# Ceph-Rock / Rook-Ceph

Distributed storage на базе Ceph, управляемый Rook-оператором. Предоставляет:
- **Block storage** (RWO) — `rook-ceph-block` StorageClass
- **Filesystem storage** (RWX) — `rook-ceph-filesystem` StorageClass

Требует минимум **3 ноды** с незанятыми дисками для OSD.

## Быстрый старт

```yaml
# group_vars/all/addons.yml
addon_ceph_rock: true
```

```bash
make addon-ceph-rock
```

## Параметры

| Переменная | Умолч. | Описание |
|---|---|---|
| `rook_ceph_mon_count` | `3` | Количество MON |
| `rook_ceph_block_replica_count` | `3` | Реплики блочного хранилища |
| `rook_ceph_devices` | `[]` | Список raw-устройств для OSD |
| `rook_ceph_use_all_devices` | `false` | Авто-использовать все свободные диски |
| `rook_ceph_block_storage_class` | `rook-ceph-block` | Имя StorageClass (RWO) |
| `rook_ceph_filesystem_storage_class` | `rook-ceph-filesystem` | Имя StorageClass (RWX) |

## Single-node конфигурация

```yaml
rook_ceph_mon_count: 1
rook_ceph_allow_multiple_mon_per_node: true
rook_ceph_block_replica_count: 1
```

## Использование конкретных дисков

```yaml
rook_ceph_devices:
  - "/dev/sdb"
  - "/dev/sdc"
```

## Использование в PVC

### Block storage (RWO)

```yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: my-db-data
spec:
  accessModes: [ReadWriteOnce]
  storageClassName: rook-ceph-block
  resources:
    requests:
      storage: 20Gi
```

### Filesystem storage (RWX)

```yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: shared-data
spec:
  accessModes: [ReadWriteMany]
  storageClassName: rook-ceph-filesystem
  resources:
    requests:
      storage: 50Gi
```

## Dashboard

Включён по умолчанию. Доступ:

```bash
kubectl -n rook-ceph port-forward svc/rook-ceph-mgr-dashboard 7000
# http://localhost:7000
# Логин: admin
kubectl -n rook-ceph get secret rook-ceph-dashboard-password \
  -o jsonpath='{.data.password}' | base64 -d
```

Или через Ingress:
```yaml
rook_ceph_dashboard_ingress_enabled: true
rook_ceph_dashboard_ingress_host: "ceph.example.com"
```

## Диагностика

```bash
kubectl -n rook-ceph get cephcluster
kubectl -n rook-ceph get pods
kubectl exec -n rook-ceph deployment/rook-ceph-tools -- ceph status
kubectl exec -n rook-ceph deployment/rook-ceph-tools -- ceph osd status
```
## Официальные ресурсы

- Официальный сайт: [https://rook.io/](https://rook.io/)
- Официальная документация: [https://rook.io/docs/rook/latest-release/Storage-Configuration/Ceph-CSI/ceph-csi-drivers/](https://rook.io/docs/rook/latest-release/Storage-Configuration/Ceph-CSI/ceph-csi-drivers/)
- Версии Helm chart / ПО: [https://artifacthub.io/packages/helm/rook-release/rook-ceph](https://artifacthub.io/packages/helm/rook-release/rook-ceph)