Kubernetes - Monitoring pod IO

Question

I would like to monitor the IO which my pod is doing. Using commands like 'kubectl top pods/nodes', i can monitor CPU & Memory. But I am not sure how to monitor IO which my pod is doing, especially disk IO.

Any suggestions ?

you can query kubelet stats using the REST apis refer https://stackoverflow.com/questions/58403810/how-to-get-pod-cpu-and-memory-usage-from-metrics-server — Sai Teja Pakalapati, Mar 05 '20 at 14:55
you can install helm chart for prometheus and grafana, it will give you required metrics — Tushar Mahajan, Mar 05 '20 at 15:09

score 1 · Answer 1 · answered Mar 05 '20 at 15:23

1

Since you already used kubectl top command I assume you have metrics server. In order to have more advanced monitoring solution I would suggest to use cAdvisor, Prometheus or Elasticsearch.

For getting started with Prometheus you can check this article.

Elastic search has System diskio and Docker diskio metrics set. You can easily deploy it using helm chart.

Part 3 of the series about kubernetes monitoring is especially focused on monitoring container metrics using cAdvisor. Allthough it is worth checking whole series.

Let me know if this helps.

answered Mar 05 '20 at 15:23

acid_fuji

6,287
7
22

Most of them talk about CPU & Memory resource but not IO .. why ? – SunilS Mar 05 '20 at 16:13
With cAdvisor you could monitor the disk as showed in the link above. Have you tried? Or need another metric that is no exposed by cAdvisor? – Mr.KoopaKiller Mar 06 '20 at 13:32

Kubernetes - Monitoring pod IO

1 Answers1