Cloud-init

9.1.4. Cloud-init#

It is possible to install and configure cloud-init on the target system, to execute specitif actions at boot.

9.1.4.1. Simple script#

To simply pass a whole script to be executed by cloud-init at boot, use cloudinit_boot_script, which is a multilines variable:

For example:

cloudinit_boot_script: |
  echo "Hello world" >> /tmp/hello
  nmcli connection modify "Wired connection 1" ipv4.method manual ipv4.address 10.0.2.152/24 ipv4.gateway 10.0.2.1 ipv4.dns 10.0.2.1

The template will then simply execute a runcmd cloud-init instruction to execute this script.

9.1.4.2. Standard usage#

The role will install cloud-init package, write its configuration, and enable the cloud-init service, but will not start the service.

By default, configuration writen by the role will do nothing. You need to provide your own cloud-init configuration, by setting cloudinit_configuration variable, which must contain a full cloud-init configuration.

See the following documentation to help you build your needed configuration:

For example, to make the role write a configuration that will setup an admin user “kirby” at boot:

cloudinit_configuration:
  users:
    - name: kirby
      sudo: ALL=(ALL) NOPASSWD:ALL
      groups: users, admin
      lock_passwd: true
      ssh_authorized_keys:
        - ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAXXXXXXXX...
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