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Questions tagged [kubernetes-custom-resources]

123 questions
4
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1 answer

How to create Kubernetes objects with Status fields?

I am using the kubernetes operator to create a custom resource in the cluster, the CR has the Status field populated, but when the object gets created the Status field is empty. This is how I am creating the CR: reconcile.Create(ctx, &object) This…
Vishrant
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2 answers

Restricted user in K8s need CRD's access

In my scenario user has access to four namespaces only, he will switch between namespaces using contexts below. How can I give him access to CRD's along with his exiting access to four namespaces. CURRENT NAME CLUSTER …
Jay
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4
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Kubernetes: Why does patching a custom resource's /status subresource update the parent resource?

I'm trying to understand Kubernetes behaviour as it pertains to custom resources and their subresources -- specifically the status subresource. Specifically, I want to update the status subresource without modifying the parent custom resource. To…
Brian Warsing
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4
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1 answer

Kubernetes CRDs - Reference existing validation spec

Is there a way to access existing validation specs? For example, I want to be able to set NodeAffinity on my CRD, and would like to just $ref: . I found the entire API here:…
user2896438
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3
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1 answer

Properly using oneOf in a Kubernetes CRD OpenAPI schema

I am trying to describe mutually exclusive properties in an OpenAPI v3 schema. I have a custom resource that can take a property widgetName, a name of a Widget resource, or widgetDefinition, an inline Widget definition. That is, this is…
larsks
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0 answers

Reconcile triggers again on creating a secret owned by custom resource

I used the operator-sdk to create a custom resource DatabaseService. Creation a DatabaseService CR should trigger the Reconcile function that would create a secret in the CR namespace after getting it from a third party. I set the CR as the owner of…
Alechko
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3
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1 answer

Using client-go to explain a resource

Using kubectl I can show documentation for a resource using explain: kubectl explain storageclass Is there similar functionality available with client-go?
Trevor
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3
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1 answer

Kubernetes operator create Deployment using yaml template

I am trying my hands on creating my own kubernetes operator by following this link. In the Reconcile function, I need to create multiple Deployments and each will vary in some attributes (like name for e.g.) and the configuration is huge. Instead of…
Vishal
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3
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1 answer

How to display a kubectl column using a fraction format (i.e. X/Y) for a Custom Resource

In Kubernetes, is it possible to display a column using a fraction format (i.e. X/Y) using the "additionalPrinterColumns" field of a CRD? More precisely, I would like kubectl to display the description of a CR field using the same format than the…
Fabrice Jammes
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3
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Kubernetes Yaml with CRD Resource and CRD object

I have a single yaml file having CustomResourceDefinition and CRD object. But when I am trying to apply the yaml then sometimes crd object creation failed with kind DemoRule not present. Tried to apply separately and it worked fine. Is there any way…
Sumit Khanna
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1 answer

Maximum Size of Status in the Kubernetes CRD?

Is there a limit on the size of Kubernetes spec and status size in Kubernetes? I have a use case in which the operator spec is a regular expression and regex gets expanded to a lot of actual items whose status I have to store. Example: type…
Alok Kumar Singh
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3
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2 answers

Dynamic key/value input properties to CRD in Kubernetes

While defining a K8 CRD, I need a flexibility to pass any key/value pairs as input while submitting a resource object. https://kubernetes.io/docs/tasks/extend-kubernetes/custom-resources/custom-resource-definitions/ schema: openAPIV3Schema: …
colossal
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3
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1 answer

Best Practice for Operators for how to get Deployment's configuration

I am working on operator-sdk, in the controller, we often need to create a Deployment object, and Deployment resource has a lot of configuration items, such as environment variables or ports definition or others as following. I am wondering what is…
Joe
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3
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1 answer

How to check if a field was explicitly set in a custom resource

Update: I found that my code actually working. The reason that reconcile loop get false at first is because I have another operator existing in my cluster and doing boolean flipping automatically. After deleted that operator, my code works as…
Haoming Zhang
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3
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1 answer

kubernetes: validating a yaml file against a custom resource

Assuming I have a custom resource on my k8s cluster exposed on a proprietary api endpoint, e.g. somecompany/v1 Is there a way to validate a .yaml manifest describing this resource? It his a functionality the custom resource provider should expose or…
pkaramol
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