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UPGRADE_v0.0.24.md

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Upgrade guide v0.0.24

Note

APIs are currently in v1alpha1, which implies that non backward compatible changes might happen. See Kubernetes API versioning for more detail.

This guide illustrates, step by step, how to migrate to v0.0.24 from previous versions, as some breaking changes have been introduced. See:

MariaDB

Backup

Restore

Follow these steps for upgrading:

  • Uninstall you current mariadb-operator for preventing conflicts:
helm uninstall mariadb-operator

Alternatively, you may only downscale and delete the webhook configurations:

kubectl scale deployment mariadb-operator --replicas=0
kubectl scale deployment mariadb-operator-webhook --replicas=0
kubectl delete validatingwebhookconfiguration mariadb-operator-webhook
kubectl delete mutatingwebhookconfiguration mariadb-operator-webhook
  • In case you are manually applying manifests, get a copy of your MariaDB, Backup and Restore resources, as the CRD upgrade will wipe out fields that are no longer supported:
kubectl get mariadb mariadb -o yaml > mariadb.yaml
kubectl get backup backup -o yaml > backup.yaml
kubectl get restore restore -o yaml > restore.yaml
  • Upgrade CRDs to v0.0.24:

Important

Helm does not handle CRD upgrades. See helm docs.

Warning

This step will delete fields that are no longer supported in your resources.

kubectl replace -f https://github.com/mariadb-operator/mariadb-operator/releases/download/helm-chart-0.24.0/crds.yaml
  • Perform migrations in your MariaDB resouces:
  metrics:
+   enabled: true
    exporter:
-      image: prom/mysqld-exporter:v0.14.0
+      image: prom/mysqld-exporter:v0.15.1
  • Perform migrations in your Backup resouces:
-  maxRetentionDays: 30
+  maxRetention: 720h
  • Perform migrations in your Restore resouces:
-  fileName: backup.2023-12-19T09:00:00Z.sql
+  targetRecoveryTime: 2023-12-19T09:00:00Z
  • Upgrade mariadb-operator to v0.0.24:
helm repo update mariadb-operator
helm upgrade --install mariadb-operator mariadb-operator/mariadb-operator --version 0.24.0
  • If you previously decided to downscale the operator, make sure you upscale it back:
kubectl scale deployment mariadb-operator -n default --replicas=1
kubectl scale deployment mariadb-operator-webhook -n default --replicas=1
  • If you have previously created MariaDB instances with metrics enabled and a single replica, we also need to perform the following changes in order to create a new StatefulSet with spec.serviceName pointing to the internal Service(see mariadb-operator#319 for context):
kubectl delete statefulset mariadb --cascade=orphan
kubectl rollout restart statefulset mariadb