Merging dictionaries in ansible

Merging dictionaries in ansible

In Ansible, you can merge dictionaries using the combine filter or the | operator. Both methods allow you to combine two or more dictionaries into a single dictionary. Here's how you can do it:

  1. Using combine Filter: The combine filter merges dictionaries and overwrites values from the right dictionary if there are duplicate keys. Here's an example:

    --- - hosts: localhost vars: dict1: key1: value1 key2: value2 dict2: key2: updated_value key3: value3 tasks: - name: Merge dictionaries debug: var: merged_dict vars: merged_dict: "{{ dict1 | combine(dict2) }}"

    In this example, the resulting merged_dict will contain all keys from dict1 and dict2, with values from dict2 taking precedence if keys are present in both dictionaries.

  2. Using | Operator: The | operator can also be used to merge dictionaries. It's less verbose but behaves similarly to the combine filter:

    --- - hosts: localhost vars: dict1: key1: value1 key2: value2 dict2: key2: updated_value key3: value3 tasks: - name: Merge dictionaries debug: var: merged_dict vars: merged_dict: "{{ dict1 | dict2 }}"

    This example demonstrates merging dictionaries using the | operator, which effectively performs the same operation as the combine filter.

Both methods will result in a merged dictionary containing the combined key-value pairs from the input dictionaries. Keep in mind that if you're working with nested dictionaries, the behavior might differ, and you might need to use recursive merging techniques.

Examples

  1. "Ansible merge dictionaries in playbook"

    • Description: This query looks for ways to merge dictionaries within an Ansible playbook.
    - name: Merge dictionaries in Ansible hosts: localhost tasks: - name: Merge dictionaries set_fact: merged_dict: "{{ dict1 | combine(dict2) }}"

  2. "Ansible merge dictionary variables"

    • Description: This query seeks methods to merge dictionary variables in Ansible.
    - name: Merge dictionary variables hosts: localhost vars: dict1: key1: value1 dict2: key2: value2 tasks: - name: Merge dictionaries set_fact: merged_dict: "{{ dict1 | combine(dict2) }}"

  3. "Ansible combine dictionaries in playbook"

    • Description: This query aims to combine dictionaries within an Ansible playbook.
    - name: Combine dictionaries in Ansible hosts: localhost tasks: - name: Combine dictionaries set_fact: combined_dict: "{{ dict1 | combine(dict2) }}"

  4. "Ansible merge multiple dictionaries"

    • Description: This query looks for methods to merge multiple dictionaries in Ansible.
    - name: Merge multiple dictionaries in Ansible hosts: localhost vars: dict1: key1: value1 dict2: key2: value2 dict3: key3: value3 tasks: - name: Merge dictionaries set_fact: merged_dict: "{{ dict1 | combine(dict2) | combine(dict3) }}"

  5. "Ansible combine dictionary variables"

    • Description: This query seeks ways to combine dictionary variables in Ansible.
    - name: Combine dictionary variables hosts: localhost vars: dict1: key1: value1 dict2: key2: value2 tasks: - name: Combine dictionaries set_fact: combined_dict: "{{ dict1 | combine(dict2) }}"

  6. "Ansible merge dictionaries with defaults"

    • Description: This query aims to merge dictionaries in Ansible while considering default values.
    - name: Merge dictionaries with defaults hosts: localhost vars: dict1: key1: value1 dict2: key2: value2 tasks: - name: Merge dictionaries set_fact: merged_dict: "{{ dict1 | combine(dict2, recursive=True) }}"

  7. "Ansible merge dictionaries from files"

    • Description: This query looks for ways to merge dictionaries loaded from files in Ansible.
    - name: Merge dictionaries from files hosts: localhost tasks: - name: Load dictionaries from files include_vars: file: "{{ item }}" with_items: - dict1.yml - dict2.yml - name: Merge dictionaries set_fact: merged_dict: "{{ dict1 | combine(dict2) }}"

  8. "Ansible merge dictionaries with nested keys"

    • Description: This query aims to merge dictionaries in Ansible with nested keys.
    - name: Merge dictionaries with nested keys hosts: localhost vars: dict1: key1: subkey1: value1 dict2: key1: subkey2: value2 tasks: - name: Merge dictionaries set_fact: merged_dict: "{{ dict1 | combine(dict2, recursive=True) }}"

  9. "Ansible merge dictionaries with conditional"

    • Description: This query seeks methods to merge dictionaries in Ansible conditionally.
    - name: Merge dictionaries with conditional hosts: localhost vars: dict1: key1: value1 dict2: key2: value2 tasks: - name: Merge dictionaries set_fact: merged_dict: "{{ dict1 if condition else dict2 }}"

  10. "Ansible merge dictionaries from variables"

    • Description: This query looks for ways to merge dictionaries in Ansible from variables.
    - name: Merge dictionaries from variables hosts: localhost vars: dict1: key1: value1 dict2: key2: value2 tasks: - name: Merge dictionaries set_fact: merged_dict: "{{ dict1 | combine(dict2) }}"

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