mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-29 00:10:23 +00:00
117 lines
3.4 KiB
Markdown
117 lines
3.4 KiB
Markdown
# How to test RBD and CephFS plugins with Kubernetes 1.13
|
|
|
|
Both `rbd` and `cephfs` directories contain `plugin-deploy.sh` and
|
|
`plugin-teardown.sh` helper scripts. You can use those to help you
|
|
deploy/teardown RBACs, sidecar containers and the plugin in one go.
|
|
By default, they look for the YAML manifests in
|
|
`../../deploy/{rbd,cephfs}/kubernetes`.
|
|
You can override this path by running `$ ./plugin-deploy.sh /path/to/my/manifests`.
|
|
|
|
Once the plugin is successfully deployed, you'll need to customize
|
|
`storageclass.yaml` and `secret.yaml` manifests to reflect your Ceph cluster
|
|
setup.
|
|
Please consult the documentation for info about available parameters.
|
|
|
|
After configuring the secrets, monitors, etc. you can deploy a
|
|
testing Pod mounting a RBD image / CephFS volume:
|
|
|
|
```bash
|
|
kubectl create -f secret.yaml
|
|
kubectl create -f storageclass.yaml
|
|
kubectl create -f pvc.yaml
|
|
kubectl create -f pod.yaml
|
|
```
|
|
|
|
Other helper scripts:
|
|
|
|
* `logs.sh` output of the plugin
|
|
* `exec-bash.sh` logs into the plugin's container and runs bash
|
|
|
|
## How to test RBD Snapshot feature
|
|
|
|
Before continuing, make sure you enabled the required
|
|
feature gate `VolumeSnapshotDataSource=true` in your Kubernetes cluster.
|
|
|
|
In the `examples/rbd` directory you will find two files related to snapshots:
|
|
[snapshotclass.yaml](./rbd/snapshotclass.yaml) and
|
|
[snapshot.yaml](./rbd/snapshot.yaml).
|
|
|
|
Once you created your RBD volume, you'll need to customize at least
|
|
`snapshotclass.yaml` and make sure the `monitors` and `pool` parameters match
|
|
your Ceph cluster setup.
|
|
If you followed the documentation to create the rbdplugin, you shouldn't
|
|
have to edit any other file.
|
|
|
|
After configuring everything you needed, deploy the snapshot class:
|
|
|
|
```bash
|
|
kubectl create -f snapshotclass.yaml
|
|
```
|
|
|
|
Verify that the snapshot class was created:
|
|
|
|
```console
|
|
$ kubectl get volumesnapshotclass
|
|
NAME AGE
|
|
csi-rbdplugin-snapclass 4s
|
|
```
|
|
|
|
Create a snapshot from the existing PVC:
|
|
|
|
```bash
|
|
kubectl create -f snapshot.yaml
|
|
```
|
|
|
|
To verify if your volume snapshot has successfully been created, run the following:
|
|
|
|
```console
|
|
$ kubectl get volumesnapshot
|
|
NAME AGE
|
|
rbd-pvc-snapshot 6s
|
|
```
|
|
|
|
To check the status of the snapshot, run the following:
|
|
|
|
```bash
|
|
$ kubectl describe volumesnapshot rbd-pvc-snapshot
|
|
|
|
Name: rbd-pvc-snapshot
|
|
Namespace: default
|
|
Labels: <none>
|
|
Annotations: <none>
|
|
API Version: snapshot.storage.k8s.io/v1alpha1
|
|
Kind: VolumeSnapshot
|
|
Metadata:
|
|
Creation Timestamp: 2019-02-06T08:52:34Z
|
|
Finalizers:
|
|
snapshot.storage.kubernetes.io/volumesnapshot-protection
|
|
Generation: 5
|
|
Resource Version: 84239
|
|
Self Link: /apis/snapshot.storage.k8s.io/v1alpha1/namespaces/default/volumesnapshots/rbd-pvc-snapshot
|
|
UID: 8b9b5740-29ec-11e9-8e0f-b8ca3aad030b
|
|
Spec:
|
|
Snapshot Class Name: csi-rbdplugin-snapclass
|
|
Snapshot Content Name: snapcontent-8b9b5740-29ec-11e9-8e0f-b8ca3aad030b
|
|
Source:
|
|
API Group: <nil>
|
|
Kind: PersistentVolumeClaim
|
|
Name: rbd-pvc
|
|
Status:
|
|
Creation Time: 2019-02-06T08:52:34Z
|
|
Ready To Use: true
|
|
Restore Size: 1Gi
|
|
Events: <none>
|
|
```
|
|
|
|
To be sure everything is OK you can run `rbd snap ls [your-pvc-name]` inside
|
|
one of your Ceph pod.
|
|
|
|
To restore the snapshot to a new PVC, deploy
|
|
[pvc-restore.yaml](./rbd/pvc-restore.yaml) and a testing pod
|
|
[pod-restore.yaml](./rbd/pvc-restore.yaml):
|
|
|
|
```bash
|
|
kubectl create -f pvc-restore.yaml
|
|
kubectl create -f pod-restore.yaml
|
|
```
|