Question
How to run metrics-server in managed k8s?
- Posted November 3, 2020
- DigitalOcean Managed KubernetesKubernetesDigitalOcean 1-Click Apps Marketplace
I spent about 3 days with this issue :(
- I tried to install metrcis-server(https://github.com/kubernetes-sigs/metrics-server) on my own cluster. Of course I tried to turn on the option of prefer-internalIP option, which mentioned in the article(https://www.digitalocean.com/community/tutorials/how-to-autoscale-your-workloads-on-digitalocean-kubernetes#step-3-—-installing-metrics-server)
- (Because 1 failed) I tried to install metrics-server through marketplace one(https://cloud.digitalocean.com/marketplace/5d83d4f9cc248c518b58a38c?i=654b99)
- Now I’m writing this…
No matter what I try to install metrics-server on my cluster, I can’t see CPU/memory usage of my pods. CPU/memory usage of my nodes is fine, but pods.
metric-server log says follwing (for every deployed pods)
1 reststorage.go:160] unable to fetch pod metrics for pod, ...: no metrics known for pod
My cluster runs
- 1.19.3-do.1 (most recent one)
- metrics-server 0.3.7(docker.io/bitnami/metrics-server:0.3.7-debian-10-r89)
kubectl top nodes shows
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
pool-mypoolinfoblahb 130m 6% 1323Mi 42%
pool-mypoolinfoblahb 79m 3% 806Mi 25%
kubectl top pods shows
W1103 16:56:02.901596 25473 top_pod.go:265] Metrics not available for pod default/my-pod-info-blahblah, age: 8m1.901588s
error: Metrics not available for pod default/my-pod-info-blahblah, age: 8m1.901588s
Somebody please help me
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to whom it may concern, DO team would release new DO version to resolve the issue (yay!)
link: https://github.com/digitalocean/DOKS/issues/2#issuecomment-721544306
I ran into a similar issue on DOKS 1.20.2. I was deploying using the bitnami metrics server helm chart. I had to set the command arg kubelet-preferred-address-types=InternalIP and apiService.create=true because the api-service isn’t created already by DO.
For reference: https://github.com/bitnami/charts/tree/master/bitnami/metrics-server#parameters
there are more people suffers from … https://github.com/digitalocean/DOKS/issues/2
facing the same issue on a newly deployed cluster and the solutions mentioned on the github issue are not working.