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Nc tech4 good_presentation_2014_up

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Welcome to the Website Emergency Room: Find and Pinpoint Problems When Everything Falls Apart

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Nc tech4 good_presentation_2014_up

  1. 1. Welcome to the Website Emergency Room: Find and Pinpoint Problems When Everything Falls Apart Julia Kulla-Mader Jackson River @juliakm
  2. 2. It’s 6am. Your website is down. People care.
  3. 3. You are the webmaster and it is your job to get the site back up.
  4. 4. The usual solution (restarting the server) isn’t working.
  5. 5. You need a way to diagnose and troubleshoot difficult website problems.
  6. 6. Look for clues to avert a website crisis.
  7. 7. 1. Check for obvious causes like a service outage
  8. 8. Is it down for everyone?
  9. 9. Is the ISP down?
  10. 10. Is DNS down?
  11. 11. Did someone do something by accident? (User error)
  12. 12. Are all databases online? (Example of deleting a DB)
  13. 13. Is Apache on?
  14. 14. Is the site “offline”?
  15. 15. Can you reproduce the issue? vs
  16. 16. Browser?
  17. 17. Operating system?
  18. 18. Mobile?
  19. 19. 2. Check with the beat cops (tools)
  20. 20. Are there any server red flags?
  21. 21. High memory usage
  22. 22. Full disk Disk Space Free Used
  23. 23. High CPU
  24. 24. Are all of your security patches up-to-date?
  25. 25. Open Source Code (Drupal/Wordpress)
  26. 26. What does Google say?
  27. 27. Google Webmaster tools says the site is hacked
  28. 28. 10 percent drop or increase in traffic
  29. 29. Odd search queries – View the site as a bot
  30. 30. 3. Interview everyone connected to the event
  31. 31. How do staff web administrators use your site?
  32. 32. Maintain a description of common operations on the site. Then walk through the process.
  33. 33. Did you change anything recently?
  34. 34. How to website visitors outside of your organization use the site?
  35. 35. Look at the most popular parts of your site
  36. 36. Neighbors: How do the other sites sharing your IP address use the site?
  37. 37. Reverse IP lookup

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