Merge pull request #363 from sgibson91/per-user-storage-quota-blog

Per user storage quota blog

content/blog/2025/per-user-storage-quota/index.md

@@ -0,0 +1,46 @@
+---
+title: "Enforcing per-user storage quotas with `jupyterhub-home-nfs`"
+subtitle: ""
+summary: ""
+authors: ["Sarah Gibson"]
+tags: [open-source]
+categories: [impact]
+date: 2025-01-28T09:57:28+00:00
+lastmod: 2025-01-28T10:10:14+00:00
+featured: false
+draft: false
+
+# Featured image
+# To use, add an image named `featured.jpg/png` to your page's folder.
+# Focal points: Smart, Center, TopLeft, Top, TopRight, Left, Right, BottomLeft, Bottom, BottomRight.
+image:
+  caption: ""
+  focal_point: ""
+  preview_only: false
+
+# Projects (optional).
+#   Associate this post with one or more of your projects.
+#   Simply enter your project's folder or file name without extension.
+#   E.g. `projects = ["internal-project"]` references `content/project/deep-learning/index.md`.
+#   Otherwise, set `projects = []`.
+projects: ["nasa-veda"]
+---
+
+When sharing a storage disk between users, as is usually the case in a JupyterHub deployment, it is important to put in guardrails so that one user cannot eat up the whole storage capacity from the rest of the users.
+To this end, 2i2c in close collaboration with [Development Seed](https://developmentseed.org) have developed the [`jupyterhub-home-nfs` project](https://github.com/2i2c-org/jupyterhub-home-nfs) which is a Helm chart that permits enforcing per-user quotas on the storage space.
+
+{{% callout note %}}
+Note that this feature is currently available to AWS hosted hubs only and will be rolled out to other cloud providers in the future.
+{{% /callout %}}
+
+Under the hood, the Helm chart runs [NFS Ganesha](https://github.com/nfs-ganesha/nfs-ganesha) as an in-cluster NFS server, backed by [XFS](https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/7/html/storage_administration_guide/ch-xfs) as the underlying filesystem. Storage quota is enforced through XFS's native quota management utility `xfs_quota`.
+
+Since this feature moves our infrastructure away from managed filesystems (such as AWS's Elastic File System) that cannot support per-user storage quotas, we have also developed monitoring and alerting mechanisms that will let us know when the disks are getting full, and automated back-ups for disaster recovery.
+
+If you would like to try this on your 2i2c-managed hub, [please get in touch](https://docs.2i2c.org/support/).
+
+This project can also be used with _any_ Kubernetes-based JupyterHub, as per our [Right to Replicate policy](https://2i2c.org/right-to-replicate/), so please try it out on your own deployment and let us know what you think!
+
+## Credit
+
+This project was developed and deployed in collaboration with [Tarashish Mishra](https://developmentseed.org/team/tarashish-mishra/) from [Development Seed](https://developmentseed.org)