Agents do not show up as available

[buddyspencer]

Hi,

We are trying to switch our monitoring at work, and I tried to play around at home first to just get ahead of this topic.
I installed zabbix on an old and weak machine and connected the agent2 to this server, it took a few minutes and they showed up as available on zabbix.
I installed zabbix then on my raspberry pi 4 (raspberry pi os) and changed the configuration for the two nodes to send data to the pi. I don't see anything bad in the logs. Telnet to the pi from both nodes on port 10051 works fine. But those nodes don't show up as available in zabbix. Can anyone help me out?

[buddyspencer]

From what I see there are not items on those nodes.

[buddyspencer]

That was my mistake it seems. I added the template "Linux by Zabbix Agent" and now they are available. Thanks for your help

[cyber]

Any passive items on those nodes? if only active items, then it will not show up as "available"....

[cyber]

Well, if no passive items, then no "availability". If server/proxy does not check that host, how can it turn that agent availability icon green? Add at least one passive item and ZBX icon should turn green, if everything is OK.