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Topic starter
04/27/2026 08:39
Hello,
I am running Carbonio CE 26.3.0 on Ubuntu 24.04 (single-server setup).
Issue:
Mobile apps (Chats / Mobile login) fail from Internet with:
/zx/login/v3/auth/config → HTTP 502 (Connection to upstream refused)
However:
- Web UI works normally
- Mobile apps work when the client is inside the same LAN as the server
- Services are all running and “green”
Technical findings:
- carbonio-user-management is healthy and listening on an internal IP:
127.78.0.5:10000 (confirmed via ss -lntp)
- Envoy sidecar listens on 127.78.0.5:20000
- NGINX routes /zx/* through Envoy by design
Tests performed:
- Direct access to the backend does NOT expose Auth v3:
curl removed link
curl removed link
(no response (no JSON))
This confirms:
- Auth v3 endpoints are NOT exposed by carbonio-user-management directly
- Envoy is REQUIRED to publish /zx/login/v3/*
- There is no viable NGINX bypass/workaround for Auth v3
Observed behavior strongly suggests:
- Envoy does not mark the Auth v3 upstream as healthy in CE 26.3
- This only affects traffic coming from outside the LAN
- Results in consistent 502 errors for mobile apps
Has anyone else confirmed this behavior on CE 26.3 (Ubuntu 24.04)?
Is there a known issue or planned fix regarding Envoy/Auth v3 upstream health?
Thanks,
Giovanny.