RFC - Systemd first boot service for host provisioning

ekohl · August 15, 2022, 9:34am

I’ve reached out via email to the Anaconda developer I had contact with back in 2019 about this. I recall that it was RHEL 8.2 or 8.3 that introduced it. Within Foreman we do have the OS major and minor versions and we can do version checks. That’s how we also dealt with RHEL 5 vs 6 vs 7 etc.

What you describe sounds a lot like the Ansible Tower provisioning callback:

github.com

theforeman/foreman/blob/develop/app/views/unattended/provisioning_templates/snippet/ansible_provisioning_callback.erb

<%#
kind: snippet
name: ansible_provisioning_callback
model: ProvisioningTemplate
snippet: true
description: |
  Setups the one time run of the Ansible Tower / AWX callback script on a host.
  Supports only RPM based distributions. It is only used if the host param "ansible_tower_provisioning"
  is set to true. The actual callback script content is stored in the "ansible_tower_callback_script"
  snippet.

  See https://docs.theforeman.org/nightly/Configuring_Ansible/index-foreman-el.html#provisioning-a-callback-for-a-host_ansible for more details
-%>
<% if host_param_true?('ansible_tower_provisioning') -%>
<%
  rhel_compatible = @host.operatingsystem.family == 'Redhat' && @host.operatingsystem.name != 'Fedora'
  os_major = @host.operatingsystem.major.to_i
  has_systemd = (@host.operatingsystem.name == 'Fedora' && os_major >= 20) || (rhel_compatible && os_major >= 7) || (@host.operatingsystem.name == 'Ubuntu' && os_major >= 15) || (@host.operatingsystem.name == 'Debian' && os_major >= 8)
-%>
<% if has_systemd -%>

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To avoid going off topic I’ve opened a new post: