How to run an Ansible playbook locally

ansible_local_playbooks.md

• using Ansible command line:

ansible-playbook --connection=local 127.0.0.1 playbook.yml

• using inventory:

127.0.0.1 ansible_connection=local

• using Ansible configuration file:

[defaults]
transport = local

• using playbook header:

- hosts: 127.0.0.1
  connection: local

The first option only works as ansible-playbook --connection=local --inventory 127.0.0.1, playbook.yml
Comma is essential, otherwise it's treated like file name.

Thanks! Bookmarked :-)

which is recommended or best practice?

I don't know anything about official best practices, but by myself most often use the last variant (i.e., playbook header).

But if I have'nt understood this badly (https://docs.ansible.com/ansible/latest/inventory/implicit_localhost.html), it isn't necessary to indicate explicitely the connection type: just writing "localhost" as target will make Ansible to infer it has to make a "local" connection, isn't?

I'm not sure it worked this way in all versions of Ansible I'd previously coded for, so I used to always add connection: local just to make sure that the connection will not go through SSL.

ansible-playbook -c local -i localhost, ini.yaml