Starting Zabbix Agent service, host [name] not found

[MoeyTheBear]

Hello everyone,

I am new to Zabbix and I am setting up my first host with the Zabbix Agent, but I'm running into issues getting the Agent to properly start.

My agent config file located in /etc/zabbix/zabbix_agentd.conf contains the following:

Server=[Zabbix SRV IP]
ServerActive=[Zabbix SRV IP]
Hostname=Zabbix Network Monitoring

I've verified in the Zabbix server console that the Hostname in the agent config file matches, the service does not start.

Upon checking the zabbix_agentd.log file, this line sticks out:

48710:20251204:165750.095 no active checks on server [192.168.100.7:10051]: host [Zabbix Network Monitoring] not found

I verified that the hostnames are matching, is there anything else I should check to ensure the Agent service starts properly.

Thanks for any assistance.

[Viktors Fomics]

Hello

The most common issue here would be hostname mismatch and even though you verified those, I'd really recommend to double-check (uppercase/lowercase should match, as well as the spaces). Additional thing to check: could it be that the host is disabled in GUI for some reason?

If all that is indeed checked, then it would be recommended to also test the connectivity over port 10051, might be an issue with connectivity or firewall.