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Devops-exercises/exercises/aws/solutions/no_application.md
abregman 43d714fa12 Add a couple of AWS exercises 
Questions as well were added.
2021-11-12 14:05:05 +02:00

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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