 to ignore errors for non-existent resources because they may have been deleted hierarchically.</p><p>a) If you installed Istio with mutual TLS authentication disabled:</p><div class="language-bash highlighter-rouge"><div class="highlight"><pre class="highlight"><code>kubectl delete <span class="nt">-f</span> install/kubernetes/istio.yaml
</code></pre></div></div><p><em><strong>OR</strong></em></p><p>b) If you installed Istio with mutual TLS authentication enabled:</p><div class="language-bash highlighter-r