Ansible Handler

Let’s look into simple hosts_file/actions/run.yaml example

- hosts: [{{host}}]
  sudo: yes
  tasks:
    {% for val in hosts %}
    - name: Create hosts entries for {{val['name']}} => {{val['ip']}}
      lineinfile:
        dest: /etc/hosts
        regexp: ".*{{val['name']}}$"
        line: "{{val['ip']}} {{val['name']}}"
        state: present
    {% endfor %}

It’s pretty much standard ansible playbook, but it is processed with jinja2 before ansible is executed.

Solar will create proper inventory

localhost ansible_connection=local user=vagrant location_id="d6255f99dda2fca55177ffad96f390a9" transports_id="2db90247d5d94732448ebc5fdcc9f80d" hosts="[{'ip': u'10.0.0.4', 'name': u'node1'}, {'ip': u'10.0.0.3', 'name': u'node0'}]"

Playbook will be also created

- hosts: [localhost]
  sudo: yes
  tasks:

    - name: Create hosts entries for node1 => 10.0.0.4
      lineinfile:
        dest: /etc/hosts
        regexp: ".*node1$"
        line: "10.0.0.4 node1"
        state: present

    - name: Create hosts entries for node0 => 10.0.0.3
      lineinfile:
        dest: /etc/hosts
        regexp: ".*node0$"
        line: "10.0.0.3 node0"
        state: present

You may wonder about hosts: [{{host}}], we have our own Transport so we execute ansible like this

ansible-playbook --module-path /tmp/library -i /tmp/tmpkV0U5F/tmpGmLGEwhosts_file2/inventory /tmp/tmpkV0U5F/tmpGmLGEwhosts_file2/runlNjnI3