.data[&#39;cert-chain\.pem&#39;]}&#34; | base64 --decode | openssl x509 -in /dev/stdin -text -noout
</code></pre><p>The text output should include:</p><pre><code class=language-plain data-expandlinks=true data-repo=istio>X509v3 Subject Alternative Name:
    DNS:example1.istio-system.svc, DNS:example1.istio-system
</code></pre><h2 id=regenerating-a-dns-certificate>Regenerating a DNS certificate</h2><p>Istio can also regenerate DNS certificates that were mistakenly deleted. Next,
we show how you can delete a 