Server stopped working / Port 55413 may already be in use

1

Hello.

I have this problem after Ubuntu 18.04 to 20.04 upgrade. Windows clients say they are connected, but server says they are not. No backup jobs running. UrBackup web UI works only until I try to save settings or start a job, after that web UI hangs and I get these errors:

# urbackup logs
2020-11-03 14:36:16: ERROR: InternetService: Creating v6 SOCKET failed
2020-11-03 14:36:16: ERROR: Creating ipv6 SOCKET failed. Port 55413 may already be in use

# nginx logs
020/11/03 14:37:01 [error] 8754#8754: *35 connect() failed (111: Connection refused) while connecting to upstream, client: 172.30.104.11, server: , request: "POST /x?a=settings HTTP/1.1", upstream: "fastcgi://127.0.0.1:55413", host: "172.30.104.101", referrer: "https://172.30.104.101/"

UrBackup server works in Internet mode. Exactly the same setup works well on other servers.

What I have tried so far, to no avail:

  • disable firewall
  • fresh install 20.04
  • reinstall clients
  • using internal HTTP server and Nginx HTTPS
  • disabling/enabling ipv6 on the server

Any ideas, please?

2

Problem solved.

3

Can you share how you solved this? I think I have similar issue where my nginx reverse proxy works fine forwarding to 55413 and then suddenly stops working. Love urbackup so would love to get this one irregularity resolved.

4

Yes but it won’t help you much.
As a next step I provisioned a new server, both hardware and software, and for some reason it works. Don’t really understand why because the configuration is managed by Ansible and it was exactly the same :thinking: So I scrapped the old one as its’ time was near anyways.