Pre-create and Post-delete tasks are actions that can be performed before creating or after deleting a blueprint deployment. They can be used to integrate with external systems, set variables, or add delays. The valid tasks are Execute, Set variable, HTTP, and Delay. Create, Start, Stop, and Delete are not valid tasks, as they are part of the deployment lifecycle, not the pre-create or post-delete actions. Reference: Nutanix Certified Professional - Multicloud Automation (NCP-MCA) Exam Blueprint Guide, page 10; Nutanix Multicloud Automation Administration (NMCAA) Course, Module 5: Blueprints.

The easiest way to satisfy the request is to add an Email action to the end of the existing playbook and use the {{action[index] .stdout}} parameter in the Message field. This way, the administrator does not need to modify the script or create a file to store the output. The {{action[index] .stdout}} parameter will capture the standard output of the previous action, which is the VM SSH action that executes the script. The Email action will then send the output as the message body to the specified recipients. Reference: You can find more information about this topic in the following sources:
Nutanix Certified Professional - Multicloud Automation (NCP-MCA) Exam Blueprint Guide, Section 3 - Validate Blueprints, Runbooks, Playbooks, and Automation Settings, page 10 Nutanix Multicloud Automation Administration (NMCAA), Module 4 - X-Play, Lesson 2 - Playbooks, page 4-11

When integrating with an IP Address Management (IPAM) solution within Nutanix Calm, an administrator would use a 'Pre-create' task to request a static IP address. This task is performed before the actual creation of the VM, ensuring that the IP address is allocated and can be assigned during the VM's creation process. Profiles (A) are used to define deployment environments, Guest Customization (C) is used for configuring the OS settings, and Create (D) is typically the task for provisioning the actual VM, not for requesting an IP.

https://portal.nutanix.com/page/documents/details?targetId=Nutanix-Calm-Admin-Operations-Guide-v3_6_2:nuc-macros-variables-overview-c.html

To make a custom variable type available for all deployments, the developer should publish the variable type to the Marketplace. By publishing it to the Marketplace, the variable type becomes accessible to all administrators and users across different projects, ensuring consistency and reusability.
Reference:
Nutanix Calm documentation on Publishing to Marketplace.
Nutanix Best Practices for Variable Management.