title: Sporadic Google 404's on my Google Compute Engine instance
body: <p>I'm hosting a website on a GCE instance. I have the DNS for domain.com pointed to a static IP that I have reserved on Google Cloud. This instance runs nginx on port 80, and forwards requests to a node app running on 8080. </p>
  
  <p>It's been running smoothly for months, but today my client has been complaining that they sometimes see 404s. I opened the site in a browser and began refreshing. I'm noticing that all pages and assets that are requested from this domain will randomly respond with a Google 404 page</p>
  
  <p><a href="https://i.stack.imgur.com/JUlUx.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JUlUx.png" alt="enter image description here"></a></p>
  
  <p>I opened both nginx and node access logs and I see the request is not even making it to nginx. It's not a DNS issue, because if I run curl a few times: <code>curl -I 123.123.123.123</code> I will still see it respond with a 404 every so often.</p>
  
  <p>Google cloud's status page indicates no outages. What am I missing? Where else can the problem lie?</p>