Octant is a web-based platform developed by VMware for developers to understand and navigate the complexity of Kubernetes clusters. The project is now archived and no longer under active development. Written primarily in Go, Octant provides a graphical interface accessible through a web browser that runs locally on port 7777, serving as a developer-focused alternative to command-line kubectl interactions.
The core functionality of Octant centers on several key features designed to improve developer experience with Kubernetes. The Resource Viewer graphically displays relationships between objects in a cluster, using color coding to represent workload performance and object status. A Summary View consolidates status and configuration information typically scattered across multiple kubectl commands into a single aggregated page. The platform includes port forwarding capabilities that allow developers to forward local ports to running pods with a single button click, supporting multiple pods across different namespaces for debugging purposes. Log streaming functionality enables viewing pod and container activity logs without requiring multiple terminal windows, while label filtering helps organize and inspect workloads in namespaces with high object volumes.
Navigation features allow developers to easily switch between namespaces and contexts across different clusters, with support for multiple kubeconfig files. This addresses a common pain point in multi-cluster Kubernetes environments. The platform was designed to be part of a developer's toolkit for gaining insight into Kubernetes complexity and approaching operational challenges.
A defining characteristic of Octant is its plugin system, which provides high extensibility through gRPC-based plugins. Plugin authors can add custom components and functionality on top of existing views, allowing organizations to tailor the platform to their specific needs. An example plugin is included in the repository at cmd/octant-sample-plugin, and the community has created additional plugins tagged with the octant-plugin topic on GitHub.
Installation options span multiple operating systems and package managers. Linux users can install via .deb or .rpm packages, Windows users have access through Chocolatey or Scoop, and macOS users can install via Homebrew. Pre-built binaries are available for all three platforms from the releases page. Nightly builds are also provided for early access to upcoming features and for plugin authors needing the latest plugin APIs, though these are noted as potentially less stable than tagged releases.
Octant follows semantic versioning with an n±1 version skew policy similar to kubectl, meaning each version supports the current Kubernetes version plus one version before and after. The project maintains communication channels through Kubernetes Slack, Twitter, a Google group, and GitHub issues for feature requests and bug reports. Contributors are required to sign a Developer Certificate of Origin, and the project includes comprehensive documentation for both users and plugin developers. The codebase is licensed under the Apache License, Version 2.0.
