Let's Make DNS Outage Suck Less | kvz.io

Unfortunately the Linux DNS resolver has no direct support for detecting and doing failovers for DNS servers. It keeps feeding requests to your primary resolving nameserver, waits for a configured timeout, attempts again, and only then tries the second nameserver. This typically means nearly 30s delay for all request as long as your primary nameserver is unreachable. It doesn't learn to directly t

[tmatsuu]

DNS解決ができないリゾルバをフェイルオーバするシェルスクリプト。いいねー。Linuxは標準機能でタイムアウトを短くできるけど落とせないもんね。よくリゾルバが死ぬAWSにも良さげ

[cakephper]

Linuxの名前解決時にPrimaryDNSが落ちてる場合の切り替えスクリプト