Lets say we have an application which accesses a file. This App is a jar which is packaged into an image and pushed to Registry for the Kubernetes to run it. But when we create the Pod, we need to configure a volume also in it. When we specify a volume we give a path, how do we place the file in that volume from lets say our virtual machine?
Please help me in understanding this with an explanation. Also should we create a storage so that its accessible from kubernetes cluster? please explain relevent topic as well to understand this.
Note: we are using azure cli
I think the best approach would be to create a ConfigMap with the data you want to use from your application. Then you just need to mount the ConfigMap as a volume in the Pod's (explained here) that need the data.
You can easily create a ConfigMap from a file like
kubectl create configmap your-configmap-name --from-file=/some/path/to/fileAnd then mount it in your Pod
apiVersion: v1
kind: Pod
metadata:
name: dapi-test-pod
spec:
containers:
- name: test-container
image: k8s.gcr.io/busybox
command: [ "/bin/sh", "-c", "ls /etc/config/" ]
volumeMounts:
- name: config-volume
mountPath: /etc/config
volumes:
- name: config-volume
configMap:
# Provide the name of the ConfigMap containing the files you want
# to add to the container
name: special-config