Kubernetes集成Heapster监控

Heapster是容器集群监控和性能分析工具，天然的支持Kubernetes和CoreOS。
Kubernetes有个出名的监控agent—cAdvisor。在每个kubernetes Node上都会运行cAdvisor，它会收集本机以及容器的监控数据(cpu,memory,filesystem,network,uptime)。
在较新的版本中，K8S已经将cAdvisor功能集成到kubelet组件中。每个Node节点可以直接进行web访问。

1、镜像下载
[root@k8s_master ~]# docker pull ist0ne/heapster-grafana-amd64
[root@k8s_master ~]# docker pull ist0ne/heapster-amd64
[root@k8s_master ~]# docker pull ist0ne/heapster-influxdb-amd64:v1.1.1

2、下载Heapster，最新版本1.3.0
wget https://github.com/kubernetes/heapster/archive/v1.3.0.tar.gz
tar zxf v1.3.0.tar.gz

3、进入heapster-1.3.0/deploy/kube-config/influxdb/目录
[[root@k8s_master heapster-1.3.0]# ls -latr deploy/kube-config/influxdb/
total 24
-rw-rw-r-- 1 root root ?477 Mar 17 ?2017 influxdb-service.yaml
-rw-rw-r-- 1 root root ?493 Mar 17 ?2017 influxdb-deployment.yaml
-rw-rw-r-- 1 root root ?453 Mar 17 ?2017 heapster-service.yaml
-rw-rw-r-- 1 root root ?521 Mar 17 ?2017 heapster-deployment.yaml
-rw-rw-r-- 1 root root ?695 Mar 17 ?2017 grafana-service.yaml
-rw-rw-r-- 1 root root 1417 Mar 17 ?2017 grafana-deployment.yaml

4、修改配置文件对应的image：
grafana-deployment.yaml

apiVersion: extensions/v1beta1kind: Deploymentmetadata: ?name: monitoring-grafana ?namespace: kube-systemspec: ?replicas: 1 ?template: ???metadata: ?????labels: ???????task: monitoring ???????k8s-app: grafana ???spec: ?????containers: ?????- name: grafana ???????image: docker.io/ist0ne/heapster-grafana-amd64:latest ???????ports: ?????????- containerPort: 3000 ???????????protocol: TCP ???????volumeMounts: ???????- mountPath: /var ?????????name: grafana-storage ???????env: ???????- name: INFLUXDB_HOST ?????????value: monitoring-influxdb ???????- name: GRAFANA_PORT ?????????value: "3000" ?????????# The following env variables are required to make Grafana accessible via ?????????# the kubernetes api-server proxy. On production clusters, we recommend ?????????# removing these env variables, setup auth for grafana, and expose the grafana ?????????# service using a LoadBalancer or a public IP. ???????- name: GF_AUTH_BASIC_ENABLED ?????????value: "false" ???????- name: GF_AUTH_ANONYMOUS_ENABLED ?????????value: "true" ???????- name: GF_AUTH_ANONYMOUS_ORG_ROLE ?????????value: Admin ???????- name: GF_SERVER_ROOT_URL ?????????# If you‘re only using the API Server proxy, set this value instead: ?????????# value: /api/v1/proxy/namespaces/kube-system/services/monitoring-grafana/ ?????????value: / ?????volumes: ?????- name: grafana-storage ???????emptyDir: {}

heapster-deployment.yaml

apiVersion: extensions/v1beta1kind: Deploymentmetadata: ?name: heapster ?namespace: kube-systemspec: ?replicas: 1 ?template: ???metadata: ?????labels: ???????task: monitoring ???????k8s-app: heapster ???spec: ?????containers: ?????- name: heapster ???????image: docker.io/ist0ne/heapster-amd64:latest ???????imagePullPolicy: IfNotPresent ???????command: ???????- /heapster ???????- --source=kubernetes:http://192.168.3.216:8080?inClusterConfig=false ???????- --sink=influxdb:http://monitoring-influxdb:8086

influxdb-deployment.yaml

apiVersion: extensions/v1beta1kind: Deploymentmetadata: ?name: monitoring-influxdb ?namespace: kube-systemspec: ?replicas: 1 ?template: ???metadata: ?????labels: ???????task: monitoring ???????k8s-app: influxdb ???spec: ?????containers: ?????- name: influxdb ???????image: docker.io/ist0ne/heapster-influxdb-amd64:v1.1.1 ???????volumeMounts: ???????- mountPath: /data ?????????name: influxdb-storage ?????volumes: ?????- name: influxdb-storage ???????emptyDir: {}

启动服务
[root@k8s_master heapster-1.3.0]# kubectl create -f deploy/kube-config/influxdb/
删除服务
[root@k8s_master heapster-1.3.0]# kubectl delete -f deploy/kube-config/influxdb/

查看pod
[root@k8s_master ~]# kubectl get pods --all-namespaces

NAMESPACE ????NAME ???????????????????????????????????READY ????STATUS ???RESTARTS ??AGEdefault ??????busybox ????????????????????????????????1/1 ??????Running ??93 ????????3dkube-system ??heapster-4127054459-wzppn ??????????????1/1 ??????Running ??0 ?????????3dkube-system ??kube-dns-2074712928-dxv2q ??????????????4/4 ??????Running ??4 ?????????3dkube-system ??kubernetes-dashboard-3665076642-9z0jc ??1/1 ??????Running ??0 ?????????3dkube-system ??monitoring-grafana-597639858-tqpf2 ?????1/1 ??????Running ??0 ?????????3dkube-system ??monitoring-influxdb-3575671003-9rpkh ???1/1 ??????Running ??0 ?????????3dweb ??????????nginx-491251965-dp4xz ??????????????????1/1 ??????Running ??2 ?????????4dweb ??????????nginx-491251965-rjhhp ??????????????????1/1 ??????Running ??2 ?????????4d

打开浏览器http://192.168.3.216:8080/ui

Kubernetes集成Heapster监控

原文地址：http://blog.51cto.com/jonauil/2088665