Unique host prototype names with macros

[markfree]

Hey guys.

I'm creating a discovery rule with a host prototype, and I'm looking for a good way to add a unique host name for each discovered host.
Each original host has a master item that returns only two values per object. Something like this:

[{
    "NAME":"QMNAME1",
    "STATUS":"Running"
},
    (...),
{
    "NAME":"QMNAME2",
    "STATUS":"Running"
}]

The host prototype uses the LLD macro {#NAME} to create new hosts. However, some of these names are repeated on other hosts.

I first thought of using the built-in macro "{HOST.HOST}" followed by the discovery macro {#NAME}, like "{HOST.HOST} - {#NAME}". This way, each newly discovered host would have a unique name.


Unfortunately, built-in macros are not supported for host prototypes names.

So, I'm wondering if there's another way to append a unique value from the original host to the discovered host names.

Any thoughts on this matter?

[aigars.kadikis]

A workaround can be to create a script to populate value from {HOST.HOST} in a user macro {$HOST.HOST}. This video describes how to do that:

https://www.youtube.com/watch?v=eIUpuxScFoU

There is a template to install and maintain these values in long term:

https://github.com/aigarskadikis/poc/blob/44f5e0c799917a3509fe0072d19a530adb579d40/7.0/install-maintain-HOST.HOST-macro-host-level-Zabbix-API/install-maintain-HOST.HOST-macro-host-level-Zabbix-API.yaml

After that, it's possible to inject extra JavaScript preprocessing for LLD rule:

var jsonData = JSON.parse(value);
lenghtOfArray=jsonData.length;

var lld = [];

for(var el = 0; el < lenghtOfArray; el++) {

row = jsonData[el];
row["{#HOST.HOST}"] = '{$HOST.HOST}';
lld.push(row);

}

return JSON.stringify(lld);

In the output, it will give:

​
[{
"NAME":"QMNAME1",
"STATUS":"Running",
"{#HOST.HOST}":"hostOriginOfLLD"
},
..