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Using Cilium and GKE Dataplane V2? Be sure to check out Hubble for observability
- Hubble is a power tool for examining packet flow and network telemetry data and adding Kubernetes context into it.
- GKE Dataplane V2 observability provides a Managed Hubble solution that enables easy accessibility to network telemetry data and command-line tools analysis.
- The Hubble UI is not included in the initial deployment, but can easily be enhanced by adding the web-based interface for effective troubleshooting of Kubernetes environment.
- The article explores various scenarios using Hubble CLI and UI to troubleshoot Kubernetes issues, including delay in name resolution, failure of DNS queries, and network policy mishap.
- Hubble's flow logs provide a clear analysis of scenarios where the kube-dns pods are unavailable due to network issue.
- Hubble CLI is also powerful for optimization, ensuring all configurations such as network policy and DNS resolve correctly.
- By filtering traffic by namespaces and labels, Hubble UI allows you to troubleshoot potential problems and isolate specific traffic flows.
- Hubble offers a solid foundation for understanding and observing the Cilium-based Dataplane V2 clusters.
- GKE observability provides detailed visibility with additional Kubernetes context to network packet flow.
- Accessing Hubble is a significant step in operating and effectively troubleshooting Kubernetes environments.
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