Die Cassandra-Datenbank verwendet
dynamisch erstellte nichtflüchtige Volumes zum Speichern von Daten. Für eine ordnungsgemäße Datenbankfunktion müssen Sie in Apigee eine StorageClass-Definition konfigurieren, die von einem Solid-State-Laufwerk (SSD) unterstützt wird.
Wenn Sie derzeit keine SSD für Cassandra konfiguriert haben, wird in diesem Thema erläutert, wie Sie eine neue StorageClass erstellen, die SSD verwendet, und als Standardklasse festlegen. Wenn Cassandra gestartet wird, wird diese Standard-StorageClass verwendet.
Standard-StorageClass ändern
In den folgenden Schritten wird erläutert, wie Sie eine StorageClass erstellen und als Standardklasse festlegen. Weitere Informationen finden Sie in der Kubernetes-Dokumentation unter Standardspeicherklasse ändern.
Rufen Sie den Namen der aktuellen Standard-StorageClass ab:
kubectl get sc
Beispiel:
kubectl get sc
NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE
premium-rwo pd.csi.storage.gke.io Delete WaitForFirstConsumer true 15h
standard kubernetes.io/gce-pd Delete Immediate true 15h
standard-rwo (default) pd.csi.storage.gke.io Delete WaitForFirstConsumer true 15h
Beschreiben Sie die StorageClass mit dem Namen standard-rwo. Der Typ lautet pd-balanced:
Erstellen Sie eine neue Datei mit dem Namen storageclass.yaml:
Fügen Sie diesen Code in die Datei ein. Beachten Sie, dass der Name der neuen Klasse apigee-sc ist. Sie können einen beliebigen Namen verwenden. Beachten Sie auch, dass der Speichertyp pd-ssd ist:
[[["Leicht verständlich","easyToUnderstand","thumb-up"],["Mein Problem wurde gelöst","solvedMyProblem","thumb-up"],["Sonstiges","otherUp","thumb-up"]],[["Schwer verständlich","hardToUnderstand","thumb-down"],["Informationen oder Beispielcode falsch","incorrectInformationOrSampleCode","thumb-down"],["Benötigte Informationen/Beispiele nicht gefunden","missingTheInformationSamplesINeed","thumb-down"],["Problem mit der Übersetzung","translationIssue","thumb-down"],["Sonstiges","otherDown","thumb-down"]],["Zuletzt aktualisiert: 2025-08-28 (UTC)."],[[["\u003cp\u003eThis document pertains to version 1.9 of the Apigee hybrid documentation and focuses on how to change the default storage class.\u003c/p\u003e\n"],["\u003cp\u003eApigee requires the use of Solid-State Drives (SSD) for the Cassandra database's dynamically created persistent volumes.\u003c/p\u003e\n"],["\u003cp\u003eThe provided steps outline how to create a new \u003ccode\u003eStorageClass\u003c/code\u003e using SSD and then set it as the default for your Kubernetes cluster.\u003c/p\u003e\n"],["\u003cp\u003eThe default StorageClass needs to be patched in order to disable the default tag, and then enable it on the newly created \u003ccode\u003eStorageClass\u003c/code\u003e to ensure Cassandra uses SSD.\u003c/p\u003e\n"]]],[],null,["# StorageClass configuration\n\n| You are currently viewing version 1.9 of the Apigee hybrid documentation. **This version is end of life.** You should upgrade to a newer version. For more information, see [Supported versions](/apigee/docs/hybrid/supported-platforms#supported-versions).\n\n\nThe Cassandra database uses\n[dynamically created](https://kubernetes.io/docs/concepts/storage/persistent-volumes/#dynamic) persistent volumes to store data. For proper database functioning,\nApigee requires you to configure a [StorageClass](https://kubernetes.io/docs/concepts/storage/storage-classes)\ndefinition that is backed by a solid-state drive (SSD).\n\n\nIf you do not currently have SSD configured for Cassandra, this topic explains how to create a\nnew StorageClass that uses SSD and make it the\ndefault class. When Cassandra starts, it will use this default StorageClass.\n| **KEY POINT:** Apigee requires the use of SSD for Cassandra.\n\nChange the default StorageClass\n-------------------------------\n\n\nThe following steps explain how to create a StorageClass and make it the default class. For more\ninformation, see [Change the default storage class](https://kubernetes.io/docs/tasks/administer-cluster/change-default-storage-class/) in the Kubernetes documentation.\n\n1. Get the name of the current default StorageClass: \n\n ```\n kubectl get sc\n ```\n\n\n For example: \n\n kubectl get sc\n NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE\n premium-rwo pd.csi.storage.gke.io Delete WaitForFirstConsumer true 15h\n standard kubernetes.io/gce-pd Delete Immediate true 15h\n standard-rwo (default) pd.csi.storage.gke.io Delete WaitForFirstConsumer true 15h\n \n2. Describe the StorageClass named `standard-rwo`. Note that its type is `pd-balanced`: \n\n ```\n kubectl describe sc standard-rwo\n ```\n\n\n For example: \n\n ```text\n kubectl describe sc standard-rwo\n ``` \n\n ```\n Name: standard-rwo\n IsDefaultClass: Yes\n Annotations: components.gke.io/layer=addon,storageclass.kubernetes.io/is-default-class=false\n Provisioner: pd.csi.storage.gke.io\n Parameters: type=pd-balanced\n AllowVolumeExpansion: True\n MountOptions: \u003cnone\u003e\n ReclaimPolicy: Delete\n VolumeBindingMode: WaitForFirstConsumer\n Events: \u003cnone\u003e\n ```\n3. Create a new file called `storageclass.yaml`.\n4. Add this code to the file. Note that the name of the new class is `apigee-sc`. You can use any name you like. Also, note that the storage type is `pd-ssd`: \n\n ```carbon\n ---\n kind: StorageClass\n apiVersion: storage.k8s.io/v1\n metadata:\n name: \"apigee-sc\"\n provisioner: pd.csi.storage.gke.io\n parameters:\n type: pd-ssd\n replication-type: none\n volumeBindingMode: WaitForFirstConsumer\n allowVolumeExpansion: true\n ```\n5. Apply the new StorageClass to your Kubernetes cluster: \n\n ```\n kubectl apply -f storageclass.yaml\n ```\n6. Execute the following two commands to change the default StorageClass: \n\n ```\n kubectl patch storageclass standard-rwo \\\n -p '{\"metadata\": {\"annotations\":{\"storageclass.kubernetes.io/is-default-class\":\"false\"}}}'\n ``` \n\n ```\n kubectl patch storageclass apigee-sc \\\n -p '{\"metadata\": {\"annotations\":{\"storageclass.kubernetes.io/is-default-class\":\"true\"}}}'\n ```\n7. Execute this command to verify that the new default StorageClass is called `apigee-sc`: \n\n ```\n kubectl get sc\n ```\n\n\n For example: \n\n kubectl get sc\n NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE\n apigee-sc (default) kubernetes.io/gce-pd Delete WaitForFirstConsumer true 14h\n premium-rwo pd.csi.storage.gke.io Delete WaitForFirstConsumer true 15h\n standard kubernetes.io/gce-pd Delete Immediate true 15h\n standard-rwo pd.csi.storage.gke.io Delete WaitForFirstConsumer true 15h"]]
