If you have a server with multiple IP addresses serving different applications, you will find that Uptime Infrastructure Monitor only allows you to create service monitors against the primary IP address (by default).
To monitor services on alternate IP addresses, each IP must be added to Uptime Infrastructure Monitor as a Virtual Node. This step allows you to generate service monitors against the virtual node element just like a regular agent element.
This approach may have licensing implications. Please refer to your license entitlement or contact your Account Executive for more information.