install_keys.yml

---
- hosts: all
  gather_facts: no
  tasks:
  - name: Check whether key pair is present or not.
    stat:
      path: ./ssh_keys/kubeadm_test
    register: key_pair_exists
    delegate_to: 127.0.0.1
  - name: Delete any previous k8s-hosts in the known_hosts file
    lineinfile:
      path: ~/.ssh/known_hosts
      regexp: k8s-*
      state: absent
    delegate_to: 127.0.0.1
    run_once: true
  - name: Delete any previous kubeadm_test keys
    file:
      path: "./ssh_keys/{{ item }}"
      state: absent
    with_items:
      - kubeadm_test
      - kubeadm_test.pub
    delegate_to: 127.0.0.1
    run_once: true
    when: not key_pair_exists.stat.exists
  - name: Generate a new Random ssh key pair
    command: ssh-keygen -f ./ssh_keys -t ed25519 -N '' -f ./ssh_keys/kubeadm_test
    run_once: true
    delegate_to: 127.0.0.1
    register: keypair_generation_output
    when: not key_pair_exists.stat.exists
  - debug: var=keypair_generation_output
    when: not key_pair_exists.stat.exists
  - name: identify public key content on control machine
    command: cat ./ssh_keys/kubeadm_test.pub
    register: pub_key
    run_once: true
    delegate_to: 127.0.0.1
  - debug: var=pub_key
  - name: Transfer public key to guest machine
    command: vagrant scp ssh_keys/kubeadm_test.pub .
    run_once: true
    delegate_to: 127.0.0.1
  - name: Remove previous redundant ed_25119 keys
    shell: vagrant ssh {{ inventory_hostname }} -c 'sed -i "/ssh-ed25519/d" ~/.ssh/authorized_keys'
    delegate_to: 127.0.0.1
  - name: put public key into the authorized_keys of the remote machines
    shell: vagrant ssh {{ inventory_hostname }} -c 'cat kubeadm_test.pub >> ~/.ssh/authorized_keys'
    delegate_to: 127.0.0.1
  - name: Delete public keys
    shell: vagrant ssh {{ inventory_hostname }} -c 'rm kubeadm_test.pub'
    delegate_to: 127.0.0.1
  - name: add ssh key to ssh agent
    command: ssh-add ./ssh_keys/kubeadm_test
    delegate_to: 127.0.0.1
    run_once: true