Update examples to support v1beta3 api - cassandra

examples/cassandra/v1beta3/README.md

@@ -0,0 +1,64 @@
+## Cloud Native Deployments of Cassandra using Kubernetes v1beta3 api
+
+The following document describes the development of a _cloud native_ [Cassandra](http://cassandra.apache.org/) deployment on Kubernetes.  When we say _cloud native_ we mean an application which understands that it is running within a cluster manager, and uses this cluster management infrastructure to help implement the application.  In particular, in this instance, a custom Cassandra ```SeedProvider``` is used to enable Cassandra to dynamically discover new Cassandra nodes as they join the cluster.
+
+This document also attempts to describe the core components of Kubernetes, _Pods_, _Services_ and _Replication Controllers_.
+
+### Prerequisites
+This example assumes that you have a Kubernetes cluster installed and running, and that you have installed the ```kubectl``` command line tool somewhere in your path.  Please see the [getting started](https://github.com/GoogleCloudPlatform/kubernetes/tree/master/docs/getting-started-guides) for installation instructions for your platform.
+
+
+The v1beta3 API is not enabled by default. The kube-apiserver process needs to run with the --runtime_config=api/v1beta3 argument. Use the following command to enable it:
+```sh
+$sudo sed -i 's|KUBE_API_ARGS="|KUBE_API_ARGS="--runtime_config=api/v1beta3|' /etc/kubernetes/apiserver
+
+
+```
+
+
+### quickstart
+For those of you who are impatient, here is the summary of the commands we ran in this tutorial.
+
+```sh
+# create a single cassandra node
+kubectl create -f cassandra-controller.yaml
+
+# create a service to track all cassandra nodes
+kubectl create -f cassandra-service.yaml
+
+$ docker exec <cassandra-container-id> nodetool status
+Datacenter: datacenter1
+=======================
+Status=Up/Down
+|/ State=Normal/Leaving/Joining/Moving
+--  Address      Load       Tokens  Owns (effective)  Host ID                               Rack
+UN  10.244.3.29  72.07 KB   256     100.0%            f736f0b5-bd1f-46f1-9b9d-7e8f22f37c9e  rack1
+
+# scale up to 2 nodes
+kubectl resize rc cassandra --replicas=2
+
+# validate the cluster
+$ docker exec <cassandra-container-id> nodetool status
+Datacenter: datacenter1
+=======================
+Status=Up/Down
+|/ State=Normal/Leaving/Joining/Moving
+--  Address      Load       Tokens  Owns (effective)  Host ID                               Rack
+UN  10.244.3.29  72.07 KB   256     100.0%            f736f0b5-bd1f-46f1-9b9d-7e8f22f37c9e  rack1
+UN  10.244.1.10  41.14 KB   256     100.0%            42617acd-b16e-4ee3-9486-68a6743657b1  rack1
+
+# scale up to 4 nodes
+kubectl resize rc cassandra --replicas=4
+
+# validate the cluster
+$ docker exec <cassandra-container-id> nodetool status
+Datacenter: datacenter1
+=======================
+Status=Up/Down
+|/ State=Normal/Leaving/Joining/Moving
+--  Address      Load       Tokens  Owns (effective)  Host ID                               Rack
+UN  10.244.3.29  72.07 KB   256     49.5%             f736f0b5-bd1f-46f1-9b9d-7e8f22f37c9e  rack1
+UN  10.244.2.14  61.62 KB   256     52.6%             3e9981a6-6919-42c4-b2b8-af50f23a68f2  rack1
+UN  10.244.1.10  41.14 KB   256     49.5%             42617acd-b16e-4ee3-9486-68a6743657b1  rack1
+UN  10.244.4.8   63.83 KB   256     48.3%             eeb73967-d1e6-43c1-bb54-512f8117d372  rack1
+```

examples/cassandra/v1beta3/cassandra-controller.yaml

@@ -0,0 +1,43 @@
+apiVersion: v1beta3
+kind: ReplicationController
+metadata: 
+  labels: 
+    name: cassandra
+  name: cassandra
+spec: 
+  replicas: 1
+  selector: 
+    name: cassandra
+  template: 
+    metadata: 
+      labels: 
+        name: cassandra
+    spec: 
+      containers: 
+        - command: 
+            - /run.sh
+          resources:
+            limits:
+              cpu: 1
+          env: 
+            - name: MAX_HEAP_SIZE
+              key: MAX_HEAP_SIZE
+              value: 512M
+            - name: HEAP_NEWSIZE
+              key: HEAP_NEWSIZE
+              value: 100M
+          image: "kubernetes/cassandra:v1"
+          name: cassandra
+          ports: 
+            - containerPort: 9042
+              name: cql
+            - containerPort: 9160
+              name: thrift
+          volumeMounts: 
+            - mountPath: /cassandra_data
+              name: data
+      volumes: 
+        - name: data
+          source: 
+            emptyDir: {}
+

examples/cassandra/v1beta3/cassandra-service.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1beta3
+kind: Service
+metadata: 
+  labels: 
+    name: cassandra
+  name: cassandra
+spec: 
+  containerPort: 9042
+  port: 9042
+  selector: 
+    name: cassandra

examples/hazelcast/v1beta3/README.md

@@ -58,5 +58,3 @@ $ kubectl log 16b2beab-94a1-11e4-8a8b-42010af0e23e hazelcast
 2014-12-24T01:21:23.036227250Z  Member [10.160.2.3]:5701
 2014-12-24T01:21:23.036227250Z }
 ```
-
-

examples/hazelcast/v1beta3/hazelcast-controller.yaml

@@ -14,7 +14,9 @@ spec:
         name: hazelcast
     spec: 
       containers: 
-        - cpu: 1000
+        - resources:
+            limits:
+              cpu: 1
           image: pires/hazelcast-k8s
           name: hazelcast
           ports: