Kubernetes : Local에 설치하기

Sixhustle·2020년 10월 10일

Kubernetes 시작하기

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MacOS에 Kubernetes를 설치하고, 실습하는 내용을 적었습니다.

Kubernetes 활성화

위의 사진처럼, Docker를 실행시킨후, Preference에 접속합니다.
Enable Kubernetes와 Show system containers (advanced)를 체크해주고, Apply & Restart를 눌러줍니다.
Popup이 뜨고, Instsall을 클릭하면, 사진의 왼쪽 하단과 같이 Kubernetes running표시가 나타납니다.

Kubernetes 설치

$ curl -LO "https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/darwin/amd64/kubectl"
$ chmod +x ./kubectl
$ sudo mv ./kubectl /usr/local/bin/kubectl
$ kubectl version --client

Install kubectl on macOS에 자세한 설명이 나와 있습니다.
위의 명령어들은 공식 문서에 적혀있는 명령어들을 나열한 것입니다.

Kubernetes Dashboard

$ kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0/aio/deploy/recommended.yaml
$ kubectl proxy

위 두 명령어를 통해 Local에서 Kubernetes Dashboard에 접근할 수 있습니다.
접속Url: http://localhost:8001/api/v1/namespaces/kubernetes-dashboard/services/https:kubernetes-dashboard:/proxy/

Create Sample User(Generate token)

$ cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: ServiceAccount
metadata:
  name: admin-user
  namespace: kubernetes-dashboard
EOF

$ cat <<EOF | kubectl apply -f -
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: admin-user
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: ServiceAccount
  name: admin-user
  namespace: kubernetes-dashboard
EOF

$ kubectl -n kubernetes-dashboard describe secret $(kubectl -n kubernetes-dashboard get secret | grep admin-user | awk '{print $1}')
Name:         admin-user-token-j6vbh
Namespace:    kubernetes-dashboard
Labels:       <none>
Annotations:  kubernetes.io/service-account.name: admin-user
              kubernetes.io/service-account.uid: a60fb691-9218-4021-aa1f-5e2cff8b442c

Type:  kubernetes.io/service-account-token

Data
====
ca.crt:     1025 bytes
namespace:  20 bytes
token:      eyJhbGciOiJSUzI1NiIsImtpZCI6IjFFZEdUUkN2OEd4elVaZmFhY3FnS2RVS1lYWlpVNzRDS1pHTHpWTEc1TjAifQ.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.K8WRwl_pphQVDU_3CtlBRdtwBPFLCdF7DOFSpZiS634PJGlmPDlOzaW8mSIHYSAKgrC8aHZswk0jjbdzlUHz-TVsLxw_i3iSk-2a3mUFrFaT2MR8wSnIFSybZGI_qgZJlvWZ_pIPB9o04UIT5sBOrxA9BEqJdcwoLYD81oeHgjzZrkmWNM9h71ko4a27eLooubuYygDNJGeRvddnJ8_ZIt32h57jwpJzTcPcUV71MsVm3y2xfYCKMckqHvmINJyvfnyDS0OgumjxUWx4hvZ0yMHmNpN_u-l8XHezWnXq8UWyXK2rQdAXmJwgDYhq3IngmIBv6wwphhhWypknAqJihA

Dashboard에 접속하기 위해선 Sample user를 만들어 Token을 발급 받아야 합니다.
공식 문서의 명령어들을 순차적으로 실행하면 마지막에 token을 발급받습니다.