Sharing Storage between Containers

What are Stateless applications?

Stateless application are those applications that do not maintain any form of persistent state or data locally.

How are Stateful application different from Stateless applications?

Those applications that maintain some form of persistent state or data are called stateful applications. The key characteristic that differentiate them from stateless applications is that these applications don’t rely on storing data locally and they don’t treat each request as independent.

What is Kubernetes Volume?

Volume in Kubernetes is a data storing feature with the help of which we can store data that is persistent and can be accessed by containers in a Kubernetes pod.

How to share storage between Kubernetes Containers?

In Kubernetes, sharing storage between Containers can be achieved by the help of Kubernetes Volumes, a Volume in Kubernetes is a data storing feature with the help of which we can store data that is persistent and can be accessed by containers in a Kubernetes pod.

What are types of Volume in Kubernetes?

There are five types of Volume in Kubernetes:

  1. Persistent Volumes
  2. Ephemeral Volumes
  3. EmptyDir Volumes
  4. Kubernetes hostPath Volumes
  5. Kubernetes Volumes ConfigMap


How To Share Storage Between Containers In Kubernetes ?

Kubernetes, or K8s, is an open-sourced container orchestration technology that is used to automate the manual processes of deploying, managing, and scaling applications by the help of containers. Kubernetes uses a single container per pod, which is great for most stateless applications, but some applications require more than one container to work together and require some way to persist data and share storage between pods. Sharing storage between containers in a Kubernetes cluster can be achieved with the help of Kubernetes volumes. A volume in Kubernetes is a data-storing feature with the help of which we can store persistent data that can be accessed by containers in a Kubernetes pod. In this article, we will discuss how to share storage between containers in a Kubernetes cluster using volumes.

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Tutorial-How to Share Storage Between Containers?

Follow this step-by-step guide to understand how to share storage between containers in a Kubernetes cluster....

How does Kubernetes storage work?

Volumes...

Static vs. Dynamic Provisioning

Static Provisioning Dynamic Provisioning Static Provisioning refers to manually creating the Storage volumes (PersistentVolumes (PVs) and PersistentVolumeClaims (PVCs) ) and managing them. With Dynamic Provisioning, the Kubernetes Storage Volumes can be created on demand. In this method, first the Cluster administrator creates the Storage and then maps that to a Persistent Volume Claim which is used by specific Pods. In Dynamic Provisioning, the cluster administrator defines the StorageClass that contains the fields provisioner, parameters and reclaim Policy. Afterwards PersistentVolumeClaims can request the StorageClass to dynamically provision the storage volumes to the pod. Static Provisioning is only useful when the Cluster administrators known about the Storage requirements already and these requirements are not expected to change frequently. It is an automated process and is used when the Storage requirements depend on dynamic workloads. It is more complex to manage and maintain at scale. This simplifies storage management and improves cluster efficiency....

Conclusion

Kubernetes or K8s is an open-sourced container orchestration technology that is used for automating the manual processes of deploying, managing and scaling applications by the help of containers. In Kubernetes, sharing storage between Containers can be achieved by the help of Kubernetes Volumes, a Volume in Kubernetes is a data storing feature with the help of which we can store data that is persistent and can be accessed by containers in a Kubernetes pod. We hope that this article taught you about how to share storage between Containers in a Kubernetes Cluster. Make sure to follow other articles on GeeksforGeeks to know about more tools in DevOps....

Sharing Storage between Containers – FAQ’s

What are Stateless applications?...