如何使用Prometheus显示群集的总计CPU，RAM，磁盘I / O使用情况？
[英]How to show aggregated CPU, RAM, Disk I/O usage of a cluster using Prometheus?
问题描述
I have 3 servers. 
我有3台服务器。 I am using Prometheus with Node exporter and for visualizing Prometheus data I am using Grafana. 我正在使用带有节点导出器的Prometheus，并且使用Grafana来可视化Prometheus数据。 The Node Exporter Full (1860) dashboard can only shows CPU, RAM, Disk I/O usages for each server individually. Node Exporter Full（1860）仪表板只能分别显示每个服务器的CPU，RAM，磁盘I / O使用情况。 I want to get overall usages, for example, I want to get the whole cluster's (sarver1 + sarver2 + sarver3) aggregated CPU, RAM, and Disk I/O usages. 我想要获得总体使用情况，例如，我想要获得整个集群的（sarver1 + sarver2 + sarver3）聚合的CPU，RAM和磁盘I / O使用情况。 What queries should I use to get the total cluster resources utilization? 我应该使用哪些查询来获取群集资源的总利用率？
1 个解决方案
解决方案1
0 2019-11-27 11:22:21
Suppose you have the following query to get the CPU usage: 假设您具有以下查询来获取CPU使用率：
100 - (avg(irate(node_cpu_seconds_total{instance="server1",mode="idle"}[5m])) * 100)
To get the overall of several servers you need to change the query to the following: 要获得几台服务器的总体信息，您需要将查询更改为以下内容：
100 - (avg(irate(node_cpu_seconds_total{instance=~"server1|server2|server3",mode="idle"}[5m])) * 100)
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