feat: ✨ Config: Configmaps

ConfigMaps in Kubernetes are a flexible way to store and manage non-sensitive configuration data for your applications, enabling you to decouple configuration settings from container images and simplifying updates and maintenance.

Makefile

@@ -15,6 +15,8 @@ delete:
 redeploy:
 	$(MAKE) delete
 	$(MAKE) deploy
+	sleep 3
+	$(MAKE) port-forward
 
 port-forward: 
 	kubectl port-forward svc/go-http-app-service 8000:80

k8s/configmap-env.yaml

@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: go-http-app-env
+data:
+  NAME: "Gabriel Costa"
+  AGE: "36"

k8s/deployment.yaml

@@ -20,6 +20,12 @@ spec:
           image: wesleywillians/hello-go:v4 # This image have the fields "NAME" & "AGE"
           env:
             - name: NAME
-              value: "Gabriel Costa"
+              valueFrom:
+                configMapKeyRef:
+                  key: NAME
+                  name: go-http-app-env
             - name: AGE
-              value: "23"
+              valueFrom:
+                configMapKeyRef:
+                  key: AGE
+                  name: go-http-app-env