[쿠버네티스] Label & Selector

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Label & Selector

1) Label
- 객체에 연결된 key-value 쌍 값
- 리소스를 논리적인 그룹으로 나누거나 식별하기 위해 붙이는 이름
- 객체 생성 시 첨부할 수 있으며 언제든지 추가 및 수정 가능
2) Selector
- 특정 Label에 해당하는 객체를 식별하거나 검색할 수 있음

# Node Label 확인
kubectl get nodes --show-labels
# Node Label 추가
kubectl label nodes k8s-worker01 svc=web


apiVersion: v1
kind: Pod
metadata:
  name: nginx
  labels:
    env: test
spec:
  containers:
  - name: nginx
    image: nginx
    imagePullPolicy: IfNotPresent
  nodeSelector:
    svc=web