阿里云安装测试MiniKube

minikube 不适用于生产环境，只适合玩玩，研究太多没有多大意义，建议转向 MicroK8s

set kubectl connect to remote minikube from local

1. before install minikube, you need install docker first.
Install Docker Engine on Ubuntu

2. create a new user, because minikube can not start from root user.

# create a user called docker, add to group docker
useradd docker docker

modify docker as sudo user

usermod -aG sudo docker

3. now you can start your minikube

minikube start

check your cluster info

docker@minikube:~/.kube$  kubectl cluster-info
Kubernetes control plane is running at https://192.168.49.2:8443

4. now let generate SSH key for user docker

ssh-keygen

now, you have your key-pairs in you home dir

docker@minikube:~$ ls -lah .ssh/
-rw------- 1 docker docker 2.6K Jun 19 15:18 id_rsa
-rw-r--r-- 1 docker docker  569 Jun 19 15:18 id_rsa.pub

very inportant: chmod 0700 ~ && chmod 600 ~/.ssh & chmod 600 *, otherwise, you will get surprise.

cat ./.ssh/id_rsa to get your private key.

5. ssh-keygen in local to generate .ssh folder

get in to the folder,

• create a pem file minikube_docker.pem, peste the content of .ssh/id_rsa from remote server.
• give 600 permission to this file: chmod 600 minikube_docker.pem
• you can create config file if you do not have it, and append the content below:

  Host aliyun_minikube
  HostName YOUR_REMOTE_HOSTING_IP
  User docker
  IdentityFile ~/.ssh/minikube_docker.pem

  now, try connect to your remote server:

  ~/.ssh$ ssh aliyun_minikube
  Welcome to Ubuntu 20.04.2 LTS (GNU/Linux 5.4.0-74-generic x86_64)

  and actually, you can manage your minikube cluster now.

  docker@minikube:~$ kubectl cluster-info
  Kubernetes control plane is running at https://192.168.49.2:8443docker@minikube:~$ kubectl cluster-info

6. but we can do something more, instead login to remote server, we can manage minikube from local direclty.

now we known minikube running on ip:192.168.49.2 port: 8443
本地minikube命令访问远程minikube集群

ssh -L 18443:192.168.49.2:8443 -N -f aliyun_minikube

install kubectl to your local.

go to remote server, get kubectl config, save it to local in the same palce, ~/.kube/config

docker@minikube:~$ cat ~/.kube/config
apiVersion: v1
clusters:
- cluster:
    certificate-authority: /home/docker/.minikube/ca.crt
    extensions:
    - extension:
        last-update: Sat, 19 Jun 2021 14:45:54 CST
        provider: minikube.sigs.k8s.io
        version: v1.21.0
      name: cluster_info
    server: https://192.168.49.2:8443
  name: minikube
contexts:
- context:
    cluster: minikube
    extensions:
    - extension:
        last-update: Sat, 19 Jun 2021 14:45:54 CST
        provider: minikube.sigs.k8s.io
        version: v1.21.0
      name: context_info
    namespace: default
    user: minikube
  name: minikube
current-context: minikube
kind: Config
preferences: {}
users:
- name: minikube
  user:
    client-certificate: /home/docker/.minikube/profiles/minikube/client.crt
    client-key: /home/docker/.minikube/profiles/minikube/client.key

notice: certificate-authority, certificate-authority, certificate-authority
get the content, save to local.

now, you can connect to you minikube in remote server from local.

~$ kubectl get node
NAME       STATUS   ROLES                  AGE     VERSION
minikube   Ready    control-plane,master   5h22m   v1.20.7