SCM endpoint unavailable on Flex Consumption Function App

Question

The SCM endpoint is frequently unavailable with the message "The service is unavailable."

The function app itself is working just fine but it's blocking for deployment of new versions.

As mysteriously as it happens, it also disappears after a while.

Answer 1

Hi @Sven Peeters ,

Welcome to the Microsoft Q&A Platform! Thank you for asking your question here.

Kudu is transient on Flex Consumption

Linux-based Consumption plan apps don't have a full scm (Kudu) site (Ref: Azure Docs). On the Flex Consumption plan specifically, Kudu is only spun up during an active deployment — and once deployment completes, it is recycled. This is why the SCM endpoint shows "The service is unavailable" between deployments, and then "mysteriously" comes back when a deployment is initiated.

Flex Consumption Deployment

Please use Flex consumption Deployment diagnostics tool to find out if any issues are reported. A Flex Consumption Deployment diagnostic tool is available in the Azure portal. Open your Flex Consumption app, select Diagnose and solve problems, and search for Flex Consumption Deployment. This tool displays detailed information about your deployments, including deployment history, package status, and troubleshooting recommendations.

From diagnostic tools, noticed there were deployment failures. Upon checking with internal team, we got to know there was an outage in the region and it was mitigated.

Also, as confirmed over Private message that issue is resolved and able to proceed with deployment now.