Trigger to compare text

[bernard]

Hello,

I want to do something like:

({host:list_partition[].last(#1)}={host:list_partition[].last(#2)})&({host:list_partition[].last(#1)}#{host:list_partition[].last(#3)})

Or more simple : function change with 3 checks (last, previous, pre-previous) values

list_partition return text as "C: D: E:" (on windows hosts) and "/ /tmp /var" (on linux hosts)

I want to get a trigger to fire when the change is two time consecutive.

But it doesn't work because functions return numeric values only, and comparaison function works only with last and previous value.

New function strlen will not work because if my list_partition change from "C: D:" to "C: E:" I won't be able to view the change (length is the same).

How can I do that?

Many thanks for your help

[bernard]

No idea at all ?

[marcel]

something like

{last(0)=last(1)}&{last(0)#last(2)}

dont you want to implement the hysteresis using actions?

[bernard]

Thanks for your suggestion, I will try.

I don't want to implement the hysteresis, but I want to have two consecutive value different from the third value to fire the trigger.

Example:
if returned data are 0 - 1 - 5 - 1 - 0 I don't want an event
if returned data are 0 - 1 - 1 - 4 - 0 I want an event because I have twice "1".

[bernard]

Still doesn't work.
My expression is:

({host:list_partition[].last(#1)}={host:list_partition[].last(#2)})&({host:list_partition[].last(#1)}#{host:list_partition[].last(#3)})

value returned is: C: F:

But expression evaluation doesn't work. I have the error:
Format error or unsupported operator. Exp: [C: F:]
Expression [(C: F: =C: F: )&(C: F: #C: F: )] cannot be evaluated: Format error or unsupported operator. Exp: [C: F:]

Any idea to do that ?
Regards,
Bernard

[Gert Vanderstukken]

I have a simular problem.
I want to comare the last value to an earlier value (not the previous).

If I do this with number-fields, everything is OK.
Even string values that contain numbers are OK, but if I compare text fields that conatin only "real text" (no numbers) it fails.

so:
comparing:
4560 = 4560 works
test5 = test5 works
te5st = te5st works
test = test doesn't work

I run 1.8.4 (I had the same problem on 1.8.3)

[bernard]

Feature request opened

A new feature request has been open about this case.

ZBXNEXT-702

Today this kind of check is not possible.