zabbix-server on kubernetes agent failed to accept connection from exposed service IP

[simha.chow]

HI

i setup zabbix server in kubrernetes..and my agent also running as pod in the worker nodes


zabbix-server service is exposed with clusterIP ..
zabbix-agent has the config with servername=zabbix-server...but the agent is dropping the connection with error " failed to accept an incoming connection: connection from "IP" rejected, allowed hosts: "zabbix-server". "
that makes sense. bcoz zabbix-server is resolving to the cluster IP..but the Zabbix server is polling the agent with POD IP


when i changed my agent's servername string to IP of POD. where zabbix is running everything is normal , but pod IP cant be hardcoded as it will change when pod restarts
am stuck with this
any help

[Zdenek_OMNISENSUIT]

Hello

Your zabbix agent config should have this value specified: Server=<clusterIP or DNS>
If you are using only passive checks, you don't need the Hostname defined in config.
If you want use active checks, you must config agent with Hostname<some unique name which must be used on zabbix server too) and ServerActive=<clusterIP or DNS>.

https://www.zabbix.com/documentation/5.0/manual/concepts/agent