Cloud-init and Cloud-config

Cloud-init is a tool that automates the initial setup of a cloud instance, allowing you to configure network settings, set up users and permissions, install packages, and run scripts. Cloud-config is a format for writing configuration files that can be used with cloud-init.

Supported Operating Systems

Cloud-init is supported on all distributions provided by Tilaa, including:

Alma linux
Debian
Rocky Linux
Ubuntu
Arch Linux
CentOS

Example Cloud-config File

Here is an example of a cloud-config file that sets up a user, installs some packages, and runs a script:

yaml

            
#cloud-config
users:
  - name: myuser
    sudo: ALL=(ALL) NOPASSWD:ALL
    ssh_authorized_keys:
      - ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC6...
packages:
  - apache2
  - mysql-server
runcmd:
  - [ bash, -c, "echo 'Hello World!'" ]

Using Cloud-init

To use cloud-init, simply create a cloud-config file and pass it to the cloud-init tool when you launch your instance. You can also specify user data in the metadata service.

Example Use Cases

Here are some example use cases for cloud-init:

Automating the initial setup of a web server
Configuring network settings and firewall rules
Installing packages and running scripts

Cloud-init Documentation

For more information on cloud-init, including documentation and examples, please see the official cloud-init documentation.