I am on ghost. I can create the new topic and comment from ghost. But, last comments does not appear in ghost post.

@The-Worms You find the problem. Thank you very much! My browser cache was completly blocked. The button to empty the cache was disabled... thankfully, firefox have a fast repare fonctionnality to reinitialize the browser. And now, nodebb is working great!

So, this was the problem since 2 days...

but, why http://domainname.com -> redirect to http://www.domainname.com/ -> and work ? is this normal nginx behavior because the domain is not configured yet?

@The-Worms said in Problem with nginx reverse proxy and subdomain:

You are redirected to https ?

YES, http://forum.domainname.com is redirecting by itself. I didn't configured it to redirect.

@The-Worms said in Problem with nginx reverse proxy and subdomain:

Do you have an https on your domain ?

https is not installed on the server yet, because i reinstalled the server several times and i have to wait a week to get new ssl certificates from lets encrypt. So, it is a fresh installed server without ssl.

@The-Worms said in Problem with nginx reverse proxy and subdomain:

/etc/nginx/sites-available/forum.domainname.com

is same ?
/etc/nginx/sites-enable/forum.domainname.com

/etc/nginx/sites-enabled/forum.domainname.com is same thanks to a symlink

@The-Worms
I modified the files. Restart nginx and nodebb. Same problem.

did not work

I have some problems with nginx. I would like nodebb to work on "http://forum.domainname.com". i had followed the ubuntu installation tutorial. But, this is how nodebb is working now:

http://forum.domainname.com -> redirect to https://forum.domainname.com/ -> timeout ... (i don't know why https)
http://forum.domainname.com:4567 -> work
http://domainname.com:4567 -> work
EDIT: http://domainname.com -> redirect to http://www.domainname.com/ -> work

config.json

{
    "url": "http://forum.domainname.com",
    "secret": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
    "database": "mongo",
    "mongo": {
        "host": "127.0.0.1",
        "port": "27017",
        "username": "nodebb",
        "password": "mypasswd",
        "database": "nodebb",
        "uri": ""
    },
    "port": "4567"
}

/etc/nginx/sites-available/forum.domainname.com

server {
    listen 80;
    listen [::]:80;

    server_name forum.domainname.com;

    location / {
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header Host $http_host;
        proxy_set_header X-NginX-Proxy true;

        proxy_pass http://127.0.0.1:4567;
        proxy_redirect off;

        # Socket.IO Support
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }
}

Thank you in advance for your help

@PitaJ yesterday, i could not go on the settings page. i saw this warning, so i thought it was the problem.
I had run the command "./nodebb build" but the warning was always here. So, I was obsessed with the warning.
Finally, the command had solved the problem without me realizing it. I can access the settings page despite the warning.

Hello, fresh install nodebb v1.11.1, i have this message:

warn: [plugins/load] The following plugins may not be compatible with your version of NodeBB. This may cause unintended behaviour or crashing. In the event of an unresponsive NodeBB caused by this plugin, run `./nodebb reset -p PLUGINNAME` to disable it.
  * nodebb-plugin-blog-comments

Can i have some help, please? Thank you.