Concepts.md

Ansible

• created by redhat
• python
• uses jinja2 engine
• task oriented: function with params
• grup of tasks:
  • roles
  • playbook
• inventory
  • hosts
• connect via ssh
  • ssh key
• uses YAML to declare tasks/roles/playbooks
• machine running ansible = controller

Yaml concepts

• indented from left with spaces

• has objects (dictionaries)

• has lists (arrays)

• Example:

  - hosts: controller
  become: yes
  
  pre_tasks:
  - include_tasks: roles/kubernetes/tasks/hooks.yml
      loop: "{{ controller_execution_hooks }}"
      loop_control:
      loop_var: execution_hook
      when:
      - controller_execution_hooks | default([]) | length

• Get a value: [0].pre_tasks.[0].loop_control.loop_var -> execution_hook