Dynamic GPU(pass , vgpu) Selection in Calm Runbook Input Forms

Question

Hello Nutanix Community,I am developing a self-service runbook (python scripts) in Prism Central to implement a time-based GPU billing model, allowing administrators to attach a GPU to a VM for a specific duration.The Core QuestionIs there a supported or known method (API-driven or otherwise) to dynamically populate a Runbook Input Variable (specifically a List of Values/Dropdown) at runtime, based on a query to the Prism API?For example:	Could a pre-run script execute a gpus/list query to determine available vGPU profiles and format that output to populate the options list for the gpu_profile_selection variable before the form is presented to the user?

Avico · Answer

Hello ​@MedAmineYes you can query any DB/API and populate the results into a drop-down control in your runbook.The way to do it is to create an Input variable with eScript or PowerShellas atype. See the image below.On the code (black) section, you write your query and print out the result as a series of strings separated by commas. For example (eScript):print("{0},{1},{2},{3},{4}".format("RHEL 8.8","RHEL 9.2","RHEL 9.5","Ubuntu 22.04","Ubuntu 24.04"))The result will be a drop-down list of your query results.🚩eScript is a constrained version of Python. Most of the common Python modules are not usable.See Nutanix’ documentation for the way to program in eScript.🚩If you want more than one selection to be accepted, make sure you tick the “Multiple Input” checkbox.Good luck!

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