https://methakur.info/tags/azure/Recent content in Azure on Munish Thakur | DevOps EngineerHugoen-usMon, 28 Oct 2024 00:00:00 +0000https://methakur.info/blog/azure-auth-kubernetes/Mon, 28 Oct 2024 00:00:00 +0000https://methakur.info/blog/azure-auth-kubernetes/<p>Django migrations were failing in our Kubernetes cluster. The error looked innocent enough:</p> <div class="highlight"><div style="color:#f8f8f2;background-color:#282a36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"> <table style="border-spacing:0;padding:0;margin:0;border:0;"><tr><td style="vertical-align:top;padding:0;margin:0;border:0;"> <pre tabindex="0" style="color:#f8f8f2;background-color:#282a36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">1 </span><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">2 </span></code></pre></td> <td style="vertical-align:top;padding:0;margin:0;border:0;;width:100%"> <pre tabindex="0" style="color:#f8f8f2;background-color:#282a36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-python" data-lang="python"><span style="display:flex;"><span>azure<span style="color:#ff79c6">.</span>identity<span style="color:#ff79c6">.</span>_exceptions<span style="color:#ff79c6">.</span>ClientAuthenticationError: </span></span><span style="display:flex;"><span>DefaultAzureCredential failed to retrieve a token <span style="color:#ff79c6">from</span> the included credentials<span style="color:#ff79c6">.</span> </span></span></code></pre></td></tr></table> </div> </div><p>But this single error was blocking all database migrations, meaning <strong>no deployments</strong>.</p> <h2 id="the-problem">The Problem</h2> <p>Our Django app used Azure Blob Storage for file uploads. During migration, Django initializes all storage backends - including Azure. But the pod had no credentials.</p>