Kubernetes create deployment unexpected SchemaError

问题:

I'm following that tutorial (https://www.baeldung.com/spring-boot-minikube) I want to create Kubernetes deployment in yaml file (simple-crud-dpl.yaml):

apiVersion: apps/v1 kind: Deployment metadata:   name: simple-crud spec:   selector:       matchLabels:         app: simple-crud   replicas: 3   template:     metadata:       labels:         app: simple-crud     spec:       containers:         - name: simple-crud           image: simple-crud:latest           imagePullPolicy: Never           ports:             - containerPort: 8080 

but when I run kubectl create -f simple-crud-dpl.yaml i got: error: SchemaError(io.k8s.api.autoscaling.v2beta2.MetricTarget): invalid object doesn't have additional properties

I'm using the newest version of kubectl:

kubectl version Client Version: version.Info{Major:"1", Minor:"10", GitVersion:"v1.10.11", GitCommit:"637c7e288581ee40ab4ca210618a89a555b6e7e9", GitTreeState:"clean", BuildDate:"2018-11-26T14:38:32Z", GoVersion:"go1.9.3", Compiler:"gc", Platform:"darwin/amd64"} Server Version: version.Info{Major:"1", Minor:"14", GitVersion:"v1.14.0", GitCommit:"641856db18352033a0d96dbc99153fa3b27298e5", GitTreeState:"clean", BuildDate:"2019-03-25T15:45:25Z", GoVersion:"go1.12.1", Compiler:"gc", Platform:"linux/amd64"} 

I'm also using minikube locally as it's described in tutorial. Everything is working till deployment and service. I'm not able to do it.

回答1:

After installing kubectl with brew you should run:

1. rm /usr/local/bin/kubectl

2. brew link --overwrite kubernetes-cli

And also optionally:

brew link --overwrite --dry-run kubernetes-cli.

回答2:

I second @rennekon's answer. I found that I had docker running on my machine which also installs kubectl. That installation of kubectl causes this issue to show.

I took the following steps:

• uninstalled it using brew uninstall kubectl
• reinstalled it using brew install kubectl
• (due to symlink creation failure) I forced brew to create symlinks using brew link --overwrite kubernetes-cli

I was then able to run my kubectl apply commands successfully.

回答3:

You are using the wrong kubectl version.

Kubectl is compatible 1 version up and down as described in the official docs

The error is confusing but it simply means that your version 1.10 isn't sending all the required parameters to the 1.14 api.

回答4:

Your client version is too old. In my env this version comes with Docker. I have to download new client from https://storage.googleapis.com/kubernetes-release/release/v1.14.0/bin/windows/amd64/kubectl.exe and now works fine:

kubectl version Client Version: version.Info{Major:"1", Minor:"14", GitVersion:"v1.14.0", GitCommit:"641856db18352033a0d96dbc99153fa3b27298e5", GitTreeState:"clean", BuildDate:"2019-03-25T15:53:57Z", GoVersion:"go1.12.1", Compiler:"gc", Platform:"windows/amd64"} Server Version: version.Info{Major:"1", Minor:"14", GitVersion:"v1.14.0", GitCommit:"641856db18352033a0d96dbc99153fa3b27298e5", GitTreeState:"clean", BuildDate:"2019-03-25T15:45:25Z", GoVersion:"go1.12.1", Compiler:"gc", Platform:"linux/amd64"} 

回答5:

I encountered the same issue on minikube/ Windows 10 after installing Docker. It was caused by the version mismatch of kubectl that was mentioned a couple of times already in this thread. Docker installs version 1.10 of kubectl.
You have a couple of options:

1) Make sure the path to your k8s bin is above the ones in docker
2) Replace the kubectl in 'c:\Program Files\Docker\Docker\resources\bin' with the correct one

回答6:

I too had the same problem. In my system kubectl is running from docker which is preinstalled when we install Docker. You can check this by using below command

ls -l $(which kubectl)  

which returns as

/usr/local/bin/kubectl -> /Applications/Docker.app/Contents/Resources/bin/kubectlcode.

Now we have to overwrite the symlink with kubectl which is installed using brew

rm /usr/local/bin/kubectl  brew link --overwrite kubernetes-cli 

(optinal)

brew unlink kubernetes-cli && brew link kubernetes-cli 

To Verify

ls -l $(which kubectl) 

回答7:

Was running into the same issue after installing kubectl on my Mac today. Uninstalling kubectl [via brew uninstall kubectl] and reinstalling [brew install kubectl] resolved the issue for me.

回答8:

For me Docker installation was the problem. As Docker now comes with Kubernetes support, it installs kubectl along with its own installation. I had downloaded kubectl and minikube without knowing it, then my minikube was being used by Docker's kubectl installation.

Make sure that it is not also happening with you.

A second cause would be a deprecated apiVersion in your .yaml files.

回答9:

I had a similar problem with error

error: SchemaError(io.k8s.api.storage.v1beta1.CSIDriverList): invalid object doesn't have additional properties

My issue was that my mac was using google's kubectl that was installed with the gcp tools. My path looks there first before going into /usr/local/bin/

Once I run kubectl from /usr/local/bin my problem went away.

回答10:

From what it seems, you have inconsistency in spaces. Use 2 spaces for indentation. I have full explanation of deployments here. I think it should work when you fix spaces.

Hope it helps

回答11:

I don't think the problem is with imagePullPolicy, unless you don't have the image locally. The error is about autoscaling, which means it's not able to create replicas of the container.

Can you set replicas: 1 and give it a try?

回答12:

According to the kubectl docs,

You must use a kubectl version that is within one minor version difference of your cluster.

kubectl v1.10 client apparently makes requests to kubectl v1.14 server without some newly (in 4 minor versions) required parameters.

For brew users, reinstall kubernetes-cli. It's worth checking what installed the incompatible version. For brew users, check the command symlink ls -l $(which kubectl).

文章来源: Kubernetes create deployment unexpected SchemaError