Feat: add liveness probe

k8s/deploy.backend.yaml

@@ -28,3 +28,9 @@ spec:
               value: '0.0.0.0'
             - name: MONGO_CONNECTION_STRING
               value: 'mongodb://cnd2025-mongo.cnd2025.svc.cluster.local:27017/todo'
+          livenessProbe:
+            httpGet:
+              path: /ping
+              port: 8888
+            initialDelaySeconds: 5
+            periodSeconds: 5

k8s/deploy.frontend.yaml

@@ -21,3 +21,9 @@ spec:
           ports:
             - name: http
               containerPort: 80
+          livenessProbe:
+            httpGet:
+              path: /
+              port: 80
+            initialDelaySeconds: 5
+            periodSeconds: 5

k8s/deploy.mongo.yaml

@@ -21,3 +21,11 @@ spec:
           ports:
             - name: mongo
               containerPort: 27017
+          livenessProbe:
+            exec:
+              command:
+                - mongosh
+                - --eval
+                - version()
+            initialDelaySeconds: 5
+            periodSeconds: 5