title: Can not start an instance using custom images on Google Cloud Platform
body: <p>I'm running my Production on GCP in an <strong>instance group</strong> with autoscaling on. Then, I tried to scale up my servers, but an instance couldn't start from my <strong>everyday backup image</strong>.</p>
  
  <p>I checked the logs and I saw that my instance was inserted and automatically deleted.</p>
  
  <p><a href="https://i.stack.imgur.com/evrQe.png" rel="nofollow noreferrer">Logs.</a></p>
  
  <p>Then I tried to create an instance (not in any <strong>instance groups</strong>), I checked the logs, and I found that the instance was started after nearly 10 minutes.</p>
  
  <p><a href="https://i.stack.imgur.com/kT2iI.png" rel="nofollow noreferrer">Logs</a></p>
  
  <p>I wanted to know why it took almost 10 minutes to start an instance from a custom image?</p>