Low Level Discovery with dependent item

[muelli]

Hello forum,

I have a little problem with a LLD and dependent items.
First of all, my discovery delivers me a JSON like this:

[
  {
    "{#FIELD}": "test0",
    "{#KEY}": 1111
  },
  {
    "{#FIELD}": "test1",
    "{#KEY}": 2222
  },
  {
    "{#FIELD}": "test2",
    "{#KEY}": 3333
  },
  {
    "{#FIELD}": "test3",
    "{#KEY}": 4444
  },
  {
    "{#FIELD}": "test4",
    "{#KEY}": 5555
  }
]

Then I created an item prototype that uses {#KEY} of each {#FIELD} to get more information (JSON output) about each FIELDs.
That works, and I can see these different FIELD data for each KEYs appear in latest data.

That additional output looks like this:

{
  "version": "1",
  "running": "true",
  "status": "OK",
  "errors": 0,
  "internal": 0
}

However, now I want to parse that text output by using a dependent item and get the info using json paths.
I have done this multiple times before, but not with discovery rules. Strange thing is, I do it the same way as before, the items wont show up in latest data.
I create the item as usual, type "Dependent item", select my master item (in this case the prototype), use a json path in preprocessing and nothing shows up.

Am i missing something?
Any help is appreciated!

[muelli]

In the host configuration I cannot see any items. Maybe in Zabbix 6.0 those dont show anymore?

edit: Oh OK, I think I found the screen you meant, but there are not depentent items as well. I can see the discovered master items but nothing else :/

edit 2: aaaand by clicking on discovery rules in the screen I now found an exclamation mark/not supported!
it is really strange, because the error it shows is "cannot find the data array in the received json object".
That I do not really understand, because
a) the data array is not needed anymore, according to the documentation
b) the discovered data is clearly parsed correctly!

however I fill try to reformat the discovery answer to include the json data object and see what happens

edit 3: updated to LTS 6.0.4 and the error still shows up.

edit 4: OK, someone changed the discovery script during the night (automated restore) and that is why the exclamation mark is showing now.
Sorry for the mixup, I will have it restored and then check the host config page again for the exclamation mark :/

edit 5: Now the exclamation mark is gone. I re-did the steps and created a dependent item prototype again, and then a new exclamation mark pops up, telling:
Cannot create item: item with the same key "item.for.testing" already exists

That is the real problem, I now named the item "item.for.testing.[{#MODULE}] and the item showed finally up.

Thanks max. for the hint with the host config page.

[muelli]

For testing purpose I created a dependent item without any preprocessing (this should give the original item data) and this does not show up as well.
I guess either I am too stupid (possible) or this is a bug in zabbix or it is just not able to do what I want

[max.]

Hello,

Does your field have an update interval? Dependent items populates only when master receives new data.

Regards

[muelli]

Update Intervall is set to 1m in the master item.

[max.]

which type are both your items? have you checked if the dependent item is in unsupported state?
try to create another dependent item with no preprocessing steps

[muelli]

Both items are type text.
the dependent item does not show up at all in latest data! Normally if sth is unsupported I can see that red warning sign and an error text, but here...nothing.
I already tried creating a basic dependent item with no preprocessing, got nothing as well.

[max.]

Check the status of the item in the host configuration

[muelli]

In the host configuration I cannot see any items. Maybe in Zabbix 6.0 those dont show anymore?

edit: Oh OK, I think I found the screen you meant, but there are not depentent items as well. I can see the discovered master items but nothing else :/

edit 2: aaaand by clicking on discovery rules in the screen I now found an exclamation mark/not supported!
it is really strange, because the error it shows is "cannot find the data array in the received json object".
That I do not really understand, because
a) the data array is not needed anymore, according to the documentation
b) the discovered data is clearly parsed correctly!

however I fill try to reformat the discovery answer to include the json data object and see what happens

edit 3: updated to LTS 6.0.4 and the error still shows up.

edit 4: OK, someone changed the discovery script during the night (automated restore) and that is why the exclamation mark is showing now.
Sorry for the mixup, I will have it restored and then check the host config page again for the exclamation mark :/

edit 5: Now the exclamation mark is gone. I re-did the steps and created a dependent item prototype again, and then a new exclamation mark pops up, telling:
Cannot create item: item with the same key "item.for.testing" already exists

That is the real problem, I now named the item "item.for.testing.[{#MODULE}] and the item showed finally up.

Thanks max. for the hint with the host config page.