Recursive DNS in ZRH returning SERVFAIL for some zones

타임라인

1. 해결됨2024. 10. 9. 오후 7:38 UTC

   Both resolvers in ZRH have answered every query cleanly for 15 minutes. Duration: 18 minutes.

2. 원인 확인2024. 10. 9. 오후 7:28 UTC

   One of the two resolvers has a corrupted DNSSEC trust anchor after an automatic update. We have taken it out of rotation; the second resolver is handling all queries.

3. 조사 중2024. 10. 9. 오후 7:24 UTC

   The recursive resolvers we provide to machines in ZRH are returning SERVFAIL for a subset of zones since 19:20 UTC. Machines configured with their own resolvers are not affected.