What is the maximum file size we can upload on discourse?

[Kanishk_Jaswal]

Hi all,

Curious to know what is the maximum allowed file size that can be uploaded on the platform?

Currently, we have it at 184 MB. However, when I try to upload a file of 40-50 MB it fails to upload.

Thanks in advance.
Kanishk

[merefield (Robert)]

You probably need to change your nginx config too

Image Uploading Size Show Exceeding Though It's Less

I guess the new update added a hint about fixing this, so here is the full guide for those who face the same issue… it’s all about nginx: 1. Go to nginx folder: cd /etc/nginx 2. Add this line to your nginx.conf file: http { ... client_max_body_size 4M; } This will allow nginx to accept files with a max size of 4 megabytes. 3. Restart nginx: If you’re paranoid like me use run systemctl restart nginx Or simply send the nginx restart signal by running nginx -s reload

[Ivan_Rapekas]

Sorry for bumping this topic. I tried everything to change max upload size but my instance allows only 1 (one) mb to attach. I played with 10, 20mb and defaults.

I got client_max_body_size 100m;:

1. using custom command `sed -i 's/client_max_body_size 10m;/client_max_body_size 100m;/g' /etc/nginx/conf.d/discourse.conf`
2. using param `upload_size: 100m` in app.yml
3. by hands inside the container

1 and 2 - I rebuilt app, 3 - reload nginx inside container.

This is a fresh installation, only official plugins. Custom things are: Office 365 login and self-signed certificate (because the server is located inside intranet, and Office 365 login requires https). Everything works: login, emailing, answering by email. But attachment size is about 1 mb max (both files and pictures). I allow * for filetypes. I have external proxy Nginx with the same setting om 100mb body size.

I really confused. I’ve been using Discourse for 4 years. Do I have incorrect settings or conflicts? Could somebody navigate me what to check first please?

[Kanishk_Jaswal]

Hi @merefield,

@Ivan_Rapekas is right. It just doesn’t work. Some backend restriction that just doesn’t allow us to increase upload size of a file.

[ondrej]

Changing Max Attachment Size

If you are on managed hosting, you should contact your hosting provider to change this setting. The below instructions only apply if you self host your own instance of Discourse. Here is what you need to do to allow more than 10mb for attachments upload. Connect to your server via SSH cd /var/discourse/ nano containers/app.yml Scroll down where it says db_default_text_search_config under params Add upload_size: 20m below db_default_text_search_config params: db_defaul…

Have you read through this?

[merefield (Robert)]

Yup that’s a better solution as imagine nginx config gets rebuilt every time which might be why the configuration is not persisted if you amend it directly

Initially (inside container):

Update app.yml to :

Post rebuild:

So perhaps that was your problem @Kanishk_Jaswal , it was being reset each rebuild?

[Ivan_Rapekas]

@ondrej

Have you read through this?

Sure. I researched all relevant topics. The strange thing is 1mb size. It would enough 10mb for me, but I can’t reach this.

@merefield

rebuilt every time

Thanks for this point, I checked it - seems settings are ok…

[Benjamin_D (Benjamin Decotte)]

@Ivan_Rapekas

The strange thing is 1mb size

indeed, and you said earlier “about” 1mb, even weirder.

@Ivan_Rapekas

the server is located inside intranet

Any possibility of an unusual firewall/router/network/vpn setting ? Does the app give you an error, or does the upload fail silently?

[Ivan_Rapekas]

@Benjamin_D

Does the app gives you an error, or does the upload fails silently?

Thank you for the support. I realized that external proxy might have incorrect body size setting. Just checked the log…

Seems that’s my fault. Hope I’ll fix it soon and return the correct setting for external Nginx.

[Ivan_Rapekas]

Thanks to all.

So, I have Nginx in front of Discourse. It has configs:

/etc/nginx/nginx.conf (default)
/etc/nginx/conf.d/discourse.conf (custom)

Both configs have server{} sections. First I put client_max_body_size 100m; in custom config. Actually the setting did not work, but I did not check proxy logs.

When I moved client_max_body_size 100m; to default config (parent config), the problem resolved.

So, Changing Max Attachment Size article is actual. The root cause was in external proxy setting, outside of Discourse which is the best .