Nextcloud acces via internet

[DomeDD]

Hi, I'm new to TrueNAS but I think I did an o.k. job setting up my TrueNAS SCALE system.
OS: TrueNAS-SCALE-23.10.2
CPU: AMD Ryzen 5 5600G
RAM: 16 GB
Drives: 120 GB SSD | 250 GB SSD | 3x 4 TB NAS-HDD

I have already successfully set up pihole and currently I'm struggling making nextcloud available via internet.
I'm trying to set up Nextcloud fromTrueNAS catalog, not TrueCharts!

I own a domain, let's call it mydomain.com. I've created a cname record to point to my ddns domain (server.mydomain.com -> ddns.domain.net -> myPublicIP). In my router I enabled portforwarding for the TrueNAS system (port 9001 for nextcloud, port 20720 for pihole(just for connectivity testing purposes)).
When accessing nextcloud via internet https://server.domain.com:9001/login, I'm landing on the nextcloud login page. Entering my credentials, I won't get redirected to the nextcloud dashboard. I'm stuck in the authentication process. Sometimes I will get redirected to the local LAN IP of TrueNAS.
A valid Let's encrypt certificate is installed and used by nextcloud. There is no certificate error when accessing nextcloud via internet.

I followed the official guide and read many posts in this forum and tried so many things…

• Yes, I re-applied permissions for www-data to the datasets
• Yes, I tried adding environment arguments to the setup process like this:

NEXTCLOUD_TRUSTED_DOMAINS
server.mydomain.com

OVERWRITEHOST
server.mydomain.com

OVERWRITECLIURL
https://server.domain.com:9001

OVERWRITEPROTOCOL
https

• Yes, I know I'm not using a proxy, this is just a poc. Proxy will be set up later

When accessing pihole via internet (http://server.mydomain.com:20270/admin/login.php) I am able to access and use it, so there has to be a problem with my nextcloud configuration, I can't seem to find.

Appreciate any help or ideas :)

 

[DomeDD]

I found the solution...
Nextcloud isn't happy when selecting a certificate in the creation process of the app. But then there is no https enabled so I connected my Cloudflare tunnel to my TrueNAS machine, set up nextcloud from ground up and now everything is working fine.

Full guide coming...

 

[PyCoder]

I'm using the linuxserver.io Nextcloud build + MariaDB and nignx-proxy-manager with lets encrypt. No issues :)