title: nginx ingress - unexpected error generating SSL certificate with full intermediate chain CA certs: Invalid certificate
body: <p>I am running nginx ingress on my kubernetes 1.9 cluster. Using internal singed certificate for the application URL, I have include root &amp; intermediate certificate part of the TLS secretes.</p>
  
  <p>From my nginx log file, I see this message frequently. </p>
  
  <pre><code>backend_ssl.go:139] unexpected error generating SSL certificate with full intermediate chain CA certs: Invalid certificate.
  </code></pre>
  
  <p>How to get more details about this error message?</p>
  
  <p>error message:</p>
  
  <pre><code>E0129 01:11:39.582118       7 backend_ssl.go:139] unexpected error generating SSL certificate with full intermediate chain CA certs: Invalid certificate.
  E0129 01:11:39.582689       7 backend_ssl.go:139] unexpected error generating SSL certificate with full intermediate chain CA certs: Invalid certificate.
  E0129 01:11:39.583031       7 backend_ssl.go:139] unexpected error generating SSL certificate with full intermediate chain CA certs: Invalid certificate.
  E0129 01:11:39.583308       7 backend_ssl.go:139] unexpected error generating SSL certificate with full intermediate chain CA certs: Invalid certificate.
  </code></pre>