update guestbook-demo to work on openshift (#484)

examples/guestbook-demo/README.md

@@ -43,3 +43,14 @@ If you are using `minikube` for local Kubernetes deployment, you can access your
 $ minikube service guestbook 
 Opening kubernetes service default/guestbook in default browser...
 ```
+
+If you are using `minishift` for local OpenShift development, you can create Route  and access your Guestbook instance using it.
+
+```sh
+$ oc expose svc frontend
+route "frontend" exposed
+
+$ oc get route frontend
+NAME       HOST/PORT                                 PATH      SERVICES   PORT            TERMINATION   WILDCARD
+frontend   frontend-myproject.192.168.64.19.nip.io             frontend   frontend-8080                 None
+```

examples/guestbook-demo/backend.yaml

@@ -13,7 +13,7 @@ containers:
         valueFrom:
           configMapKeyRef:
             name: mongodb-user
-            key: MONGODB_USERNAME
+            key: MONGODB_USER
       - name: MONGODB_DATABASE
         valueFrom:
           configMapKeyRef:

examples/guestbook-demo/db.yaml

@@ -1,8 +1,7 @@
 name: mongodb
 
 containers:
-  - image: bitnami/mongodb@sha256:0665d6f4be13b965a8ff60a11b770e6434b627ffc12df640e3c0527af53d449b
-
+  - image:  centos/mongodb-32-centos7:3.2
     envFrom:
       - secretRef:
           name: mongodb-admin
@@ -13,8 +12,7 @@ containers:
 
     volumeMounts:
      - name: mongodb-data
-       mountPath: /bitnami
-
+       mountPath: /var/lib/mongodb/data
 services:
   - portMappings:
     - 27017
@@ -34,6 +32,6 @@ secrets:
 configMaps:
   - name: mongodb-user
     data:
-      MONGODB_USERNAME: user
+      MONGODB_USER: user
       MONGODB_DATABASE: db
       MONGODB_SERVER: mongodb:27017