Sentry is an error monitoring tool that aims to eliminate noise from Kubernetes-related errors and warnings by sending them to its platform for clean presentation and intelligent grouping. The sentry-kubernetes container can be launched in a Kubernetes cluster to achieve this, providing visibility into events grouped by namespace, name, and kind, with useful tags and breadcrumbs for filtering and tracking. This tool can also be installed using Helm charts, offering an optional way to manage pre-configured resources.