openproject - using https

[acognard]

Dear all, i am facing issue while trying to run openproject in https !

Problems encountered:

Invalid host_name configuration

When accessing OpenProject via a hostname (e.g., px-openproject.chtiloft), the app responds with Invalid host_name configuration.

Tried setting OPENPROJECT_HOST_NAME in systemd override (override.conf) and /etc/default/openproject with multiple entries (hostname, container IP, localhost, 127.0.0.1), but the error persists.

Tested both via curl and browser; the error occurs when the Host header is the public hostname.

HTTPS mode mismatch

Direct access via IP (http://192.168.2.135:6000) works.

Access via HTTPS (https://192.168.2.135/openproject/) triggers a warning:

Your application is running with HTTPS mode set to http, but the request is an https request. You will need to set the following configuration value: OPENPROJECT_HTTPS=true

Setting OPENPROJECT_HTTPS=true in systemd override seems not to be picked up correctly by OpenProject.

Systemd override issues

Previous attempts to modify ExecStart and environment variables broke the service entirely (Failed to locate executable /opt/openproject/packager/packager).

The correct packager path does not exist in the current installation (which packager returns nothing), so custom ExecStart lines fail.

Testing observations

Curl tests with Host header variations show that OpenProject only works when Host matches the container IP directly. Hostnames always trigger the host_name error.

Environment variables set in systemd overrides are correctly listed via systemctl show, but OpenProject still rejects them.

Key points needing guidance from the community:

Correct way to configure OPENPROJECT_HOST_NAME for multiple hostnames / IPs in a LXC container setup.

How to ensure OpenProject picks up OPENPROJECT_HTTPS=true correctly with systemd.

Recommended method for enabling HTTPS via reverse proxy (Apache) without breaking OpenProject host validation.

Any caveats specific to the Proxmox community script installation path.