[BETA] [HPE] HPE-VME - Failed to upload the worker image: Cluster is unavailable

[RSB]

Hi,

We've just installed the HPE VME plugin for Veeam on a newly deployed 3-node HPE VME cluster (non-slipstreamed/fresh Ubutntu with the VME installed on top) and are hitting an error when testing the worker deployment:

Failed to upload the worker image: Cluster is unavailable

We have veeam debug logs enabled, but the short version is the error message:

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2026-01-08 15:31:27.5269 00029 [12556] ERROR | [Morpheus][xxx Test][41ee12dc-4adb-4f75-9cf1-458aa3a1cec8]:  <== Request "Post" "https://xxx/api/virtual-images/1134/upload?filename=HpeMorpheusVmeWorker_13.1.0.206.qcow2", headers: "[Authorization: ***]", cookies: "[XSRF-TOKEN: ***]", body: "{}"
2026-01-08 15:31:27.5269 00029 [12556] ERROR | [Morpheus][xxx Test][41ee12dc-4adb-4f75-9cf1-458aa3a1cec8]:  ==> Response "Post" "https://xxx/api/virtual-images/1134/upload?filename=HpeMorpheusVmeWorker_13.1.0.206.qcow2", "code: 413", duration: "10 sec 91 msec", headers: "[CF-RAY: xxx", cookies: "[]", body: ""
2026-01-08 15:31:27.5269 00029 [12556] ERROR | [Morpheus][xxx Test][41ee12dc-4adb-4f75-9cf1-458aa3a1cec8][HpeImageUpdater]: Failed to upload the virtual image "HpeMorpheusVmeWorker_13.1.0.206.qcow2": An exception occurred while processing the API request. HttpErrorCode: RequestEntityTooLarge, HttpRequestError: . Message: Veeam.Vbf.Rest.Common.ClientGeneration.ApiException: Cluster is unavailable
2026-01-08 15:31:27.5269 00029 [12556] ERROR | [Morpheus][xxx Test][41ee12dc-4adb-4f75-9cf1-458aa3a1cec8][HpeImageUpdater]:  ---> System.Net.Http.HttpRequestException: Request failed with status code RequestEntityTooLarge

We've removed and re-added the plugin as well as update the server / re-add the HPE VME cluster into veeam.

Please advise on next steps.

Kind Regards,

Rashpal

[EvgenyBaev]

Hello,

Could you please review the Nginx configuration files on your HPE VME manager machine?
In my environment, these files are located in /opt/morpheus/embedded/nginx/conf/sites-enabled.

Typically, there should be no restrictions on client_max_body_size in the section for /api/virtual-images. For reference, here is an example configuration from our lab:

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location /api/virtual-images {
    client_max_body_size 0;
    proxy_buffering off;
    proxy_request_buffering off;
    proxy_set_header X-Real-IP  $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $host;
    proxy_http_version 1.1;
    proxy_pass http://localhost:8080;
}

In my testing, I was only able to reproduce the issue when I manually set a restrictive value for client_max_body_size (for example, client_max_body_size 50M;) and then reloaded Nginx using:

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/opt/morpheus/embedded/nginx/sbin/nginx -s reload

For your reference, the size of our image is 970.2 MiB.

Please let me know if you have any questions or need further assistance.

[RSB]

Hi,

We use an all-in-one Morpheus 8.0.12 machine to manage our HPE VME nodes - this is the only machine that seems to have the nginx configs on it. I've checked the config you posted - ours seems identical. It looks very "default" for the most part for both the Morpheus and Morpheus-ssl files within that directory though there are protocol specific code blocks - e.g. the morpheus-ssl config includes this at its start:

server {
listen 443 ssl;
http2 on;
server_name xxx;
access_log /var/log/morpheus/nginx/morpheus-ssl-access.log;
ssl_certificate /etc/morpheus/ssl/xxx.crt;
ssl_certificate_key /etc/morpheus/ssl/xxx.key;
ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
ssl_protocols TLSv1.2;
ssl_prefer_server_ciphers off;
ssl_session_timeout 5m;
ssl_session_cache builtin:1000 shared:SSL:10m;
ssl_session_tickets off;
ssl_dhparam /etc/morpheus/ssl/dhparams/dhparams.pem;
root /var/opt/morpheus/nginx/storage;
proxy_read_timeout 300;

I did try the nginx reload and a retry of testing the worker, but i still get the same error.

Regards,

Rashpal

[EvgenyBaev]

Hello, Rashpal,

Would it be possible for you to provide the complete Veeam.HPEMORPHEUSVME.PlatformSvc.log file with Debug level enabled for the period when the issue occurred?

Additionally, could you please share your current Nginx configuration files? I’d like to review them to ensure everything is set up correctly.

• both configs from /opt/morpheus/embedded/nginx/conf/sites-enabled

• /opt/morpheus/embedded/nginx/conf/nginx.conf

• configs from /opt/morpheus/embedded/nginx/conf/conf.d if you have any

Have you tried uploading other images via the HPE WebUI? If so, does the upload process work without any issues?

You might also try uploading our worker QCOW2 image through the HPE WebUI. This can help determine whether the problem is related to the plugin or if it’s an issue on the HPE side.
You can find the image in the Veeam installation directory:

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*\Veeam\Plugins\HPE Morpheus VM Essentials\Service\Images

Thank you!

[EvgenyBaev]

Hello Rashpal,

Thank you for providing the logs and Nginx configuration.

Our configurations are nearly identical, with the only difference being a single line related to IPv6 support in each config. However, I don't believe this would be the cause of the issue.

I also compared our error stacks. While both environments return

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HttpErrorCode: RequestEntityTooLarge,

in your case, there is an additional exception: "Cluster is unavailable". This is not present in my environment.

Would it be possible for you to provide the Morpheus logs captured immediately after reproducing the issue? Specifically:
1) From the HPE manager:

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/var/log/morpheus/morpheus-ui/current

2) From the cluster nodes:

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/var/log/morpheus-node/morphd/current

And could you please tell if there is any proxy between your VBR and the HPE manager, or is it a direct connection?

Thank you in advance for your assistance!