https://krkn-chaos.dev/tags/libraries/Recent content in Libraries on KrknHugoenhttps://krkn-chaos.dev/docs/developers-guide/krkn-lib/Mon, 01 Jan 0001 00:00:00 +0000https://krkn-chaos.dev/docs/developers-guide/krkn-lib/<p><code>krkn-lib</code> provides the Kubernetes, OpenShift, telemetry, metrics, and data-model building blocks used by Krkn scenarios. Prefer its existing helpers for cluster operations so scenarios share authentication, behavior, and testable interfaces.</p> <h2 id="use-the-client-supplied-to-the-plugin"> Use the client supplied to the plugin <a class="td-heading-self-link" href="#use-the-client-supplied-to-the-plugin" aria-label="Heading self-link"></a> </h2> <p>Krkn passes a <code>KrknTelemetryOpenshift</code> instance as <code>lib_telemetry</code> to <code>run()</code>. Obtain the Kubernetes helper from it:</p> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-python" data-lang="python"><span class="line"><span class="cl"> <span class="n">kubernetes</span> <span class="o">=</span> <span class="n">lib_telemetry</span><span class="o">.</span><span class="n">get_lib_kubernetes</span><span class="p">()</span> </span></span><span class="line"><span class="cl"> <span class="n">namespaces</span> <span class="o">=</span> <span class="n">kubernetes</span><span class="o">.</span><span class="n">list_namespaces</span><span class="p">()</span> </span></span><span class="line"><span class="cl"> <span class="n">pods</span> <span class="o">=</span> <span class="n">kubernetes</span><span class="o">.</span><span class="n">list_pods</span><span class="p">(</span><span class="n">namespace</span><span class="p">)</span> </span></span></code></pre></div><p>For OpenShift-specific operations, use <code>lib_telemetry.get_lib_ocp()</code> and the methods documented for the installed library version. The wrapper has already been initialized for the run; creating another client with a separately loaded kubeconfig can make the plugin act on the wrong cluster.</p>