# Troubleshooting

This page lists some troubleshooting solutions in the cloud native community for operation personnel reference.

- [How to Solve Prometheus Storage Capacity Problem?](https://mp.weixin.qq.com/s/TMApz8FxT91qBvS1fzuTVw)

    Poor scalability of standalone storage is a widely criticized problem with Prometheus. This article gives 3 cluster solutions: Prometheus federated cluster, remote storage solution, Prometheus self-built cluster. These three solutions can well solve Prometheus storage problems.

- [How Can Nettrace Quickly Perform Network Troubleshooting in Cloud Native Scenarios?](https://mp.weixin.qq.com/s/0n7kbOhHr6m5JClTrSIysA)

    [nettrace](https://github.com/OpenCloudOS/nettrace) is an eBPF-based network toolset integrating network message tracing (fault location), network troubleshooting, and network anomaly monitoring.
    Provides a more efficient and easy-to-use method to solve network problems in complex scenarios.

- [Istio Operations Practice: How to Avoid 503 UC Errors](https://mp.weixin.qq.com/s/4YIYPIszyKyWVMKXnXtHbg)

    503 UC is a common problem encountered during Istio/Envoy usage.
    This article analyzes the principle of 503 UC caused by TCP server keepalive timeout and how to circumvent it.

- [K8s CNI Cilium Network Troubleshooting Guide](https://mp.weixin.qq.com/s/jBuNPOKbL-keXmzq1gq-mQ)