\
--cacert httpbin.example.com/2_intermediate/certs/ca-chain.cert.pem \
https://httpbin.example.com:$SECURE_INGRESS_PORT/status/418
</code></pre><p><code>httpbin</code> 服务会返回 <a href=https://tools.ietf.org/html/rfc7168#section-2.3.3>418 I&rsquo;m a Teapot</a>。</p></li><li><p>删除 Gateway 的 <code>Secret</code>，并新建另外一个，然后修改 Ingress Gateway 的凭据：</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl -n istio-system delete secret httpb