Error 400 in backup process with Ionos S3 Object Storage

[dsp76]

Moved it to another time, made sure no update processes are overlapping. Still:

"Backuptask crashed\n at runBackupUpload"

As mentioned before - there was no error in the log at Ionos S3.

The root cause may be this:

Sep 10 04:00:28 box:shell backuptask: /usr/bin/sudo -S -E --close-from=4 /home/yellowtent/box/src/scripts/backupupload.js snapshot/app_UUID tgz {"localRoot":"/home/yellowtent/appsdata/UUID","layout":[]} errored BoxError: backuptask exited with code 1 signal null
Sep 10 04:00:28 at ChildProcess.<anonymous> (/home/yellowtent/box/src/shell.js:137:19)
Sep 10 04:00:28 at ChildProcess.emit (node:events:519:28)
Sep 10 04:00:28 at ChildProcess._handle.onexit (node:internal/child_process:294:12) {
Sep 10 04:00:28 reason: 'Shell Error',
Sep 10 04:00:28 details: {},
Sep 10 04:00:28 code: 1,
Sep 10 04:00:28 signal: null

System log:

{
  "taskId": "7060",
  "errorMessage": "Backuptask crashed",
  "timedOut": false,
  "backupId": null
}

The Problem: The system Backup log still shows the complete number of apps (supposed to be backed up). Checking them shows, they havn't been backed up. Looks like, that instead of only one task crashed, the complete backup task crashed and ended the complete operation in the same minute it started, @nebulon ...

[joseph]

@dsp76 I have marked this as unsolved. Is there nothing else in the task/backup logs? i.e right above the crash messages.

[dsp76]

Hi @joseph - the complete log is in #8 https://forum.cloudron.io/topic/14253/error-400-in-backup-process-with-ionos-s3-object-storage/8?_=1757661856982

This is todays error log of the backup task:

Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg3.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-1024x335.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-1200x393.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-150x150.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-1536x502.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-177x142.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-200x65.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-300x214.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-300x98.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-320x202.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-400x131.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-460x295.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-540x272.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-600x196.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-669x272.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-66x66.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-700x441.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-768x251.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-800x262.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4-940x400.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg4.jpg file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-1024x342.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-1200x401.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-150x150.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-1536x513.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-177x142.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-200x67.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-2048x684.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-300x100.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-300x214.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-320x202.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-400x134.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-460x295.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-540x272.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-600x200.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-669x272.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-66x66.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-700x441.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-768x256.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-800x267.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-940x400.png file
Sep 12 04:17:21 box:backupformat/tgz addToPack: added ./data/public/wp-content/uploads/2024/03/testbg5-scaled.jpg file
Sep 12 04:17:21 /home/yellowtent/box/node_modules/aws-sdk/lib/services/s3.js:712
Sep 12 04:17:21 resp.error = AWS.util.error(new Error(), {
Sep 12 04:17:21 ^
Sep 12 04:17:21
Sep 12 04:17:21 400: null
Sep 12 04:17:21 at Request.extractError (/home/yellowtent/box/node_modules/aws-sdk/lib/services/s3.js:712:35)
Sep 12 04:17:21 at Request.callListeners (/home/yellowtent/box/node_modules/aws-sdk/lib/sequential_executor.js:106:20)
Sep 12 04:17:21 at Request.emit (/home/yellowtent/box/node_modules/aws-sdk/lib/sequential_executor.js:78:10)
Sep 12 04:17:21 at Request.emit (/home/yellowtent/box/node_modules/aws-sdk/lib/request.js:686:14)
Sep 12 04:17:21 at Request.transition (/home/yellowtent/box/node_modules/aws-sdk/lib/request.js:22:10)
Sep 12 04:17:21 at AcceptorStateMachine.runTo (/home/yellowtent/box/node_modules/aws-sdk/lib/state_machine.js:14:12)
Sep 12 04:17:21 at /home/yellowtent/box/node_modules/aws-sdk/lib/state_machine.js:26:10
Sep 12 04:17:21 at Request.<anonymous> (/home/yellowtent/box/node_modules/aws-sdk/lib/request.js:38:9)
Sep 12 04:17:21 at Request.<anonymous> (/home/yellowtent/box/node_modules/aws-sdk/lib/request.js:688:12)
Sep 12 04:17:21 at Request.callListeners (/home/yellowtent/box/node_modules/aws-sdk/lib/sequential_executor.js:116:18) {
Sep 12 04:17:21 code: 400,
Sep 12 04:17:21 region: null,
Sep 12 04:17:21 time: 2025-09-12T02:17:21.579Z,
Sep 12 04:17:21 requestId: null,
Sep 12 04:17:21 extendedRequestId: undefined,
Sep 12 04:17:21 cfId: undefined,
Sep 12 04:17:21 statusCode: 400,
Sep 12 04:17:21 retryable: false,
Sep 12 04:17:21 retryDelay: 20000
Sep 12 04:17:21 }
Sep 12 04:17:21
Sep 12 04:17:21 Node.js v20.18.0
Sep 12 04:17:21 box:shell backuptask: /usr/bin/sudo -S -E --close-from=4 /home/yellowtent/box/src/scripts/backupupload.js snapshot/app_{UUID} tgz {"localRoot":"/home/yellowtent/appsdata/{UUID}","layout":[]} errored BoxError: backuptask exited with code 1 signal null
Sep 12 04:17:21 at ChildProcess.<anonymous> (/home/yellowtent/box/src/shell.js:137:19)
Sep 12 04:17:21 at ChildProcess.emit (node:events:519:28)
Sep 12 04:17:21 at ChildProcess.emit (node:domain:488:12)
Sep 12 04:17:21 at ChildProcess._handle.onexit (node:internal/child_process:294:12) {
Sep 12 04:17:21 reason: 'Shell Error',
Sep 12 04:17:21 details: {},
Sep 12 04:17:21 code: 1,
Sep 12 04:17:21 signal: null
Sep 12 04:17:21 }
Sep 12 04:17:21 box:backuptask runBackupUpload: backuptask crashed BoxError: backuptask exited with code 1 signal null
Sep 12 04:17:21 at ChildProcess.<anonymous> (/home/yellowtent/box/src/shell.js:137:19)
Sep 12 04:17:21 at ChildProcess.emit (node:events:519:28)
Sep 12 04:17:21 at ChildProcess.emit (node:domain:488:12)
Sep 12 04:17:21 at ChildProcess._handle.onexit (node:internal/child_process:294:12) {
Sep 12 04:17:21 reason: 'Shell Error',
Sep 12 04:17:21 details: {},
Sep 12 04:17:21 code: 1,
Sep 12 04:17:21 signal: null
Sep 12 04:17:21 }
Sep 12 04:17:21 box:backuptask fullBackup: app {DOMAIN} backup finished. Took 364.294 seconds
Sep 12 04:17:21 box:locks write: current locks: {"backup_task":null}
Sep 12 04:17:21 box:locks release: app_{UUID}
Sep 12 04:17:21 box:taskworker Task took 1041.04 seconds
Sep 12 04:17:21 box:tasks setCompleted - 7083: {"result":null,"error":{"stack":"BoxError: Backuptask crashed\n at runBackupUpload (/home/yellowtent/box/src/backuptask.js:170:15)\n at process.processTicksAndRejections (node:internal/process/task_queues:95:5)\n at async uploadAppSnapshot (/home/yellowtent/box/src/backuptask.js:369:5)\n at async backupAppWithTag (/home/yellowtent/box/src/backuptask.js:391:5)","name":"BoxError","reason":"Internal Error","details":{},"message":"Backuptask crashed"}}
Sep 12 04:17:21 box:tasks update 7083: {"percent":100,"result":null,"error":{"stack":"BoxError: Backuptask crashed\n at runBackupUpload (/home/yellowtent/box/src/backuptask.js:170:15)\n at process.processTicksAndRejections (node:internal/process/task_queues:95:5)\n at async uploadAppSnapshot (/home/yellowtent/box/src/backuptask.js:369:5)\n at async backupAppWithTag (/home/yellowtent/box/src/backuptask.js:391:5)","name":"BoxError","reason":"Internal Error","details":{},"message":"Backuptask crashed"}}
Sep 12 04:17:21 BoxError: Backuptask crashed
Sep 12 04:17:21 at runBackupUpload (/home/yellowtent/box/src/backuptask.js:170:15)
Sep 12 04:17:21 at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
Sep 12 04:17:21 at async uploadAppSnapshot (/home/yellowtent/box/src/backuptask.js:369:5)
Sep 12 04:17:21 at async backupAppWithTag (/home/yellowtent/box/src/backuptask.js:391:5)

[dsp76]

It also crashes when I start it manually.

[dsp76]

Switching back to SSHFS in Hetzner Storage Box seems to run the backup reliable.
So whats wrong with S3 in combination with Ionos then? It looks like the process dies in cloudron, but the error log for the task itself seems not to help. Ionos found no issues in the log.

[james]

Hello @dsp76
Good to read that you found a solution for you that works for now.
Regarding the issues with IONOS S3, we will have to look into it.

Just read the following topic Backup to Hetzner Object Storage failing regularly and now reading that you have no issues with Hetzner SSHFS.
It seems the experience between users are worlds apart.

Maybe some insights about:

• amount of apps
• what apps
• tgz or rsync
• backup size
• schedule
• full encryption
• file name encryption

from you @dsp76, @p44 and @ccfu might reveal some common issues?

[p44]

@james

In this case, it seems that something is interfering with backup scripts... what I would like to test – if possible – to stop all the apps, and retry with a "lighter" backup to see what will happens.

I've suspect that problem is from Hetzner side, but, of course, need more search to prove this.

Because of lacking of time, when I experienced issues (eg. unable to restore backup, different errors), I moved to other Isp and solved all the problems.

[james]

Hello @p44
If we can narrow it down like this, we have contacts to the Hetzner Team that is working on the Storage Boxes and could relay these details for further investigation.

[p44]

@james Yes, I totally agree with your point of view.

But as a paying customer and with a final user perspective I would not rely on that service, due to my past experience...

Of course, this is only my experience with Hetzner and this don’t means that all users are experiencing the same issues...

[halima632]

I had the same 400 error with IONOS S3 and it turned out to be a simple setup issue. In Cloudron’s backup settings, make sure you select the IONOS (Profitbricks) option instead of the generic S3 choice. Then double-check that the endpoint and region match your bucket exactly—for example s3.<your-region>.ionoscloud.com—and that path-style URLs are enabled. After I corrected those settings, the backups ran without any errors. If you still get the 400 after that, try a small manual backup or upload a tiny file with the same keys using the AWS CLI to confirm the credentials. If the problem persists, sharing the few log lines just before the crash will help others spot what’s wrong.

Hope this helps get your backups running smoothly.