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You mean an ICMP request? The IPs were anycast and did not become unreachable until all edge routers had stopped announcing BGP routes. At that point the failur
by dward 10y ago
You mean an ICMP request? The IPs were anycast and did not become unreachable until all edge routers had stopped announcing BGP routes. At that point the failure was global. Check out the postmortem, it's a good read.
- ikeboy 10y agoThe servers became unreachable, but the IPs weren't unreachable until all the servers were reconfigured. My test should have caught this bug: > In this event, the canary step correctly identified that the new configuration was unsafe. Crucially however, a second software bug in the management software did not propagate the canary step’s conclusion back to the push process, and thus the push system concluded that the new configuration was valid and began its progressive rollout.