Kubernetes dashboard集成heapster

图形化展示度量指标的实现需要集成k8s的另外一个Addons组件： Heapster 。

Heapster原生支持K8s(v1.0.6及以后版本)和 CoreOS ，并且支持多种存储后端，比如： InfluxDB 、 ElasticSearch 、 Kafka 。

下载源包和images文件

下载地址https://github.com/kubernetes/heapster/archive/v1.2.0.zip,将包copy到kubernetes master节点上去.

打开deploy/kube-config/influxdb目录看到5个部署文件

参看这几个 yaml文件,预先把需要pull的image在nodes节点上准备好

docker pull kubernetes/heapster:canary docker pull kubernetes/heapster_influxdb:v0.5 docker pull gcr.io/google_containers/heapster_grafana:v2.6.0-2

运行创建(master)

然后在master节点上运行

kubectl create -f deploy/kube-config/influxdb/

通过kube get pods -n kube-system发现heapster-zm85m没有运行起来,基于下面命令查看日志

kubectl logs -f pods/heapster-zm85m -n kube-system

发现错误

编辑heapster-control.yaml文件,把其中source这行替换成本机的api server ip并添加?inClusterConfig=false

删除之前创建的pod重新create一遍.

    spec:

      containers:

      - name: heapster

        image: kubernetes/heapster:canary

        imagePullPolicy: Always

        command:

        - /heapster

        - --source=kubernetes:http://<api server ip>:<port>?inClusterConfig=false

        - --sink=influxdb:http://monitoring-influxdb:8086

最后的yaml文件:

[root@k8s-master influxdb]# cat heapster-controller.yaml

apiVersion: v1

kind: ReplicationController

metadata:

  labels:

    k8s-app: heapster

    name: heapster

    version: v6

  name: heapster

  namespace: kube-system

spec:

  replicas:

  selector:

    k8s-app: heapster

    version: v6

  template:

    metadata:

      labels:

        k8s-app: heapster

        version: v6

    spec:

      containers:

      - name: heapster

        image: kubernetes/heapster:canary

        command:

        - /heapster

        - --source=kubernetes:http://10.182.169.33:8080?inClusterConfig=false

        - --sink=influxdb:http://monitoring-influxdb:8086

# kubectl delete  -f deploy/kube-config/influxdb/ # kubectl create -f deploy/kube-config/influxdb/

再次打开kubernetes dashboard,就可以看到获取的监控数据啦