storagek8sio

storagek8sio refers to the set of Kubernetes APIs and concepts related to persistent storage. Kubernetes, an open-source container orchestration system, uses this framework to manage the lifecycle of storage resources for containerized applications. The core idea is to decouple storage from the pods that consume it, allowing for independent scaling and management.

Key components within storagek8sio include PersistentVolumes (PVs) and PersistentVolumeClaims (PVCs). A PersistentVolume is a piece of storage in the cluster that has been provisioned by an administrator or dynamically provisioned using StorageClasses. A PersistentVolumeClaim, on the other hand, is a request for storage by a user. Pods consume storage through PVCs, which bind to available PVs.

StorageClasses enable dynamic provisioning of PersistentVolumes. Administrators can define different types of storage (e.g., SSD, HDD, cloud provider specific storage) as StorageClasses, and users can request storage by specifying the desired StorageClass in their PVC. This abstraction allows applications to be storage-agnostic, as they only need to specify their storage requirements, not the underlying implementation details.

The storagek8sio model supports various storage types, including network-attached storage (NAS) like NFS and iSCSI, as well as cloud provider-specific storage solutions like Amazon EBS, Google Persistent Disk, and Azure Disk. This flexibility ensures that Kubernetes can be deployed in a wide range of environments with diverse storage needs.