如何在Kubernetes中获取容器的磁盘使用情况(不使用docker命令)? [英] How to get container's disk usage in Kubernetes (without docker command)?

问题描述

我有一个Kubernetes集群，想知道我的容器使用多少磁盘空间.我说的不是挂载的卷.

I have a Kubernetes Cluster and want to know how much disk space my containers use. I am not talking about mounted Volumes.

我可以通过使用docker system df -v或docker ps -s之类的docker命令来获取此信息，但是我不想连接到每个工作节点.

I can get this information by using docker commands like docker system df -v or docker ps -s, but I don't want to connect to every single worker node.

是否可以通过kubectl获取容器的磁盘使用率，还是可以从kubelet指标中获取此信息?

Is there a way to get a container's disk usage via kubectl or are there kubelet metrics where I can get this information from?

推荐答案

是的，但当前不适用于kubectl，您可以从 cAdvisor 指标>端点.

Yes, but currently not with kubectl, you can get metrics from the kubelet, either through the kube-apiserver (proxied) or directly calling the kubelet HTTP(s) server endpoint (default port 10250). Disk metrics are generally available on the /stats/summary endpoint and you can also find some cAdvisor metrics on the /metrics/cavisor endpoint.

例如，要获取通过不记名令牌可以是绑定到ClusterRole的服务帐户令牌，如下所示:

The Bearer token can be a service account token tied to a ClusterRole like this:

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  annotations:
  name: myrole
rules:
- apiGroups:
  - ""
  resources:
  - nodes
  - nodes/proxy
  verbs:
  - get
  - list
  - watch
- nonResourceURLs:
  - /metrics
  - /api/*
  verbs:
  - get

这篇关于如何在Kubernetes中获取容器的磁盘使用情况(不使用docker命令)?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！