heapster

Compute Resource Usage Analysis and Monitoring of Container Clusters

Run Heapster in a Kubernetes cluster with an InfluxDB backend and a Grafana UI

确保 cluster 和 kube-dns 工作正常

core@zodiac-01 ~/liuqs $ kubectl cluster-info
Kubernetes master is running at http://localhost:8080
KubeDNS is running at http://localhost:8080/api/v1/proxy/namespaces/kube-system/services/kube-dns

git clone or download source code from https://github.com/k8sp/heapster.git 并切换目录到 heapster/deploy

core@zodiac-01 ~/liuqs $ git clone https://github.com/k8sp/heapster.git && cd heapster/deploy
Cloning into 'heapster'...
remote: Counting objects: 59, done.
remote: Compressing objects: 100% (39/39), done.
remote: Total 59 (delta 19), reused 54 (delta 19), pack-reused 0
Unpacking objects: 100% (59/59), done.
Checking connectivity... done.
core@zodiac-01 ~/liuqs/heapster/deploy $ ls
kube-config  kube.sh

Start all of the pods and services

core@zodiac-01 ~/liuqs/heapster/deploy $ ./kube.sh start
heapster pods have been setup

创建后，执行会看 cluster-info 多了 Heapster 和 monitoring-grafana

core@zodiac-01 ~/liuqs/heapster/deploy $ kubectl cluster-info
Kubernetes master is running at http://localhost:8080
Heapster is running at http://localhost:8080/api/v1/proxy/namespaces/kube-system/services/heapster
KubeDNS is running at http://localhost:8080/api/v1/proxy/namespaces/kube-system/services/kube-dns
monitoring-grafana is running at http://localhost:8080/api/v1/proxy/namespaces/kube-system/services/monitoring-grafana

查询 pods 在运行

core@zodiac-01 ~/liuqs/heapster/deploy $ kubectl get pods --namespace=kube-system
NAME                                    READY     STATUS        RESTARTS   AGE
heapster-it1l0                          1/1       Running       0          4m
influxdb-grafana-zz3of                  2/2       Running       0          4m
kube-apiserver-10.10.10.201             1/1       Running       0          41m
kube-controller-manager-10.10.10.201    1/1       Running       0          41m
kube-dns-v11-9t185                      4/4       Running       0          31m
kube-proxy-10.10.10.201                 1/1       Running       0          41m
kube-proxy-10.10.10.202                 1/1       Running       0          41m
kube-proxy-10.10.10.203                 1/1       Running       0          41m
kube-proxy-10.10.10.204                 1/1       Running       0          41m
kube-proxy-10.10.10.205                 1/1       Running       0          41m
kube-proxy-10.10.10.206                 1/1       Running       0          41m
kube-proxy-10.10.10.207                 1/1       Running       0          41m
kube-proxy-10.10.10.208                 1/1       Running       0          41m
kube-proxy-10.10.10.209                 1/1       Running       0          42m
kube-proxy-10.10.10.210                 1/1       Running       0          41m
kube-proxy-10.10.10.211                 1/1       Running       0          41m
kube-scheduler-10.10.10.201             1/1       Running       0          41m
kubernetes-dashboard-1775839595-2us7o   1/1       Running       0          44s

查询 services 在运行

core@zodiac-01 ~/liuqs/heapster/deploy $ kubectl get services --namespace=kube-system
NAME                   CLUSTER-IP   EXTERNAL-IP   PORT(S)             AGE
heapster               10.3.0.115   <none>        80/TCP              4m
kube-dns               10.3.0.10    <none>        53/UDP,53/TCP       32m
kubernetes-dashboard   10.3.0.12    nodes         80/TCP              1m
monitoring-grafana     10.3.0.224   nodes         80/TCP              4m
monitoring-influxdb    10.3.0.214   <none>        8083/TCP,8086/TCP   4m

可以查询通过 describe services 看到 Grafana 的 NodePort 端口号，这个是在配置文件中指定，设置为32017（如果不指定 NodePort 端口，系统会随机出一个30000以后的端口）

core@zodiac-01 ~/liuqs/heapster $ kubectl describe services monitoring-grafana --namespace=kube-system
Name:                   monitoring-grafana
Namespace:              kube-system
Labels:                 kubernetes.io/cluster-service=true,kubernetes.io/name=monitoring-grafana
Selector:               name=influxGrafana
Type:                   NodePort
IP:                     10.3.0.177
Port:                   <unset> 80/TCP
NodePort:               <unset> 32017/TCP
Endpoints:              10.1.9.2:3000
Session Affinity:       None
No events.

通过 http://10.10.10.201:32017/ 可以访问 Grafana UI 界面，查看和配置监控数据

Delete Heapster in a Kubernetes cluster with an InfluxDB backend and a Grafana UI

删除 Heapster, InfluxDB, Grafana

core@zodiac-01 ~/liuqs $ ./kube.sh stop
heapster pods have been removed.

注意

kubernetes-retired/heapster#657