Salt minion bootstrap with Ansible

gistfile1.txt

#!/bin/bash
# Add the SSH fingerprints to the known hosts file
while read minion; do ssh-keyscan -H $minion >> ~/.ssh/known_hosts; done < inventory

# Run the ansible playbook
ansible-playbook --inventory inventory --ask-pass --ask-become-pass playbook.yml

inventory

[minions]
server1.example.com
server2.example.com
server3.example.com
server4.example.com

playbook.yml

---
- hosts: minions
  remote_user: user_with_sudo
  tasks:
  - name: start salt minion
    service: name=salt-minion state=started enabled=yes
    become: yes