Create the notes that make future upgrades and disaster recovery much easier
Goal
You should be able to demonstrate the result described in the lesson and explain why each step was necessary.
You should be able to demonstrate the result described in the lesson and explain why each step was necessary.
Step-by-step
01
Draw the network
Show router, switches, servers, public services, and private administration.
02
Inventory hardware
Record model, storage, RAM, OS, IP, and purpose.
03
Record dependencies
Know which site depends on which database, DNS record, certificate, and backup job.
04
Record secrets by reference
Document where a secret is stored, not the secret itself.
05
Track changes
Keep dates and short reasons for important firewall, DNS, and server changes.
06
Test the rebuild notes
Use the documentation to recreate a test service and fill in anything you forgot.
Verify before moving on
You should be able to demonstrate the result described in the lesson and explain why each step was necessary.
You should be able to demonstrate the result described in the lesson and explain why each step was necessary.
Troubleshooting
If a command or screen differs from the lesson, stop and verify the version you are using before forcing a change.
What you learned
You now understand the purpose of this part of the system and have a concrete result you can verify before continuing to the next lesson.