SRE Technical Test

Below you will find three tasks that will help demonstrate your techincal apptitude in three separate domains of knowledge.

1. Infrastructure is best represented as code and provisioning of resources should be automated as much as possible. Here at 2U, Terraform is our tool of choice. In the first task under Infrastructure, write a reusable terraform configuration. If you have any questions regarding how to work within this space, please ask your interviewers.

2. Assess your ability to write scripts. Scripts help us accomplish day-to-day tasks quickly and more effifiently. Whether it's a one off script to help import, migrate, update terraform states or a task to help developers bootstrap application builds within our ci/cd pipelines.

3. Finally, we will do a bit of sys admin work. For this we leverage https://sadservers.com which provides some scenarios to solve.

Setup

Please goto this url prior to the interview to ensure your workstation is able to access it and so you can get a feel for the vscode workspace.

• https://gitpod.io/#https://github.com/2uinc/devops-test

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Infrastructure

1. Build out some Infrastructure for AWS using Terraform that can be used in a repeatable way. You can plan / apply config once complete.

What to build:

• Total of three (3) EC2 Instances with the following:
  • Instance Type: m5.large
  • AMI: ami-094125af156557ca2
  • Region: us-west-2
• Each instance should have an additional 100G EBS Volume attached
• Each instance should include unique Name tags

NOTE: No VPC Required

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Programming/Scripting

2. Choosing a Language of your choice, write code to achieve:

   1. Rename Files
      • Rename all the files in "coding/images" directory from "jpg" to "jpeg"
   2. Reverse a String
      • Input String: edxcodinginterview
      • Expected Output: weivretnignidocxde
   3. Reverse the last four (4) characters of string
      • Input String: edxcodinginterview
      • Expected Output: edxcodinginterweiv

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Linux Troubleshooting

3. Sad Servers

   1. Goto https://sadservers.com
   2. Select "Give Me a Sad Server"
   3. Read the General Instructions
   4. Solve the Scenario Given
   5. If time allows, choose More Scenarios
   6. Select the next scenario
   7. Repeat starting from step 3 until time expires