https://next.c2platform.org/tags/roles/Recent content in Roles on C2 PlatformHugoenhttps://next.c2platform.org/docs/guidelines/coding/var-prefix/Mon, 01 Jan 0001 00:00:00 +0000https://next.c2platform.org/docs/guidelines/coding/var-prefix/<div class="alert alert-primary" role="alert"> Prefix public <a class="term-link" href="https://next.c2platform.org/docs/glossary/#role-variable" title="Glossary term: Click for definition">role variables</a> with the role name, for example <code>haproxy_frontends</code>. Prefix internal role variables with <code>__role_name_</code>, for example <code>__haproxy_frontends_rendered</code>. Prefix inventory-only <a class="term-link" href="https://next.c2platform.org/docs/glossary/#project-variable" title="Glossary term: Click for definition">project variables</a> with a project prefix such as <code>c2_</code>. Use documented upstream <code>ansible_*</code> variables only for Ansible-defined behavior such as <code>ansible_become_user</code>. </div> <h2 id="problem">Problem</h2> <p>Without a clear prefixing rule it is not always obvious whether a variable is a role&rsquo;s public interface, an internal helper variable, or an inventory-only project variable.</p>