Accessing Kubernetes dashboard on Compute instance in Oracle Cloud - kubernetes

Question

I have deployed kubernetes and the dashboard onto a compute instance in Oracle cloud.
I have the dashboard installed with grafana onto my compute instance.
NAME READY STATUS RESTARTS AGE
po/etcd-mst-instance1 1/1 Running 0 1h
po/heapster-7856f6b566-rkfx5 1/1 Running 0 1h
po/kube-apiserver-mst-instance1 1/1 Running 0 1h
po/kube-controller-manager-mst-instance1 1/1 Running 0 1h
po/kube-dns-d879d6bcb-b9zjf 3/3 Running 0 1h
po/kube-flannel-ds-lgklw 1/1 Running 0 1h
po/kube-proxy-g6vxm 1/1 Running 0 1h
po/kube-scheduler-mst-instance1 1/1 Running 0 1h
po/kubernetes-dashboard-dd5c889c-6vphq 1/1 Running 0 1h
po/monitoring-grafana-5d4d76cd65-p7n5l 1/1 Running 0 1h
po/monitoring-influxdb-787479f6fd-8qkg2 1/1 Running 0 1h
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
svc/heapster ClusterIP 10.98.200.184 <none> 80/TCP 1h
svc/kube-dns ClusterIP 10.96.0.10 <none> 53/UDP,53/TCP 1h
svc/kubernetes-dashboard ClusterIP 10.107.155.3 <none> 443/TCP 1h
svc/monitoring-grafana ClusterIP 10.96.130.226 <none> 80/TCP 1h
svc/monitoring-influxdb ClusterIP 10.105.163.213 <none> 8086/TCP 1h
I am trying to access the dashboard via SSH and did the below in my local computer:
ssh -L localhost:8001:172.31.4.117:6443 opc#xxxxxxxx
However, it tells me this error :
Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
Im not sure what is the best way to access the dashboard. I am new at k8s and still at a beginner stage so would want to consult as I have also tried doing kubectl proxy on my local computer but when i try to access 127.0.0.1 it gives me this error:
I0804 17:01:28.902675 77193 logs.go:41] http: proxy error: dial tcp [::1]:8080: connect: connection refused
Would really appreciaate any help and thank you

Answer 1

Kubernetes includes a web dashboard that can be used for basic management operations.
Once Dashboard is installed on your Kubernetes cluster, it can be accessed in a few different ways.
I prefer to use the kubectl proxy from the command line to access Kubernetes Dashboard.
Kubectl does for you: authentication with API server and forward traffic between
your cluster (with Dashboard deployed inside) and your web browser.
Please notice that kubectl does it for a local running web browser, as it is running on
a localhost.
From the command line:
kubectl proxy
Next, start browsing this address:
http://localhost:8001/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/
In case Kubernetes API server is exposed and accessible, you may try:
https://<master-ip>:<apiserver-port>/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/
where master-ip is the IP address of your Kubernetes master node where API is running.
On single node setup, another way is use NodePort configuration to access Dashboard.
I found it on dashboard wiki:
Here is a sample of configuration to consider and adapt to your needs:
apiVersion: v1
...
name: kubernetes-dashboard
namespace: kube-system
resourceVersion: "343478"
selfLink: /api/v1/namespaces/kube-system/services/kubernetes-dashboard-head
spec:
clusterIP: <your-cluster-ip>
externalTrafficPolicy: Cluster
ports:
- port: 443
protocol: TCP
targetPort: 8443
selector:
k8s-app: kubernetes-dashboard
sessionAffinity: None
type: NodePort
After applying configuration, check for the exposed port for https using the command:
kubectl -n kube-system get service kubernetes-dashboard
If it returned for example 31707, you could start your browser with:
https://<master-ip>:31707
I was inspired by web ui dashboard guide and accessing dashboard wiki.