solution

.infrastructure/configMap.yml

@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+ name: app-config
+ namespace: todoapp
+data:
+ PYTHONUNBUFFERED: 1

.infrastructure/deployment.yml

@@ -29,7 +29,10 @@ spec:
             cpu: "150m"
         env:
         - name: PYTHONUNBUFFERED
-          value: "1"
+          valueFrom:
+            configMapKeyRef:
+              name: app-config
+              key: PYTHONUNBUFFERED
         ports:
         - containerPort: 8080
         livenessProbe:

.infrastructure/secret.yml

@@ -0,0 +1,8 @@
+apiVersion: v1
+kind: Secret
+metadata:
+ name: app-secrets
+ namespace: todoapp
+type: Opaque
+data:
+ SECRET_KEY: NS4y

INSTRUCTION.md

@@ -0,0 +1,17 @@
+## How to apply all the changes
+
+``
+
+    kubectl apply -f configMap.yml
+    kubectl apply -f app-secret.yml
+    kubectl apply -f deployment.yml
+
+``
+
+## How to validate the changes
+
+``
+
+    kubectl get secret app-secrets -o jsonpath='{.data.kubectl get secret app-secrets -o jsonpath='{.data.SECRET_KEY}'}'
+
+``

src/todolist/settings.py

@@ -18,7 +18,7 @@
 # See https://docs.djangoproject.com/en/1.7/howto/deployment/checklist/
 
 # SECURITY WARNING: keep the secret key used in production secret!
-SECRET_KEY = "@e2(yx)v&tgh3_s=0yja-i!dpebxsz^dg47x)-k&kq_3zf*9e*"
+SECRET_KEY = os.environ['SECRET_KEY']
 
 # SECURITY WARNING: don't run with debug turned on in production!
 DEBUG = True