Getting "Couldn't resolve host name: Could not resolve host: example.zabbixagent.com; Name or service not known" in Zabbix server although DNS and hostname of Zabbix Active Agent is correct. Is this a bug or a misconfiguration in Zabbix? Please help.
“Couldn’t resolve host name: Could not resolve host:” in Zabbix
network-monitoringzabbixzabbix-agent
Related Solutions
If the agent is deployed active, and the FW allows each agent to connect back to the server on the correct port, you shouldn't have a problem getting alerts.
But if you have several agents behind a FW you should deploy a Zabbix Proxy, as Jacob mentioned.
As you can see from the template, discovery runs only once an hour. So you need to wait a bit after you add a new host before this data becomes available.
Best Answer
If this resolves from the commandline by copy-pasting the name (not retyping), it is likely that you have changed
resolv.conf. In earlier versions of Zabbix you have to restart the daemons after changing that file. As you have not specified the Zabbix version, assuming your version still needs that restart.If that does not help, copy the host DNS from the host properties and do
ping,digor similar from the server box and make sure to adjust the host setting to the correct name.