Triggers from two different hosts with and condition

[hserna]

Hello

I've got Zabbix 7.2 running with next inventory

Two test hosts that receive information thru SNMP.
The current test that I've got simulate both hosts (The zabbix server and test hosts run in the same VM)
Each host has a private trigger that is fired by a TRAP received
There is a shared trigger that should be fired when private trigger at HOST_A and B is fired.

The triggers with simple expression works fine, but the trigger with logical and conditions not.

I attached the screenshot with my environment.

The shared trigger is TRIGGER_G

The Trigger at host_A is TRIGGER_HOST_A, and obiously the trigger at host B "TRIGGER_HOST_B"

The attached pictures shown the status that singles trigger are fired, but shared fired not.

Why TRIGGER_G is not fired?

Best regards

[Brambo]

The .last examples from chatgpt are wrong if you use a zabbix 6.x or higher.
The help is very clear in this: https://www.zabbix.com/documentation...pes/calculated
Function (which goes in the formula section) most of the time you could use the same syntax as that from triggers.

And sorry but if you aren't looking in the manual what are you trying to build.

[hserna]

I forgot to add the picture with details of trigger TRIGGER_G

[Brambo]

I think there are multiple ways to solve it. However the one you could do is.
Create on 1 of the host or a separate virtual one a calculated item which either does the sum of both or you create 2 of them (1 for each host) and then use these 2 calculated items the triggers.
I use this in a 3 nodes setup and combined with a macro which provides the value of the amount of nodes all calculations are done.
However the code for that isn't something I could easily share without exposing certain company details.

[hserna]

Hello

I was working these days trying to solve my problem at several ways but none worked for me.

First one trying to evaluate two business conditions at trigger level (The pictures that I attached at begining of the post).

Second with trigger dependencies, same result.

The last way that I'm working is create a trigger for each host, and at each one only evaluate their own condition.

My idea is on virtual host create a trigger an evaluate de status of both trigger FAIL or INFO.

On HOST_A
TRIGGER NAME HOST_A_ALFADISC
find(/HOST_A/snmptrap[],,"regexp","hrDeviceKeyboard.*ALFADISC"")=1

On HOST_B
TRIGGER NAME HOST_B_ALFADISC
find(/HOST_B/snmptrap[],,"regexp","hrDeviceKeyboard.*ALFADISC"")=1


The next tryout I followed is one that I found at ChatGPT

"Using Calculated Items"
Create a Calculated Item: This item will evaluate the status of the original trigger.
Go to Configuration > Hosts > Items.
Click Create item and select Calculated as the type.
Use an expression that checks the status of the original trigger. For example:
{hostname:trigger.key.last()}=1

I tried to create a calculated item on virtual host with next information:
Name: whatever
Type: Calculated
Key: {HOST_A:HOST_A_ALFADISC.key.last()}=1
Type: Numeric



When I Test the item or try to Add, the next error it's shown:
Incorrect value for field "key_": incorrect syntax near "{HOST_A:HOST_A_ALFADISC.key.last()}=1".

I would be pleased if somebody could assist me with this issue

Best regards

[Brambo]

The .last examples from chatgpt are wrong if you use a zabbix 6.x or higher.
The help is very clear in this: https://www.zabbix.com/documentation...pes/calculated
Function (which goes in the formula section) most of the time you could use the same syntax as that from triggers.

And sorry but if you aren't looking in the manual what are you trying to build.