基于 Kubernetes v1.14.0 之heapster与influxdb部署

1、部署准备

说明：所有的容器组都运行在kube-system 命名空间
github 项目地址 https://github.com/kubernetes-retired/heapster.git
mkdir heapster
git clone https://github.com/kubernetes-retired/heapster.git
cd heapster/deploy/kube-config/influxdb

2、influxdb 部署

2.1、创建influxdb pvc 源项目没相关yaml

vi influxdb-pvc.yaml
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  # 挂载点名字influxdb-pvc
  name: influxdb-pvc
  namespace: kube-system
spec:
  accessModes:
    - ReadWriteMany
    # 存储类型名字动态pvc名字nfs-storage 这里使用nfs
  storageClassName: nfs-storage
  resources:
    requests:
      #硬盘大小
      storage: 50Gi 

2.2、创建influxdb Deployment

修改容器源  influxdb
添加指定节点运行
      nodeSelector:
        dashboard: kubernetes-dashboard #指定节点运行
vi influxdb.yaml
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: monitoring-influxdb
  namespace: kube-system
spec:
  replicas: 1
  template:
    metadata:
      labels:
        task: monitoring
        k8s-app: influxdb
    spec:
      nodeSelector:
        dashboard: kubernetes-dashboard
      containers:
      - name: influxdb
        image: influxdb
        volumeMounts:
        - mountPath: /var/lib/influxdb
          name: influxdb-storage
      volumes:
      - name: influxdb-storage
        persistentVolumeClaim:
          claimName: influxdb-pvc
---
apiVersion: v1
kind: Service
metadata:
  labels:
    task: monitoring
    # For use as a Cluster add-on (https://github.com/kubernetes/kubernetes/tree/master/cluster/addons)
    # If you are NOT using this as an addon, you should comment out this line.
    kubernetes.io/cluster-service: 'true'
    kubernetes.io/name: monitoring-influxdb
  name: monitoring-influxdb
  namespace: kube-system
spec:
  ports:
  - port: 8086
    targetPort: 8086
  selector:
    k8s-app: influxdb

2.3 执行生成yaml 文件

kubectl apply -f   influxdb-pvc.yaml
kubectl apply -f  influxdb.yaml
kubectl get pod -n  kube-system -o wide | grep influxdb
[root@jenkins kubernetes]# kubectl get pod -n  kube-system -o wide | grep influxdb
monitoring-influxdb-75678b664f-z9zck        1/1     Running   0          21d   10.65.3.155   nginx-2              
http://10.65.3.155:8086/
返回404 证明访问正常
[root@jenkins kubernetes]# kubectl get service -n  kube-system | grep influxdb
monitoring-influxdb    ClusterIP      10.64.39.166            8086/TCP                 47d
http://10.64.39.166:8086/
同样返回404 证明服务正常
这里只做服务是否正常运行验证

3、heapster 部署

3.1、 创建clusterrole

vi heapster-clusterrole.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: "true"
  labels:
    kubernetes.io/bootstrapping: rbac-defaults
  name: system:heapster
rules:
- apiGroups:
  - ""
  resources:
  - events
  - namespaces
  - nodes
  - pods
  - nodes/stats
  verbs:
  - create
  - get
  - list
  - watch
- apiGroups:
  - extensions
  resources:
  - deployments
  verbs:
  - get
  - list
  - watch

3.2 创建ClusterRoleBinding

vi heapster-rbac.yaml
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: heapster
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:heapster
subjects:
- kind: ServiceAccount
  name: heapster
  namespace: kube-system

3.3、heapster Deployment 合集

修改  - --source=kubernetes:https://kubernetes.default
--source=kubernetes:https://kubernetes.default?kubeletHttps=true&kubeletPort=10250&insecure=true
修改容器源 juestnow/heapster-amd64:v1.5.4
      nodeSelector:
        dashboard: kubernetes-dashboard #指定节点运行
vi heapster.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
  name: heapster
  namespace: kube-system
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: heapster
  namespace: kube-system
spec:
  replicas: 1
  template:
    metadata:
      labels:
        task: monitoring
        k8s-app: heapster
    spec:
      serviceAccountName: heapster
      nodeSelector:
        dashboard: kubernetes-dashboard
      containers:
      - name: heapster
        image: juestnow/heapster-amd64:v1.5.4
        imagePullPolicy: IfNotPresent
        command:
        - /heapster
        - --source=kubernetes:https://kubernetes.default?kubeletHttps=true&kubeletPort=10250&insecure=true
        - --sink=influxdb:http://monitoring-influxdb:8086
---
apiVersion: v1
kind: Service
metadata:
  labels:
    task: monitoring
    # For use as a Cluster add-on (https://github.com/kubernetes/kubernetes/tree/master/cluster/addons)
    # If you are NOT using this as an addon, you should comment out this line.
    kubernetes.io/cluster-service: 'true'
    kubernetes.io/name: Heapster
  name: heapster
  namespace: kube-system
spec:
  type: NodePort
  ports:
  - port: 80
    targetPort: 8082
  selector:
    k8s-app: heapster

3.4 执行生成yaml 文件

kubectl apply -f  .

3.5 验证heapster 状态

[root@jenkins kubernetes]#  kubectl get pod -n  kube-system | grep heapster
heapster-6f76dc9d7-vzfz8                    1/1     Running   0          21d
[root@jenkins kubernetes]# kubectl get service -n  kube-system | grep heapster
heapster               NodePort       10.64.248.238           80:45389/TCP             47d
http://10.64.248.238/
返回404 正常
等待一段时间打开:kubernetes-dashboard 查看容器cpu内存使用由图表

如果出现图表证明heapster 安装 成功

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