Nested discovery/LLD from JSON data

[lolstrup]

Hi,

I have a situation where I need 2-3 levels of LLD.
The data structure is like so:

1. Installation A
   1. Communicator A
      1. Device 1
      2. Device 2
      3. Device 3
   2. Communicator B
      1. Device 4
      2. Device 5
2. Installation B
   1. Communicator C
      1. Device 6
      2. Device 7
      3. Device 8

And so on.
We need to monitor up/down status of each communicator and device.
I retrieve everything from a JSON API separately, i.e.:

1. Get installations
2. For each installation, get communicators
3. For each communicator in installation, get devices

Each step also contains the up/down state.

I know how to do this in a single dimension, but I can't seem to figure out the best way to do it for a nested/cascading structure.
Is my only option to have each installation as a separate host?

[lolstrup]

I managed to solve this by adding a Discovery Rule on the main host, with a Host Prototype that spawns virtual hosts for each Installation.

It applies a template I made, with Discovery Rules for Communicators and Devices, which uses the parent host interface.
I had to make "master" items for both, do the discovery based on that, and make Dependent Item Prototypes to extract information from the JSON blob.

I didn't manage to make it cascading, but I realized my data doesn't really have a relationship between Communicator and Device, so that made the job much easier.

[jameskirsop]

lolstrup, glad you got something working - but you might want to vote for this request to make life easier in the future, should it get accepted and pushed into a release: https://support.zabbix.com/browse/ZBXNEXT-1527

[dimir]

https://support.zabbix.com/browse/ZBXNEXT-1527 is almost ready, stay tuned!

[lolstrup]

https://support.zabbix.com/browse/ZBXNEXT-1527 is almost ready, stay tuned!

Sounds great. We are looking forward to this!