To see the pods that use the most cpu and memory you can use the kubectl top command but it doesn’t sort yet and is also missing the quota limits and requests per pod. You only see the current usage:
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$ kubectl top pod --all-namespaces
NAMESPACE NAME CPU(cores) MEMORY(bytes)
kube-system kube-proxy-gke-rel3170-
default
-pool-3459fe6a 2m 12Mi
kube-system kube-proxy-gke-rel3170-
default
-pool-3459fe6a 2m 12Mi
kube-system fluentd-gcp-v2.
0.9
-5t9q6 8m 85Mi
kube-system fluentd-gcp-v2.
0.9
-pd4s9 10m 84Mi
kube-system kube-dns-
3468831164
-v2gqr 1m 26Mi
kube-system event-exporter-v0.
1.7
-
1642279337
-180db 0m 13Mi
kube-system kube-proxy-gke-rel3170-
default
-pool-3459fe6a 1m 12Mi
kube-system l7-
default
-backend-
3623108927
-tjm9z 0m 1Mi
kube-system kube-dns-
3468831164
-cln0p 1m 25Mi
kube-system fluentd-gcp-v2.
0.9
-sj3rh 9m 84Mi
kube-system kube-dns-autoscaler-
244676396
-00btn 0m 7Mi
kube-system kubernetes-dashboard-
1265873680
-8prcm 0m 18Mi
kube-system heapster-v1.
4.3
-
3980146296
-33tmw 0m 42Mi
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Because of these limitations, but also because you want to gather and store this resource usage information on an ongoing basis, a monitoring tool comes in handy. This allows you to analyze resource usage both in real time and historically, and also lets you alert on capacity bottlenecks.
实际示例：
[root@]:~# kubectl top pod -n taobao-spider NAME CPU(cores) MEMORY(bytes) app-1375507206-spider-new-v1-0-55f8cbb5cb-29wnz 0m 76Mi app-1375507206-spider-new-v1-0-55f8cbb5cb-2s2qj 0m 69Mi app-1375507206-spider-new-v1-0-55f8cbb5cb-6q9w7 0m 71Mi app-1375507206-spider-new-v1-0-55f8cbb5cb-7s59f 0m 74Mi app-1375507206-spider-new-v1-0-55f8cbb5cb-96lsb 0m 73Mi app-1375507206-spider-new-v1-0-55f8cbb5cb-fdglr 0m 71Mi app-1375507206-spider-new-v1-0-55f8cbb5cb-h52th 0m 71Mi app-1375507206-spider-new-v1-0-55f8cbb5cb-j26cx 0m 73Mi app-1375507206-spider-new-v1-0-55f8cbb5cb-k95gz 0m 71Mi app-1375507206-spider-new-v1-0-55f8cbb5cb-pv9w7 0m 75Mi app-1375507206-spider-new-v1-0-55f8cbb5cb-r9mtz 0m 69Mi app-1375507206-spider-new-v1-0-55f8cbb5cb-vq79m 0m 75Mi app-1375507206-spider-new-v1-0-55f8cbb5cb-xzzbs 0m 70Mi app-1375507206-spider-new-v1-0-55f8cbb5cb-zhjdb 0m 80Mi app-183215290-spider-v1-0-76f57788d-8jfqm 93m 80Mi app-2492659469-spider-new-v1-0-7fbf4d7c7d-vf552 20m 61Mi app-3437963581-spider-v1-0-66cd9d7699-5z2vk 74m 108Mi app-3437963581-spider-v1-0-66cd9d7699-79bwf 54m 75Mi