How to mount multiple files / secrets into common directory in kubernetes?

Projected Volume

You can use a projected volume to have two secrets in the same directory

Example

apiVersion: v1kind: Podmetadata:  labels:    run: alpine-secret  name: alpine-secretspec:  containers:  - command:    - sleep    - "3600"    image: alpine    name: alpine-secret    volumeMounts:    - name: xyfiles      mountPath: "/var/secrets/"      readOnly: true  volumes:  - name: xyfiles    projected:      sources:      - secret:          name: my-secret-one      - secret:          name: my-secret-two

(EDIT: Never mind - I just noticed @Jonas gave the same answer earlier. +1 from me)

Starting with Kubernetes v1.11+ it is possible with projected volumes:

A projected volume maps several existing volume sources into the same directory.

Currently, the following types of volume sources can be projected:

• secret
• downwardAPI
• configMap
• serviceAccountToken

This is an example for "... how to use a projected Volume to mount several existing volume sources into the same directory".

May be subPath (using subPath) will help.

Example:

        volumeMounts:        - name: app-redis-vol          mountPath: /app/config/redis.yaml          subPath: redis.yaml        - name: app-config-vol          mountPath: /app/config/app.yaml          subPath: app.yaml      volumes:        - name: app-redis-vol          configMap:            name: config-map-redis            items:              - key: yourKey                path: redis.yaml        - name: app-config-vol          configMap:            name: config-map-app            items:              - key: yourKey                path: app.yaml

Here your configMap named config-map-redis created from file redis.yaml mounted in app/config/ as file redis.yaml.Also configMap config-map-app mounted in app/config/ as app.yaml

There is nice article about this here: Injecting multiple Kubernetes volumes to the same directory