Question 108140 in Azure Question posted in
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"The service is unavailable" on existing or new Azure Functions hosted on Linux

I have an existing Azure function, .NET 6, hosted on Linux, it was working up until today. Now it returns "The service is unavailable".

I tried to create a brand new Azure function – .NET 6 – Linux from the Portal and it returns the same message. On Windows hosting it works fine.

Creating a new function in Portal and failing without any other modifications is a bit worrying. Is there something broken on MS/Azure side?

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  1. Chosen as BEST ANSWER
    0

    It started working again. I suspect there was an issue on Azure side.


  2. 0

    Azure Functions Linux Hosting Plan – New Http Trigger Function Published Successfully and working good from our end:
    enter image description here

    There are many reasons that cause 503 service unavailable in Azure Functions:

    • Memory leak/issue from the code causing the backend server to return 503.

    When a service consumes more memory than is available under the consumption plan, it is evicted. This problem can be resolved by switching to a dedicated hosting plan. Refer here for more information.

    • Function host might be down/restarting
    • Due the deallocation/not running the backend server, there may be Platform issue.

    Please refer to one of My workarounds to investigate and fix this issue.

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