CODEWITHSUNDEEP
ansible
thomas
thomas

Reputation: 13

Ansible playbook using date.stdout filter with variable from stdout

I'm trying to run this task:

---
- name: "{{ BANNER }}"

  shell: "rpm -qf /etc/issue"
  register: rpm
  changed_when: False
  ignore_errors: True

- shell: 'rpm -q -i "{{ rpm.stdout }}" | grep "Install Date:" | awk ''{ print $4 " " $5 " " $6 }'''
  register: rpm
  changed_when: False
  ignore_errors: True

- shell: 'date -d "{{ rpm.stdout }}" +''%Y-%d-%m'''
  register: date
  changed_when: False
  ignore_errors: True

- debug: var=date.stdout

- debug: var={{ (( date.stdout | to_datetime('%Y-%m-%d')) - ("2020-12-25" | to_datetime('%Y-%m-%d'))).days  }}

Basically I need to pass the string contained in data.stdout to filter to_datetime for date subtraction but I receive this error:

TASK [RH7-008 : debug] **********************************************************************************************************************************************
ok: [192.168.56.1] => {
    "date.stdout": "2019-14-03"
}

TASK [RH7-008 : debug] **********************************************************************************************************************************************
fatal: [192.168.56.1]: FAILED! => {"msg": "the field 'args' has an invalid value ([u'check_mode']), and could not be converted to an dict.The error was: time data '2019-14-03' does not match format '%Y-%m-%d'\n\nThe error appears to have been in '/root/ansible/roles/RH7-008/tasks/check_mode.yml': line 27, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- debug: var={{ (( date.stdout | to_datetime('%Y-%m-%d')) - (\"2020-12-25\" | to_datetime('%Y-%m-%d'))).days  }}\n  ^ here\nWe could be wrong, but this one looks like it might be an issue with\nmissing quotes.  Always quote template expression brackets when they\nstart a value. For instance:\n\n    with_items:\n      - {{ foo }}\n\nShould be written as:\n\n    with_items:\n      - \"{{ foo }}\"\n\nexception type: <type 'exceptions.ValueError'>\nexception: time data '2019-14-03' does not match format '%Y-%m-%d'"}
        to retry, use: --limit @/root/ansible/main.retry

It seem's that the format input contained in date.stdout is wrong compared to the one that is specified in to_datetime('%Y-%m-%d'). What am I missing? Maybe there's some strange character in date.stdout ?

Thanks in advance! Tommaso.

Upvotes: 0

Views: 853

Answers (1)

larsks
larsks

Reputation: 311870

You are asking to_datetime to parse dates of the form %Y-%m-%d.

You are passing in data of the form 2019-14-03.

There are not 14 months in the year.

You want the format argument to to_datetime to match the format argument you're providing to the date command:

to_datetime('%Y-%d-%m')

Making it (reformatted slightly for clarity, and with the hardcoded date swapped to match your format):

- debug:
    var: >-
      (
      (date.stdout | to_datetime('%Y-%d-%m')) -
      ("2020-25-12" | to_datetime('%Y-%d-%m'))
      ).days

Alternatively, swap the argument to the date command instead if you really wanted %Y-%m-%d. Just make sure they match.

Upvotes: 1

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