Open-Source Observability · orhun

kmon

kmon is a terminal-based graphical interface for managing Linux kernel modules and monitoring kernel activity in real time. It consolidates functionality typically spread across command-line tools like dmesg, lsmod, and modprobe into a single interactive application written in Rust.

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Source: GitHub — github.com/orhun/kmon

2.9k

GitHub stars

Forks

Rust

Primary language

GPL-3.0

License (OSI-approved)

Key facts

Objective fields from the source. Values we can't verify are shown as “Unknown” rather than guessed.

Field	Value
Repository	orhun/kmon
Owner	orhun
Primary language	Rust
License	GPL-3.0 — OSI-approved
Stars	2.9k
Forks	92
Open issues	16
Latest release	v1.7.1 (2024-12-15)
Last updated	2025-04-22
Source	https://github.com/orhun/kmon

What kmon is

kmon is a TUI (text user interface) application written in Rust using Ratatui and termion libraries. It provides kernel module management (load, unload, blacklist, reload), kernel activity monitoring via dmesg ring buffer inspection, module dependency analysis, and interactive searching and sorting capabilities.

Quickstart

Get the kmon source

Clone the repository and explore it locally.

terminalbash

1git clone https://github.com/orhun/kmon.git2cd kmon3# follow the project's README for install & configuration

Need it deployed, integrated, or customized instead? DEV.co ships production installs.

Best use cases

Linux system administration and troubleshooting

Quickly inspect loaded kernel modules, view hardware events, and manage LKMs without switching between multiple command-line tools. Useful for diagnosing driver issues or kernel-related problems in a unified interface.

Embedded Linux and IoT device management

Manage kernel modules on resource-constrained systems or embedded devices where a lightweight TUI is preferable to heavy GUI tools. Helps with runtime module loading/unloading to optimize memory usage.

Development and kernel module testing

Monitor kernel messages and module dependencies in real time during kernel module development and debugging cycles, reducing context-switching between terminal windows.

Implementation considerations

Requires Rust toolchain (cargo) to build from source; pre-built binaries are available via Arch Linux, Nixpkgs, Alpine Linux, and crates.io, reducing build overhead.
Must run with elevated privileges (sudo) for module loading/unloading and kernel ring buffer access; consider sudoers configuration and least-privilege principles.
Interactive TUI requires a compatible terminal emulator; termion library supports Linux but behavior may vary across terminal implementations.
Integration with existing kernel module workflows (modprobe, lsmod commands) is straightforward; kmon wraps standard kernel interfaces rather than replacing them.
Memory footprint and performance impact are minimal (written in Rust), making it suitable for resource-constrained environments.

When to avoid it — and what to weigh

Requires non-Linux kernel management — kmon is Linux-specific. Systems running other Unix variants, Windows, or macOS kernels cannot use this tool.
Need advanced kernel configuration or compilation — kmon manages loaded modules and activity but does not handle kernel recompilation, patching, or low-level kernel configuration tasks that require specialized kernel build tooling.
Enterprise monitoring infrastructure required — kmon is a standalone CLI tool with no built-in support for centralized logging, alerting, metrics export, or integration with monitoring platforms like Prometheus or ELK.
GUI or remote-access requirements — kmon is terminal-based only; it does not provide a graphical interface, web UI, or native remote management capability (though SSH access is possible).

License & commercial use

kmon is licensed under GPL-3.0 (GNU General Public License v3.0). This is a copyleft open-source license requiring that any derivative works or distributions be released under the same license. Commercial use is permitted, but any modifications or bundled distributions must include source code and license text.

GPL-3.0 permits commercial use and modification, but requires source code disclosure and GPL-3.0 relicensing of derivatives. If bundling kmon in a proprietary product, consult legal counsel to ensure compliance, as any modifications become GPL-3.0 licensed and source must be disclosed.

DEV.co evaluation signals

Editorial assessment — not user reviews. Directional, with an explicit confidence level.

Signal	Assessment
Maintenance	Active
Documentation	Strong
License clarity	Clear
Deployment complexity	Low
DEV.co fit	Good
Assessment confidence	High

Security considerations

kmon operates in protected kernel space and requires elevated privileges (sudo). Security posture depends on the host system's kernel security configuration. No known security advisories are stated in the provided data. Audit sudo usage carefully; limit kmon access to trusted administrators. As a read-mostly tool (except for explicit load/unload actions), the attack surface is relatively small compared to kernel modules themselves.

Alternatives to consider

dmesg + lsmod + modprobe (native Linux tools)

Lightweight, no external dependencies, ubiquitous on all Linux systems. Lacks unified UI and requires context-switching between commands; less convenient for frequent kernel inspection.

systemtap or kprobes (kernel tracing tools)

More powerful for advanced kernel debugging and performance analysis. Steeper learning curve and overkill for simple module management; requires kernel development headers.

htop or top (process/system monitors)

Broader system monitoring (CPU, memory, processes) but minimal kernel module visibility. Not designed for module management; complementary rather than a direct replacement.

Software development agency

Build on kmon with DEV.co software developers

Our experienced DevOps and Linux specialists can assess your kernel management workflows, configure kmon for your environment, and integrate it into your system administration toolchain. Contact us for a consultation.

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kmon FAQ

Can kmon be used without root/sudo privileges?

Partial functionality (viewing modules and kernel logs) may work with reduced privileges, but loading, unloading, blacklisting, and reloading modules require sudo or root access.

Does kmon require any external dependencies beyond Rust?

Rust compiler (rustc) and cargo are required to build from source. Pre-compiled binaries (Arch Linux, Nixpkgs, crates.io) eliminate this requirement. Runtime dependencies on Ratatui and termion are bundled in the Rust build.

Can kmon export or log kernel activity to a file or remote system?

Not natively. kmon reads the kernel ring buffer (dmesg) in real-time but does not have built-in export, logging, or remote forwarding capabilities. External shell redirection or log-aggregation tools are needed.

Is kmon compatible with non-systemd or minimal Linux distributions?

Yes. kmon interacts with kernel module interfaces and dmesg directly, not systemd. It should work on any Linux distribution (systemd-based or otherwise) and minimal environments like Alpine Linux.

Software developers & web developers for hire

DEV.co helps companies turn open-source tools like kmon into production software. Our software development services cover the full lifecycle — architecture, web development, integration, and maintenance — delivered by software developers and web developers who ship. Engage our software development agency to implement or customize it for your open-source observability stack.

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