Prometheus Monitoring

Reminder: The CfP for #PromCon (October 21+22 in Munich) is open! Please submit your @prometheus.io talks :)

promcon.io/2025-munich/...

Join us for this Berlin Prometheus meetup on March 25!

The recording of our @prometheus.io talk is out!

youtu.be/o5HpeMtpsTg?...

A Prometheus server web UI with the Query page opened, showing a PromQL expression being visualized as a tree view, with visual annotations about available results and labels for each sub-expression node. One node is selected and being graphed.

A Prometheus server web UI with the Query page opened, showing a PromQL expression being visualized as a tree view, with visual annotations about available results and labels for each sub-expression node. A binary operator node is selected and an explanation for the matching behavior of the operator is being shown below the tree in an "Explain" tab.

The coolest new UI feature in the new @prometheus.io web UI is IMO the PromLens-style tree view that allows you to visualize your PromQL query structure and analyse the data for each sub-expression. You can even get visualizations of the matching behavior of binary vector operators and more!

And here's a blog post about the new web UI that I built for @prometheus.io 3.0 that I wrote a little while back for the first beta release:

promlabs.com/blog/2024/09...

Announcing Prometheus 3.0 | Prometheus An open-source monitoring system with a dimensional data model, flexible query language, efficient time series database and modern alerting approach.

Today on #KubeConNA we released @prometheus.io 3.0 ❤️

It was a long and amazing journey; thanks to all 68 contributors since 2.55 and near 1000 since 2.0! 💪

New UI, query explore, UTF-8, @opentelemetry.io compatibility, Remote Write 2.0, better perf and more!

Details: prometheus.io/blog/2024/11...

@prometheus.io 3.0 is out! 🎉🥳👏

Prometheus 2.46.0-rc.0 is out! Please test it and report any bugs you might find in our issue tracker.

https://github.com/prometheus/prometheus/releases/tag/v2.46.0-rc.0

Prometheys 2.45 is out!

This is a Long Term Support release - we will provide bugfixes and security fixes until July 2024 on this release!

https://groups.google.com/g/prometheus-announce/c/S1oVgGrng4Q

In this video, I cover seven little-known features, behaviors, and implementation details in the Prometheus monitoring system that I find mildly interesting.... 7 Things You Didn't Know About Prometheus | Little-Known Features and Implementation Details

New @prometheusio.bsky.social video! This time about 7 little-known behaviors and implementation details. Some useful, some (AT LEAST) mildly interesting 😅

How many of these do you know? 🤔

https://www.youtube.com/watch?v=3-XwyId5Fog

Look at this awesome video from @juliusv.com

PromQL Data Selection Explained | Selectors, Lookback Delta, Offsets, and Absolute "@" Timestamps

https://www.youtube.com/watch?v=xIAEEQwUBXQ

Prometheus is back to GSOC this year with Arthus Sens as mentee:
https://summerofcode.withgoogle.com/programs/2023/projects/pmQsJm1C

I finally got back to making a big new @prometheusio.bsky.social video with tons of explainer animations:

All about PromQL data selection!

* Instant/range vector selectors
* Label matchers
* Lookback delta
* Staleness handling
* Offsets
* "@" timestamps

https://www.youtube.com/watch?v=xIAEEQwUBXQ

A frame from an animation video explaining the data selection behavior for instant vector selectors with an offset in PromQL.

Working on some PromQL data selection explainer animations for a new @prometheusio.bsky.social video:

https://juliusv.com/instant-vector-selector-offset.mp4

(looking forward to video support on Bluesky! ;))

Plenty of Prometheus releases these days: LTS 2.37.8, 2.43.1, 2.43.1-stringlabels, 2.44.0-rc.1. noticably 2.43.1 fixes a bug triggering with some relabeling rules, upgrade recommended if you are on 2.43. https://github.com/prometheus/prometheus/releases/tag/v2.43.1

This is a placeholder for now; we need to figure out what to do with this account and if we can automate it across Mastodon.

Questions? -> @richih.bsky.social

Hi from https://prometheus.io/ :)