Kubernetes Labels - Centos7

Label

Resources 를 그룹화

node 및 pod 지정 가능

 

명령어

kubectl label node node 1 storage=hdd : storage hdd라는 그룹으로 node 1에서 라벨 생성

kubectl get nodes --show-labels : 라벨과 함께 node 보기

kubectl get pod http --show-labels : 라벨과 함께 pod 보기

kubectl label node node2 storage- : 라벨 명칭 없이 node 2에 라벨 생성

apiVersion: v1
kind: Pod
metadata:
  name: http
  labels:
apiVersion: v1
kind: Pod
metadata:
  name: http
  labels:
    env: prod
spec:
  containers:
  - name: apache1
    image: httpd
    imagePullPolicy: IfNotPresent
    ports:
    - containerPort: 80

---
apiVersion: v1
kind: Pod
metadata:
  name: http1
spec:
  containers:
  - name: apache2
    image: httpd
    imagePullPolicy: IfNotPresent
    ports:
    - containerPort: 80
  nodeSelector:
    storage: hdd

---

apiVersion: v1
kind: Pod
metadata:
  name: http2

spec:
  containers:
  - name: apache2
    image: httpd
    imagePullPolicy: Never
    ports:
    - containerPort: 80
  nodeSelector:
    storage: ssd

 

apiVersion: v1
items:
- apiVersion: v1
  kind: Pod
  metadata:
    annotations:
      kubectl.kubernetes.io/last-applied-configuration: |
        {"apiVersion":"v1","kind":"Pod","metadata":{"annotations":{},"name":"app-nginx","namespace":"default"},"spec":{"containers":[{"image":"nginx","imagePullPolicy":"IfNotPresent","name":"nginx","ports":[{"containerPort":80}]}]}}
    creationTimestamp: "2023-09-11T21:25:38Z"
    name: app-nginx
    namespace: default
    resourceVersion: "44275"
    uid: dad9db66-08e7-4521-aa30-7307813aeeeb
  spec:
    containers:
    - image: nginx
      imagePullPolicy: IfNotPresent
      name: nginx
      ports:
      - containerPort: 80
        protocol: TCP
      resources: {}
      terminationMessagePath: /dev/termination-log
      terminationMessagePolicy: File
      volumeMounts:
      - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
        name: kube-api-access-8fzx9
        readOnly: true
    dnsPolicy: ClusterFirst
    enableServiceLinks: true
    nodeName: node1
    preemptionPolicy: PreemptLowerPriority
    priority: 0
    restartPolicy: Always
    schedulerName: default-scheduler
    securityContext: {}
    serviceAccount: default
    serviceAccountName: default
    terminationGracePeriodSeconds: 30
    tolerations: