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Issue After PPPM-15094 - client_max_body_size set to 1MB

mvais

Basic Pleskian
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
 
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