The slides explain about the workflow for running OpenEBS on GPDs and making use of the GPD snapshot and clone features for recovering data.

1. Solution Walk-through
Sept 28 - OpenEBS Weekly Contributors Meet
Jiva Volumes on GPD

2. ● Overview
● Setup K8s with GPD Disks
● Volume Provisioning
○ GPD Storage Pool
○ StorageClass
○ Application
● GPD Snapshot and Clone
● Data Recovery
○ Mounting Clone Volumes
○ Recovery Volume and Application
Agenda

3. Overview
● OpenEBS Storage Pool can run
on any disks - both local as well
as remote.
● Why OpenEBS on GPD:
○ Apps can be short lived - no
need - Manage the
creation/deletion within the
K8s cluster. (Avoid -
mount/unmount)
○ Protect against Application or
K8s Failures
v1 v1 v1
a2 a3a1
Storage Pool Storage Pool Storage Pool
GPD1 GPD2 GPD3
v2 v3 v2 v3 v2 v3

4. Setup
Attach GPD disks to each of the
Storage Node within K8s cluster
Format and mount the GPD
sudo mkfs.ext4 /dev/sdb
sudo mkdir /mnt/openebs_gpd
sudo mount /dev/sdb /mnt/openebs_gpd
https://docs.openebs.io/docs/next/setupstoragepools.html

5. apiVersion: openebs.io/v1alpha1
kind: StoragePool
metadata:
name: jiva-gpd-pool
type: hostdir
spec:
path: "/mnt/openebs_gpd"
OpenEBS Configuration - StoragePool
https://github.com/kmova/bootstrap/blob/master/gke-openebs/jiva-gpd/jiva-gpd-sp.yaml

6. apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: openebs-jiva-gpd
annotations:
openebs.io/cas-type: jiva
cas.openebs.io/config: |
- name: "StoragePool"
value: "jiva-gpd-pool"
provisioner: openebs.io/provisioner-iscsi
OpenEBS Configuration - StorageClass
https://github.com/kmova/bootstrap/blob/master/gke-openebs/jiva-gpd/jiva-sc-gpd-pool.yaml

7. kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: demo-vol1-claim
spec:
storageClassName: openebs-jiva-gpd
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 5G
OpenEBS Configuration - PVC
https://github.com/kmova/bootstrap/blob/master/gke-openebs/jiva-gpd/busybox.yaml

8. GPD - Snapshot

9. GPD - Clone

10. GPD - Clone Attach
Attach Cloned GPD disks to the
Storage Node
Format and mount the GPD
sudo mkdir /mnt/openebs_gpd_snap
sudo mount /dev/sdb /mnt/openebs_gpd_snap

11. apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: openebs-jiva-gpd-ns
annotations:
openebs.io/cas-type: jiva
cas.openebs.io/config: |
- name: StoragePool
value: "jiva-gpd-pool"
- name: ReplicaCount
value: "1"
- name: ReplicaNodeSelector
value: |-
kubernetes.io/hostname: gke-kmova-helm-default-pool-bb33fbc7-tj3t
provisioner: openebs.io/provisioner-iscsi
Recovery Storage Class
https://github.com/kmova/bootstrap/blob/master/gke-openebs/jiva-gpd/jiva-sc-gpd-pool-ns.yaml

12. kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: demo-vol1-recover-claim
spec:
storageClassName: openebs-jiva-gpd-ns
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 5G
Recovery PVC
https://github.com/kmova/bootstrap/blob/master/gke-openebs/jiva-gpd/jiva-sc-gpd-pool-ns.yaml

13. Step 1 : SSH into node and copy the backup data into Recovery Replica
cd /mnt/openebs_gpd/default-demo-vol1-recover-claim-1811457354/
sudo rm -rf *
sudo cp /mnt/openebs_gpd_snap/default-demo-vol1-claim-2643725570/* .
# Edit peer.details to Replica = 1
Step 2: Restart the Replica and Controller Pods
Step 3: Launch Recovery Application using the above Recovery Volume.
Recovery Steps
https://github.com/kmova/bootstrap/tree/master/gke-openebs/jiva-gpd

14. Thank you!