Ideas virt_net

Everything started with issues with the virt_net modules:

• ansible-collections/community.libvirt#38
• ansible-collections/community.libvirt#46
• ansible-collections/community.libvirt#47

This page collects ideas for dicussion to find the right way of a fix / improvement.

General paradigm

From Ansible use case configuration management:

Ansible features an state-driven resource model that describes the desired state of computer systems and services, not the paths to get them to this state. No matter what state a system is in, Ansible understands how to transform it to the desired state (and also supports a "dry run" mode to preview needed changes). This allows reliable and repeatable IT infrastructure configuration, avoiding the potential failures from scripting and script-based solutions that describe explicit and often irreversible actions rather than the end goal."

Good example from https://hvops.com/articles/ansible-vs-shell-scripts/:

---
- hosts: all
  tasks:

  - name: Ensure the PGP key is installed
    apt_key: >
      state=present
      id=AC40B2F7
      url="http://keyserver.ubuntu.com/pks/lookup?op=get&fingerprint=on&search=0x561F9B9CAC40B2F7"

  - name: Ensure https support for apt is installed
    apt: >
      state=present
      pkg=apt-transport-https

  - name: Ensure the passenger apt repository is added
    apt_repository: >
      state=present
      repo='deb https://oss-binaries.phusionpassenger.com/apt/passenger raring main'

  - name: Ensure nginx is installed
    apt: >
      state=present
      pkg=nginx-full

  - name: Ensure passenger is installed
    apt: >
      state=present
      pkg=passenger
      update_cache=yes

  - name: Ensure the nginx configuration file is set
    copy: >
      src=/app/config/nginx.conf
      dest=/etc/nginx/nginx.conf

  - name: Ensure nginx is running
    service: >
      name=nginx
      state=started

Some critical / skeptical words: https://regebro.wordpress.com/2014/09/17/a-script-is-not-configuration/