Restore Helm chart¶
The version of the PMM Server should be greater than or equal to the version in a snapshot. To restore from the snapshot, delete the old deployment first:
helm uninstall pmm
And then use snapshot configuration to start the PMM Server again with the correct version and correct storage configuration:
helm install pmm \
--set image.tag="2.34.0" \
--set storage.name="pmm-storage-old" \
--set storage.dataSource.name="before-v2.34.0-upgrade" \
--set storage.dataSource.kind="VolumeSnapshot" \
--set storage.dataSource.apiGroup="snapshot.storage.k8s.io" \
--set secret.create=false \
--set secret.name=pmm-secret \
percona/pmm
Here, we created a new pmm-storage-old PVC with data from the snapshot. So, there are a couple of PV and PVCs available in a cluster.
$ kubectl get pvc
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
pmm-storage-old-pmm-0 Bound pvc-70e5d2eb-570f-4087-9515-edf2f051666d 10Gi RWO csi-hostpath-sc 3s
pmm-storage-pmm-0 Bound pvc-9dbd9160-e4c5-47a7-bd90-bff36fc1463e 10Gi RWO csi-hostpath-sc 89m
$ kubectl get pv
NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE
pvc-70e5d2eb-570f-4087-9515-edf2f051666d 10Gi RWO Delete Bound default/pmm-storage-old-pmm-0 csi-hostpath-sc 4m50s
pvc-9dbd9160-e4c5-47a7-bd90-bff36fc1463e 10Gi RWO Delete Bound default/pmm-storage-pmm-0 csi-hostpath-sc 93m
Delete unneeded PVC when you are sure you don’t need them.
Get expert help¶
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