Kubernetes EmptyDir is a local directory that shares its storage volume with one or more containers for the goal of data sharing. Although it can be mounted on a hostPath volume or an Inline Volume, it cannot be used as a Persistent Volume Claim (PVC).
Our previous post covered EmptyDir and when it is a good idea to use them.
This post will focus on creating a deployment and attaching an EmptyDir volume to containers inside a pod.
The below example will create a deployment as usual. In the bottom part of the deployment, we mount a volume called data to the container. The volume type is emptyDir.
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
spec:
selector:
matchLabels:
app: web-app
template:
metadata:
labels:
app: web-app
spec:
containers:
- name: web-app
image: nginx
volumeMounts:
- name: data
mountPath: /data
volumes:
- name: data
emptyDir: {}
restartPolicy: Always To create the deployment, I am using the following command.
kubectl apply -f deployment.yaml