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54 lines
1.8 KiB
Markdown
54 lines
1.8 KiB
Markdown
---
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title: How to use Rook Ceph for Persistent Storage in Kubernetes
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description: How to deploy Rook Ceph into your Kubernetes cluster for persistent storage
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---
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# Persistent storage in Kubernetes with Rook Ceph / CephFS
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[Ceph](https://docs.ceph.com/en/quincy/) is a highly-reliable, scalable network storage platform which uses individual disks across participating nodes to provide fault-tolerant storage.
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{ loading=lazy }
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[Rook](https://rook.io) provides an operator for Ceph, decomposing the [10-year-old](https://en.wikipedia.org/wiki/Ceph_(software)#Release_history), at-time-arcane, platform into cloud-native components, created declaratively, whose lifecycle is managed by an operator.
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## Rook Ceph requirements
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!!! summary "Ingredients"
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Already deployed:
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* [x] A [Kubernetes cluster](/kubernetes/cluster/)
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* [x] [Flux deployment process](/kubernetes/deployment/flux/) bootstrapped
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* [x] An [Ingress](/kubernetes/ingress/) to route incoming traffic to services
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New:
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* [ ] At least 3 nodes with dedicated disks available (*more is better*)
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## Preparation
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### Namespace
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We need a namespace to deploy our HelmRelease and associated ConfigMaps into. Per the [flux design](/kubernetes/deployment/flux/), I create this example yaml in my flux repo at `/bootstrap/namespaces/namespace-rook-system.yaml`:
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```yaml title="/bootstrap/namespaces/namespace-mastodon.yaml"
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apiVersion: v1
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kind: Namespace
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metadata:
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name: rook-system
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```
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### HelmRepository
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```yaml title="/bootstrap/helmrepositories/gitepository-rook-release.yaml"
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apiVersion: source.toolkit.fluxcd.io/v1beta1
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kind: HelmRepository
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metadata:
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name: rook-release
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namespace: flux-system
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spec:
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interval: 15m
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url: https://charts.rook.io/release
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```
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