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Appreciation for old‑school, functional visualizations – Users value the clarity and honesty of classic graphs compared to today’s flashier alternatives.
“It struck me how much more useful information the graphs and diagrams here provide over their flashier counterparts you commonly see today. The old‑fashioned aesthetic almost feels like a cue what I'm looking at won't be slop.” – rkagerer
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Warning about AI‑generated “slop” mimicking the old style – There’s concern that LLMs could produce low‑quality content that imitates the retro aesthetic, making it harder to discern genuine value.
“Don't worry, I'm sure we can teach a slop generator how to emulate this style. LLMs already know how to use rrttool and mrtg! Coming soon to an Internet near you, faux‑historical slop writeups.” – walrus01
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Continued relevance of rrdtool in modern monitoring – Despite its vintage look, rrdtool remains actively used in current tools, showing the old style’s practical endurance.
“Some of these charts are made using rrdtool: https://oss.oetiker.ch/rrdtool/ rrdtool is still used widely today by projects like Munin, LibreNMS and Collectd.” – Levitating
Flawed routers flood University of Wisconsin internet time server (2003)
📝 Discussion Summary (Click to expand)
🚀 Project Ideas
Generating project ideas…
RetroChart: Classic RRDTool‑Style Charting Library
Summary
- A lightweight library that turns time‑series data into SVG/PNG charts mimicking the clean, no‑frills look of rrdtool graphs.
- Provides developers with an instant “retro” visual alternative to flashy dashboards, delivering clarity without noise.
Details
| Key | Value |
|---|---|
| Target Audience | Developers, DevOps engineers, and sysadmins who build internal tools or monitoring scripts |
| Core Feature | API to generate classic line/area/bar charts with grid, axis labels, and legend in the rrdtool aesthetic |
| Tech Stack | Python (NumPy, Matplotlib with custom style) + optional WASM build via Pyodide for browser use |
| Difficulty | Medium |
| Monetization | Hobby |
| #### Notes | |
| - HN users praised the “old‑fashioned aesthetic” as a cue that the information isn’t slop (rkagerer) and lamented that modern graphs are often flashy but less useful. | |
| - A drop‑in replacement for Matplotlib/Plotly themes would spark discussion about chart clarity vs. visual bells‑and‑whistles and could be adopted in projects like Munin, LibreNMS, or custom alerting scripts. |
RetroMetrics: Retro‑Style Self‑Hosted Metrics Dashboard
Summary
- A self‑hosted web dashboard that scrapes Prometheus, InfluxDB, or JSON endpoints and displays metrics using the classic rrdtool graph style.
- Gives teams a clear, distraction‑free view of system health without the visual overload of modern UI panels.
Details
| Key | Value |
|---|---|
| Target Audience | SREs, platform engineers, and small‑to‑mid size teams operating their own monitoring stack |
| Core Feature | Configurable dashboards with auto‑refreshing, rrdtool‑styled graphs, alert overlays, and simple layout |
| - Tech Stack | Go backend (for scraping) + React frontend with a custom CSS theme mimicking rrdtool; data stored in Redis or TSDB |
| Difficulty | High |
| Monetization | Revenue-ready: SaaS hosted tier ($15/mo per instance) + free self‑hosted open‑source core |
| #### Notes | |
| - Commenters noted that rrdtool is still widely used (Levitating) and that the “old‑fashioned aesthetic almost feels like a cue what I'm looking at won't be slop” (rkagerer); RetroMetrics would give them that cue in a modern, easily deployable package. | |
| - Could ignite HN debate about the trade‑offs between usability and aesthetics, and serve as a practical tool for those who miss the clarity of rrdtool‑based dashboards like Munin. |
RRDtool Bridge: Convert Modern Time‑Series Exports to RRD Files
Summary
- A CLI utility that ingests metric data from Prometheus queries, OpenTelemetry OTLP, or JSON logs and writes them into RRD files ready for rrdtool graphing.
- Enables users to keep using the beloved rrdtool graphing pipeline while feeding it data from contemporary monitoring systems.
Details
| Key | Value |
|---|---|
| Target Audience | Sysadmins and engineers who rely on rrdtool/graphing scripts but have migrated to Prometheus or similar backends |
| Core Feature | Parses metric samples, creates/updates RRD databases, and optionally generates rrdtool graph commands |
| Tech Stack | Rust (for performance) + librdmacm? Actually use rust-rrd library or bind to rrdtool via FFI; CLI with Clap |
| Difficulty | Medium |
| Monetization | Hobby |
| #### Notes | |
| - HN thread highlighted that rrdtool is “still used widely today by projects like Munin, LibreNMS and Collectd” (Levitating); a bridge would let those users modernize their data collection without abandoning their trusted graphing tool. | |
| - Practical utility: users could replace brittle scripts with a single binary, prompting discussion on integrating old and new observability stacks and potentially inspiring contributions to rrdtool ecosystem. |