Item is a string list from user parameter, can I graph of display the values ?

[gerard-wl]

Hello to all,

My command showList produces a short list of sellers like this :

Peter 45
Cathy 70
Fred 0
...
Oliver 30


The configuration could be :

UserParameter=sellers,showList

How can easily display this item in a graph or in a table with Zabbix ?

Thank you!

[Hamardaban]

Use dependent items (type integer).

https://www.zabbix.com/documentation/current/en/manual/config/items/itemtypes/dependent_items

[gerard-wl]

Thank you Hamardaban , not obvious to use in my case ... I'll try to do ...

[cyber]

Graph requires numbers. Your datais not numbers, but a name/value pairs. You can split it up into separate items, based on name (as suggested) and your saved data is now numbers... and with numbers you can draw a graph...

[gerard-wl]

Than you cyber I've managed to get an apache server uptime as described in the documentation
But in my case, I don't know a priori the list of vendor names, they can be 100 or 1.000, some new ones may appear and others may disappear, so I can't create a dependent item via a regexp per vendor ...

[cyber]

Than you cyber I've managed to get an apache server uptime as described in the documentation
But in my case, I don't know a priori the list of vendor names, they can be 100 or 1.000, some new ones may appear and others may disappear, so I can't create a dependent item via a regexp per vendor ...

Then you need to turn to "LLD" and let it create needed items for you.. https://www.zabbix.com/documentation...evel_discovery.

[gerard-wl]

I see cyber , I'm going to try
Can I use userparameter (I can format in json if necessary) to feed LLD ? Or any other method ?

[gerard-wl]

My test :

UserParameter=discovery.aaa.bbb, /var/tmp/ab/jsonmake

#cat /var/tmp/ab/jsonmake
#!/bin/sh

echo '{ "data": [
{
"{#SELLER}": "Peter",
"{#RESULT}": "45",
},
{
"{#SELLER}": "Cathy",
"{#RESULT}": "70",
} ]
} '

#
#/usr/sbin/zabbix_agent2 -t discovery.aaa.bbb
discovery.aaa.bbb [s|{ "data": [
{
"{#SELLER}": "Peter",
"{#RESULT}": "45",
},
{
"{#SELLER}": "Cathy",
"{#RESULT}": "70",
} ]
}]
#




But nothing in latest data received ...

What is missing for me to see 'Peter', 'Cathy', .... 'Oliver' as items and their associated score ?

[Hamardaban]

Your json for LLD looks fine
(by the way, in new versions, you can not use "data:" in the name of the array - use just array [{},{},{}] ).
Show how you made item prototypes?

[gerard-wl]

Than you Hamardaban ok I change the script and remove "data".
I didn't create anything else, it's my question, what must I create presicely (item prototype?), I'm quite a newbee in LLD

[Hamardaban]

Yes - you need to describe the item prototypes in order for them to be created.
Everything is written in detail in the documentation:

https://www.zabbix.com/documentation/current/en/manual/discovery/low_level_discovery

[gerard-wl]

Please what item prototypes do I have to create for this simple case ? I can't do it please.

UserParameter=discovery.aaa.bbb, /var/tmp/ab/jsonmake

#cat /var/tmp/ab/jsonmake
#!/bin/sh

echo '[
{
"{#SELLER}": "Peter",
"{#RESULT}": "32"
},
{
"{#SELLER}": "Cathy",
"{#RESULT}": "750"
}]'

# /usr/sbin/zabbix_agent2 -t discovery.aaa.bbb
discovery.aaa.bbb [s|[
{
"{#SELLER}": "Peter",
"{#RESULT}": "32"
},
{
"{#SELLER}": "Cathy",
"{#RESULT}": "750"
}]]




The discovery rule with key discovery.aaa.bbb is created

But what are the few steps to complete ?

[Hamardaban]

pls read & understand: https://www.zabbix.com/documentation...tem_prototypes

[gerard-wl]

Hello Hamardaban i've read it more than 10 times
So i created this item prototype for my rule :
name: result of users
type: zabbix trapper
key: result["{#SELLER}"]
other fields : default
In the host configuration, i can see 2 items:

result["Peter"]

and

result["Cathy"]

type trapper
---
In the latest data, I can see 2 lines with name "result of users", last check, last value, and change are empty, despite the discovery rule has a period of 1m
So I'm missing something to see result["Peter"] and result["Cathy"] constantly updated in these lastest data, since the script /var/tmp/ab/jsonmake (here static) will be in fact dynamic with new values for the "{#RESULT}" field, no?

[Hamardaban]

You missed the following: there are 2 independent processes - the first is LD (creates items, etc.) and the second is getting data into the created items.
You, as the "creator" of the system, determine what and how you will receive \ take.
What can I offer?
You already have a script creating json with data. well.
1) Create an item (A, text) that will access the script and receive json (like current lld)
2) Change the LLD rule you created so that it is dependent items from previously created items A.
3) in LLD, create "item prototypes" also dependent on A with jsonpath preprocessing

When "main" item receives the data, the LD rule will work first and create items. In the future, when the data is received by the main items again, the dependent ones (created from prototypes) will also receive the data.

Here is an example: https://www.zabbix.com/documentation...ed_filesystems

Look at how the official zabbix templates are made- such constructions are constantly used there.

[gerard-wl]

Heum I'm not sure to understand your advices Hamardaban
I understand you are a specialist in zabbix, and I feel it clearly, but you speak about the general case of creating 2 processes, your level of knowledge and theory probably seems high but I can't bring them closer to my case
Could we be pragmatic for my case ? I think it will be better to understand the missing steps
What is missing here and not elsewhere ?
Could you describe the steps (in zabbix gui terms), one by one, which will allow me to see refreshed sellers' results in latest data ?
I can also use a zabbix sender instead of userparameter, without knowing precisely if one or the other is essential to define this LLD rule ...
I think I'm going to have this click to understand everything in LLD rule, but I don't have it yet, and completing this example is a good exercise in my eyes