Playbook task for Find & replace nested key values

Question

ip_details.yaml

---
ip1:
  image:
    name: <ip input> # ip address 1 

ip2:
  config:
    range: 192.0.0.0
  image:
    name: <ip input> # ip address 2
  id:
    username:  # ip username
    password:  # ip Password

fetch_value.yml

ip1_image_name: 192.0.0.1
ip2_image_name: 192.0.0.2
ip_username: user@123
ip_password: pass@123

The task is to write one new update_ip.yml task for finding the ip_details.yaml file path and replacing/updating the ip input and id username and password.

I tried :

update_ip.yml

  - lineinfile:
        path: values.yml
        regexp: "{{ item.regexp }}"
        line: "{{ item.line }}"
        backrefs: true
      loop:
        - {regexp: '^(\s*)ip1.image.name: <user ip>(.*)$', line: '\1name: {{ ip1_image_name }}\2'}
        - {regexp: '^(\s*)ip2.image.name: <user ip>(.*)$', line: '\1name: {{ ip2_image_name }}\2'}
        - {regexp: '^(\s*)ip2.id.username:\s+.*?(\s+#.*)$', line: '\1username: {{ ip_username }}\2'}
        - {regexp: '^(\s*)ip2.id.password:\s+.*?(\s+#.*)$', line: '\1password: {{ ip_password }}\2'}

Final expectation : ip_details.yml

---
ip1:
  image:
    name: 192.0.0.1 # ip address 1 

ip2:
  config:
    range: 192.0.0.0
  image:
    name: 192.0.0.2 # ip address 2
  id:
    username: user@123 # ip username
    password: pass@123 # ip Password

Answer 1

i suggest you to use a template module:

1. create your template file ip_details.j2 in folder templates (same level than your playbook)

    ---
    ip1:
      image:
        name: {{ ip1_image_name }} # ip address 1 
   
    ip2:
      config:
        range: 192.0.0.0
      image:
        name: {{ ip2_image_name }} # ip address 2
      id:
        username:  {{ ip_username }} # ip username
        password:  {{ ip_password  }} # ip Password
   

2. create playbook:

        - name: testplaybook jinja2
          hosts: localhost
          gather_facts: no
          vars:
            ip1_image_name: 192.0.0.1
            ip2_image_name: 192.0.0.2
            ip_username: user@123
            ip_password: pass@123
   
          tasks:
            - name: template
              template:
                src: ip_details.j2
                dest: ip_details.yml
   

3. result in ip_details.yml:

    ---
    ip1:
      image:
        name: 192.0.0.1 # ip address 1 
   
    ip2:
      config:
        range: 192.0.0.0
      image:
        name: 192.0.0.2 # ip address 2
      id:
        username:  user@123 # ip username
        password:  pass@123 # ip Password