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- name: Store known hosts of 'all' the hosts in the inventory file
hosts: all:localhost
connection: local
tasks:
- delegate_to: "localhost"
set_fact: target_hosts="{{ play_hosts | difference(['localhost']) }}"
- 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: "{{ target_hosts }}"
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 of {{ item.item }} 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 }}"
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