Use opencloud as webDAV for backup GrapheneOS

[zero0n3]

hi

my idea would be this:

install opencloud on raspberry pi in LAN (not accessible from the outside except via VPN) and use it as a webDAV server to perform backups of the mobile phone on which GrapheneOS is installed and which uses webdav to backup settings and apps.

I installed the version of opencloud indicated in the docker compose local documentation.

I access the server

I create a user

I create a space for the user, and retrieve the webdav address

At that point I change the domain (inserting the IP of the raspberry instead of the domain) and load it into the phone settings (url + username + password) but every time I get the 404 error.

And it is the same that I get if I connect to that address from a PC. If instead I use the DNS indicated in the guide, on the PC I can but on the mobile phone, not being able to force the DNS by routing it to the IP of the raspberry, no.

How can I then use the raspberry IP instead of the domain name on opencloud?

thanks

[mammuth]

Hijacking your thread because I'm also struggling to get graphene/seedvault backups via WebDAV to work.
My issue is different though – I receive a a 401 error, when pasting the full webdav URL of a folder and username+password into the backup screen.

The opencloud logs – there is one suspicious warning in there:

opencloud-1      | {"level":"info","service":"proxy","proto":"HTTP/1.1","request-id":"53b3bcf904fc/pfKpvaurf2-000614","traceid":"7ee11073cabcce1e8d9a81235217c50a","remote-addr":"93.104.69.219","method":"OPTIONS","status":204,"path":"/remote.php/dav/spaces/758927f3-62b3-4715-aea1-73ef80e2e75b$1749c838-ecd4-4a09-9323-cb24de9a3940/Graphene/","duration":0.316177,"bytes":0,"time":"2025-10-02T23:27:11Z","line":"github.com/opencloud-eu/opencloud/services/proxy/pkg/middleware/accesslog.go:34","message":"access-log"}
opencloud-1      | {"level":"info","service":"storage-system","host.name":"53b3bcf904fc","pkg":"rgrpc","traceid":"f3812e153e3a5352532311605af8096d","time":"2025-10-02T23:27:11Z","line":"github.com/opencloud-eu/reva/v2@v2.38.0/internal/grpc/services/authprovider/authprovider.go:146","message":"user idp:\"internal\" opaque_id:\"554ac7ae-5952-4843-8697-c142f0a7853d\" type:USER_TYPE_PRIMARY authenticated"}
opencloud-1      | {"level":"info","service":"storage-system","host.name":"53b3bcf904fc","pkg":"rgrpc","traceid":"f3812e153e3a5352532311605af8096d","data-server":"http://localhost:9216/data","ref":{"resource_id":{"opaque_id":"jsoncs3-appauth-data","space_id":"jsoncs3-appauth-data"},"path":"./fd1f275e-0b9d-44bf-8afc-014279b96c8c.json"},"time":"2025-10-02T23:27:11Z","line":"github.com/opencloud-eu/reva/v2@v2.38.0/internal/grpc/services/storageprovider/storageprovider.go:296","message":"file download"}
opencloud-1      | {"level":"warn","service":"storage-system","host.name":"53b3bcf904fc","pkg":"rhttp","traceid":"ad77d5b499da3a699e86f3567f2ca09b","host":"127.0.0.1","method":"GET","uri":"/data/spaces/jsoncs3-appauth-data%21jsoncs3-appauth-data/fd1f275e-0b9d-44bf-8afc-014279b96c8c.json","url":"/fd1f275e-0b9d-44bf-8afc-014279b96c8c.json","proto":"HTTP/1.1","status":404,"size":0,"start":"02/Oct/2025:23:27:11 +0000","end":"02/Oct/2025:23:27:11 +0000","time_ns":115260,"time":"2025-10-02T23:27:11Z","line":"github.com/opencloud-eu/reva/v2@v2.38.0/internal/http/interceptors/log/log.go:112","message":"http"}
opencloud-1      | {"level":"info","service":"proxy","proto":"HTTP/1.1","request-id":"53b3bcf904fc/pfKpvaurf2-000616","traceid":"452ffc7ffea445f5531a94de8d0b4a30","remote-addr":"93.104.69.219","method":"PROPFIND","status":401,"path":"/remote.php/dav/spaces/758927f3-62b3-4715-aea1-73ef80e2e75b$1749c838-ecd4-4a09-9323-cb24de9a3940/Graphene/.SeedVaultAndroidBackup","duration":8.452036,"bytes":211,"time":"2025-10-02T23:27:11Z","line":"github.com/opencloud-eu/opencloud/services/proxy/pkg/middleware/accesslog.go:34","message":"access-log"}

[mammuth]

Update: Apparently the issue is caused by using my user's password. Using an app token works 🎉

[laleeroy]

Update: Apparently the issue is caused by using my user's password. Using an app token works 🎉

Thank you for the info, Im planning to install opencloud as well just to use seedvault, btw are you using davx5 mount (third party app) or the native webdav connection from seedvault?

[zero0n3]

@laleeroy davx5 mount. working well