Adding persistence to your applications

Now, it is time to add storage to your applications; we are going to use the storage classes installed with Longhorn to provide persistence to your applications. In this section, we are going to explore two examples using persistent volumes. In this part of the book, we are going to discuss the persistent volumes and the process of creating storage for a Pod. But first, we need a persistent volume claim definition to provision this storage.

Creating an NGINX pod with a storage volume

To create your NGINX application using a storage volume that uses the Longhorn storage class, follow these steps:

1. Create pvc.yaml:

   apiVersion: v1
   kind: PersistentVolumeClaim
   metadata:
     name: longhorn-volv-pvc
   spec:
     accessModes:
       - ReadWriteMany
     storageClassName: longhorn
     resources:
       requests:
         storage: 2Gi

2. Apply the pvc.yaml YAML file:

   $ kubectl create -f pvc.yaml

   Now, it’s time to create a pod using this PVC that uses the Longhorn storage...