multi-hosts.ini

[master]
master1 ansible_host=192.168.1.203
master2 ansible_host=192.168.1.249
master3 ansible_host=192.168.1.198
[workers]
worker1 ansible_host=192.168.1.153
worker2 ansible_host=192.168.1.239
[haproxy]
server ansible_host=192.168.1.212
[all:vars]
ansible_python_interpreter=/usr/bin/python3
ansible_ssh_extra_args='-o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null'
ansible_ssh_private_key_file=/path/to/your/key.pem
ansible_user=ubuntu