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Cloudron Forum
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  3. Cloudron down after Ubuntu/Docker update (Docker service fails to start)

Cloudron down after Ubuntu/Docker update (Docker service fails to start)

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kerneldockerhostinger
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  • jamesJ james

    Hello @valexico and @osobo
    Thanks for that.
    Can you two please ssh into your Cloudron server and post the output of following command?

    docker --version
    osoboO Offline
    osoboO Offline
    osobo
    wrote on last edited by
    #9

    @james Docker version 29.1.5, build 0e6fee6

    1 Reply Last reply
    0
    • V Offline
      V Offline
      Valexico
      wrote on last edited by
      #10

      Same here
      Docker version 29.1.5, build 0e6fee6

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      • jamesJ Online
        jamesJ Online
        james
        Staff
        wrote on last edited by
        #11

        Hello @osobo and @valexico
        Thanks.
        Do you still have the /etc/systemd/system/docker.service.d/cloudron.conf file?
        Because on two of my Cloudron systems it is also Docker version 29.1.5, build 0e6fee6 and there was no issue with docker.

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        • V Offline
          V Offline
          Valexico
          wrote on last edited by
          #12

          No I deleted the file to fix the issue as described by @osobo

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          • V Offline
            V Offline
            Valexico
            wrote on last edited by
            #13

            my claude chat if it helps
            https://claude.ai/share/acd62c73-b4e5-4e49-9e84-7e06d4229815

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            1
            • osoboO Offline
              osoboO Offline
              osobo
              wrote on last edited by
              #14

              Same here. The file has been deleted with the fix.

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              • J Offline
                J Offline
                jdbaker
                wrote on last edited by
                #15

                For what its worth, the issue occurred for me last Thursday night after using the reboot option in the dashboard, as instructed by the typical Cloudron notification. The VPS came back up, but the Cloudron dashboard was unreachable. In the VPS terminal, the troubleshooter showed docker was not starting. Two additional VPS reboots did not resolve it, so I simply rolled back, and then everything appeared to be working.

                Later that night, Cloudron updated from 9.1.5 to 9.1.6.

                When another reboot notification appeared yesterday, I took another snapshot of the VPS before rebooting, and everything came back up just fine.

                However, I did NOT delete my cloudron.conf file, and it still exists.

                My docker version is 29.1.5, build 0e6fee6.

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                • V Offline
                  V Offline
                  Valexico
                  wrote on last edited by
                  #16

                  @james
                  So, should we do something to restore our cloudron to nominal configuration ? Recreate this cloudron.conf file somehow ?

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                  • jamesJ Online
                    jamesJ Online
                    james
                    Staff
                    wrote on last edited by
                    #17

                    Hello @valexico

                    @Valexico said:

                    So, should we do something to restore our cloudron to nominal configuration ? Recreate this cloudron.conf file somehow ?

                    That would be best I think.
                    If this would reproduce the previous issue, that be interesting to get an understanding what is causing this.

                    The default content from /etc/systemd/system/docker.service.d/cloudron.conf is:

                    [Service]
ExecStart=
ExecStart=/usr/bin/dockerd -H fd:// --log-driver=journald --exec-opt native.cgroupdriver=cgroupfs --storage-driver=overlay2 --experimental --ip6tables --userland-proxy=false
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                    • V Offline
                      V Offline
                      Valexico
                      wrote on last edited by
                      #18

                      hi @james

                      I tried to restore this file but docker won't start.

                      Claude analysis :

                      • systemd (file cloudron.conf) passes --log-driver=journald
                      • But /etc/docker/daemon.json also defines log-driver: json-file

                      So what is the official fix ?

                      Here are some logs :

                      tail -n 40 ../yellowtent/platformdata/logs/box.log
  stdout: '',
  stdoutString: '',
  stdoutLineCount: 0,
  stderr: 'Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?\n',
  stderrString: 'Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?\n',
  stderrLineCount: 1,
  code: 1,
  signal: null,
  timedOut: false,
  terminated: false
}
2026-04-20T20:18:28.212Z shell: docker: docker update --memory 268435456 --memory-swap -1 redis-9d1726c8-d217-45ab-ac30-0ec5c01c4cf0 errored BoxError: docker exited with code 1 signal null
    at ChildProcess.<anonymous> (file:///home/yellowtent/box/src/shell.js:70:23)
    at ChildProcess.emit (node:events:508:28)
    at maybeClose (node:internal/child_process:1101:16)
    at Socket.<anonymous> (node:internal/child_process:457:11)
    at Socket.emit (node:events:508:28)
    at Pipe.<anonymous> (node:net:346:12) {
  reason: 'Shell Error',
  details: {},
  stdout: '',
  stdoutString: '',
  stdoutLineCount: 0,
  stderr: 'Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?\n',
  stderrString: 'Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?\n',
  stderrLineCount: 1,
  code: 1,
  signal: null,
  timedOut: false,
  terminated: false
}
2026-04-20T20:18:28.213Z cron: handleAutoupdateConfigChanged: schedule - 00 00 1,2,3,4,5 * * 0,4/Europe/Paris, policy - platform_and_apps
2026-04-20T20:18:28.215Z cron: Dynamic DNS setting changed to false
2026-04-20T20:18:28.216Z dockerproxy: start: listening on 172.18.0.1:3003
2026-04-20T20:18:28.216Z From uncaughtException handler.
2026-04-20T20:18:28.216Z Error: listen EADDRNOTAVAIL: address not available 172.18.0.1:3003
2026-04-20T20:18:28.216Z     at Server.setupListenHandle [as _listen2] (node:net:1918:21)
2026-04-20T20:18:28.216Z     at listenInCluster (node:net:1997:12)
2026-04-20T20:18:28.216Z     at node:net:2206:7
2026-04-20T20:18:28.216Z     at process.processTicksAndRejections (node:internal/process/task_queues:89:21)

                      sudo journalctl -u docker --since "today" | grep -A5 "error\|Error\|failed\|Failed" | head -60
Apr 20 09:14:20 srv565755 dockerd[928]: time="2026-04-20T09:14:20.051807769Z" level=warning msg="ShouldRestart failed, container will not be restarted" container=4f0cb8c35e7ba64d6a081361646cb651cc3956442e62c97946f0d15edd6de455 daemonShuttingDown=false error="restart canceled" execDuration=13h52m56.033484743s exitStatus="{0 2026-04-20 09:14:19.681121204 +0000 UTC}" hasBeenManuallyStopped=true restartCount=0
Apr 20 09:16:48 srv565755 dockerd[928]: time="2026-04-20T09:16:48.421429471Z" level=info msg="Configured log driver does not support reads, enabling local file cache for container logs" container=951df08d2fe64f854504c7f945d526f99347a3b7ffc6b5742479f18ee8595776 driver=syslog
Apr 20 09:16:48 srv565755 dockerd[928]: time="2026-04-20T09:16:48.647044948Z" level=info msg="Skipping check for route to send NA, EMSGSIZE" eid=587f20e087dc ep=1c5d0773-9eca-48f8-945e-83733391299d net=cloudron nid=b08cee04d967
Apr 20 09:16:48 srv565755 dockerd[928]: time="2026-04-20T09:16:48.653269180Z" level=info msg="sbJoin: gwep4 ''->'587f20e087dc', gwep6 ''->'587f20e087dc'" eid=587f20e087dc ep=1c5d0773-9eca-48f8-945e-83733391299d net=cloudron nid=b08cee04d967
Apr 20 11:33:17 srv565755 dockerd[928]: time="2026-04-20T11:33:17.566840739Z" level=info msg="ignoring event" container=951df08d2fe64f854504c7f945d526f99347a3b7ffc6b5742479f18ee8595776 module=libcontainerd namespace=moby topic=/tasks/delete type="*events.TaskDelete"
Apr 20 11:33:17 srv565755 dockerd[928]: time="2026-04-20T11:33:17.626250628Z" level=warning msg="ShouldRestart failed, container will not be restarted" container=951df08d2fe64f854504c7f945d526f99347a3b7ffc6b5742479f18ee8595776 daemonShuttingDown=false error="restart canceled" execDuration=2h16m29.209514787s exitStatus="{0 2026-04-20 11:33:17.50260464 +0000 UTC}" hasBeenManuallyStopped=true restartCount=0
Apr 20 11:33:31 srv565755 dockerd[928]: time="2026-04-20T11:33:31.302996371Z" level=info msg="Configured log driver does not support reads, enabling local file cache for container logs" container=5cd41c6952e0e4a57df020a068ba8d8ad03a1962cf5166c16def923db4a19678 driver=syslog
Apr 20 11:33:31 srv565755 dockerd[928]: time="2026-04-20T11:33:31.544418039Z" level=info msg="Skipping check for route to send NA, EMSGSIZE" eid=cc6732021dd2 ep=1c5d0773-9eca-48f8-945e-83733391299d net=cloudron nid=b08cee04d967
Apr 20 11:33:31 srv565755 dockerd[928]: time="2026-04-20T11:33:31.550239968Z" level=info msg="sbJoin: gwep4 ''->'cc6732021dd2', gwep6 ''->'cc6732021dd2'" eid=cc6732021dd2 ep=1c5d0773-9eca-48f8-945e-83733391299d net=cloudron nid=b08cee04d967
Apr 20 20:17:06 srv565755 systemd[1]: Stopping docker.service - Docker Application Container Engine...
Apr 20 20:17:06 srv565755 dockerd[928]: time="2026-04-20T20:17:06.327530091Z" level=info msg="Processing signal 'terminated'"
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.546853647Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.555695229Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.555782219Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.555813540Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.566229495Z" level=info msg="ignoring event" container=0b8f6fb173a1d0e2d4dedcbfba65145ed2a57c720caab9bbe67f404771fc0c88 module=libcontainerd namespace=moby topic=/tasks/delete type="*events.TaskDelete"
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.568576383Z" level=info msg="ignoring event" container=b84eb548ee71992483f45e56428929b79bcc8aad1f7023b195c60f659780d168 module=libcontainerd namespace=moby topic=/tasks/delete type="*events.TaskDelete"
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.582046353Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.582069903Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.582693859Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.589390793Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.632285602Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.659873666Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.704349637Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.730620892Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.730674482Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.730804793Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.751950246Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.766076720Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.774481318Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.792120681Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.792250913Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.820107909Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.842432751Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.842499741Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.842352570Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.889893867Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.898854650Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.905530513Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.914025273Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.914073723Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.915739917Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.917869824Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.921901237Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.921959517Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.940298087Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.940385708Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.940415097Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.957654048Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.984816919Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.984879059Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:07 srv565755 dockerd[928]: time="2026-04-20T20:17:07.984904639Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:08 srv565755 dockerd[928]: time="2026-04-20T20:17:08.002561723Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:08 srv565755 dockerd[928]: time="2026-04-20T20:17:08.002633953Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:08 srv565755 dockerd[928]: time="2026-04-20T20:17:08.002662174Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:08 srv565755 dockerd[928]: time="2026-04-20T20:17:08.002688504Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:08 srv565755 dockerd[928]: time="2026-04-20T20:17:08.023282142Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:08 srv565755 dockerd[928]: time="2026-04-20T20:17:08.032926700Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:08 srv565755 dockerd[928]: time="2026-04-20T20:17:08.052743052Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
Apr 20 20:17:08 srv565755 dockerd[928]: time="2026-04-20T20:17:08.052817351Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=
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                      • jamesJ Online
                        jamesJ Online
                        james
                        Staff
                        wrote on last edited by
                        #19

                        Hello @valexico
                        So this is the actuall error:

                        Apr 20 20:17:08 srv565755 dockerd[928]: time="2026-04-20T20:17:08.052817351Z" level=error msg="Error writing log message" driver=syslog error="dial unix /home/yellowtent/platformdata/logs/syslog.sock: connect: no such file or directory" message=

                        Can you please check the status of:

                        systemctl status cloudron-syslog.service
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                        • V Offline
                          V Offline
                          Valexico
                          wrote on last edited by
                          #20

                          hi @james

                          Here the status on my fixed (cloudron.conf deleted). I can't check with the error as this server is used in production... I would have to test at night this not very convenient

                          systemctl status cloudron-syslog.service
WARNING: terminal is not fully functional
Press RETURN to continue
● cloudron-syslog.service - Cloudron Syslog
     Loaded: loaded (/etc/systemd/system/cloudron-syslog.service; enabled; preset: enabled)
     Active: active (running) since Mon 2026-04-20 20:20:34 UTC; 12h ago
   Main PID: 734 (MainThread)
      Tasks: 11 (limit: 19092)
     Memory: 71.9M (peak: 72.4M)
        CPU: 9.000s
     CGroup: /system.slice/cloudron-syslog.service
             └─734 node /home/yellowtent/box/syslog.js
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                          • jamesJ Online
                            jamesJ Online
                            james
                            Staff
                            wrote on last edited by
                            #21

                            Hello @valexico
                            Can you check if the sock file does really not exist?

                            /home/yellowtent/platformdata/logs/syslog.sock
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                            • jamesJ james

                              Hello @valexico
                              Can you check if the sock file does really not exist?

                              /home/yellowtent/platformdata/logs/syslog.sock
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                              Valexico
                              wrote on last edited by
                              #22

                              @james

                              ls -l /home/yellowtent/platformdata/logs/syslog.sock
srwxr-xr-x 1 yellowtent yellowtent 0 Apr 20 20:20 /home/yellowtent/platformdata/logs/syslog.sock
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                              • jamesJ james

                                Hello @valexico
                                Can you check if the sock file does really not exist?

                                /home/yellowtent/platformdata/logs/syslog.sock
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                                Valexico
                                wrote on last edited by
                                #23

                                @james
                                For what it's worth, it is also an Hostinger VPS

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                                • osoboO osobo

                                  Hello all,

                                  Just wanted to share what happened to me and the way to fix it in case you experience the same issue. @cloudron_admin please delete the post if not relevant.

                                  After applying recent Ubuntu security updates and rebooting, my Cloudron instance became unreachable.

                                  cloudron-support --troubleshoot

                                  showed Docker was down, and

                                  systemctl start docker

                                  failed while running dockerd manually worked fine.

                                  I've worked it out with the support of ChatGPT. Root cause : An outdated Cloudron systemd override file:

                                  /etc/systemd/system/docker.service.d/cloudron.conf

                                  This override replaces Docker’s default ExecStart and uses older flags (like cgroupfs) that are no longer compatible with newer Docker versions. As a result, Docker fails to start via systemd.

                                  Fix : Remove the override and reload systemd:

                                  sudo rm /etc/systemd/system/docker.service.d/cloudron.conf
sudo systemctl daemon-reexec
sudo systemctl daemon-reload
sudo systemctl restart docker

                                  Verify Docker is running:

                                  systemctl status docker

                                  Then restart Cloudron:

                                  sudo systemctl restart box

                                  Result

                                  Docker starts normally again, containers come back up, and the Cloudron dashboard becomes accessible.

                                  Notes
                                  Modern Docker versions already handle most of the options that the override was forcing.
                                  Removing the override lets Docker run with its correct defaults (including proper cgroup handling).
                                  This issue may appear after unattended upgrades or manual system updates.

                                  Hope this helps anyone running into the same issue 👍

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                                  ntnsndr
                                  wrote on last edited by
                                  #24

                                  @osobo Thank you so much for posting this! I also had the same issue on Hostinger this morning after a manual reboot, and the OP instructions worked.

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                                    Valexico
                                    wrote on last edited by
                                    #25

                                    @james
                                    Any idea what could be specific to Hostinger in this issue ? I mean It's just a raw ubuntu installation in my case where I installed manually Cloudron

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                                    • jamesJ Online
                                      jamesJ Online
                                      james
                                      Staff
                                      wrote on last edited by
                                      #26

                                      Hello @ntnsndr and @valexico
                                      That two times a Hostinger set up is having the same issue is not a coincidence.
                                      Still, I am not sure what is going on.
                                      The file in question exists. So why does the docker daemon suddenly act in this way.

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                                        Valexico
                                        wrote on last edited by
                                        #27

                                        Hi @james
                                        So what should we do at the end? My cloudron server is quite critical for my business, and deleting a config file to make it up sounds a bit scary. I would be glad to have an official fix or recommendation on this.

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                                        • jamesJ Online
                                          jamesJ Online
                                          james
                                          Staff
                                          wrote on last edited by
                                          #28

                                          Hello @valexico
                                          Can you please write a mail to support@cloudron.io and enable remote support?
                                          Also, please give us a timeframe when we can restart processes like the docker and the box service to analyse the issue.

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