system secret generic nginx-ca-certs --from-file=example.com.crt
</code></pre></li><li><p>To include a volume mounted from the new created secret, update the <code>istio-egressgateway</code> deployment.
To patch the <code>istio-egressgateway</code> deployment, create the following <code>gateway-patch.json</code> file:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ cat &gt; gateway-patch.json &lt;&lt;EOF
[{
  &#34;op&#34;: &#34;add&#34;,
  &#34;path&#34;: &#34;/spec/template/spec/c