v1beta3 api yaml files
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## Cloud Native Deployments of Cassandra using Kubernetes v1beta3 api
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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.
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This document also attempts to describe the core components of Kubernetes, _Pods_, _Services_ and _Replication Controllers_.
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### Prerequisites
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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.
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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:
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```sh
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$sudo sed -i 's|KUBE_API_ARGS="|KUBE_API_ARGS="--runtime_config=api/v1beta3|' /etc/kubernetes/apiserver
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```
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### quickstart
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For those of you who are impatient, here is the summary of the commands we ran in this tutorial.
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```sh
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# create a single cassandra node
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kubectl create -f cassandra-controller.yaml
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# create a service to track all cassandra nodes
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kubectl create -f cassandra-service.yaml
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$ docker exec <cassandra-container-id> nodetool status
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Datacenter: datacenter1
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=======================
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Status=Up/Down
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|/ State=Normal/Leaving/Joining/Moving
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-- Address Load Tokens Owns (effective) Host ID Rack
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UN 10.244.3.29 72.07 KB 256 100.0% f736f0b5-bd1f-46f1-9b9d-7e8f22f37c9e rack1
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# scale up to 2 nodes
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kubectl resize rc cassandra --replicas=2
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# validate the cluster
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$ docker exec <cassandra-container-id> nodetool status
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Datacenter: datacenter1
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=======================
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Status=Up/Down
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|/ State=Normal/Leaving/Joining/Moving
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-- Address Load Tokens Owns (effective) Host ID Rack
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UN 10.244.3.29 72.07 KB 256 100.0% f736f0b5-bd1f-46f1-9b9d-7e8f22f37c9e rack1
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UN 10.244.1.10 41.14 KB 256 100.0% 42617acd-b16e-4ee3-9486-68a6743657b1 rack1
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# scale up to 4 nodes
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kubectl resize rc cassandra --replicas=4
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# validate the cluster
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$ docker exec <cassandra-container-id> nodetool status
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Datacenter: datacenter1
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=======================
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Status=Up/Down
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|/ State=Normal/Leaving/Joining/Moving
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-- Address Load Tokens Owns (effective) Host ID Rack
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UN 10.244.3.29 72.07 KB 256 49.5% f736f0b5-bd1f-46f1-9b9d-7e8f22f37c9e rack1
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UN 10.244.2.14 61.62 KB 256 52.6% 3e9981a6-6919-42c4-b2b8-af50f23a68f2 rack1
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UN 10.244.1.10 41.14 KB 256 49.5% 42617acd-b16e-4ee3-9486-68a6743657b1 rack1
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UN 10.244.4.8 63.83 KB 256 48.3% eeb73967-d1e6-43c1-bb54-512f8117d372 rack1
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```
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apiVersion: v1beta3
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kind: ReplicationController
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metadata:
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labels:
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name: cassandra
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name: cassandra
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spec:
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replicas: 1
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selector:
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name: cassandra
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template:
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metadata:
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labels:
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name: cassandra
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spec:
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containers:
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- command:
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- /run.sh
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resources:
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limits:
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cpu: 1000m
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env:
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- name: MAX_HEAP_SIZE
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key: MAX_HEAP_SIZE
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value: 512M
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- name: HEAP_NEWSIZE
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key: HEAP_NEWSIZE
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value: 100M
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image: "kubernetes/cassandra:v1"
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name: cassandra
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ports:
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- containerPort: 9042
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name: cql
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- containerPort: 9160
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name: thrift
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volumeMounts:
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- mountPath: /cassandra_data
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name: data
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volumes:
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- name: data
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source:
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emptyDir: {}
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apiVersion: v1beta3
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kind: Service
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metadata:
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labels:
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name: cassandra
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name: cassandra
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spec:
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containerPort: 9042
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port: 9042
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selector:
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name: cassandra
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@ -58,5 +58,3 @@ $ kubectl log 16b2beab-94a1-11e4-8a8b-42010af0e23e hazelcast
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2014-12-24T01:21:23.036227250Z Member [10.160.2.3]:5701
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2014-12-24T01:21:23.036227250Z }
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```
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@ -14,7 +14,9 @@ spec:
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name: hazelcast
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spec:
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containers:
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- cpu: 1000
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- resources:
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limits:
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cpu: 1000m
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image: pires/hazelcast-k8s
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name: hazelcast
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ports:
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