在Kubernetes上通过helm安装后如何访问Prometheus？答案

【问题标题】：How to access Prometheus after install it by helm on Kubernetes?在Kubernetes上通过helm安装后如何访问Prometheus？
【发布时间】：2018-04-23 09:24:49
【问题描述】：

在 Kubernetes 集群中安装 Prometheus 使用：

helm install stable/prometheus

成功了：

kubectl get pods
NAME                                                           READY     STATUS    RESTARTS   AGE
winsome-otter-prometheus-alertmanager-3488774855-mk4ph         2/2       Running   0          5m
winsome-otter-prometheus-kube-state-metrics-2907311046-ggnwx   1/1       Running   0          5m
winsome-otter-prometheus-node-exporter-dp9b3                   1/1       Running   0          5m
winsome-otter-prometheus-pushgateway-3103937292-fvw8m          1/1       Running   0          5m
winsome-otter-prometheus-server-2211167584-hjlp6               2/2       Running   0          5m

kubectl get service
NAME                                          TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)    AGE
kubernetes                                    ClusterIP   10.0.0.1     <none>        443/TCP    4d
winsome-otter-prometheus-alertmanager         ClusterIP   10.0.0.215   <none>        80/TCP     8m
winsome-otter-prometheus-kube-state-metrics   ClusterIP   None         <none>        80/TCP     8m
winsome-otter-prometheus-node-exporter        ClusterIP   None         <none>        9100/TCP   8m
winsome-otter-prometheus-pushgateway          ClusterIP   10.0.0.168   <none>        9091/TCP   8m
winsome-otter-prometheus-server               ClusterIP   10.0.0.62    <none>        80/TCP     8m

如何从浏览器访问它？使用哪个端口？怎么会知道？

【问题讨论】：

标签： docker kubernetes prometheus kubernetes-helm

【解决方案1】：

您需要先将 localhost 的 9090 端口转发到 prometheus pod：

export POD_NAME=$(kubectl get pods --namespace default -l "app=prometheus,component=server" -o jsonpath="{.items[0].metadata.name}")
kubectl --namespace default port-forward $POD_NAME 9090

现在你可以通过http://localhost:9090上的浏览器访问Prometheus

您也可以对alertmanager 执行相同操作：

export POD_NAME=$(kubectl get pods --namespace default -l "app=prometheus,component=alertmanager" -o jsonpath="{.items[0].metadata.name}")
kubectl --namespace default port-forward $POD_NAME 9093

现在可以通过http://localhost:9093上的浏览器使用Alertmanager

【讨论】：

【解决方案2】：

NOTES:                                                                                                                                                                                                  
The Prometheus server can be accessed via port 81 on the following DNS name from within your cluster:                                                                                                   
voting-prawn-prometheus-server.default.svc.cluster.local                                                                                                                                                


Get the Prometheus server URL by running these commands in the same shell:                                                                                                                              
 export POD_NAME=$(kubectl get pods --namespace default -l "app=prometheus,component=server" -o jsonpath="{.items[1].metadata.name}")                                                                        kubectl --namespace default port-forward $POD_NAME 9091                                                                                                                                                

The Prometheus alertmanager can be accessed via port 81 on the following DNS name from within your cluster:                                                                                             
voting-prawn-prometheus-alertmanager.default.svc.cluster.local                                                                                                                                          


Get the Alertmanager URL by running these commands in the same shell:                                                                                                                                   
 export POD_NAME=$(kubectl get pods --namespace default -l "app=prometheus,component=alertmanager" -o jsonpath="{.items[1].metadata.name}")                                                             
 kubectl --namespace default port-forward $POD_NAME 9094                                                                                                                                                


The Prometheus PushGateway can be accessed via port 9092 on the following DNS name from within your cluster:                                                                                            
voting-prawn-prometheus-pushgateway.default.svc.cluster.local                                                                                                                                           


Get the PushGateway URL by running these commands in the same shell:                                                                                                                                    
 export POD_NAME=$(kubectl get pods --namespace default -l "app=prometheus,component=pushgateway" -o jsonpath="{.items[1].metadata.name}")                                                              
 kubectl --namespace default port-forward $POD_NAME 9094                                                                                                                                                

For more information on running Prometheus, visit:                                                                                                                                                      
https://prometheus.io/

【讨论】：