How to automatically install Ansible Galaxy roles?

Question

All my Ansible playbooks/roles are checked in to my git repo.

However, for Ansible Galaxy roles I always have to explicitly download them one by one on every machine

Answer 1

At this point in time, as far as I know there's no automatic way to download roles at runtime. Your best bet is to either commit them into your own repo or have a proper documentation listing all the requirements. You could even create a pre-flight playbook that installs your roles. :)