Velero Backup Kubernetes

Top

• https://stackoverflow.com/questions/75803242/velero-volume-snapshots-contain-no-data-when-restoring-a-backup
• https://velero.io/docs/main/contributions/minio/
• https://velero.io/docs/main/file-system-backup/

install-velero.sh

#!/bin/bash
set -eu

kubectl apply -f examples/minio/00-minio-deployment.yaml
sleep 10

cat <<EOF> minio.credentials
[default]
aws_access_key_id=${MINIO_ACCESS_KEY}
aws_secret_access_key=${MINIO_SECRET_KEY}
EOF

velero install \
    --provider aws \
    --plugins velero/velero-plugin-for-aws:v1.5.5 \
    --bucket velero \
    --secret-file ./minio.credentials \
    --default-volumes-to-fs-backup \
    --use-node-agent \
    --use-volume-snapshots=false \
    --backup-location-config region=minio,s3ForcePathStyle="true",s3Url=http://minio.velero.svc:9000

backup-restore.sh

set -ux

# kubectl delete ns nginx-example
# sleep 10
kubectl apply -f examples/nginx-app/play.yaml
sleep 10

rand=$(< /dev/urandom tr -dc a-z0-9 | head -c5)
kubectl -n nginx-example exec -it deploy/nginx-deployment -c nginx -- bash -c "echo foo was here > /var/log/nginx/foo.was.here.$rand.txt"
kubectl -n nginx-example exec -it deploy/nginx-deployment -c nginx -- ls -lhat /var/log/nginx
velero backup create "nginx-example-${rand}" --include-namespaces nginx-example --default-volumes-to-fs-backup --ttl 180h
echo done

echo delete; sleep 15
kubectl delete namespace nginx-example
sleep 10
kubectl get namespace/nginx-example || sleep 10
echo restore; sleep 5
velero restore create --from-backup "nginx-example-${rand}"
sleep 10
kubectl -n nginx-example exec -it deploy/nginx-deployment -- ls -lhat /var/log/nginx

uninstall.sh

kubectl delete namespace/velero clusterrolebinding/velero
kubectl delete crds -l component=velero
kubectl delete ns nginx-example

Other

https://velero.io/docs/v1.6/examples/

https://learn.microsoft.com/en-us/azure/aks/hybrid/backup-workload-cluster#install-velero-with-minio-storage

https://learn.microsoft.com/en-us/azure/aks/hybrid/backup-workload-cluster#install-velero-with-azure-blob-storage

https://foxutech.medium.com/how-to-take-azure-kubernetes-backup-using-velero-3a841753a9f7

https://github.com/vmware-tanzu/velero

https://velero.io/docs/main/file-system-backup/

https://velero.io/docs/main/file-system-backup/#how-backup-and-restore-work