I have a fresh install of NC 14 on Ubuntu 18.04, which works great. It is on my bare domain, i.e. “mydomain.com”, not a subdomain. I installed collabora core on the same server at “subdomain.mydomain.com” according to the following guides: https://www.linuxbabe.com/cloud-storage/integrate-collabora-online-server-nextcloud-ubuntu-16-04 & https://www.kerstner.at/2017/09/setting-up-collabora-code-with-nextcloud-using-apache-reverse-proxy-on-debian-8-jessie/. I have also installed the collabora app w/in my nextcloud instance and am able to create new documents w/o issue. However, when I try to open a document to edit in in the browser I get an endless loading circle or a blank screen. The nextcloud tools at the top still work - I am able to navigate back to my folders, or open another app. However, the body of the page (where I should be editing the doc) remains blank.
I have looked through a number of posts and tried to troubleshoot the issue myself.
First, when I go to the collabora subdomain /hosting/discovery - I get the XML that shows my reverse proxy is working, just like the second tutorial says. So I think that is all good.
However, when I check the docker logs I get the following:
WRN WOPI host did not pass optional access_token_ttl| wsd/FileServer.cpp:611
ERR Cannot get file info from WOPI storage uri…
Followed by a few more timeout errors.
Finally, when I use nslookup from the server to the collabora subdomain it shows it at 127.0.0.53 - when I do the same from within the collabora docker image (looking at my bare domain) it shows it at 220.127.116.11 (google’s name server).
I apologize for my naiveté, this kind of server admin is new to me and I am trying to learn as I go. From what I can see, it feels like there is a DNS issue between my collabora docker image and my Nextcloud instance. I feel like the answer is probably something simple, like an edit to /etc/hosts either on the server or the docker image, or even both. However, I am not finding the answer in my research and I don’t want to just start editing config files in hopes that I stumble upon the answer. Any guidance is greatly appreciated. Thank you for your help!