kube-system metrics-server-74d7f54fdc-qr2v2 0/1 Pending

[Athanasios Garyfalos]

Hello everyone,

I am new to kubernetes and although that I have manages to launch my master (prime) and add workers to my cluster I can not figure it out how to make the UI to work.

Sample of pods:

$ kubectl get pods -A
NAMESPACE              NAME                                            READY   STATUS    RESTARTS   AGE
kube-system            calico-kube-controllers-547fb75957-qj4ll        1/1     Running   0          2d23h
kube-system            calico-node-7h4rj                               1/1     Running   0          2d23h
kube-system            coredns-7776bd96f-d5jbr                         1/1     Running   0          2d23h
kube-system            coredns-7776bd96f-kzw68                         1/1     Running   0          2d23h
kube-system            etcd-ap-rhoek8c.oneadr.net                      1/1     Running   6          2d23h
kube-system            kube-apiserver-ap-rhoek8c.oneadr.net            1/1     Running   6          2d23h
kube-system            kube-controller-manager-ap-rhoek8c.oneadr.net   1/1     Running   11         2d23h
kube-system            kube-proxy-r4v2t                                1/1     Running   0          2d23h
kube-system            kube-scheduler-ap-rhoek8c.oneadr.net            1/1     Running   11         2d23h
kube-system            metrics-server-74d7f54fdc-qr2v2                 0/1     Pending   0          2d23h
kubernetes-dashboard   dashboard-metrics-scraper-55b6f68dd5-svhdm      1/1     Running   2          2d23h
kubernetes-dashboard   kubernetes-dashboard-6d4f55d9d6-7bs47           1/1     Running   2          2d23h

[Athanasios Garyfalos]

Sorry for posting half the information as I accidentally pressed the shortcut.

So I followed the information from the official documentation kubernetes/dashboard and I created both files as documented creating-sample-user:

And launched them as:

kubectl apply -f dashboard-adminuser.yaml && kubectl apply -f cluster-role-binding.yaml

But I still get the error:

{
  "kind": "Status",
  "apiVersion": "v1",
  "metadata": {
    
  },
  "status": "Failure",
  "message": "services \"https:metrics-server:\" is forbidden: User \"system:anonymous\" cannot get resource \"services/proxy\" in API group \"\" in the namespace \"kube-system\"",
  "reason": "Forbidden",
  "details": {
    "name": "https:metrics-server:",
    "kind": "services"
  },
  "code": 403
}

What I have missed to set up?

Thank you in advance for your time and effort.

BR

[thano...@gmail.com]

I am very knew to kubernetes and I just started trying to launch the UI.

According to documentation kubernetes / dashboard I have created a sample user e.g.:

$ kubectl -n kubernetes-dashboard describe secret $(kubectl -n kubernetes-dashboard get secret | grep admin-user | awk '{print $1}')
Name:         admin-user-token-rkjlt
Namespace:    kubernetes-dashboard
Labels:       <none>
Annotations:  kubernetes.io/service-account.name: admin-user
              kubernetes.io/service-account.uid: 4a05a0c3-089d-426d-8f01-4e1f6eab3e36


Type:  kubernetes.io/service-account-token

Data
====
token:      <my_token>
ca.crt:     1025 bytes
namespace:  20 bytes

Based on the documentation creating sample user:

kubectl apply -f dashboard-adminuser.yaml

and also the cluster-role binding.

Yet when I am trying to access my dashboard:

https://<floating_ip>:6443/api/v1/namespaces/kube-system/services/https:metrics-server:/proxy

I get:

{
  "kind": "Status",
  "apiVersion": "v1",
  "metadata": {
    
  },
  "status": "Failure",
  "message": "services \"https:metrics-server:\" is forbidden: User \"system:anonymous\" cannot get resource \"services/proxy\" in API group \"\" in the namespace \"kube-system\"",
  "reason": "Forbidden",
  "details": {
    "name": "https:metrics-server:",
    "kind": "services"
  },
  "code": 403
}

I can see that the metrics-server container has not started yet but I am not able to understand as to what I have missed.

I have spend time online looking for questions / answers but I can not figure it out.

I am running on kubernetes 1.18.2:

$ kubectl version 
Client Version: version.Info{Major:"1", Minor:"18", GitVersion:"v1.18.2", GitCommit:"52c56ce7a8272c798dbc29846288d7cd9fbae032", GitTreeState:"clean", BuildDate:"2020-04-16T11:56:40Z", GoVersion:"go1.13.9", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"18", GitVersion:"v1.18.2", GitCommit:"52c56ce7a8272c798dbc29846288d7cd9fbae032", GitTreeState:"clean", BuildDate:"2020-04-16T11:48:36Z", GoVersion:"go1.13.9", Compiler:"gc", Platform:"linux/amd64"}

Sample of all pods together:

$ kubectl get pods -A
NAMESPACE              NAME                                            READY   STATUS    RESTARTS   AGE
kube-system            calico-kube-controllers-547fb75957-qj4ll        1/1     Running   0          2d20h
kube-system            calico-node-7h4rj                               1/1     Running   0          2d20h
kube-system            coredns-7776bd96f-d5jbr                         1/1     Running   0          2d20h
kube-system            coredns-7776bd96f-kzw68                         1/1     Running   0          2d20h
kube-system            etcd-ap-rhoek8c.oneadr.net                      1/1     Running   6          2d20h
kube-system            kube-apiserver-ap-rhoek8c.oneadr.net            1/1     Running   6          2d20h
kube-system            kube-controller-manager-ap-rhoek8c.oneadr.net   1/1     Running   11         2d20h
kube-system            kube-proxy-r4v2t                                1/1     Running   0          2d20h
kube-system            kube-scheduler-ap-rhoek8c.oneadr.net            1/1     Running   11         2d20h
kube-system            metrics-server-74d7f54fdc-qr2v2                 0/1     Pending   0          2d20h
kubernetes-dashboard   dashboard-metrics-scraper-55b6f68dd5-svhdm      1/1     Running   2          2d20h
kubernetes-dashboard   kubernetes-dashboard-6d4f55d9d6-7bs47           1/1     Running   2          2d20h

Any hits would be greatly appreciated.