The error message "INTERNAL_ERROR: ErrorCode: 9" typically indicates an issue with the SSH service on the VMs.
In this context, where a playbook is being executed to shut down Linux VMs, it's essential that the SSH service is running to allow for remote management and execution of commands.
If the SSH service isn't running, the playbook won't be able to execute commands on the VMs, leading to an internal error.
References:
* Nutanix Multicloud Automation Administration (NMCAA) Course, Module 3: X-Play, Lesson 3.3:
Creating and Managing Playbooks, Slide 19: Action Settings
* Nutanix Certified Professional - Multicloud Automation (NCP-MCA) Exam Blueprint Guide, Section 3:
Validate Blueprints, Playbooks, and Automation Settings, Objective 3.3: Determine the correct method to validate required Playbook configurations