add healthz check (#286)

* add healthz check

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

* add testing

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

k8s/gorush-deployment.yaml

@@ -19,3 +19,9 @@ spec:
         args: ["-c", "config.yml", "-e", "redis", "--redis-addr", "redis:6379"]
         ports:
         - containerPort: 8088
+        livenessProbe:
+          httpGet:
+            path: /healthz
+            port: 8088
+          initialDelaySeconds: 3
+          periodSeconds: 3

k8s/gorush-service.yaml

@@ -7,12 +7,14 @@ metadata:
     app: gorush
     tier: frontend
 spec:
+  selector:
+    app: gorush
+    tier: frontend
   # if your cluster supports it, uncomment the following to automatically create
   # an external load-balanced IP for the frontend service.
   type: LoadBalancer
   # type: NodePort
   ports:
-  - port: 8088
-  selector:
-    app: gorush
-    tier: frontend
+  - protocol: TCP
+    port: 80
+    targetPort: 8088