kubernetes - 使用kubectl应用部分kubernetes list yaml

Question

考虑以下kubernetes list (mymanifest.yml):

apiVersion: v1
kind: Pod
metadata:
  name: firstpod
spec:
  containers:
  - image: nginx
    name: nginx
---
apiVersion: v1
kind: Pod
metadata:
  name: secondpod
spec:
  containers:
  - image: nginx
    name: nginx

如果我执行 kubectl apply -f mymanifest.yml，则两个pod均已部署。
我记得有人告诉我，只能部署一个 pods 。就像是 :

kubectl apply -f mymanifest.yml secondpod

但这是行不通的。
有办法吗？
提前Thx

Answer 1

您可以向 pods 添加标签

apiVersion: v1
kind: Pod
metadata:
  name: firstpod
  labels:
    app: firstpod
spec:
  containers:
  - image: nginx
    name: nginx
---
apiVersion: v1
kind: Pod
metadata:
  name: secondpod
  labels:
    app: secondpod
spec:
  containers:
  - image: nginx
    name: nginx

应用Yaml时，请使用特定的标签进行过滤。过滤器支持 =， ==和 !=

kubectl apply -f mymanifest.yml -l app=secondpod

您还可以使用 --prune(这是Alpha功能)。

# Apply the configuration in manifest.yaml that matches label app=secondpod and delete all the other resources that are
not in the file and match label app=secondpod.
kubectl apply --prune -f mymanifest.yml -l app=secondpod