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DNS 동작 원리를 이해하고, 실무에서 자주 발생하는 DNS 문제를 체계적으로 디버깅하는 방법을 다룹니다. dig, nslookup 등 도구 활용법부터 Kubernetes CoreDNS 트러블슈팅까지 실전 예제와 함께 정리합니다.
Dns
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