createSSHkey.yaml

---
- name: Playbook to create SSH key pair
  hosts: localhost
  gather_facts: false
  
  vars_prompt:
    - name: "sshKeyFolder"
      prompt: "Define the SSH key pair storage folder:"
      default: "~/.ssh"
      private: no

    - name: "hostName"
      prompt: "Define the Host Name:"
      default: "example.local"
      private: no

    - name: "hostIP"
      prompt: "Define the Host IP:"
      default: "0.0.0.0"
      private: no
      
    - name: "sshKeyPassword"
      prompt: "Define the password for SSH Private Key:"
      unsafe: true
      default: ""
      private: yes  # Set private to yes to hide input  (default is no)
      
  vars:
    sshCipher: "ed25519"

  tasks:
    - name: Check if SSH key already exists
      stat:
        path: "{{ sshKeyFolder }}/{{ hostIP }}.{{ hostName }}.key"
      register: ssh_key_stat

    - name: Fail if SSH key already exists
      fail:
        msg: "SSH key {{ sshKeyFolder }}/{{ hostIP }}.{{ hostName }}.key already exists!"
      when: ssh_key_stat.stat.exists
  
    - name: Generate SSH key pair
      community.crypto.openssh_keypair:
        path: "{{ sshKeyFolder }}/{{ hostIP }}.{{ hostName }}.key"
        type: "{{ sshCipher }}"
        passphrase: "{{ sshKeyPassword }}"
        comment: "{{ hostIP }}.{{ hostName }}"
      register: ssh_key

    - name: Display generated SSH key information
      debug:
        msg: "Generated SSH key with fingerprint: {{ ssh_key.fingerprint }}"
      when: ssh_key is defined