Page History

• apiVersion: 쿠버네티스 API버전을 가리킴

• kind: 리소스 유형

• metadata (ObjectMeta): 포드와 관련된 이름, 네임스페이스, 라벨, 그밖의 정보

  • namespace
  • name
  • labels

• spec (ReplicaSetSpec): PodTemplate

  • template

    • metadata
      • name
      • labels
    • spec
      • containers
      • volumes

  • selector

  • replicas

• status(ReplicaSetStatus) : 포드의 상태, 각 컨테이너의 설명 및 상태, 포드 내부의 IP 및 그밖의 기본 정보 등

apiVersion: apps/v1
kind: ReplicaSet
metadata:
  name: nginx-rs
  labels:
    app: myapp-rs
    type: front-end
spec:
  template:
    metadata:
      name: nginx
      labels:
        app: myapp
        type: front-end
    spec:
      containers:
        - name: nginx
          image: nginx:1.14.2
          ports:
            - containerPort: 80
  selector:
    matchLabels:
      type: front-end
  replicas: 3

• Labels and Selectors

  • Pod Discovery 기능: Label이 "type: front-end" 인 Pod만 Select

  selector:
    matchLabels:
      type: front-end

• replicas

  • 유지할 Pod갯수

   replicas: 3 

sansae@sansaeAir15m2 ~ % k apply -f nginx-rs.yaml
replicaset.apps/nginx-rs created

sansae@sansaeAir15m2 ~ % k get all
NAME                 READY   STATUS    RESTARTS   AGE
pod/nginx-rs-6dzx9   1/1     Running   0          91s
pod/nginx-rs-kbkn8   1/1     Running   0          91s
pod/nginx-rs-ml42r   1/1     Running   0          91s

NAME                 TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
service/kubernetes   ClusterIP   10.0.0.1     <none>        443/TCP   6h13m

NAME                       DESIRED   CURRENT   READY   AGE

$k replace -f nginx-rs.yaml
$k scale --replicas=6 -f nginx-rs.yaml
$k scale --replicas=6 rs nginx-rs

sansae@sansaeAir15m2 ~ % k scale --replicas=6 rs nginx-rs 
replicaset.apps/nginx-rs scaled
sansae@sansaeAir15m2 ~ % k get pod
NAME             READY   STATUS    RESTARTS   AGE
nginx-rs-6dzx9   1/1     Running   0          15m
nginx-rs-7mrz2   1/1     Running   0          9s
nginx-rs-hm85w   1/1     Running   0          9s
nginx-rs-kbkn8   1/1     Running   0          15m
nginx-rs-ml42r   1/1     Running   0          15m
nginx-rs-shljn   1/1     Running   0          9s