AZ-104 Certification Notes

Chapter 9.3 - Cloud Init

Cloud-Init

Cloud-init is the industry standard multi-distribution method for cross-platform cloud instance initialization. It's supported across all major public cloud providers, provisioning systems for private cloud infrastructure, and bare-metal installations.

What is Cloud Instance Initialization?

• The process of preparing an instance with configuration data for the operation system and runtime environment

Cloud instances are initialized from a disk image and instance data:

• Meta-data
• User-data
• Vendor-data

User Data is a script that you want to run when an instance first boots up. eg: Install Apache web-server.

Azure Virtual Machines supports for cloud-init across most Linux Distros that support it.

Practice Quiz

• What sources of data are cloud instances initialized from a disk image and instance data? (Choose 3)

  • User-data
  • Image-data
  • Vendor-data
  • Meta-data

• What is Cloud Instance Initialization?

  • The process of preparing an instance with configuration data for the operating system and runtime environment

• What is a script that you want to run when an instance first boots up? e.g. Install Apache web-server

  • User Data