advanced·20 min·مدفوع
DNS Round-Robin Backend Failure
Internal DNS round-robin sometimes sends users to a backend that went offline after maintenance.
السيناريو
Westhaven Energy's internal portal uses two backend addresses so maintenance on one host should not interrupt users. After a maintenance window, clients receive an answer that sometimes leads to a service that no longer responds. Repair the name-service configuration so the published pool contains only usable backends, while preserving the remaining service path.
أهداف التعلّم
- dns
- round-robin
- multi-address records
الطوبولوجيا والإعداد
تحتوي هذه البيئة على 5 جهازًا (1 Dns, 3 Hosts, 1 Switch). تقوم بإعداد واستكشاف أخطاء المهارات المذكورة أعلاه وإصلاحها.