LLD host discovery - overwrite existing host information

[mako]

Zabbix 7.0.9

I have a discovery rule, that scans an OLT (PON) via snmp (walk[OID]) and for every "child" device found (ONT/CPE) create a new host via "Host prototype" with an inherited snmp interface of the OLT.
Every new host has his own uniqe serialnumber (like a MAC-Adress) as hostname. That works fine.

I set the discovery rule, to not delete or disable generated hosts. I do not want to lose any historical data from the ONT / CPE (Host prototype).

Sometimes a device can move from on OLT to another OLT.

Now, the new OLT with the same discovery rule sees the devices in his ont table and would like to create a new host (prototype).
Cannot create host: host with the same name "xxxxhostnamexxx" already exists.
Thats true. But I like to force overwrite/update the existing ont/cpe/device withe the new interface datas instead of creating a new one.

I know, I could write a script, tha uses the API to do what I do now with the discovery rules, but first I like to ask, if somebody has an idea how to overwrite an existing host instead of creating a new one

[rpi_dwillis77]

Hello mako Did you ever figure this out? I'm having the same problem, though with a different template and host type. I have manually-added hosts that are VMs in my vCenter that I want the VMware FQDN discovery rule to "take over" when it discovers them and update/add on to the existing entry (since some of those hosts may have other templates linked , I want to keep those linked and also have the VMware discovery apply its own). But instead I get errors about hosts with those names already existing.

I'm wondering, do I really have to fully delete the host and let the discovery re-create it? Is there no way to make a discovery "take control" of an existing host when its criteria matches?

[Andres26]

Zabbix 7.0.9

I have a discovery rule, that scans an OLT (PON) via snmp (walk[OID]) and for every "child" device found (ONT/CPE) create a new host via "Host prototype" with an inherited snmp interface of the OLT.
Every new host has his own uniqe serialnumber (like a MAC-Adress) as hostname. That works fine.

I set the discovery rule, to not delete or disable generated hosts. I do not want to lose any historical data from the ONT / CPE (Host prototype).

Sometimes a device can move from on OLT to another OLT.

Now, the new OLT with the same discovery rule sees the devices in his ont table and would like to create a new host (prototype).
Cannot create host: host with the same name "xxxxhostnamexxx" already exists.
Thats true. But I like to force overwrite/update the existing ont/cpe/device withe the new interface datas instead of creating a new one.

I know, I could write a script, tha uses the API to do what I do now with the discovery rules, but first I like to ask, if somebody has an idea how to overwrite an existing host instead of creating a new one

Buen dia.
estoy tratando de configurar algo parecido de lo que ya lograste hacer, pero lo quiero tambien que me rellene con coordenas, me puedes apoyar con tu plantilla de como lograste que creara los host con el descubrimiento? por favor.