--- slug: "kubernetes-secret-from-env-file" title: "Creating a Kubernetes Secret from an Env File" description: "When saving secret information locally in a file named .env and registering it with Kubernetes:" url: "https://www.ytyng.com/en/blog/kubernetes-secret-from-env-file" publish_date: "2021-10-11T09:25:18Z" created: "2021-10-11T09:25:18Z" updated: "2026-02-26T21:25:27.016Z" categories: [] keywords: "" featured_image_url: "https://media.ytyng.com/resize/20230812/634cda8afa1e45b8bd23076fce3ee2af.png.webp?width=768" has_video: false has_music: false video_urls: [] music_urls: [] lang: "en" --- # Creating a Kubernetes Secret from an Env File

When saving secret information locally in a file named .env and registering it with Kubernetes:

Execute the following script in the development environment during deployment.

# Set kubeconfig
export KUBECONFIG=${HOME}/.kube/my-kube-config

# If a secret already exists, delete it (for the next registration)
kubectl -n mynamespace delete secret myapp-env
# Register the local ../.env as a secret
kubectl -n mynamespace create secret generic myapp-env --from-env-file=../.env

When using it

apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp-deployment
  namespace: mynamespace
spec:
  replicas: 1
  selector:
    matchLabels:
      app: myapp
  template:
    metadata:
      labels:
        app: myapp
    spec:
      containers:
        - name: myapp
          image: my-image:latest
          imagePullPolicy: Always
          ports:
            - containerPort: 8008
          env:
            - name: DJANGO_SETTINGS_MODULE
              value: myapp.settings.production
          envFrom:
            - secretRef:
                name: myapp-env