Which password database system work with ansible? Which password database system work with ansible to manage password of network devices and servers?
Any system would do. You might need to write a wrapper. For example:

&gt; cat get-passwd-01.yml
- hosts: localhost
  gather_facts: no
  tasks:
    - command: ~/bin/get-passwd user9
      register: password
    - debug:
        msg: "passwd:{{ password.stdout }}"


.

&gt; ansible-playbook get-passwd-01.yml | grep msg
    "msg": "passwd: T4gpJtZ69R5cZD9zQh"