Item Calculated

[nikola291]

I have a problem with a Calculated item.
Scenario: I have 2 hosts on which I created 1 item which gives me the total amount of bandwidth used by the host.

Item setting
Key: net.if.total[enp2s0]

Preprocessing:
Custom multiplier 8
Change per second

Everything works fine However,
I am unable to add these values Setting items calculated

I created a new host and added calculated item

Key: item.value.sum

Formula: last(/host1/net.if.total[enp2s0].value + last(/host2/net.if.total[enp2s0].value
Preprocessing: Custom multiplier 8
Change per second


result:

Incorrect value for field "Formula": incorrect expression starting from "last(/host1/ net.if.total[enp2s0]) + last(/host2/net.if.total[enp2s0].value)".

[salavie]

try this , not use XXX.value
last(/host1/net.if.total[enp2s0]) + last(/host2/net.if.total[enp2s0])

not use Preprocessing

example：

https://www.zabbix.com/documentation/6.0/zh/manual/config/items/itemtypes/calculated