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Cpulse – See why your Docker Compose stack is stuck
- Authors
- Name
- DeepHorus
A new open-source terminal user interface called Cpulse has been released to help developers quickly diagnose why their Docker Compose stacks are stuck. The tool, created by developer hyturing, provides a real-time visualization of container dependency trees and identifies root causes without requiring users to sift through interleaved logs. With Docker Compose setups often generating thousands of mixed log lines, Cpulse aims to streamline debugging by offering a structured, graphical overview directly in the terminal.
Many developers using Docker Compose face the challenge of pinpointing which service is blocking startup when a stack fails. The default 'docker compose up' command dumps logs from all containers into one stream, making it difficult to isolate issues. Cpulse addresses this by rendering the dependency graph as a tree, naming the root cause, and allowing users to probe, restart, or inspect containers without leaving the TUI. The tool extracts container states from exit codes, restart counts, and dependency relationships, distinguishing between successful init containers and crashed ones—a task that previously required manual log reading.
Key features include commands like 'cpulse doctor' for non-interactive diagnosis, which prints root causes and exits with code 1 for critical findings. The interface auto-discovers all containers on the local Docker daemon, grouping Compose-managed ones by project and others in a flat section. Installation is available via Homebrew on macOS or through direct download from GitHub Releases, with support for macOS and Linux. The project, written in Go, requires Go 1.25+ for building from source.
The implications for developer productivity are significant. By aggregating container states, live stats, and dependency information into a single view, Cpulse reduces the time spent jumping between terminal tabs and scrolling through logs. Users can restart, stop, start, rebuild, or cascade restarts to dependents directly from the interface. The tool also offers features like scaled startup Gantt charts, health probes, and an in-TUI exec shell, making it a comprehensive diagnostic hub for complex microservices environments.
Early reactions from the developer community highlight the tool's utility in filling a gap left by existing solutions like Lazydocker. Hyturing notes that Cpulse 'turns that graph into something you can just look at,' emphasizing its ability to reveal blocking relationships at a glance. The project’s MIT license encourages contributions, with a detailed CONTRIBUTING.md file guiding potential collaborators.
Looking ahead, Cpulse could become an essential component in Docker Compose workflows, especially as microservices architectures grow more complex. Its open-source nature allows for continuous improvement based on user feedback. The developer plans to maintain the tool and welcomes pull requests. With the rising popularity of containerized applications, tools like Cpulse that enhance debugging efficiency are likely to see widespread adoption.
