Need a pointer/ example on how to do `kubectl -f apply abc.yaml`

[ravieze]

Describe the bug
I went through the examples but I was unable to figure out how to simulate kubectrl -f apply abc.yaml

I am using spark operator. The yaml is of kind SparkApplication. I was able to find a way to submit svc and pods to the kubernetis. But I was not able to figure out how to submit a custom yaml which submits to spark operator

Client Version
latest

Kubernetes Version
1.25.4

Java Version
Java 8

To Reproduce
Steps to reproduce the behavior:

Expected behavior
A clear and concise description of what you expected to happen.

KubeConfig
If applicable, add a KubeConfig file with secrets redacted.

Server (please complete the following information):

• OS: [e.g. Linux] -- ARM LInux
• Environment [e.g. container] - DOcker
• Cloud [e.g. Azure] - AWS EKS

Additional context
Add any other context about the problem here.

[brendandburns]

You need to generate or write a pojo (Java Object) that represents your SparkApplication, once you do that you can use it with the KubectlApply code here: https://github.com/kubernetes-client/java/blob/master/extended/src/main/java/io/kubernetes/client/extended/kubectl/KubectlApply.java

Alternately, you can use the generic client:
https://github.com/kubernetes-client/java/blob/master/examples/examples-release-15/src/main/java/io/kubernetes/client/examples/GenericClientExample.java

It's not quite KubectlApply but it enables you to create arbitrary resources without defining a Java object.

[tamilselvan1102]

May be below link would help
kubectl-apply

[ravieze]

This was what I was looking out for. But even before your advice, this is what I did...

kc apply -f /tmp/Sparkapplication.yaml --v=8 --server-side

This returns the list of REST APIs being called by kubectl. I found doing this way is way is easy and simple.

The generic client is given -- I was not able to figure out how to get the same done easily. SO i took the above approach.

[simsnow]

You can load the yaml and use Kubectl.apply to create it : )

        String yamlContent = "";
        String namespace = "";

        ApiClient client = Config.fromCluster();
        List<Object> k8sObjects = Yaml.loadAll(yamlContent);
        for (Object object : k8sObjects) {
            Kubectl.apply(KubernetesObject.class)
                .apiClient(client)
                .namespace(namespace)
                .resource((KubernetesObject) object)
                .execute();
        }

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/close not-planned

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue, marking it as "Not Planned".

In response to this:

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

• Reopen this issue with /reopen
• Mark this issue as fresh with /remove-lifecycle rotten
• Offer to help out with Issue Triage

Please send feedback to sig-contributor-experience at kubernetes/community.

/close not-planned

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