Jun-te Kim
5d8ab14e9f
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85 lines
2.6 KiB
YAML
85 lines
2.6 KiB
YAML
# ================================
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# DATABASUS - ONE-TIME MIGRATION JOB
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# Copies data from old local PVC → new ceph PVC
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#
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# Steps:
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# 1. Scale down databasus deployment:
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# kubectl scale deployment databasus --replicas=0
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# 2. Apply databasus-storage.yaml (creates new ceph PVC):
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# kubectl apply -f databasus-storage.yaml
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# 3. Apply this file:
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# kubectl apply -f databasus-migration-job.yaml
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# 4. Wait for job to complete:
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# kubectl wait --for=condition=complete job/databasus-migration --timeout=120s
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# 5. Verify data in new PVC:
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# kubectl logs job/databasus-migration
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# 6. Apply updated databasus.yaml (uses ceph PVC, drops local PV/PVC):
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# kubectl apply -f databasus.yaml
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# 7. Delete the old local PV and its PVC:
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# kubectl delete pvc databasus-pvc-local
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# kubectl delete pv databasus-pv
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# 8. Delete this job:
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# kubectl delete job databasus-migration
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# ================================
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---
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# Rename the old local PVC binding so both can coexist during migration.
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# Since the old PVC is named databasus-pvc, the new ceph one uses the same
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# name — so you must delete or rename the old one first, OR use this job
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# which mounts the old PV directly via a temporary PVC alias below.
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apiVersion: v1
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kind: PersistentVolumeClaim
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metadata:
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name: databasus-pvc-local
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spec:
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accessModes:
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- ReadWriteOnce
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storageClassName: databasus-local-storage
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resources:
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requests:
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storage: 500Mi
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# Bind to the existing local PV explicitly
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volumeName: databasus-pv
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---
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apiVersion: batch/v1
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kind: Job
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metadata:
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name: databasus-migration
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spec:
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template:
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spec:
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nodeSelector:
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kubernetes.io/hostname: mist
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restartPolicy: Never
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containers:
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- name: migrate
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image: busybox
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command:
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- sh
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- -c
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- |
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echo "=== Starting migration ==="
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echo "Source contents:"
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ls -lah /old-data/
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echo ""
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echo "Copying data..."
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cp -av /old-data/. /new-data/
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echo ""
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echo "=== Migration complete ==="
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echo "New data contents:"
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ls -lah /new-data/
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volumeMounts:
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- name: old-data
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mountPath: /old-data
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readOnly: true
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- name: new-data
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mountPath: /new-data
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volumes:
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- name: old-data
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persistentVolumeClaim:
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claimName: databasus-pvc-local
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- name: new-data
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persistentVolumeClaim:
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claimName: databasus-pvc
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