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2i2c @2i2c.org · 06/05/2026

We're sharing this writeup because we think transparency about security work matters. If you run JupyterHub on Kubernetes, this might save you some investigation time. 👉 2i2c.org/blog/copyfai...

2i2c.org

Protecting our hubs against the CopyFail kernel exploit | 2i2c

The recently disclosed CopyFail Linux kernel zero-day (CVE-2026-31431) opens up a way for code running inside a container to break out onto the underlying node. We took a close look at our hubs to…

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2i2c @2i2c.org · 06/05/2026

It turns out JupyterHub hardening back in 2021 (for a totally different security issue) had already significantly reduced our exposure (and anybody else running z2jh.jupyter.org). A great example of how defensive work and open source can pay dividends years later!

z2jh.jupyter.org

Zero to JupyterHub with Kubernetes

JupyterHub allows users to interact with a computing environment through a webpage. As most devices have access to a web browser, JupyterHub makes it is easy to provide and standardize the computin...

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2i2c @2i2c.org · 06/05/2026

We tested the public Kubernetes proof-of-concept on a staging hub running on AWS / EKS. The exploit was unable to break out of our container. This was a good indicator, and we spent a bit of time investigating why.

z2jh.jupyter.org

Zero to JupyterHub with Kubernetes

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2i2c @2i2c.org · 06/05/2026

A new Linux kernel zero-day called CopyFail lets code break out of containers onto the host. We took a close look at our community hubs, confirmed they're likely safe, and added another layer of protection just in case. Here's a post about what we learned 👉 2i2c.org/blog/copyfai...

2i2c.org

Protecting our hubs against the CopyFail kernel exploit | 2i2c

The recently disclosed CopyFail Linux kernel zero-day (CVE-2026-31431) opens up a way for code running inside a container to break out onto the underlying node. We took a close look at our hubs to…

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2i2c @2i2c.org · 29/04/2026

As part of this work we contributed the SharedPasswordAuthenticator upstream to the JupyterHub project, check out the docs here, and thanks to MinRK for the reviews! jupyterhub.readthedocs.io/en/latest/re...

jupyterhub.readthedocs.io

Authenticators

The Authenticator is the mechanism for authorizing users to use the Hub and single user notebook servers. The default PAM Authenticator: JupyterHub ships with the default PAM-based Authenticator, f...

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2i2c @2i2c.org · 29/04/2026

Hub admins can now set two passwords instead of one: a participant password and an admin password. Attendees still get a simple shared login, while organizers regain group management, the admin dashboard, and shared directory access.

jupyterhub.readthedocs.io

Authenticators

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2i2c @2i2c.org · 27/04/2026

If you encounter a bug in popular open source software, you can often "just wait" for a fix. But someone, somewhere, has to put in the effort to make it happen. 2i2c is committed to being one of those someones! 👉 2i2c.org/blog/why-upg...

2i2c.org

How regularly upgrading core infrastructure leads to upstream improvements and better infrastructure | 2i2c

Our collaborators at NASA VEDA recently asked us about the rationale behind policies for upgrading our infrastructure relatively quickly when new versions come out. Here’s the explanation that we…

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2i2c @2i2c.org · 27/04/2026

Of course, upgrading can break things. We've had communities hit issues in the past, and it's important to move carefully. But staying current means when security fixes drop, rollout is fast because the hard work is already done.

2i2c.org

How regularly upgrading core infrastructure leads to upstream improvements and better infrastructure | 2i2c

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2i2c @2i2c.org · 27/04/2026

For example: our move toward Helm 4 has driven merged PRs in JupyterHub, validated fixes still in review, and surfaced a bug being worked on in Helm itself. This only happens when users try things out and open issues and patches.

2i2c.org

How regularly upgrading core infrastructure leads to upstream improvements and better infrastructure | 2i2c

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2i2c @2i2c.org · 23/04/2026

Here's a little post from Chris about work we did helping Jupyter Book deploy jupyterbook.org from a collection of github repositories with MyST: blog.jupyter.org/how-we-combi...

jupyterbook.org

Community Guide

This may be due to an incorrect BASE_URL configuration. See the MyST Documentation for reference.

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2i2c @2i2c.org · 09/04/2026

We're proud to support the Berkeley Institute for Data Science in joining the mybinder.org federation! This strengthens the resilience of mybinder.org and shares the load across another contributing institution! blog.jupyter.org/berkeley-ins...

mybinder.org

The Binder Project

Reproducible, sharable, open, interactive computing environments.

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2i2c @2i2c.org · 06/04/2026

For a deeper technical dive, check out a blog post we wrote for the Jupyter Book blog here: jupyterbook.org/blog/posts/2...

jupyterbook.org

How we combine multiple repositories into one website at jupyterbook.org - Jupyter Book: Blog

Updates from the Jupyter Book subproject.

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2i2c @2i2c.org · 06/04/2026

We spent a bit of time updating Jupyter Book's landing page documentation, and making it more useful for communities with multiple content repositories under one domain. Here's a little post about it: 2i2c.org/blog/jupyter...

jupyterbook.org

How we combine multiple repositories into one website at jupyterbook.org - Jupyter Book: Blog

Updates from the Jupyter Book subproject.

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2i2c @2i2c.org · 09/03/2026

The Jupyter Book and Jupyter Hub teams are hiring a community manager! This is a one-year contract to help us pioneer this critical role by improving and growing our community. Read more here, and please share and apply! blog.jupyter.org/call-for-app...

blog.jupyter.org

Call for applications: Community Manager for JupyterHub and Jupyter Book

The JupyterHub and Jupyter Book communities are hiring a community manager.

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Reposted by 2i2c

Jenny Wong (she/her) @jnywong.github.io · 11/02/2026

I've always admired Project Jupyter from afar and to join as a JupyterHub maintainer is definitely a LIFE GOALS achievement for me. The difference between then and now is that I better understand the power and impact of the open source community and *people*

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2i2c @2i2c.org · 12/02/2026

This is part of our open practices: doing our work in the open, inviting feedback, and making it easier for communities to see and influence priorities. 2i2c.org/open-practices

2i2c.org

2i2c

How we build trust through openness

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2i2c @2i2c.org · 12/02/2026

We also want to use this to experiment with fractional co-funding, so multiple member communities can share the cost of impactful work. You can learn more about how our membership model works here: 2i2c.org/membership

2i2c.org

Membership | 2i2c

A non-profit that designs community hubs for data-driven discovery, helps communities use these hubs to maximize impact, and facilitates the spread of ideas between communities in our network.

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2i2c @2i2c.org · 12/02/2026

Our roadmap is how we deliver the most value to our member communities - roadmap initiatives focus upstream contributions in open source to enhance infrastructure for research and education. Our roadmap is here 👉 2i2c.org/roadmap Comment on our initiatives here 👉 github.com/2i2c-org/ini...

2i2c.org

2i2c Platform Roadmap - 2i2c Platform Roadmap

Development priorities and initiatives for 2i2c's platform

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2i2c @2i2c.org · 12/02/2026

We’re proud to share a public roadmap for 2i2c's team - it's a step toward more participatory, transparent open development with our member and upstream communities. 👉 2i2c.org/blog/public-...

2i2c.org

2i2c Platform Roadmap - 2i2c Platform Roadmap

Development priorities and initiatives for 2i2c's platform

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2i2c @2i2c.org · 10/02/2026

Huge congrats, Jenny. And thank you to the JupyterHub community for building an open, welcoming culture that creates real pathways for contributors to grow into leadership. You can learn more about JupyterHub's team here: compass.hub.jupyter.org

compass.hub.jupyter.org

Team Compass for JupyterHub and Binder — Team Compass documentation

Our Team Compass contains team practices, policies, and resources to help one another align and contribute. It also has helpful information for team members, like shared infrastructure and accounts,…

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2i2c @2i2c.org · 10/02/2026

This kind of recognition comes from showing up with consistent, trusted work over time. Jenny’s contributions span nbgitpuller and grafana-dashboards, plus active participation in project meetings and community planning.

compass.hub.jupyter.org

Team Compass for JupyterHub and Binder — Team Compass documentation

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2i2c @2i2c.org · 10/02/2026

We’re incredibly proud to announce that Jenny Wong was invited to join the JupyterHub team as a contributor and maintainer! 2i2c.org/blog/jenny-j...

2i2c.org

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2i2c @2i2c.org · 06/02/2026

In short: Jupyter Book 2 (now built on the MyST Document Engine) gives communities a better path to publish and maintain computational narratives without locking content into one format or workflow.

proceedings.scipy.org

Jupyter Book 2 and the MyST Document Stack - SciPy Proceedings

Jupyter Book allows researchers and educators to create books and knowledge bases that are reusable, reproducible, and interactive. This new foundation introduces a scalable way to publish…

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2i2c @2i2c.org · 06/02/2026

Angus just gave a FOSDEM 2026 talk on Introducing Jupyter Book 2 and why this stack matters for reusable, reproducible computational publishing. 2i2c.org/blog/fosdem-...

2i2c.org

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2i2c @2i2c.org · 05/02/2026

Thanks to Eric, Sean, and Balaji at UC Berkeley for sharing the data and feedback that drove these changes, and BIDS for facilitating collaborations like these. The pre-release (v1.3.0b1) is available now. Feedback welcome via GitHub issues. 2i2c.org/blog/nbgitpu...

2i2c.org

Better sharing UX with nbgitpuller and contextual error handling | 2i2c

TL;DR # nbgitpuller now has improved UX context-aware error handling. Try out the pre-release version 1.3.0b1 and let us know what you think by opening an issue or via the feedback form below 🚀

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2i2c @2i2c.org · 05/02/2026

Instead of showing every user the same raw git output, nbgitpuller now detects the error type and displays a targeted, human-readable message with specific steps to resolve it. The terminal log is still available - just tucked behind a toggle.

2i2c.org

Better sharing UX with nbgitpuller and contextual error handling | 2i2c

TL;DR # nbgitpuller now has improved UX context-aware error handling. Try out the pre-release version 1.3.0b1 and let us know what you think by opening an issue or via the feedback form below 🚀

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2i2c @2i2c.org · 05/02/2026

The Berkeley DataHub team shared over 2,000 error logs with us! This real-world data revealed the most common failure patterns: merge conflicts (45%), fetch errors (23%), and URL mistakes by instructors (22%). Each category needed a different solution.

2i2c.org

Better sharing UX with nbgitpuller and contextual error handling | 2i2c

TL;DR # nbgitpuller now has improved UX context-aware error handling. Try out the pre-release version 1.3.0b1 and let us know what you think by opening an issue or via the feedback form below 🚀

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2i2c @2i2c.org · 05/02/2026

UC Berkeley's DataHub team shared error log data that helped us redesign error handling in nbgitpuller - a tool used across education and research to distribute Jupyter content via a single link. 2i2c.org/blog/nbgitpu...

2i2c.org

Better sharing UX with nbgitpuller and contextual error handling | 2i2c

TL;DR # nbgitpuller now has improved UX context-aware error handling. Try out the pre-release version 1.3.0b1 and let us know what you think by opening an issue or via the feedback form below 🚀

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2i2c @2i2c.org · 28/01/2026

If you're thinking about running workshops that need pre-configured environments, this setup might be useful. Tips on using STRUDEL with AI assistants here: github.com/strudel-scie...

github.com

strudel-kit/docs/docs/usage-with-ai.md at main · strudel-science/strudel-kit

Frontend React templates for implementing scientific UIs with the STRUDEL design system. - strudel-science/strudel-kit

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2i2c @2i2c.org · 28/01/2026

What we found interesting: this shows how JupyterHub can support more than just notebooks. The same patterns we use for Jupyter environments work for modern web development tools and AI assistants too.

github.com

strudel-kit/docs/docs/usage-with-ai.md at main · strudel-science/strudel-kit

Frontend React templates for implementing scientific UIs with the STRUDEL design system. - strudel-science/strudel-kit

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2i2c @2i2c.org · 28/01/2026

People built prototypes for real work in astrophysics, genomics, energy, water quality, and light sources. The hub gave them space to experiment without worrying about infrastructure. strudel.science/engage/news/...

strudel.science

Workshop at LBNL to build scientific UIs with STRUDEL and AI assistants | STRUDEL

STRUDEL

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2i2c @2i2c.org · 28/01/2026

We pre-configured Cline with OpenRouter, which let the workshop team manage AI costs centrally with a shared API key. Participants got access to premium models without needing their own accounts or API setup.

strudel.science

Workshop at LBNL to build scientific UIs with STRUDEL and AI assistants | STRUDEL

STRUDEL

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2i2c @2i2c.org · 28/01/2026

Our goal was to provide an AI-assistant environment with zero friction. We configured a JupyterHub with VS Code for the Web and Cline (an AI coding assistant) so participants could start building with AI help immediately instead of spending hours on environment setup.

strudel.science

Workshop at LBNL to build scientific UIs with STRUDEL and AI assistants | STRUDEL

STRUDEL

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2i2c @2i2c.org · 28/01/2026

We helped STRUDEL run a workshop where 30+ researchers prototyped building scientific web applications in a single day. Everyone left with a working prototype, even folks who'd never built a web app before! 2i2c.org/blog/strudel...

2i2c.org

STRUDEL enables rapid scientific GUI prototyping in partnership with 2i2c | 2i2c

What happened # The STRUDEL team hosted an all-day workshop with over thirty participants prototyping web applications using the STRUDEL Design System and AI assistants in a custom hub environment…

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2i2c @2i2c.org · 26/01/2026

If you’re curious what the group does (and how it reports out), the charter is a great place to start: jupyter.org/governance/c... Thanks to Project Jupyter for the leadership and time that goes into community building, and for bringing more people into this work.

jupyter.org

Redirecting...

This page has moved. Redirecting to https://jupyter.org/governance/communitybuildingworkinggroup/

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2i2c @2i2c.org · 26/01/2026

This kind of thing is a key part of the foundational impact 2i2c wants to have for open source communities: not just technical and infrastructure work, but also bringing expertise and support in community and governance. We're proud April was willing to step into this role!

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2i2c @2i2c.org · 26/01/2026

Community work is infrastructure work. It’s how open source projects stay healthy, resilient, and welcoming over the long term. We're proud to share that our April (our People Lead) has joined the Jupyter Community Building Working Group! 2i2c.org/blog/april-j...

2i2c.org

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2i2c @2i2c.org · 22/01/2026

This is part of how we think about agency vs safety on a shared open platform, give partners control in a way that's safe for other member organizations. As a result, CloudBank can run routine Terraform changes, and they validated it by deploying a hub without 2i2c in the loop.

github.com

Allow Sean Morris to allocate new disks for CloudBank · Issue #6795 · 2i2c-org/infrastructure

Presently, for new Hubs on CloudBank, Sean has to ping us to allocate raw block storage for the home directory volume. It would be nice to prevent these synchronous requests from blocking him. What...

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2i2c @2i2c.org · 22/01/2026

The core fix was to move CloudBank’s Terraform state into CloudBank’s own GCP project, so access is scoped to their cluster and can’t spill over to other communities. It allows them make their own changes while still using our multi-community platform.

github.com

Allow Sean Morris to allocate new disks for CloudBank · Issue #6795 · 2i2c-org/infrastructure

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