Pushgateway Heartbeat Gotcha: When ndots and NetworkPolicy Silently Eat Your Alerts
How ndots:5, a wildcard DNS record, and a default-deny NetworkPolicy combine to swallow CronJob heartbeats without a single error or alert.
#dns
3 posts
AdGuard Home: Network-Wide DNS Filtering with Failover
Setting up AdGuard Home for network-wide DNS filtering with a robust failover strategy to prevent total internet outages.
Wildcard DNS + ndots:5: The TLS Nightmare and How to Fix It
Kubernetes default DNS settings can cause TLS certificate mismatches when using wildcard DNS. Here is how to debug and fix it.