ReplicaSet因无效而失败:spec.template.metadata.labels [英] ReplicaSet fails with invalid: spec.template.metadata.labels

问题描述

出于我的学习目的，我正在尝试对plicateSet进行一些研究.我能够使用matchLabels成功创建一个copysetSet.为了测试matchExpression选择器，我首先创建了一个Pod，然后创建了一个新的副本集，以测试该副本集是否能够检查正在运行的Pod中的标签.但这失败并显示错误.这是我到目前为止所做的.

I am trying to do some research on replicaSet for my learning purpose. I was able to create a replicaSet successfully with matchLabels. To test the matchExpression selector, I created a pod first then a new replica set to test if the replica set will be able to check the labels from the running pods. But this failed with error. Here is what I did so far.

1. 首先使用特定标签创建了一个广告连播. Pod成功运行.
2. 使用matchExpressions创建一个副本集，将matchExpressions的值与Pod中指定的标签相匹配.

第二步之后，我得到了错误.以下是YAML文件和错误. 您能帮我理解这里的问题吗?

After the second step I get error. Below are the YAML files and the error. Can you help me understand the issue here ?

这是pod-definition.yaml

Here is the pod-definition.yaml

apiVersion: v1
kind: Pod
metadata:
  name: nginx-app
  labels:
    tier: frontend1

spec:
  containers:
  - name: nginx-c
    image: nginx

这是副本集-definition.yaml

Here is the replicaset-definition.yaml

apiVersion: apps/v1
kind: ReplicaSet
metadata:
  name: replicaset-2
spec:
  replicas: 2
  selector:
    matchExpressions:
      - {key: tier, operator: In, values: [frontend1]}
  template:
    metadata:
      labels:
        tier: nginx
    spec:
      containers:
      - name: nginx
        image: nginx

创建副本集时出错:

master $ kubectl create -f/root/replicaset-definition.yaml

master $ kubectl create -f /root/replicaset-definition.yaml

ReplicaSet"replicaset-2"无效: spec.template.metadata.labels:无效值: map [string] string {"tier":"nginx"}:selector与模板不匹配 labels

The ReplicaSet "replicaset-2" is invalid: spec.template.metadata.labels: Invalid value: map[string]string{"tier":"nginx"}: selector does not match template labels

推荐答案

能否通过更改模板部分中的标签来尝试以下操作?

Can you try with the following by changing the label in template section.

apiVersion: apps/v1
kind: ReplicaSet
metadata:
  name: replicaset-2
spec:
  replicas: 2
  selector:
    matchExpressions:
      - {key: tier, operator: In, values: [frontend1]}
  template:
    metadata:
      labels:
        tier: frontend1
    spec:
      containers:
      - name: nginx
        image: nginx

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