Resolving Storage Issues

Resolving storage issues in Kubernetes involves ensuring compatibility between StorageClassse, PVCs (PersistentVolumeClaims), and (PersistentVolumes) PVs. Address problems by verifying StorageClass availability, matching PVC requests, and provisioning PVs accordingly. When issues arise, update PVC configurations to correctly reference existing or recovered PVs, and consider data recovery strategies to prevent data loss.

Storage terms

We’ll be explaining some storage terms below.

• PersistentVolumeClaim (PVC): It’s a request for storage by a Pod in Kubernetes. It specifies the desired storage capacity, access mode, and optionally, a StorageClass. When a PVC is created, Kubernetes binds it to an available PersistentVolume (PV) that matches its requirements.

• PersistentVolume (PV): In Kubernetes, it represents physical storage resources provisioned by the cluster administrator. PVs are preallocated and can be dynamically provisioned. They provide storage capacity and access modes that can be bound to PVCs, allowing Pods to use persistent storage.

• StorageClass: In Kubernetes, it’s an abstraction layer that defines storage provisioning properties and parameters for PVs. It allows cluster administrators to set policies for dynamic provisioning, specifying storage attributes like the provisioner, access modes, and reclaim policy. PVCs reference StorageClasses to request dynamically provisioned PVs.

Resolving storage issues

We’ll be looking at resolving storage creation issues regarding pods using the persistent volume (pv.yaml), persistent volume claim (pvc.yaml) and the pod.yaml file below. We create the PV and StorageClass first.

• pvc.yaml