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add restriction to indexed job name

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This commit is contained in:
Mengxue Zhang 2021-05-05 00:23:25 +00:00
parent 2d2ee6bc3a
commit 0c99f29f98
1 changed files with 10 additions and 0 deletions
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10
pkg/apis/batch/validation/validation.go
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@ -88,6 +88,16 @@ func ValidateJob(job *batch.Job, opts apivalidation.PodValidationOptions) field.
allErrs := apivalidation.ValidateObjectMeta(&job.ObjectMeta, true, apivalidation.ValidateReplicationControllerName, field.NewPath("metadata"))
allErrs = append(allErrs, ValidateGeneratedSelector(job)...)
allErrs = append(allErrs, ValidateJobSpec(&job.Spec, field.NewPath("spec"), opts)...)
if job.Spec.CompletionMode != nil && *job.Spec.CompletionMode == batch.IndexedCompletion && job.Spec.Completions != nil && *job.Spec.Completions > 0 {
// For indexed job, the job controller appends a suffix (`-$INDEX`)
// to the pod hostname when indexed job create pods.
// The index could be maximum `.spec.completions-1`
// If we don't validate this here, the indexed job will fail to create pods later.
maximumPodHostname := fmt.Sprintf("%s-%d", job.ObjectMeta.Name, *job.Spec.Completions-1)
if errs := apimachineryvalidation.IsDNS1123Label(maximumPodHostname); len(errs) > 0 {
allErrs = append(allErrs, field.Invalid(field.NewPath("metadata").Child("name"), job.ObjectMeta.Name, fmt.Sprintf("will not able to create pod with invalid DNS label: %s", maximumPodHostname)))
}
}
return allErrs
}