1. Add labels to Nodes

• Label을 부여하여, pod 할당시 node를 특정하기 위함

• 아래는 label 부여 과정

  $ kubectl get nodes --show-labels
  NAME            STATUS   ROLES    AGE   VERSION                    LABELS
  seungbae-pn41   Ready    <none>   28d   v1.24.0-2+59bbb3530b6769   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=seungbae-pn41,kubernetes.io/os=linux,microk8s.io/cluster=true,node.kubernetes.io/microk8s-controlplane=microk8s-controlplane
  kube-worker     Ready    <none>   16d   v1.24.0-2+59bbb3530b6769   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=kube-worker,kubernetes.io/os=linux,microk8s.io/cluster=true,node.kubernetes.io/microk8s-worker=microk8s-worker
  
  # add label
  $ kubectl label nodes seungbae-pn41 node-role.kubernetes.io/master=0
  $ kubectl label nodes kube-worker node-role.kubernetes.io/worker=0
  
  # remove label
  $ kubectl label nodes seungbae-pn41 node-role.kubernetes.io/master-
  
  # get node info
  $ kubectl get nodes
  NAME            STATUS   ROLES    AGE   VERSION
  seungbae-pn41   Ready    master   28d   v1.24.0-2+59bbb3530b6769
  kube-worker     Ready    worker   16d   v1.24.0-2+59bbb3530b6769
  

2. Config

# run at host
$ microk8s config > kubeconfig

# run at client
$ brew install kubectl
$ mkdir ~/.kube
$ scp kubem:/home/seungbae/home-kube/kubeconfig ~/.kube/config
$ chmod 700 ~/.kube/config  # user only mode
$ kubectl config view