This article introduces debugwand, a tool for debugging Python applications in Kubernetes and Docker without the usual setup hassles. It leverages the new sys.remote_exec() feature in Python 3.14 to inject a debug server into a running process, allowing for real-time debugging with minimal configuration.

Mirrord allows developers to run local processes in a Kubernetes context without deploying to the cloud. It connects your local environment to a selected pod, mirroring traffic and file interactions. Available as a VS Code extension, IntelliJ plugin, and CLI tool.

Tim Goodwin developed Kamera, a simulation tool for verifying Kubernetes controller logic. It helps developers understand and debug controller interactions without needing a live cluster, using model checking to explore execution paths and identify potential issues.

Pinterest encountered a significant performance issue during the migration of its search infrastructure, Manas, to Kubernetes, where one in a million search requests experienced latency spikes. The investigation revealed that cAdvisor’s memory monitoring processes were causing excessive contention, leading to these delays. The team resolved the issue by disabling a specific metric in cAdvisor, allowing them to continue their migration efforts without compromising performance.