Question

What are the validations for cluster name in Kubernetes?

Please tell me the minimum, maximum length of characters for Cluster name and what special characters are allowed for cluster name?

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Hi there!

We currently use the upstream kubernetes validation logic linked below.

TL;DR - 63 chars max + “a DNS-1035 label must consist of lower case alphanumeric characters or ‘-’, start with an alphabetic character, and end with an alphanumeric character”

https://github.com/kubernetes/kubernetes/blob/7f23a743e8c23ac6489340bbb34fa6f1d392db9d/staging/src/k8s.io/apimachinery/pkg/util/validation/validation.go#L145-L162

Regards,

John Kwiatkoski Senior Developer Support Engineer - Kubernetes