使用 kubectl 应用部分 kubernetes manifest yaml

Question

考虑以下 kubernetes 清单 (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

如果我这样做 kubectl apply -f mymanifest.yml 两个 pods 都已部署。我记得有人告诉我，可以只部署一个 pod。像 :

kubectl apply -f mymanifest.yml secondpod

但是没用。有办法吗？

提前致谢

Answer 1

您可以将标签添加到 pods

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

在应用 yaml 时使用特定标签进行过滤。过滤器支持 =、== 和 !=

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

您还可以使用 --prune，这是一个 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

使用 kubectl 应用部分 kubernetes manifest yaml

Apply part of kubernetes manifest yaml using kubectl

yaml

kubernetes

kubectl