create-backup-plan-gke

gcloud alpha container backup-restore backup-plans create $BACKUP_PLAN \
    --project=$PROJECT_ID \
    --location=$LOCATION \
    --cluster=$CLUSTER \
    --all-namespaces \
    --include-secrets \
    --include-volume-data \
    --cron-schedule="0 * * * *" \
    --backup-retain-days=$RETAIN_DAYS \
    --locked