Kubernetes: Error from server (ServiceUnavailable): the server is currently unable to handle the request (get pods.metrics.k8s.io)

Kubernetes: Error from server (ServiceUnavailable): the server is currently unable to handle the request 

When I am running command kubectl top pods  i was getting the below error :

root@k8s-master:~# kubectl top pods

Error from server (ServiceUnavailable): the server is currently unable to handle the request (get pods.metrics.k8s.io)

root@k8s-master:~# kubectl top nodes

Error from server (ServiceUnavailable): the server is currently unable to handle the request (get nodes.metrics.k8s.io)

Solution:

We need to add following paramaters in the "metrics-server.yaml" to solve this error. 

      hostNetwork: true

      dnsPolicy: ClusterFirst

metrics-server-for-metrics

Then do the "kubectl apply -f components.yaml" .

root@k8s-master:~# kubectl apply -f components.yaml

serviceaccount/metrics-server unchanged

clusterrole.rbac.authorization.k8s.io/system:aggregated-metrics-reader unchanged

clusterrole.rbac.authorization.k8s.io/system:metrics-server unchanged

rolebinding.rbac.authorization.k8s.io/metrics-server-auth-reader unchanged

clusterrolebinding.rbac.authorization.k8s.io/metrics-server:system:auth-delegator unchanged

clusterrolebinding.rbac.authorization.k8s.io/system:metrics-server unchanged

service/metrics-server unchanged

deployment.apps/metrics-server configured

apiservice.apiregistration.k8s.io/v1beta1.metrics.k8s.io unchanged

root@k8s-master:~#

Check the metrics-server pod Now:

root@k8s-master:~# kubectl get pod -l k8s-app=metrics-server -n kube-system

NAME                              READY   STATUS    RESTARTS   AGE

metrics-server-6ddfc9474c-8ttdp   1/1     Running   0          10m

root@k8s-master:~#

Check the metrics Now:

root@k8s-master:~# kubectl top pods

NAME       CPU(cores)   MEMORY(bytes)

dnsutils   0m           0Mi

root@k8s-master:~#

root@k8s-master:~# kubectl top nodes

NAME         CPU(cores)   CPU%   MEMORY(bytes)   MEMORY%

k8s-master   164m         8%     974Mi           34%

k8s-node1    43m          2%     908Mi           38%

k8s-node2    49m          2%     640Mi           26%

root@k8s-master:~#

check_metrics

Sharing Is caring