Für die Cassandra-Datenbank verwendet die Hybridlaufzeit zum Speichern von Daten dynamisch erstellte nichtflüchtige Volumes. Zum ordnungsgemäßen Konfigurieren von Cassandra müssen Sie eine StorageClass-Definition konfigurieren, die von einem Solid-State-Laufwerk (SSD) unterstützt wird.
In diesem Thema wird 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 AGE
standard (default) kubernetes.io/gce-pd 98d
Beschreiben Sie die StorageClass mit dem Namen standard. Der Typ lautet pd-standard:
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\u003eApigee hybrid documentation version 1.3 is end-of-life, and users should upgrade to a newer version.\u003c/p\u003e\n"],["\u003cp\u003eThe Cassandra database in Apigee hybrid runtime uses dynamically created persistent volumes for data storage, requiring a StorageClass definition.\u003c/p\u003e\n"],["\u003cp\u003eFor optimal performance, the StorageClass used by Cassandra must utilize an SSD backend.\u003c/p\u003e\n"],["\u003cp\u003eYou can create a new StorageClass, for example \u003ccode\u003eapigee-sc\u003c/code\u003e, and set it as the default StorageClass in your Kubernetes cluster.\u003c/p\u003e\n"],["\u003cp\u003eThe default StorageClass can be modified by patching the current default to be non-default and patching the desired StorageClass to be the default.\u003c/p\u003e\n"]]],[],null,["# StorageClass configuration\n\n| You are currently viewing version 1.3 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\nFor the Cassandra database, hybrid runtime uses\n[dynamically created](https://kubernetes.io/docs/concepts/storage/persistent-volumes/#dynamic) persistent volumes to store data. To configure\nCassandra properly, you must configure a [StorageClass](https://kubernetes.io/docs/concepts/storage/storage-classes)\ndefinition that is backed by a solid-state drive (SSD).\n\n\nThis topic explains how to create a new StorageClass that uses SSD and make it the\ndefault class. When Cassandra starts, it will use this default StorageClass.\n| **KEY POINT:** For performance reasons, it is important that the StorageClass uses an SSD backend.\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 AGE\n standard (default) kubernetes.io/gce-pd 98d\n\n2. Describe the StorageClass named `standard`. Note that its type is `pd-standard`: \n\n ```\n kubectl describe sc standard\n ```\n\n\n For example: \n\n kubectl describe sc standard\n Name: standard\n IsDefaultClass: Yes\n Annotations: storageclass.beta.kubernetes.io/is-default-class=true\n Provisioner: kubernetes.io/gce-pd\n Parameters: type=pd-standard\n AllowVolumeExpansion: \u003cunset\u003e\n MountOptions: \u003cnone\u003e\n ReclaimPolicy: Delete\n VolumeBindingMode: Immediate\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 ```\n ---\n kind: StorageClass\n apiVersion: storage.k8s.io/v1\n metadata:\n name: \"apigee-sc\"\n provisioner: kubernetes.io/gce-pd\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 \\\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 AGE\n apigee-sc (default) kubernetes.io/gce-pd 1d\n standard kubernetes.io/gce-pd 98d"]]
