azurerm_cdn_endpoint : OriginHostHeader must match the regex

[jfcoz]

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Terraform (and AzureRM Provider) Version

Terraform v0.12.29
+ provider.azuread v0.11.0
+ provider.azurerm v2.22.0
+ provider.random v2.3.0
+ provider.tls v2.2.0

Affected Resource(s)

• azurerm_cdn_endpoint

Terraform Configuration Files

From documentation :

origin_host_header - (Optional) The host header CDN provider will send along with content requests to origins. Defaults to the host name of the origin.

When using azurerm_cdn_endpoint without a origin_host_header we get this error.

Error: Error waiting for CDN Endpoint "…" (Profile "…" / Resource Group "…") to finish creating: Code="BadRequest" Message="{\"ErrorMessage\":\"Errors found in Model: OriginHostHeader must match the regex '(^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9_\\\\-]*[a-zA-Z0-9])\\\\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\\\\-]*[A-Za-z0-9])$)|((?:[:0-9A-Fa-f]+))'.\"}"

From https://docs.microsoft.com/en-us/rest/api/cdn/endpoints/create :

properties.originHostHeader | string | The host header value sent to the origin with each request. This property at Endpoint can only be set allowed when endpoint uses single origin. If you leave this blank, the request hostname determines this value. Azure CDN origins, such as Web Apps, Blob Storage, and Cloud Services require this host header value to match the origin hostname by default.

With origin_host_header = "", same error.

Manual setup via portal works.

References

• CDN endpoint is not working when configured using Terraform #3084

[steve-88]

Any update on this? I want a blank origin_host_header but "" and null do not work

[rikribbers]

ran into the same issue. in the API specs ( https://docs.microsoft.com/en-us/rest/api/cdn/endpoints/create )

The host header value sent to the origin with each request. This property at Endpoint can only be set allowed when endpoint uses single origin. If you leave this blank, the request hostname determines this value. Azure CDN origins, such as Web Apps, Blob Storage, and Cloud Services require this host header value to match the origin hostname by default.

So depending on your origin it is required.

[ghost]

This has been released in version 2.61.0 of the provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading. As an example:

provider "azurerm" {
    version = "~> 2.61.0"
}
# ... other configuration ...

[github-actions]

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