I’ve been using duplicati for a couple years now in Docker containers without issue. I recently updated and restarted, and now I can’t get to the web interface and just get the standard can’t connect message of the web server. Inside the container I see that mono is using up 100% of the CPU. I tried starting a brand new instance of duplicati with blank folders and those also failed to start. I tried a different machine I have at work and that also failed to start using blank folders. I tried yet a third machine with blank folders and it started on that one, but when I go to the web interface I see the duplicati blue dialog box with “The connection to the server is lost” Eventually on that fresh instance mono settled down to 1% CPU usage but on my main machine with my existing duplicati folder it is still stuck at 100% cpu.
This is my “test” command that fails when starting with only a blank folder at /home/kata/duplicati. I don’t see any instructions how to debug the container but I am happy to provide more logs. The docker logs look fine to me.
docker run -d --runtime=runc --name=duplicati --restart=always -e TZ=America/Los_Angeles -v /home/kata/duplicati/backups:/backups -v /home/kata/duplicati/config:/config -v /home/kata/duplicati/source:/source -v /home/kata:/kata -e PUID=1000 -e PGID=1000 -p 8200:8200 linuxserver/duplicati
.$ docker logs duplicati
[s6-init] making user provided files available at /var/run/s6/etc...exited 0.
[s6-init] ensuring user provided files have correct perms...exited 0.
[fix-attrs.d] applying ownership & permissions fixes...
[fix-attrs.d] done.
[cont-init.d] executing container initialization scripts...
[cont-init.d] 01-envfile: executing...
[cont-init.d] 01-envfile: exited 0.
[cont-init.d] 10-adduser: executing...
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GID/UID
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User uid: 1000
User gid: 1000
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[cont-init.d] 10-adduser: exited 0.
[cont-init.d] 30-config: executing...
[cont-init.d] 30-config: exited 0.
[cont-init.d] 99-custom-scripts: executing...
[custom-init] no custom files found exiting...
[cont-init.d] 99-custom-scripts: exited 0.
[cont-init.d] done.
[services.d] starting services
[services.d] done.
Here is the output using my test command on a system failing.
.$ docker exec -it duplicati ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.1 0.0 200 4 ? Ss 08:52 0:00 s6-svscan -t0
root 32 0.0 0.0 200 4 ? S 08:52 0:00 s6-supervise
root 240 0.0 0.0 200 4 ? S 08:52 0:00 s6-supervise
abc 243 0.1 0.1 163304 41660 ? Ssl 08:52 0:00 mono Duplicat
abc 260 99.8 0.0 151092 12520 ? R 08:52 2:06 mono Duplicat
abc 270 100 0.0 163304 18220 ? R 08:52 2:01 mono Duplicat
root 290 0.0 0.0 36072 3372 pts/0 Rs+ 08:54 0:00 ps aux
Here is the output I see in my main server with my existing duplicati folder. This is the one I really want to get working.
.$ docker exec -it duplicati ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 200 4 ? Ss 08:50 0:00 s6-svscan -t0
root 31 0.0 0.0 200 4 ? S 08:50 0:00 s6-supervise
root 239 0.0 0.0 200 4 ? S 08:50 0:00 s6-supervise
abc 242 0.0 0.2 163276 39136 ? Ssl 08:50 0:00 mono Duplicat
abc 260 100 0.7 1600700 125612 ? Sl 08:50 7:16 /usr/bin/mono
abc 294 96.6 0.0 150936 10440 ? R 08:57 0:13 /usr/bin/mono
root 315 0.0 0.0 36072 3196 pts/0 Rs+ 08:57 0:00 ps aux
I should note that when I first start the container, mono looks like mono Duplicati.Server.exe --webservice-interface=any --server-datafolder=/config --webservice-allowed-hostnames=* but then after a few minutes just settles on /usr/bin/mono running at 100%
Edit: On a side note I discovered a bug in this discourse tool. If your comment starts with $ and you try to use the preformatted text brackets it won’t actually format any of the text into a monospace font. I put a period in front of it so it would format correctly.