接上篇文章,在已经部署好Kubernetes的基础上部署kubernetes-dashboard,它是官方提供的用户管理Kubernets集群可视化工具;部署dashboard其实和在kubernets部署其他的应用一样,创建dashboard所需的Replication Controller、Service服务即可;
注意Kubernets的Overlay Network要正常工作,每个节点都已经启动Flannel,并且docker启动时配置了Flannel提供的子网,或使用其他方式保证Container之间的连通,否则dashboard将无法正常工作;
使用默认的Namespace也是可以得,因为dashboard算是属于系统应用所以这里使用Namespace把dashboard与其他App进行隔离,建议线上正式的Kubernetes环境都要使用Namespace;创建kube-namespace.yaml文件,内容如下:
apiVersion: v1 kind: Namespace metadata: name: kube-system
Replication Controller用于保证pod期望状态与当前状态一致,还可对pod数量弹性伸缩,这里主要是保证dashboard的正常运行;创建kube-dashboard-rc.yaml文件:内容如下:
apiVersion: v1 kind: ReplicationController metadata: # Keep the name in sync with image version and # gce/coreos/kube-manifests/addons/dashboard counterparts name: kubernetes-dashboard-latest namespace: kube-system labels: k8s-app: kubernetes-dashboard version: latest kubernetes.io/cluster-service: "true" spec: replicas: 1 selector: k8s-app: kubernetes-dashboard template: metadata: labels: k8s-app: kubernetes-dashboard version: latest kubernetes.io/cluster-service: "true" spec: containers: - name: kubernetes-dashboard image: 192.168.2.144:5000/kkubernetes-dashboard-amd64 resources: # keep request = limit to keep this container in guaranteed class limits: cpu: 100m memory: 50Mi requests: cpu: 100m memory: 50Mi ports: - containerPort: 9090 args: - --apiserver-host=http://192.168.2.143:8080 livenessProbe: httpGet: path: / port: 9090 initialDelaySeconds: 30 timeoutSeconds: 30
由于kubernetes-dashboard-amd64如要被墙,这里下了index.alauda.cn/googlecontainer/kubernetes-dashboard-amd64放在本地私有仓库,使用了本地私有长裤镜像库kubernetes-dashboard-amd64;还要注意别忘了配置apiserver-host否则dashboard将无法连接到kubernets集群;
service用于配置dashboard的label selector;创建kube-dashboard-svc.yaml文件,内容如下:
apiVersion: v1 kind: Service metadata: name: kubernetes-dashboard namespace: kube-system labels: k8s-app: kubernetes-dashboard kubernetes.io/cluster-service: "true" spec: selector: k8s-app: kubernetes-dashboard ports: - port: 80 targetPort: 9090
kubectl -s 192.168.2.143:8080 create -f namespace.yaml
kubectl -s 192.168.2.143:8080 create -f kube-dashboard-rc.yaml
kubectl -s 192.168.2.143:8080 create -f kube-dashboard-svc.yaml
Kubernetes dashboard访问地址:http://192.168.2.143:8080/ui,注意这里的地址是master节点的地址;
参考资料:
http://kubernetes.io/docs/user-guide/