Issue After PPPM-15094 - client_max_body_size set to 1MB

[mvais]

Server operating system version

Ubuntu 22.04.5 LTS

Plesk version and microupdate number

18.0.72 Update 2

Hi All

After the installation of Plesk Obsidian 18.0.72 Update 2 (PPPM-15094) (https://docs.plesk.com/release-notes/obsidian/change-log/#plesk-18072-mu2):

• Nginx uses the default value of 1MB for client_max_body_size
• Changing the Nginx setting Maximum allowed HTTP request body size has no impact anymore

/var/log/nginx/error.log lists following entries

2025/09/15 15:49:45 [error] 682685#0: *37903 client intended to send too large body: 3529036 bytes, client: 100.100.100.100, server: , request: "POST /admin/asset/add-asset?parentId=1&dir=&allowOverwrite=0 HTTP/2.0", host: "xyz.com", referrer: ".xyz Domain Names | Join Generation XYZ"​

So we had to manually add client_max_body_size to /etc/nginx.conf or /etc/nginx/plesk.conf.d/server.conf (IP Section).

We think, the following change in PPPM-15094 in server.conf is responsible for this: proxy_set_header Host $ip_default_host;

Are we missing something?

Best,
Markus

 

[Aleksei Fedorov]

Hello, yes, PPPM-15094 introduced those changes (proxy_set_header Host $ip_default_host;) in the nginx configs. But it's unclear for me what problem do you have?

 

[mvais]

The Problem is:

• Nginx uses new the default value of 1MB for client_max_body_size / so setting the client_max_body_size in nginx additional directives has no impact anymore
• Changing the Nginx setting Maximum allowed HTTP request body size in panel to for example 512MB has no impact anymore