Hey there! Wondering if I could get some help with a k8s, PVCs, and volume backup restoration.
Context Got an app in Cluster A with Postgres, which keeps data in a volume created via a PVC resource, and we’re migrating to a new Cluster B.
Versions Cluster A - Kubernetes 1.18.14-do.0 Cluster B - Kubernetes 1.20.2-do.0
What I want to do Use the PVC data from Cluster A and attach it to the app in Cluster B.
What I tried
Created a backup snapshot of the volume from Cluster A and attempted to create a new PVC in Cluster B from it following the tutorial in https://www.digitalocean.com/docs/kubernetes/how-to/snapshot-volumes/
:
Cluster B - pvc.yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: pg-data
namespace: pipeline
labels:
environment: prod
spec:
dataSource:
name: pg-data-backup
kind: VolumeSnapshot
apiGroup: snapshot.storage.k8s.io
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi # same size as that of the PVC from Cluster A
What I am seeing The new PVC in Cluster B is stuck in Pending status, as shown below.
kubectl get persistentvolumeclaims -n pipeline
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
pg-data Pending do-block-storage 39m
Am I doing something wrong? Any ideas or guidance would be hugely appreciated.
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@careduz Would it be possible to simply upgrade Cluster A to Kubernetes 1.20.2-do.0 instead of trying to move your persistent volumes to Cluster B?
–
Think different and code well,
-Conrad