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MeanwhileInHell
Asked: 2020-12-09 04:17:46 +0800 CST

Connect to remote minikube cluster using kubectl

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I am looking to see if I can connect to a remote minikube cluster (Ubuntu box) using local (Mac) kubectl. I currently use Docker and can do this very easily using docker-machine. Simply eval to the machine name, and docker will use the remote machine.

I was wondering if there was anything similar for minikube/kubectl? I have found a few articles that mention that I need to copy my remote ~/.minikube directory to my local, and change some config about. But this seems rather complicated for something a tool like docker-machine does seamlessly.

Is there a similar tool available, or if not, could someone help me with steps needed to connect to a remote cluster?

Remote Machine Currently I use the docker driver (this is the complete output of the command, just the one line):

$ minikube config view
- driver: docker

And have a number of NodePort services:

$ kubectl get service -A
NAMESPACE     NAME              TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                  AGE
default       apigateway        NodePort    10.100.122.255   <none>        8080:30601/TCP           19h
default       discoveryserver   NodePort    10.101.106.231   <none>        8761:30602/TCP           19h
default       elasticsearch     NodePort    10.97.197.14     <none>        9200:30604/TCP           19h
default       harness           NodePort    10.97.233.245    <none>        9090:30603/TCP           19h
default       kubernetes        ClusterIP   10.96.0.1        <none>        443/TCP                  19h
default       mongo             NodePort    10.97.172.108    <none>        27017:32625/TCP          19h
kube-system   kube-dns          ClusterIP   10.96.0.10       <none>        53/UDP,53/TCP,9153/TCP   19h

$ kubectl config view
apiVersion: v1
clusters:
- cluster:
    certificate-authority: /home/meanwhileinhell/.minikube/ca.crt
    server: https://192.168.50.2:8443   <<<<<< `minikube ip`
  name: minikube
contexts:
- context:
    cluster: minikube
    namespace: default
    user: minikube
  name: minikube
current-context: minikube
kind: Config
preferences: {}
users:
- name: minikube
  user:
    client-certificate: /home/meanwhileinhell/.minikube/profiles/minikube/client.crt
    client-key: /home/meanwhileinhell/.minikube/profiles/minikube/client.key

Local machine

$ kubectl config view
apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: DATA+OMITTED
    server: https://kubernetes.docker.internal:6443
  name: docker-desktop
- cluster:
    certificate-authority: /Users/mih.mac/remote/.minikube/ca.crt
    server: https://192.168.1.5:8443   <<<<<< Static IP of my remote machine
  name: minikube
contexts:
- context:
    cluster: docker-desktop
    user: docker-desktop
  name: docker-desktop
- context:
    cluster: minikube
    user: minikube
  name: minikube
current-context: docker-desktop
kind: Config
preferences: {}
users:
- name: docker-desktop
  user:
    client-certificate-data: REDACTED
    client-key-data: REDACTED
- name: minikube
  user:
    client-certificate: /Users/mih.mac/remote/.minikube/client.crt
    client-key: /Users/mih.mac/remote/.minikube/client.key
remote-access docker kubernetes minikube

1 Answers

  1. There is no tool available. Way to remotely access minikube is to do SSH tunneling .

    1- You need to be able to SSH from the Mac to the Ubuntu box.

    2- Add appropriate SSH port forwarding flags.Run the following command

    ssh -N -p 22 <user>@<public_ip> -L 127.0.0.1:18443:<minikube_ip>:8443

    Where:

    user is your name

    public_ip is the public IP of your server

    minikube_ip is the IP address of minikube, you can find it on the server using the command minikube ip. It will likely be 192.168.49.2.

    3- Then just plug appropriate K8s credentials into kubectl on the Mac.

    Please refer to the link for more information:

    https://www.zepworks.com/posts/access-minikube-remotely-kvm/ https://www.chevdor.com/post/2021/02/docker_to_k8s/

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