Repos-que-me-gustan/devops-exercises
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devops-exercises/topics/aws/exercises/no_application/solution.md
abregman 99c4e02ecf Rename exercises dir 
Name it instead "topics" so it won't be
strange if some topics included "exercises" directory.
2022-08-02 01:53:56 +03:00

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No Application :'(

Objectives

Explain what might be possible reasons for the following issues:

  1. Getting "time out" when trying to reach an application running on EC2 instance
  2. Getting "connection refused" error

Solution

  1. 'Time out' Can be due to one of the following:
  • Security group doesn't allow access
  • No host (yes, I know. Not the first thing to check and yet...)
  • Operating system firewall blocking traffic
  1. 'Connection refused' can happen due to one of the following:
  • Application didn't launch properly or has some issue (doesn't listens on the designated port)
  • Firewall replied with a reject instead of dropping the packets