Additional resources

For further information about using cloud-init with Metadata service, see the following guides:

Use Akamai's Metadata Service with Cloud-Init on Any Distribution
Use Cloud-Init to Manage Users on New Servers
Use Cloud-Init to Automatically Configure and Secure Your Servers
Use Cloud-Init to Install and Update Software on New Servers
Use Cloud-Init to Run Commands and Bash Scripts on First Boot
Use Cloud-Init to Write to a File