advanced·20 min·付费
DNS Round-Robin Backend Failure
Internal DNS round-robin sometimes sends users to a backend that went offline after maintenance.
场景
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.
学习目标
- dns
- round-robin
- multi-address records
拓扑与配置
此环境包含 5 台设备（1 Dns, 3 Hosts, 1 Switch）。你将配置并排查上方列出的网络技能。