discopoy.blogg.se - What is kubernetes pvc

#What is kubernetes pvc install#
#What is kubernetes pvc driver#
#What is kubernetes pvc free#

A volume can support all types of storage, including network file system (NFS), local storage devices, and cloud-based storage services. Volumes are basic entities in Kubernetes, used to provide storage to containers. CSI provides an extensible plugin architecture, so you can easily add plugins that support the storage devices and services used in your organization.

#What is kubernetes pvc driver#

Before CSI, users needed to integrate the data store’s device driver with Kubernetes, which was quite complex. Related content: read our guide to hybrid cloud architecture Container Storage Interface (CSI)ĬSI is a Kubernetes extension that simplifies storage management. Kubernetes provides mechanisms to abstract this storage for applications running on containers, so that applications never communicate directly with storage media. This can include file, block, or object storage services from cloud providers (such as Amazon S3), storage devices in the local data center, or data services like databases. Kubernetes supports multiple types of persistent storage. Each container has ephemeral storage by default-this storage uses a temporary directory on the machine that hosts the Kubernetes pod. In Kubernetes, the most basic type of storage is non-persistent-also known as ephemeral. In these cases, containers must have a location to permanently store information, which should outlive the lifespan of an individual container. For example, applications that need to share information or maintain state cannot lose this information. Immutability is not always appropriate, however. This means that when containers are destroyed, including all data created during the lifetime of the containers. Persistent Volumes (PV) and Persistent Volume Claims (PVC)Ĭontainers use the principle of immutability.

If properly managed, the Kubernetes storage framework can be used to automatically provision the most appropriate storage to multiple applications, with minimal administrative overhead. This makes it possible to create dynamic storage resources that can serve different types of applications. When managing containerized environments, Kubernetes storage is useful for storage administrators, because it allows them to maintain multiple forms of persistent and non-persistent data in a Kubernetes cluster. It provides services and management capabilities needed to efficiently deploy, operate, and scale containers in a cloud or cluster environment.

#What is kubernetes pvc free#

You can read more about Ondat and Kubernetes best practices in our docs.Kubernetes is a free and open-source container orchestration platform.

Create your first Ondat PersistentVolumeClaim as described belowĪs a simple first use of Ondat with Kubernetes, following the example below will create a PersistentVolumeClaim (PVC) and schedule a Pod to mount the PersistentVolume (PV) provisioned by the PVC.

#What is kubernetes pvc install#

Install Ondat to the platform of your choice.

Establish that you have all the prerequisites for Ondat.

Ondat provides cloud native storage for Kubernetes used for provisioning Persistent Volumes. Kubernetes provides a Persistent Volume subsystem that abstracts details of how storage is provided from how it is consumed and Ondat can power this subsystem using nearly any underlying storage system. Ondat can provide persistent volumes in a Kubernetes-native way while ensuring maximum performance, availability and resilience for the applications you're running, regardless of whether you're on-premise or in the cloud. Without persistence, application data is lost whenever a Pod is restarted or updated. When running stateful applications on Kubernetes, it is essential to ensure persistence of the underlying volumes.