Resource creation can fail if the application name is over 63 characters #2509
Description
What happened?
- ✋ I have searched the open/closed issues and my issue is not listed.
When an application has a name that is over 63 characters, labels on resources that are derived from the app name (e.g. pods, services) exceed the maximum length allowed by Kubernetes as according to RFC 1123. This causes resource creation to fail.
Reproduction Code
Create an application with a name over 63 characters e.g. this-is-the-name-of-an-app-that-is-exactly-sixty-four-characters.
Expected behavior
The creation of the resource should either be denied by a validating admission webhook, or the application name should be truncated before it is used in any labels.
Actual behavior
Example of a creation error:
io.fabric8.kubernetes.client.KubernetesClientException: Failure executing: POST at: https://10.96.0.1:443/api/v1/namespaces/default/pods. Message: Pod "this-is-the-name-of-an-app-that-is-exactly-sixt │
│ y-four-characters-driver" is invalid: metadata.labels: Invalid value: "this-is-the-name-of-an-app-that-is-exactly-sixty-four-characters": must be no more than 63 characters. Received status: Status(apiVersion=v │
│ 1, code=422, details=StatusDetails(causes=[StatusCause(field=metadata.labels, message=Invalid value: "this-is-the-name-of-an-app-that-is-exactly-sixty-four-characters": must be no more than 63 characters, reaso │
│ n=FieldValueInvalid, additionalProperties={})], group=null, kind=Pod, name=this-is-the-name-of-an-app-that-is-exactly-sixty-four-characters-driver, retryAfterSeconds=null, uid=null, additionalProperties={}), ki │
│ nd=Status, message=Pod "this-is-the-name-of-an-app-that-is-exactly-sixty-four-characters-driver" is invalid: metadata.labels: Invalid value: "this-is-the-name-of-an-app-that-is-exactly-sixty-four-characters": m │
│ ust be no more than 63 characters, metadata=ListMeta(_continue=null, remainingItemCount=null, resourceVersion=null, selfLink=null, additionalProperties={}), reason=Invalid, status=Failure, additionalProperties= │
│ {})
Environment & Versions
- Kubernetes Version: 1.32
- Spark Operator Version: master
- Apache Spark Version: 3.5.5
Additional context
No response
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