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Application unreachable due to NodeJS tasks


  • Website becomes unreachable for a short period of time.
  • Load balancer unable to reach the application containers.
  • Logs of both the load balancer and the application containers do not provide insight into any issue.


  • Are there processes running around the same times as the outage(s) or backup scripts?
  • Can you reach the containers by IP address and DNS record?
  • Are the web application containers running?
  • Is there any DNS outage on Docker Cloud (


If none of the above solve the issue, check for unresponsiveness caused by NodeJS tasks. If NodeJS tasks are suspected, moved them to a different machine. 

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