Intermediatenetworking
The DNS Nightmare
It's 2 PM on a Tuesday. After migrating DNS providers, your main application is unreachable for half your users. Some regions work, others don't. Support tickets are flooding in. Diagnose and fix the DNS propagation disaster.
INCOMING INCIDENT
$ incident --describe the-dns-nightmare
It's 2 PM on a Tuesday. After migrating DNS providers, your main application is unreachable for half your users. Some regions work, others don't. Support tickets are flooding in. Diagnose and fix the DNS propagation disaster.
5
Decision Points
60s
Per Step
500
Max Score
300
Passing Score