How to troubleshoot remote write issues in Prometheus
Prometheus’s remote write system has a lot of tunable knobs, and in the event of an issue, it can be unclear which ones to adjust. In this post, we’ll discuss some metrics that can help you diagnose remote write issues and decide which configuration parameters you may want to try changing. First, let’s discuss how remote write is implemented. In the past, remote write would duplicate samples coming into Prometheus via scrape.