how to read a yaml file and update itself ?

[Eric Chang]

let's said I have a yaml file like

centers.yml

centers:

  - center_id: ABC123

    center_password: 123456789

  - center_id: 123ABC

    center_password: ""

now I want to read the centers.yml , and update center_password with pwgen(8) if center_password is null and write back to centers.yml

How should I do the job ?

[Dick Visser]

Is this file local or on your remote host?

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[Eric Chang]

>> Is this file local or on your remote host?

local

dick....@geant.org 在 2021年11月5日 星期五下午3:04:57 [UTC+8] 的信中寫道：

[Dick Visser]

This should work, although it could probably be optimised:

---

- hosts: localhost

  gather_facts: no

  connection: local

  vars:

    filename: /tmp/centers.yml

  tasks:

    - set_fact:

        centers_data: |

          {{ centers_data|default([]) | union([

            item if item.center_password != '' else

            {

              'center_id': item.center_id,

              'center_password': lookup('pipe', 'pwgen -sy 48 1')

            }

          ]) }}

      loop: "{{ lookup('file', filename)|from_yaml|json_query('centers[]') }}"

    - copy:

        content: "{{ {'centers': centers_data} | to_nice_yaml }}"

        dest: /tmp/out.yml

To view this discussion on the web visit https://groups.google.com/d/msgid/ansible-project/900f6d95-3961-4508-8fc1-21f2db05759an%40googlegroups.com.

--

Dick Visser
Trust & Identity Service Operations Manager
GÉANT

[Eric Chang]

WOW , that's incredible !  thanks !

dick....@geant.org 在 2021年11月8日 星期一下午6:04:56 [UTC+8] 的信中寫道：