Add a ConfigMap

kustomize/app/cm.yaml

@@ -0,0 +1,9 @@
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: toy-cm
+  namespace: toy
+data:
+  CAT: pancake
+

kustomize/app/kustomization.yaml

@@ -4,6 +4,7 @@ kind: Kustomization
 namespace: toy
 resources:
   - secret.yaml
+  - cm.yaml
   - rollout.yaml
   - services.yaml
   - ingress.yaml

kustomize/app/rollout.yaml

@@ -41,6 +41,9 @@ spec:
                   name: toy-session-secret
                   key: session_secret
                   optional: true
+          envFrom:
+            - configMapRef:
+                name: toy-cm
           livenessProbe:
             httpGet:
               path: /livez