ansible/update-hosts.yml

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---

- hosts: localhost
  gather_facts: false

  tasks:
    - name: Read .env file
      slurp:
        src: ../.env
      register: env_file

    - name: extract env vars from env_file and remove comments
      set_fact:
        env_vars: "{{ (env_file['content'] | b64decode).split('\n') | select('match', '[^#]') }}"
      changed_when: false

    # - name: extract env vars from env_file and remove comments
    #   set_fact:
    #     env_vars: "{{ env_file['content'] | b64decode | split('\n') | select('match', '[^#]') }}"
    #   changed_when: false

    # - name: dict of env vars
    #   set_fact:
    #     env_vars_dict: "{{ env_vars |  map('split', '=') | map('list')  }}"
    #   changed_when: false

    # - name: print env vars
    #   debug:
    #     msg: '{{ item }}'
    #   loop: "{{ env_vars_dict.items() | list }}"

    # - name: extract hostnames and IP from env var dict
    #   set_fact:
    #     env_hostnames: "{{ env_vars_dict.keys() }}"
    #     #env_ip: "{{ env_vars_dict | selectattr('0', 'match', '.*_ADDRESS.') | map(attribute='1') | list }}"
    #   changed_when: false

    # - name: print env_hostnames
    #   debug:
    #     var: env_hostnames

    # - name: extract hostnames
    #   set_fact:
    #     env_test: "{{ env_vars | select('match', '.*_HOST_NAME.', '.*_ADDRESS.' ) }}"

    # - name: print env_test
    #   debug:
    #     var: env_test

    - name: extract hostnames and IP from env vars
      set_fact:
        env_hostnames: "{{ env_vars | select('match', '.*_HOST_NAME.') | map('regex_replace', '.*_HOST_NAME=(.*)', '\\1') }}"
        env_ip: "{{ env_vars | select('match', '.*_ADDRESS.') | map('regex_replace', '.*_ADDRESS=(.*)', '\\1') }}"
      changed_when: false

    # - name: Combine hostnames and IPs
    #   set_fact:
    #     hosts: "{{ env_hostnames | zip(env_ip) | map('extract', ['0', '1']) | map('regex_replace', '(.*) (.*)', '\\1 \\2') | list}}"
    #   changed_when: false

    # - name: Combine hostnames and IPs
    #   set_fact:
    #     hosts: "{{ env_hostnames | zip(env_ip) | map('regex_replace', '(.*) (.*)', {'ip_address': '\\1', 'hostname': '\\2'}) | list | ansible.utils.consolidate }}"
    #   changed_when: false

    - name: combine hostnames and IPs
      set_fact:
        hosts: "{{ env_hostnames | zip(env_ip)  }}"
      changed_when: false

    - name: Update hosts file for joyride
      ansible.builtin.template:
        src: templates/hosts.j2
        dest: ../hosts
        # state: present
        # create: true