Hello everybody,

I have an issue with User having to many groups on Microsoft Azure. As we do authenticate through openid on Azure. I saw a Problem with Header Size. So I tried to increase the Header_Size from 8KB to 16KB. But it doesn't work in any way. We have a Deployment on the elastic Cloud, so I only can change such settings through API Console or by editing additional Config part in the web.

If I try through APi with code:

put _cluster/settings
"transient" : {
"http.max_header_size" : "16384"

Here i get this error:
400 — Bad Request

  "status": 400,
  "error": {
    "root_cause": [
        "reason": "transient setting [http.max_header_size], not dynamically updateable",
        "type": "illegal_argument_exception"
    "type": "illegal_argument_exception",
    "reason": "transient setting [http.max_header_size], not dynamically updateable"

If I try through Additional Config I get an error about that this parameter is not allowed...

So is there a way to increase the Header_Size? Or do I have to request it at Elastic Support?


Can you share more information about the problem you are seeing. Do you have errors?

This is a static setting so I believe you will need to contact Elastic Cloud support.

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