Warning: path /wlmdb(.*) cannot be used with pathType Prefix

[salfand1]

nginx ingress rule path as follows:
host: {{ .Values.global.bluexpDomain }}
http:
paths:
- path: /wlmdb(.*)
pathType: Prefix

I got the below warning:
Warning: path /wlmdb(.*) cannot be used with pathType Prefix

even though I added the below annotation:
nginx.ingress.kubernetes.io/use-regex: "true"

[k8s-ci-robot]

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[sonbui00]

@salfand1 I think this warning is a expected behaviour.

	// validPathType enforces alphanumeric, -, _ and / characters.
	// The field (?i) turns this regex case insensitive
	// The remaining regex says that the string must start with a "/" (^/)
	// the group [[:alnum:]\_\-\/]* says that any amount of characters (A-Za-z0-9), _, - and /
	// are accepted until the end of the line
	// Nothing else is accepted.

// GetWarnings returns a list of warnings an Ingress gets when being created.
// The warnings are going to be used in an admission webhook, and they represent
// a list of messages that users need to be aware (like deprecation notices)
// when creating a new ingress object

For you case, just use simple path: /wlmdb

[sonbui00]

@salfand1 come from this PR #9967
We need to use pathType ImplementationSpecific to remove warning and error in the future.
The doccument is not up to date with this. I'll check for the document

@rikatz Do you think we need to update the document for this? I see many guide use pathType prefix with special characters for regex

[tao12345666333]

@sonbui00 sure, we need to update the documents.

/kind document
/remove-kind bug

[k8s-ci-robot]

@tao12345666333: The label(s) kind/document cannot be applied, because the repository doesn't have them.

In response to this:

@sonbui00 sure, we need to update the documents.

/kind document
/remove-kind bug

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[salfand1]

So can I use ImplementationSpecific instead of Prefix?

[sonbui00]

@salfand1 for special character, you should use ImplementationSpecific . You can check more on FAQ here https://kubernetes.github.io/ingress-nginx/faq/#validation-of-path

[sonbui00]

/assign