Problem with triggers, last 2 values

[vovam]

Hello all,

I am trying to create trigger that will trig a PROBLEM only if 2 last values equals to 0 or None

tried to do this:
{Vision-Master:netflow_check.sh["{HOST.CONN}"].str(None,#2)}=1 or {Vision-Master:netflow_check.sh["{HOST.CONN}"].regexp(^0$,#2)}=1

but it went to PROBLEM state after one None or 0

Zabbix version : 4.4

Thanks,
Vova.

[NilsA]

The way your expression is set up now means:
((last 2 values are none = true) or (last 2 values are 0 = true)) = true
If you want to have "None" and "0" interchangably, I don't think you can logically connect them into one expression in this case, since you are using .str and .regexp here.
If you don't find any better way, you can cover all 4 patterns with an expression like this:

((last 2 = 0) or (last 2 = None) or (previous #1 = 0 and previous #2 = None) or (previous #1 = None and previous #2 = 0))= true

[cyber]

The way your expression is set up now means:
((last 2 values are none = true) or (last 2 values are 0 = true)) = true

nope... str(None,#2)}=1 is true even if only one of the values is "None". Same with regexp(), its enough to have only one "0" value and whole expression is true. Both of these functions look into the given data, may be more than one value, if at least one match found, returns true.
https://www.zabbix.com/documentation...gers/functions
"If more than one value is processed, '1' is returned if there is at least one matching value."