Ansible known_hosts fix. SSH, git clone, etc

known_hosts_fix.yml

# https://stackoverflow.com/a/39083724/734493

# original version
- name: Store known hosts of 'all' the hosts in the inventory file
  hosts: localhost
  connection: local

  vars:
    ssh_known_hosts_command: "ssh-keyscan -T 10"
    ssh_known_hosts_file: "{{ lookup('env','HOME') + '/.ssh/known_hosts' }}"
    ssh_known_hosts: "{{ groups['all'] }}"

  tasks:

  - name: For each host, scan for its ssh public key
    shell: "ssh-keyscan {{ item }},`dig +short {{ item }}`"
    with_items: "{{ ssh_known_hosts }}"
    register: ssh_known_host_results
    ignore_errors: yes

  - name: Add/update the public key in the '{{ ssh_known_hosts_file }}'
    known_hosts:
      name: "{{ item.item }}"
      key: "{{ item.stdout }}"
      path: "{{ ssh_known_hosts_file }}"
    with_items: "{{ ssh_known_host_results.results }}"

my_version_fix.yml

    - name: For each host, scan for its ssh public key
      shell: "ssh-keyscan {{ item }},`dig +short {{ item }}`"
      with_items: "{{ known_hosts }}"
      register: ssh_known_host_results
      become_user: '{{ user }}'
      ignore_errors: yes

    - name: Add/update the public key in the known_hosts
      known_hosts:
        name: "{{ item.item }}"
        key: "{{ item.stdout }}"
      become_user: '{{ user }}'
      with_items: "{{ ssh_known_host_results.results }}"