How to nested loop with list

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I am looking for a solution to handle something like this:

roles:

  • role1
  • role2

configuration:
role:
role1:

  • domain: “*”
    limit_type: hard
    limit_item: nproc
    value: 40960

  • domain: “*”
    limit_type: soft
    limit_item: nproc
    value: 40960

  • name: setup role-specific limits
    pam_limits:
    dest: /etc/security/limits.d/user.conf
    domain: “{{ pam_limits[‘role’][item][‘domain’] }}”
    limit_type: “{{ pam_limits[‘role’][item][‘limit_type’] }}”
    limit_item: “{{ pam_limits[‘role’][item][‘limit_item’] }}”
    value: “{{ pam_limits[‘role’][item][‘value’] }}”
    when: (‘role’ in pam_limits) and (item in pam_limits[‘role’])
    with_items: “{{ roles }}”

I see an error: The task includes an option with an undefined variable. The error was: ‘list object’ has no attribute ‘domain’. Looks like pam_limits[‘role’][item] is the list and needs to be flattened.

Thank you.