btrfs-provisioner for Kubernetes

This is a (work in progress) volume provisioner for Kubernetes leveraging the BTRFS filesystem to create volumes, enforce storage quotas, create snapshots and make backups.

What works…

• Volume provisioning
• Volume deletion
• Enforcing storage quotas
• Static (per Node) StorageClasses

…and what doesn't (yet)

• Volume snapshots
• Volume backups using Borg Backup
• Dynamic (single) StorageClass (automatic node selection and assignment)
• Automatically moving volumes between nodes

Getting started

Prerequisites

• A running K8s cluster
• A BTRFS directory or filesystem at /volumes.

Installation

First of all, this is experimental software. You're up on your own should you lose data.

Helm

helm repo add btrfs-provisioner https://timoschwarzer.github.io/btrfs-provisioner

Manual

Deploy the manifests in the deploy directory:

kubectl apply -f deploy/meta.yaml
kubectl apply -f deploy/controller.yaml

The BTRFS provisioner controller creates a StorageClass for each worker node on startup.