update k8s document and yml (#284)

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

README.md

@@ -751,40 +751,32 @@ $ http -v --verify=no --json GET http://your.docker.host/api/stat/go
 
 ## Run gorush in Kubernetes
 
-Please make sure you are install [Minikube](https://kubernetes.io/docs/tutorials/stateless-application/hello-minikube/) first.
-
-### Create a Minikube cluster
-
-```sh
-$ minikube start --vm-driver=xhyve
-```
-
 ### Quick Start
 
-Start the gorush with one command:
+Create name space `gorush`:
 
 ```sh
-$ kubectl create -f k8s
-deployment "frontend" created
-service "frontend" created
-deployment "redis-master" created
-service "redis-master" created
+$ kubectl create -f k8s/gorush-namespace.yaml
 ```
 
-Then, list all your Services:
+Create redis service:
 
 ```sh
-$ kubectl get services
-NAME           CLUSTER-IP   EXTERNAL-IP   PORT(S)          AGE
-frontend       10.0.0.156   <pending>     8088:32517/TCP   30s
-kubernetes     10.0.0.1     <none>        443/TCP          14d
-redis-master   10.0.0.67    <none>        6379/TCP         30s
+$ kubectl create -f k8s/gorush-redis-deployment.yaml
+$ kubectl create -f k8s/gorush-redis-service.yaml
 ```
 
-### view the gorush home page
+Create gorush service:
 
 ```sh
-$ minikube service frontend
+$ kubectl create -f k8s/gorush-deployment.yaml
+$ kubectl create -f k8s/gorush-service.yaml
+```
+
+### Ingress Controller for AWS ALB
+
+```
+$ kubectl create -f k8s/gorush-aws-ingress.yaml
 ```
 
 ### Clean up the gorush:

k8s/gorush-aws-ingress.yaml

@@ -0,0 +1,20 @@
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: gorush
+  namespace: gorush
+  annotations:
+    # 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/security-groups: sg-329c2b54
+spec:
+  rules:
+  - host: gorush.example.com
+    http:
+      paths:
+      - path: /
+        backend:
+          serviceName: gorush
+          servicePort: 8088

k8s/gorush-deployment.yaml

@@ -2,6 +2,7 @@ apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
   name: gorush
+  namespace: gorush
 spec:
   replicas: 3
   template:
@@ -11,17 +12,10 @@ spec:
         tier: frontend
     spec:
       containers:
-      - name: gorush
-        image: appleboy/gorush
+      - image: appleboy/gorush
+        name: gorush
+        imagePullPolicy: Always
         command: ["/gorush"]
         args: ["-c", "config.yml", "-e", "redis", "--redis-addr", "redis:6379"]
-        env:
-        - name: GET_HOSTS_FROM
-          # value: dns
-          # If your cluster config does not include a dns service, then to
-          # instead access environment variables to find service host
-          # info, comment out the 'value: dns' line above, and uncomment the
-          # line below:
-          value: env
         ports:
         - containerPort: 8088

k8s/gorush-namespace.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: gorush

k8s/gorush-redis-deployment.yaml

@@ -2,6 +2,7 @@ apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
   name: redis
+  namespace: gorush
 spec:
   replicas: 1
   template:

k8s/gorush-redis-service.yaml

@@ -2,6 +2,7 @@ apiVersion: v1
 kind: Service
 metadata:
   name: redis
+  namespace: gorush
   labels:
     app: redis
     role: master

k8s/gorush-service.yaml

@@ -2,6 +2,7 @@ apiVersion: v1
 kind: Service
 metadata:
   name: gorush
+  namespace: gorush
   labels:
     app: gorush
     tier: frontend
@@ -9,6 +10,7 @@ spec:
   # 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:

k8s/ingress.yaml

@@ -1,10 +0,0 @@
-apiVersion: extensions/v1beta1
-kind: Ingress
-metadata:
-  name: gorush
-  annotations:
-    http.port: "8089"
-spec:
-  backend:
-    serviceName: gorush
-    servicePort: 8088