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MicroK8s : Enable Dashboard
2022/09/02
 
To enable Dashboard on MicroK8s Cluster, Configure like follows.
[1] Enable Dashboard add-on on primary Node.
root@dlp:~#
microk8s enable dashboard dns

Infer repository core for addon dashboard
Infer repository core for addon dns
Enabling Kubernetes Dashboard
Infer repository core for addon metrics-server
Enabling Metrics-Server
serviceaccount/metrics-server created
clusterrole.rbac.authorization.k8s.io/system:aggregated-metrics-reader created
clusterrole.rbac.authorization.k8s.io/system:metrics-server created
rolebinding.rbac.authorization.k8s.io/metrics-server-auth-reader created
clusterrolebinding.rbac.authorization.k8s.io/metrics-server:system:auth-delegator created
clusterrolebinding.rbac.authorization.k8s.io/system:metrics-server created
service/metrics-server created
deployment.apps/metrics-server created
apiservice.apiregistration.k8s.io/v1beta1.metrics.k8s.io created
clusterrolebinding.rbac.authorization.k8s.io/microk8s-admin created
Adding argument --authentication-token-webhook to nodes.
Configuring node 10.0.0.51
Restarting nodes.
Configuring node 10.0.0.51
Metrics-Server is enabled
Applying manifest
serviceaccount/kubernetes-dashboard created
service/kubernetes-dashboard created
secret/kubernetes-dashboard-certs created
secret/kubernetes-dashboard-csrf created
secret/kubernetes-dashboard-key-holder created
configmap/kubernetes-dashboard-settings created
role.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrole.rbac.authorization.k8s.io/kubernetes-dashboard created
rolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
deployment.apps/kubernetes-dashboard created
service/dashboard-metrics-scraper created
deployment.apps/dashboard-metrics-scraper created

If RBAC is not enabled access the dashboard by creating a default token with:

microk8s kubectl create token -n kube-system default --duration=8544h

Use this token in the https login UI of the kubernetes-dashboard service.

In an RBAC enabled setup (microk8s enable RBAC) you need to create a user with restricted
permissions as shown in:
https://github.com/kubernetes/dashboard/blob/master/docs/user/access-control/creating-sample-user.md

Enabling DNS
Applying manifest
serviceaccount/coredns created
configmap/coredns created
deployment.apps/coredns created
service/kube-dns created
clusterrole.rbac.authorization.k8s.io/coredns created
clusterrolebinding.rbac.authorization.k8s.io/coredns created
Restarting kubelet
Adding argument --cluster-domain to nodes.
Configuring node 10.0.0.51
Adding argument --cluster-dns to nodes.
Configuring node 10.0.0.51
Restarting nodes.
Configuring node 10.0.0.51
DNS is enabled

root@dlp:~#
microk8s kubectl get services -n kube-system

NAME                        TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                  AGE
metrics-server              ClusterIP   10.152.183.247   <none>        443/TCP                  64s
kubernetes-dashboard        ClusterIP   10.152.183.137   <none>        443/TCP                  56s
dashboard-metrics-scraper   ClusterIP   10.152.183.89    <none>        8000/TCP                 56s
kube-dns                    ClusterIP   10.152.183.10    <none>        53/UDP,53/TCP,9153/TCP   55s

# confirm security token

root@dlp:~#
microk8s config | grep token

    token: MUV6TU54VXlQR2JJRDFadU9lNXlQbHlpaVhEQ1o4MXNhRjQreVEvakNRRT0K

# set port-forwarding to enable external access if you need

root@dlp:~#
microk8s kubectl port-forward -n kube-system service/kubernetes-dashboard --address 0.0.0.0 10443:443

Forwarding from 0.0.0.0:10443 -> 8443
[2] Access to [https://(MicroK8s primary node's Hostname or IP address):10443/] with an web browser on any Client computer in local network. Copy and paste the security token you confirmed on [1] to [Enter token] section and Click [Sing In] button.
[3] After authentication successfully passed, MicroK8s Cluster Dashboard is displayed.
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