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the PlanetScale at home

homescale 최신버젼 다운로드

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# Homescale

Homescale is an experiment in building PlanetScale at home. It creates writable database instances and point-in-time branches from immutable snapshots without copying the full database. Kubernetes provides the control plane, while Rook operates Ceph and Ceph RBD provides block storage, snapshots, and copy-on-write clones.

## Prerequisites

- At least 20 GiB free host storage
- [mise](https://mise.jdx.dev/)

## How to run

Install the tools, then use the task commands:

```bash
mise install
task up
task test
task down
task cleanup
```

- `up` creates or starts the VM, installs K3s, snapshots, Rook, and Ceph, then exits when Ceph reports `HEALTH_OK`.
- `test` verifies point-in-time snapshot restore and copy-on-write isolation.
- `down` gracefully stops the VM while preserving its root and OSD disks.
- `cleanup` deletes the VM, OSD disk, and all local Homescale data.

## Infrastructure

The local infra runs on a single-node K3s cluster in a Lima VM. Rook operates a single-node Ceph cluster whose only OSD consumes a dedicated Lima raw disk. Applications receive RBD-backed PVCs through the `homescale-rbd` `StorageClass` and clone them through the matching `VolumeSnapshotClass`.

Provisioned Ceph has one monitor, one manager, one OSD, and one copy of every object. There is no redundancy or backup.

## Stack

| Component | Version |
| --- | --- |
| Lima | 2.1.4 |
| K3s / Kubernetes | 1.36.2 |
| Rook | 1.20.2 |
| Ceph | 20.2.2 (Tentacle) |
| Ceph CSI operator and drivers | 1.0.4 |
| CSI snapshot controller | 8.5.0 |

## Troubleshooting

```bash
mise exec -- limactl shell homescale sudo journalctl -u k3s
KUBECONFIG="$PWD/.state/kubeconfig" mise exec -- kubectl get pods -n rook-ceph
KUBECONFIG="$PWD/.state/kubeconfig" mise exec -- kubectl \
  -n rook-ceph exec deployment/rook-ceph-tools -- ceph status
```

homescale

homescale 최신버젼 다운로드

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