variable misunderstanding

[gregory....@gmail.com]

i have this:

      backups:
        - mongodb
        - postgresql:
            - sonarqube
            - other
        - /opt
        - /etc

later i use it in template task:
- name: template backup script out
  template:
    src: backup-script.sh.j2
    dest: /root/backup.sh
    mode: 755


my jinja2 is:
{% if backups.postgresql is defined %}
  {% for db in backups.postgresql %}
     {{ db }}
   {% endfor %}
{% endif %}

expected output:
sonarqube
other

but got an empty output.

what's wrong in my template?

thank you!

[Brian Coca]

backups.postgresql does not exist, it is backups[1]

To get what you want the data would have to look like this:
backups:
mongodb

postgresql:
- sonarqube
- other

"/opt"
"/etc"



--
----------
Brian Coca (he/him/yo)

[Todd Lewis]

Needs more colons:

       backups:
         mongodb:
         postgresql:
             - sonarqube
             - other
         "/opt":
         "/etc":

On 2/6/24 9:57 AM, Brian Coca wrote:

backups.postgresql does not exist, it is backups[1]

To get what you want the data would have to look like this:
       backups:
         mongodb
         postgresql:
             - sonarqube
             - other
         "/opt"
         "/etc"

-- 
Todd

[Rowe, Walter P. (Fed)]

It is important to understand the structure of the data. Your backups variable defines a list, not a dictionary.

% cat foo.yml

---

- name: list to dict

  hosts: localhost

  become: false

  gather_facts: false

  vars:

    backups:

      - mongodb

      - postgresql:

        - sonarqube

        - other

      - /opt

      - /etc

  tasks:

    - debug: var=backups

% ansible-playbook -i localhost, foo.yml

PLAY [list to dict] ****************************************************************************************************

TASK [debug] ***********************************************************************************************************

ok: [localhost] => {

    "backups": [

        "mongodb",

        {

            "postgresql": [

                "sonarqube",

                "other"

            ]

        },

        "/opt",

        "/etc"

    ]

}

PLAY RECAP *************************************************************************************************************

localhost                  : ok=1    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   

backup[0] is a string "mongo"

backup[1] is a dictionary with one key 'postgresql'

backup[2] & [3] are strings "/opt" and "/etc"

backups[1].postgresql is a list of strings

backups[1].postgresql[0] is string "sonarqube"

backups[1].postgresql[1] is string "other"

Walter
--
Walter Rowe, Division Chief
Infrastructure Services Division
Mobile: 202.355.4123

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[Rowe, Walter P. (Fed)]

Furthering Todd's message about needing more colons:

% cat foo.yml

---

- name: list to dict

  hosts: localhost

  become: false

  gather_facts: false

  vars:

    backups:

      mongodb:

      postgresql:

        - sonarqube

        - other

      /opt:

      /etc:

  tasks:

    - debug: var=backups

    - debug: var=backups.postgresql

% ansible-playbook -i localhost, foo.yml

PLAY [list to dict] ****************************************************************************************************

TASK [debug] ***********************************************************************************************************

ok: [localhost] => {

    "backups": {

        "/etc": null,

        "/opt": null,

        "mongodb": null,

        "postgresql": [

            "sonarqube",

            "other"

        ]

    }

}

TASK [debug] ***********************************************************************************************************

ok: [localhost] => {

    "backups.postgresql": [

        "sonarqube",

        "other"

    ]

}

PLAY RECAP *************************************************************************************************************

localhost                  : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   

Walter
--
Walter Rowe, Division Chief
Infrastructure Services Division
Mobile: 202.355.4123

To view this discussion on the web visit https://groups.google.com/d/msgid/ansible-project/7910AFC7-18E1-4952-B8B9-F764461E0405%40nist.gov.