Company
Date Published
Author
Udi Rot
Word count
2698
Language
English
Hacker News points
1

Summary

Scientists have discovered that sea turtles use the Earth's magnetic field to navigate and find their way home. Turtles also rely on this magnetic field to determine their internal compass, which helps them navigate at sea. Similarly, Kubernetes cluster management can be complex and difficult to understand, making it challenging for teams to gain insights into inter-dependencies between workloads running in the cluster. Visualization tools can help map out the cluster's network trails, allowing teams to identify central points of failure or security anomalies. Caretta is a standalone OSS tool that leverages eBPF technology to provide a lightweight and frictionless solution for mapping Kubernetes clusters. It collects data from internal kernel network stack objects and aggregates it to create a counter for each link, which can be used to visualize the cluster's network map using Grafana's Node Graph feature. The tool also resolves source and destination IP addresses to k8s-defined names, allowing teams to gain landscape insights into their production clusters. By using Caretta, teams can unlock critical data about their cluster's inter-dependencies and improve their overall understanding of the system.