Case

DNS: Hostname not resolving

DNS record validation using dig and multiple resolvers to confirm correct routing.

GitHub Project All Cases

ProblemHostname returns NXDOMAIN or points to the wrong target, causing the site to be unreachable.
SolutionCorrect the DNS record (A/CNAME), then verify with multiple resolvers until consistent.
Toolsdig · nslookup · public resolvers
OutcomeHostname resolves to the correct target and traffic reaches the service.

kubectl get pods -n <ns>

kubectl describe pod <pod> -n <ns>

kubectl logs <pod> -n <ns> --previous

kubectl get events -n <ns> --sort-by=.lastTimestamp | tail

systemctl status <service> --no-pager

journalctl -u <service> -n 200 --no-pager