1

When writing a custom role for an Ansible playbook, it's possible to specify defaults. I would like to do the same when using a role from Ansible Galaxy (the Ansible “package manager”).

For example, when using the popular redis role, I'd like to be able to specify a default redis_version, so that anyone importing that role will get the same.

Without centralizing this, I would put the redis version into the variable section in every playbook when using the role. That's not ideal. Other ways I can think of:

  • Create a new role, put the default variable there, and then make the Galaxy-role a dependency. (Not sure if variables are passed down.)
  • Put the default into ansible.cfg[defaults].

What's the best-practice?

0

Figure out where to define a variable, and don’t make it complicated. Variable Precedence: Where Should I Put A Variable?

For example, group_vars alongside the playbook. Or from dynamic inventory. Lots more places to put variables too.

If you want the user to only need to import a role, with no variables in their play or inventory, consider forking the role and changing the default. You now have to maintain that, which is a disadvantage. I would rather have my variables in a play, it is just a few lines.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.