Error 400 in backup process with Ionos S3 Object Storage

[dsp76]

Hi there,
its a Virtual Dedicated Server at Hetzner. Decently sized with 32GB RAM and 8 Cores.
When I drop the error message into AI, it also turns towards the provider. Suddenly HTTP400 when uploading ...
The concerned App ID is the largest - our own docker registry with about 40GB.

https://docs.ionos.com/cloud/storage-and-backup/ionos-object-storage/overview/limitations

Currently I load it in multi upload parts of max. 512MB size. The backup process may use up to 10GB memory, which should be enough. For testing I reduced the size zu 128MB for the parts. Lets see if thats fixing it.

I also opened a ticket with IONOS to find out, what the cause for error 400 was at the given timestamp. Hope they find some helpful information in the logs.

[dsp76]

OK, with reducing the size of the parts to 128MB it now ended successfully for the manual backup. Lets see if it also works with the regular backup at night from now on.

[dsp76]

Sorry, it still happens. Even reducing the chunk sizes to 128MB didn't solve it. For whatever reason, the backup task crashed on Cloudron due to "internal error". See the last lines...

What else could be the reason? Can I help to identify the root cause?

Sep 05 03:34:32 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256] directory
Sep 05 03:34:32 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:32 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:32 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:32 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:32 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:32 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:32 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:32 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:32 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:32 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:32 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:32 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:32 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:32 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:32 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:32 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:32 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:34 box:tasks update 7013: {"percent":77.66666666666667,"message":"Uploading backup 4803M@15MBps ([REDACTED])"}
Sep 05 03:34:38 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:38 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:38 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:38 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:38 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:38 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:38 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:38 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:38 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:38 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:38 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:38 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:38 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:38 box:backupformat/tgz tarPack: processing /home/yellowtent/appsdata/[UUID]/data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]
Sep 05 03:34:38 box:backupformat/tgz addToPack: added ./data/storage/docker/registry/v2/blobs/sha256/[XX]/[SHA256]/data file
Sep 05 03:34:39 box:storage/s3 Upload progress: {"loaded":4966055936,"part":38,"key":"cloudron_tz/snapshot/app_[UUID].tar.gz.enc"}
Sep 05 03:34:39 /home/yellowtent/box/node_modules/aws-sdk/lib/services/s3.js:712
Sep 05 03:34:39 resp.error = AWS.util.error(new Error(), {
Sep 05 03:34:39 ^
Sep 05 03:34:39
Sep 05 03:34:39 400: null
Sep 05 03:34:39 at Request.extractError (/home/yellowtent/box/node_modules/aws-sdk/lib/services/s3.js:712:35)
Sep 05 03:34:39 at Request.callListeners (/home/yellowtent/box/node_modules/aws-sdk/lib/sequential_executor.js:106:20)
Sep 05 03:34:39 at Request.emit (/home/yellowtent/box/node_modules/aws-sdk/lib/sequential_executor.js:78:10)
Sep 05 03:34:39 at Request.emit (/home/yellowtent/box/node_modules/aws-sdk/lib/request.js:686:14)
Sep 05 03:34:39 at Request.transition (/home/yellowtent/box/node_modules/aws-sdk/lib/request.js:22:10)
Sep 05 03:34:39 at AcceptorStateMachine.runTo (/home/yellowtent/box/node_modules/aws-sdk/lib/state_machine.js:14:12)
Sep 05 03:34:39 at /home/yellowtent/box/node_modules/aws-sdk/lib/state_machine.js:26:10
Sep 05 03:34:39 at Request.<anonymous> (/home/yellowtent/box/node_modules/aws-sdk/lib/request.js:38:9)
Sep 05 03:34:39 at Request.<anonymous> (/home/yellowtent/box/node_modules/aws-sdk/lib/request.js:688:12)
Sep 05 03:34:39 at Request.callListeners (/home/yellowtent/box/node_modules/aws-sdk/lib/sequential_executor.js:116:18) {
Sep 05 03:34:39 code: 400,
Sep 05 03:34:39 region: null,
Sep 05 03:34:39 time: 2025-09-05T01:34:41.375Z,
Sep 05 03:34:39 requestId: null,
Sep 05 03:34:39 extendedRequestId: undefined,
Sep 05 03:34:39 cfId: undefined,
Sep 05 03:34:39 statusCode: 400,
Sep 05 03:34:39 retryable: false,
Sep 05 03:34:39 retryDelay: 20000
Sep 05 03:34:39 }
Sep 05 03:34:39
Sep 05 03:34:39 Node.js v20.18.0
Sep 05 03:34:41 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 05 03:34:41 at ChildProcess.<anonymous> (/home/yellowtent/box/src/shell.js:137:19)
Sep 05 03:34:41 at ChildProcess.emit (node:events:519:28)
Sep 05 03:34:41 at ChildProcess.emit (node:domain:488:12)
Sep 05 03:34:41 at ChildProcess._handle.onexit (node:internal/child_process:294:12) {
Sep 05 03:34:41 reason: 'Shell Error',
Sep 05 03:34:41 details: {},
Sep 05 03:34:41 code: 1,
Sep 05 03:34:41 signal: null
Sep 05 03:34:41 }
Sep 05 03:34:41 box:backuptask runBackupUpload: backuptask crashed BoxError: backuptask exited with code 1 signal null
Sep 05 03:34:41 at ChildProcess.<anonymous> (/home/yellowtent/box/src/shell.js:137:19)
Sep 05 03:34:41 at ChildProcess.emit (node:events:519:28)
Sep 05 03:34:41 at ChildProcess.emit (node:domain:488:12)
Sep 05 03:34:41 at ChildProcess._handle.onexit (node:internal/child_process:294:12) {
Sep 05 03:34:41 reason: 'Shell Error',
Sep 05 03:34:41 details: {},
Sep 05 03:34:41 code: 1,
Sep 05 03:34:41 signal: null
Sep 05 03:34:41 }
Sep 05 03:34:41 box:backuptask fullBackup: app [REDACTED] backup finished. Took 331.629 seconds
Sep 05 03:34:41 box:locks write: current locks: {"backup_task":null}
Sep 05 03:34:41 box:locks release: app_[UUID]
Sep 05 03:34:41 box:taskworker Task took 2080.827 seconds
Sep 05 03:34:41 box:tasks setCompleted - 7013: {"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 05 03:34:41 box:tasks update 7013: {"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 05 03:34:41 BoxError: Backuptask crashed
Sep 05 03:34:41 at runBackupUpload (/home/yellowtent/box/src/backuptask.js:170:15)
Sep 05 03:34:41 at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
Sep 05 03:34:41 at async uploadAppSnapshot (/home/yellowtent/box/src/backuptask.js:369:5)
Sep 05 03:34:41 at async backupAppWithTag (/home/yellowtent/box/src/backuptask.js:391:5)

[p44]

@dsp76 did you try to debug other S3 storage provider?

[dsp76]

I don't have others...

[dsp76]

The logging doesn't show, that its related to the external system. More like an error in the internal backup task in cloudron?

[dsp76]

Its still happening. Everyday a different app in backup process. At different times.
@nebulon could we please remove the "solved" tag? I'm happy to help with debugging, if I know what to look for.
I'm now also looking into timing and potentially overlaps with other tasks.

[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.

[dsp76]

Hi @james ,
Hetzner Object Storage ≠ Hetzner Storage Box (thats what I was using as alternative backup target). I didn't try the Object Storage.

@halima632 that was a good hint! Just switched to the IONOS (Profitbricks) entry and it seems to run fine. I didn't know it existed and thought it was "S3 compatible" and fine

[dsp76]

Unfortunately even with the correct IONOS Settings from my Hetzner based Cloudron.

It started crashing again every night since a week now. Thats the anonymised log:

Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/autoptimize/js/autoptimize_snippet_********.js file
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/autoptimize/js/autoptimize_snippet_********.js file
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/autoptimize/js/autoptimize_snippet_********.js file
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/autoptimize/js/autoptimize_snippet_********.js file
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/autoptimize/js/autoptimize_snippet_********.js file
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/autoptimize/js/autoptimize_snippet_********.js file
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/autoptimize/js/autoptimize_snippet_********.js file
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/autoptimize/js/autoptimize_snippet_********.js file
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/autoptimize/js/autoptimize_snippet_********.js file
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/autoptimize/js/autoptimize_snippet_********.js file
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/autoptimize/js/autoptimize_snippet_********.js file
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/autoptimize/js/autoptimize_snippet_********.js file
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/autoptimize/js/autoptimize_snippet_********.js file
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/autoptimize/js/index.html file
Oct 15 04:12:36 box:backupformat/tgz tarPack: processing /home/***/appsdata/********/data/public/wp-content/cache/borlabs-cookie
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/borlabs-cookie/1 directory
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/borlabs-cookie/borlabs-cookie_1_de.css file
Oct 15 04:12:36 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/borlabs-cookie/borlabs-cookie_1_en.css file
Oct 15 04:12:37 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/borlabs-cookie/geo-ip-database-********.mmdb file
Oct 15 04:12:37 box:backupformat/tgz tarPack: processing /home/***/appsdata/********/data/public/wp-content/cache/borlabs-cookie/1
Oct 15 04:12:37 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/borlabs-cookie/1/borlabs-cookie-1-de.css file
Oct 15 04:12:37 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/borlabs-cookie/1/borlabs-cookie-1-en.css file
Oct 15 04:12:37 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/borlabs-cookie/1/borlabs-cookie-config-de.json.js file
Oct 15 04:12:37 box:backupformat/tgz addToPack: added ./data/public/wp-content/cache/borlabs-cookie/1/borlabs-cookie-config-en.json.js file
Oct 15 04:12:37 box:backupformat/tgz tarPack: processing /home/***/appsdata/********/data/public/wp-content/cache/matomo
Oct 15 04:12:37 box:backupformat/tgz tarPack: processing /home/***/appsdata/********/data/public/wp-content/infinitewp
Oct 15 04:12:37 box:backupformat/tgz addToPack: added ./data/public/wp-content/infinitewp/backups directory
Oct 15 04:12:37 box:backupformat/tgz addToPack: added ./data/public/wp-content/infinitewp/temp directory
Oct 15 04:12:37 box:backupformat/tgz tarPack: processing /home/***/appsdata/********/data/public/wp-content/infinitewp/backups
Oct 15 04:12:37 box:backupformat/tgz addToPack: added ./data/public/wp-content/infinitewp/backups/DE_clCPUUsage.****.txt file
Oct 15 04:12:37 box:backupformat/tgz addToPack: added ./data/public/wp-content/infinitewp/backups/DE_clMemoryPeak.****.txt file
Oct 15 04:12:37 box:backupformat/tgz addToPack: added ./data/public/wp-content/infinitewp/backups/DE_clMemoryUsage.****.txt file
Oct 15 04:12:37 box:backupformat/tgz addToPack: added ./data/public/wp-content/infinitewp/backups/DE_clTimeTaken.****.txt file
Oct 15 04:12:37 box:backupformat/tgz addToPack: added ./data/public/wp-content/infinitewp/backups/index.php file
Oct 15 04:12:42 box:tasks update ****: {"percent":21.3,"message":"Uploading backup 134M@9MBps (example.com)"}
Oct 15 04:12:42 box:storage/s3 Upload progress: {"loaded":134217728,"part":1,"key":"snapshot/app_********.tar.gz.enc"}
Oct 15 04:12:51 box:storage/s3 Upload progress: {"loaded":268435456,"part":2,"key":"snapshot/app_********.tar.gz.enc"}
Oct 15 04:12:52 box:tasks update ****: {"percent":21.3,"message":"Uploading backup 277M@14MBps (example.com)"}
Oct 15 04:13:02 box:tasks update ****: {"percent":21.3,"message":"Uploading backup 435M@16MBps (example.com)"}
Oct 15 04:13:03 box:backupformat/tgz addToPack: added ./data/public/wp-content/infinitewp/backups/example.com-de_backup_full_****-**-**_********.zip file
Oct 15 04:13:08 box:storage/s3 Upload progress: {"loaded":402653184,"part":4,"key":"snapshot/app_********.tar.gz.enc"}
Oct 15 04:13:12 box:tasks update ****: {"percent":21.3,"message":"Uploading backup 584M@15MBps (example.com)"}
Oct 15 04:13:12 AWS SDK Error: 400 Bad Request
Oct 15 04:13:12 code: 400, statusCode: 400, retryable: false
Oct 15 04:13:12 Node.js v20.18.0
Oct 15 04:13:19 box:shell backuptask: errored BoxError: backuptask exited with code 1 signal null
Oct 15 04:13:19 reason: 'Shell Error', code: 1
Oct 15 04:13:19 box:backuptask runBackupUpload: backuptask crashed BoxError: backuptask exited with code 1 signal null
Oct 15 04:13:19 box:backuptask fullBackup: app example.com backup finished. Took 67.438 seconds
Oct 15 04:13:19 box:tasks update ****: {"percent":100,"error":{"message":"Backuptask crashed"}}
Oct 15 04:13:19 BoxError: Backuptask crashed

Not sure what to do with it. Just started a manual backup, it also crashed again while uploading to IONOS.

Oct 15 11:00:05 400: null
Oct 15 11:00:05 at Request.extractError (/home/yellowtent/box/node_modules/aws-sdk/lib/services/s3.js:712:35)
Oct 15 11:00:05 at Request.callListeners (/home/yellowtent/box/node_modules/aws-sdk/lib/sequential_executor.js:106:20)
Oct 15 11:00:05 at Request.emit (/home/yellowtent/box/node_modules/aws-sdk/lib/sequential_executor.js:78:10)
Oct 15 11:00:05 at Request.emit (/home/yellowtent/box/node_modules/aws-sdk/lib/request.js:686:14)
Oct 15 11:00:05 at Request.transition (/home/yellowtent/box/node_modules/aws-sdk/lib/request.js:22:10)
Oct 15 11:00:05 at AcceptorStateMachine.runTo (/home/yellowtent/box/node_modules/aws-sdk/lib/state_machine.js:14:12)
Oct 15 11:00:05 at /home/yellowtent/box/node_modules/aws-sdk/lib/state_machine.js:26:10
Oct 15 11:00:05 at Request.<anonymous> (/home/yellowtent/box/node_modules/aws-sdk/lib/request.js:38:9)
Oct 15 11:00:05 at Request.<anonymous> (/home/yellowtent/box/node_modules/aws-sdk/lib/request.js:688:12)
Oct 15 11:00:05 at Request.callListeners (/home/yellowtent/box/node_modules/aws-sdk/lib/sequential_executor.js:116:18) {
Oct 15 11:00:05 code: 400,
Oct 15 11:00:05 region: null,
Oct 15 11:00:05 time: 2025-10-15T09:00:05.031Z,
Oct 15 11:00:05 requestId: null,
Oct 15 11:00:05 extendedRequestId: undefined,
Oct 15 11:00:05 cfId: undefined,
Oct 15 11:00:05 statusCode: 400,
Oct 15 11:00:05 retryable: false,
Oct 15 11:00:05 retryDelay: 20000
Oct 15 11:00:05 }

and

Oct 15 11:00:05 box:tasks setCompleted - 7460: {"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"}}
Oct 15 11:00:05 box:tasks update 7460: {"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"}}
Oct 15 11:00:05 BoxError: Backuptask crashed

The snapshot folder within the bucket (created by cloudron?) contains a couple of up to date uploads.

• Who should I with - is it IONOS? Is it cloudron? Is it Hetzner?
• Whats causing the "internal error" while uploading?
• Why is it "retryable: false"?

[dsp76]

Can I mark this as unsolved again?