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