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doc: Add Upgrade documentation for snapshot

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Added step to identify alpha snapshot CRD.
Added step to delete alpha CRD and link
for installing beta CRD.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This commit is contained in:
Madhu Rajanna 2020-04-16 12:08:51 +05:30 committed by mergify[bot]
parent a116764f4d
commit 1a3b07994e
1 changed files with 36 additions and 0 deletions
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docs/ceph-csi-upgrade.md
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@ -16,6 +16,7 @@
- [3. Upgrade RBD Provisioner resources](#3-upgrade-rbd-provisioner-resources) - [3. Upgrade RBD Provisioner resources](#3-upgrade-rbd-provisioner-resources)
- [3.1 Update the RBD Provisioner RBAC](#31-update-the-rbd-provisioner-rbac) - [3.1 Update the RBD Provisioner RBAC](#31-update-the-rbd-provisioner-rbac)
- [3.2 Update the RBD Provisioner deployment](#32-update-the-rbd-provisioner-deployment) - [3.2 Update the RBD Provisioner deployment](#32-update-the-rbd-provisioner-deployment)
- [3.3 Update snapshot CRD from Alpha to Beta](#33-update-snapshot-crd-from-alpha-to-beta)
- [4. Upgrade RBD Nodeplugin resources](#4-upgrade-rbd-nodeplugin-resources) - [4. Upgrade RBD Nodeplugin resources](#4-upgrade-rbd-nodeplugin-resources)
- [4.1 Update the RBD Nodeplugin RBAC](#41-update-the-rbd-nodeplugin-rbac) - [4.1 Update the RBD Nodeplugin RBAC](#41-update-the-rbd-nodeplugin-rbac)
- [4.2 Update the RBD Nodeplugin daemonset](#42-update-the-rbd-nodeplugin-daemonset) - [4.2 Update the RBD Nodeplugin daemonset](#42-update-the-rbd-nodeplugin-daemonset)
@ -236,6 +237,41 @@ csi-rbdplugin-provisioner 3/3 3 3 139m
deployment UP-TO-DATE value must be same as READY deployment UP-TO-DATE value must be same as READY
##### 3.3 Update snapshot CRD from Alpha to Beta
As we are updating the snapshot resources from `Alpha` to `Beta` we need to
delete the old `alphav1` snapshot CRD created by external-snapshotter sidecar container
Check if we have any `v1alpha1` CRD created in our kubernetes cluster
```bash
[$]kubectl get crd volumesnapshotclasses.snapshot.storage.k8s.io -o yaml |grep v1alpha1
- name: v1alpha1
- v1alpha1
[$]kubectl get crd volumesnapshotcontents.snapshot.storage.k8s.io -o yaml |grep v1alpha1
- name: v1alpha1
- v1alpha1
[$]kubectl get crd volumesnapshots.snapshot.storage.k8s.io -o yaml |grep v1alpha1
- name: v1alpha1
- v1alpha1
```
As we have `v1alpha1` CRD created in our kubernetes cluster,we need to delete
the Alpha CRD
```bash
[$]kubectl delete crd volumesnapshotclasses.snapshot.storage.k8s.io
customresourcedefinition.apiextensions.k8s.io "volumesnapshotclasses.snapshot.storage.k8s.io" deleted
[$]kubectl delete crd volumesnapshotcontents.snapshot.storage.k8s.io
customresourcedefinition.apiextensions.k8s.io "volumesnapshotcontents.snapshot.storage.k8s.io" deleted
[$]kubectl delete crd volumesnapshots.snapshot.storage.k8s.io
customresourcedefinition.apiextensions.k8s.io "volumesnapshots.snapshot.storage.k8s.io" deleted
```
**Note**: Its kubernetes distributor responsibility to install new snapshot
controller and snapshot beta CRD. more info can be found
[here](https://github.com/kubernetes-csi/external-snapshotter/tree/master#usage)
#### 4. Upgrade RBD Nodeplugin resources #### 4. Upgrade RBD Nodeplugin resources
Upgrading nodeplugin resources include updating the nodeplugin RBAC and Upgrading nodeplugin resources include updating the nodeplugin RBAC and