ansible/config-ssh-key.yml

---
# config-ssh-key.yml - creates a ssh key on config node, has head node trust it

# Copyright 2017-present Open Networking Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

- hosts: config
  vars:
    - ssh_keysize: 4096
    - ssh_keytype: rsa

  tasks:
    - name: Create config ssh key
      user:
        name: "{{ ansible_user_id }}"
        generate_ssh_key: yes
        ssh_key_comment: cord-config-key
        ssh_key_type: "{{ ssh_keytype }}"
        ssh_key_bits: "{{ ssh_keysize }}"

    - name: Retrieve ssh pubkey using slurp
      slurp:
        src: "{{ ansible_env.HOME }}/.ssh/id_{{ ssh_keytype }}.pub"
      register: config_pubkey

- hosts: head
  gather_facts: false
  tasks:
    - name: Wait for head node to be available
      wait_for_connection:

- hosts: head
  tasks:
    - name: Add config ssh key to head node
      authorized_key:
        user: "{{ ansible_user_id }}"
        key: "{{ hostvars[groups['config'][0]].config_pubkey.content | b64decode }}"