You can manually change the On-Premise Poller's IP address or hostname by following the steps below.
Stop the On-Premise Poller service.
Windows: Navigate to Start > Settings > Control Panel. Under Administrative Tools, click Services. You can also navigate to services.msc from Run. Stop the Site24x7 On-Premise Poller service as an administrator.
Linux: Execute the command sh StopServer.sh -force
Navigate to the <poller_installed_directory>/conf/ folder.
Below are the default directories for the On-Premise Poller installation:
Windows: C:\Program Files(x86)\Site24x7OnPremisePoller
Linux: /opt/Site24x7OnPremisePoller
Edit the serveragent.config file.
To change the IP address, add the following key:
LOCAL_IPADDRESS=<user_defined_ipaddress>
To change the hostname, add this key:
LOCAL_HOSTNAME=<user_defined_hostname that will be set to poller>
Restart the On-Premise Poller.
Windows: Go to services.msc and start the service SITE24X7_ONPREMISEMONITOR
Linux: Execute the command sh StartServer.sh &