values, in this case four of them, to a power consumption value for the whole switch stack. My plan was to use a calculated item for this. But the item keys has a macro in it, I'm not sure how to summarize the values in a dynamic range of items. How do I solve this?

Running Zabbix 6.4 on Linux, no proxy, collecting data via SNMPv3.

Thanks.

[cyber]

sum(last_foreach(/*/stackpower.allocated.[*]?[group="your hostgroup"]))
based on examples 1 and 2 here https://www.zabbix.com/documentation...ated/aggregate
TBH, never tried, but if they work separately, why shouldn't they work combined... :/

[cyber]

sum(last_foreach(/*/stackpower.allocated.[*]?[group="your hostgroup"]))
based on examples 1 and 2 here https://www.zabbix.com/documentation...ated/aggregate
TBH, never tried, but if they work separately, why shouldn't they work combined... :/

[ecce]

sum(last_foreach(/*/stackpower.allocated.[*]?[group="your hostgroup"]))
based on examples 1 and 2 here https://www.zabbix.com/documentation...ated/aggregate
TBH, never tried, but if they work separately, why shouldn't they work combined... :/

Worked perfectly! Thanks!

[Raoul_8]

Hello, I am having a problem with making a calculated item in a discovery rule.

I have a discovery rule for the filesystems.
Now I want to make a forecast item, which calculates how much space is used 30 minutes later.

This is the formula I have been using:
forecast(//vfs.fs.dependent[{#FSNAME},pused],30d,30m)

I get the following error:
Cannot evaluate function: item "/{HOST}/vfs.fs.dependent[{#FSNAME},pused]" does not exist at "forecast(//vfs.fs.dependent[{#FSNAME},pused],30d,30m)".

I am currently using Zabbix version 6.4.12

Thanks in advance!!

[Hamardaban]

How exactly is the item key written?
/{HOST}/vfs.fs.dependent[{#FSNAME},pused] or //vfs.fs.dependent[{#FSNAME},pused] ?
In “forecast”, you need to use exactly the same as the key.

[Raoul_8]

Thanks for the help.

I already figured it out. It did not work in the test since I used {#FSNAME} but when I use C: or another drive it works.

Sorry for my stupidity on this matter.

[Hamardaban]

You're welcome