Voici le contenu de nginx:
On va voir quel fichier en prems ?
uniquement nginx.conf
je viensde trouver ce tuto, je ne sais pas si ça peut etre utilse dans votre cas : How to Install NextCloud on OpenMediVault 5 with Remote Access and SSL - DB Tech
Version 2023/04/13 - Changelog: History for root/defaults/nginx/nginx.conf.sample - linuxserver/docker-baseimage-alpine-nginx · GitHub
Based on alpine defaults
nginx.conf « nginx « main - aports - Alpine packages build scripts
user abc;
Set number of worker processes automatically based on number of CPU cores.
include /config/nginx/worker_processes.conf;
Enables the use of JIT for regular expressions to speed-up their processing.
pcre_jit on;
Configures default error logger.
error_log /config/log/nginx/error.log;
Includes files with directives to load dynamic modules.
include /etc/nginx/modules/*.conf;
Include files with config snippets into the root context.
include /etc/nginx/conf.d/*.conf;
events {
# The maximum number of simultaneous connections that can be opened by
# a worker process.
worker_connections 1024;
}
http {
# Includes mapping of file name extensions to MIME types of responses
# and defines the default type.
include /etc/nginx/mime.types;
default_type application/octet-stream;
# Name servers used to resolve names of upstream servers into addresses.
# It's also needed when using tcpsocket and udpsocket in Lua modules.
#resolver 1.1.1.1 1.0.0.1 2606:4700:4700::1111 2606:4700:4700::1001;
include /config/nginx/resolver.conf;
# Don't tell nginx version to the clients. Default is 'on'.
server_tokens off;
# Specifies the maximum accepted body size of a client request, as
# indicated by the request header Content-Length. If the stated content
# length is greater than this size, then the client receives the HTTP
# error code 413. Set to 0 to disable. Default is '1m'.
client_max_body_size 0;
# Sendfile copies data between one FD and other from within the kernel,
# which is more efficient than read() + write(). Default is off.
sendfile on;
# Causes nginx to attempt to send its HTTP response head in one packet,
# instead of using partial frames. Default is 'off'.
tcp_nopush on;
# all ssl related config moved to ssl.conf
# included in server blocks where listen 443 is defined
# Enable gzipping of responses.
#gzip on;
# Set the Vary HTTP header as defined in the RFC 2616. Default is 'off'.
gzip_vary on;
# Helper variable for proxying websockets.
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
# Sets the path, format, and configuration for a buffered log write.
access_log /config/log/nginx/access.log;
# Includes virtual hosts configs.
include /etc/nginx/http.d/*.conf;
include /config/nginx/site-confs/*.conf;
}
daemon off;
pid /run/nginx.pid;
tout est bon, c’est vraiment bizarre
# Causes nginx to attempt to send its HTTP response head in one packet,
# instead of using partial frames. Default is 'off'.
tcp_nopush on;
Cette section, sur off nginx diviserait en plusieurs paquets ?
essayez sur off et redémarrer nginx mais le problème ne devrait pas venir de la
effectivement, ça vient pas de là… même résultat
Merci encore @Mageunic
En fait la bonne commande est : cd /etc/php/8.1/fpm/ (il manquait le / entre php et 8.1)
Voilà les valeurs trouvées :
upload_max_filesize = 2M
max_file_uploads = 20
Quelles nouvelles valeurs mettre à la place ?
Bonjour Felipe! Encore désolé d’avoir spoilé ton sujet… 
chez moi ces valeurs sont a 10240M e 3 il me semble
Je ne crois pas. Chez moi il fait partie de swag. Je n’ai pas croisé nginx ailleurs
suis en train justement de suivre le tuto vidéo…
il a dans nextcloud → administration un onglet tout en bas à gauche “system” lui montrant php limité à 2 Mb , je n’ai pas cet onglet. (Minute 20:46 dans la vidéo)
Oui c’est bien nginx
il faut aussi veiller a ce que client_max_body_size soit a 0
Vidéo suivi de A à Z et tout essayé comme lui : pas de solution. 
je ne vois pas d’où peut venir le problème …
Ca y est, ça ne marche plus du tout … 
502 Bad Gateway - génial …
quelle est la bonne syntax :
max_body_size 0
max_body_size 0G