support global config in k8s. (#295)

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

k8s/gorush-aws-alb-ingress.yaml

@@ -7,8 +7,8 @@ metadata:
     # Kubernetes Ingress Controller for AWS ALB
     # https://github.com/coreos/alb-ingress-controller
     alb.ingress.kubernetes.io/scheme: internet-facing
-    alb.ingress.kubernetes.io/subnets: "subnet-3cd22c75,subnet-4aff342d"
+    alb.ingress.kubernetes.io/subnets: subnet-aa3dfbe3,subnet-4aff342d
-    alb.ingress.kubernetes.io/security-groups: sg-329c2b54
+    alb.ingress.kubernetes.io/security-groups: sg-71069b17
 spec:
   rules:
   - host: gorush.example.com

k8s/gorush-configmap.yaml

@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: gorush-config
+  namespace: gorush
+data:
+  # stat
+  stat.engine: redis
+  stat.redis.host: redis:6379

k8s/gorush-deployment.yaml

@@ -15,8 +15,6 @@ spec:
       - image: appleboy/gorush
         name: gorush
         imagePullPolicy: Always
-        command: ["/gorush"]
-        args: ["-c", "config.yml", "-e", "redis", "--redis-addr", "redis:6379"]
         ports:
         - containerPort: 8088
         livenessProbe:
@@ -25,3 +23,14 @@ spec:
             port: 8088
           initialDelaySeconds: 3
           periodSeconds: 3
+        env:
+        - name: GORUSH_STAT_ENGINE
+          valueFrom:
+            configMapKeyRef:
+              name: gorush-config
+              key: stat.engine
+        - name: GORUSH_STAT_REDIS_ADDR
+          valueFrom:
+            configMapKeyRef:
+              name: gorush-config
+              key: stat.redis.host