Setting up collabora behind cloudflare domain and nginx reverseproxy

Installation & Configuration
1

I am having troubles setting up my collabora instance.
I have set up nextcloud.mydomain.com whoch worls fine.
I have created collabora.mydomain.com and a proxy host on nginx. In theory this should work, but it does not.
collaboramydomaincom results in a blank site, with the string “ok” written on it. However, colllaboramydomaincom/hosting/discovery errors out with 502 bad gateway (instead of the xml, which is working on my local LAN (same nginx setup with the DNS defined on the router)).
I have disabled cloudflare proxying (DNS only) and it still does not work.
Thank you for helping

2

Hello @MRodneyMcKay welcome to collabora online forum

  • collabora.mydomain.com gives a blank page with “ok” → This is expected behavior from the Collabora server root (/ responds with “ok”).
  • But collabora.mydomain.com/hosting/discovery returns a 502 Bad Gateway → This means Nginx couldn’t connect to the upstream Collabora service.
  • This works fine on your local network with router DNS → Confirms that Collabora is working correctly behind a local reverse proxy.

So the issue likely lies with your external reverse proxy configuration or network reachability (NAT, Docker, firewall) when accessed from the public internet.

Nginx Reverse Proxy for Collabora: Proxy settings — SDK https://sdk.collaboraonline.com/ documentation

For proxy setting see below thread, it has very similar setup as yours :slight_smile:

If still stuck, please share:

  • Your nginx config for collabora.mydomain.com
  • How you started Collabora (Docker run or Compose)
  • Output of curl http://localhost:9980/hosting/discovery from Nginx machine

I can then pinpoint the issue more precisely.

Thanks
Darshan

3

Managed to move forward.
Right now, everything works through cloudflare, i can get the /hosting/discovery xml.
I have added the cloudflare ips for wopi addresses.
But it still does not work, in collabora logs, i see this:
2025-06-16 09:13:22.448021+00:00wsd-00001-00032 2025-06-16 09:13:22.447660 +0000 [ websrv_poll ] ERR Failed to get settings json from [http://nextcloud.banya-tanya.me/index.php/apps/richdocuments/wopi/settings?type=systemconfig&access_token=SuDu7tQrXCimXNiie7trAKUjzB1X3OY0&fileId=-1] with status[Moved Permanently]| wsd/DocumentBroker.cpp:1869
2025-06-16 09:13:22.449493+00:00wsd-00001-00032 2025-06-16 09:13:22.449118 +0000 [ websrv_poll ] ERR #-1: Failed to install config [shared-http_nextcloud.banya-tanya.me/index.php/apps/richdocuments/wopi/settings-684ee39857196684ee1d843f33]| wsd/RequestVettingStation.cpp:209

I do not know how to solve this. IT seems a bit weird, because I use https, nginx as the reverseproxy. the address is https, but in the logs i see http