A Sysdig + Kubernetes adventure, Part 2: Troubleshooting Kubernetes services

The blog post explores the challenges and solutions associated with troubleshooting Kubernetes services using sysdig, focusing on scenarios where application failures occur due to misconfigurations. It begins with a detailed examination of how a Kubernetes service operates under normal conditions, including DNS resolution by SkyDNS and request forwarding via the Kubernetes proxy. The article then delves into specific troubleshooting scenarios, such as incorrect port configurations, label mismatches, firewall misconfigurations, and DNS issues when accessing services from the host. Through examining system events and proxy behavior, the author provides insights into identifying and resolving these issues, highlighting the importance of understanding expected system behavior for effective troubleshooting.

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