Dynamic Provisioning

In previous sections of this chapter, we saw that the cluster administrator needs to provision PVs for us before we can use them as storage for our application. To solve this problem, Kubernetes supports dynamic volume provisioning as well. Dynamic volume provisioning enables the creation of storage volumes on-demand. This eliminates the need for administrators to create volumes before creating any PVCs. The volume is provisioned only when there's a claim requesting it.

In order to enable dynamic provisioning, the administrator needs to create one or more storage classes that users can use in their claims to make use of dynamic provisioning. These StorageClass objects need to specify what provisioner will be used along with its parameters. The provisioner depends on the environment. Every cloud provider supports different provisioners, so make sure you check with your cloud provider if you happen to create this kind of storage class in your cluster.

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