When I try to use kubectl top nodes I get this error:
Error from server (NotFound): the server could not find the requested resource (get services http:heapster:)But heapster is deprecated and I'm using kubernetes 1.11. I installed metrics-server and I still get the same error, when I try to check metrics-server's logs I see this error:
E1019 12:33:55.621691 1 manager.go:102] unable to fully collect metrics: [unable to fully scrape metrics from source kubelet_summary:elegant-ardinghelli-ei3: unable to fetch metrics from Kubelet elegant-ardinghelli-ei3 (elegant-ardinghelli-ei3):
Get https://elegant-ardinghelli-ei3:10250/stats/summary/: dial tcp: lookup elegant-ardinghelli-ei3 on 10.245.0.10:53: no such host, unable to fully scrape metrics from source kubelet_summary:elegant-ardinghelli-aab: unable to fetch metrics from Kubelet elegant-ardinghelli-aab (elegant-ardinghelli-aab):
Get https://elegant-ardinghelli-aab:10250/stats/summary/: dial tcp: lookup elegant-ardinghelli-aab on 10.245.0.10:53: no such host, unable to fully scrape metrics from source kubelet_summary:elegant-ardinghelli-e4z: unable to fetch metrics from Kubelet elegant-ardinghelli-e4z (elegant-ardinghelli-e4z):
Get https://elegant-ardinghelli-e4z:10250/stats/summary/: dial tcp: lookup elegant-ardinghelli-e4z on 10.245.0.10:53: no such host, unable to fully scrape metrics from source kubelet_summary:elegant-ardinghelli-e41: unable to fetch metrics from Kubelet elegant-ardinghelli-e41 (elegant-ardinghelli-e41):
Get https://elegant-ardinghelli-e41:10250/stats/summary/: dial tcp: lookup elegant-ardinghelli-e41 on 10.245.0.10:53: no such host, unable to fully scrape metrics from source kubelet_summary:elegant-ardinghelli-ein: unable to fetch metrics from Kubelet elegant-ardinghelli-ein (elegant-ardinghelli-ein):
Get https://elegant-ardinghelli-ein:10250/stats/summary/: dial tcp: lookup elegant-ardinghelli-ein on 10.245.0.10:53: no such host, unable to fully scrape metrics from source kubelet_summary:elegant-ardinghelli-aar: unable to fetch metrics from Kubelet elegant-ardinghelli-aar (elegant-ardinghelli-aar):
Get https://elegant-ardinghelli-aar:10250/stats/summary/: dial tcp: lookup elegant-ardinghelli-aar on 10.245.0.10:53: no such host, unable to fully scrape metrics from source kubelet_summary:elegant-ardinghelli-aaj: unable to fetch metrics from Kubelet elegant-ardinghelli-aaj (elegant-ardinghelli-aaj):
Get https://elegant-ardinghelli-aaj:10250/stats/summary/: dial tcp: lookup elegant-ardinghelli-aaj on 10.245.0.10:53: no such host, unable to fully scrape metrics from source kubelet_summary:elegant-ardinghelli-e49: unable to fetch metrics from Kubelet elegant-ardinghelli-e49 (elegant-ardinghelli-e49):
Get https://elegant-ardinghelli-e49:10250/stats/summary/: dial tcp: lookup elegant-ardinghelli-e49 on 10.245.0.10:53: no such host]It is reported here.
Github Issues:
This PR implements support for the kubectl top commands to use the metrics-server as an aggregated API, instead of requesting the metrics from heapster directly. If the metrics.k8s.io API is not served by the apiserver, then this still falls back to the previous behavior.
Merged in https://github.com/kubernetes/kubernetes/pull/56206
Maybe fixed in 1.12 or scheduled for next version.