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[GH-ISSUE #1815] The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256. #929

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opened 2026-03-04 01:50:00 +03:00 by kerem · 5 comments
kerem commented 2026-03-04 01:50:00 +03:00
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Originally created by @jekatarina on GitHub (Dec 9, 2021).
Original GitHub issue: https://github.com/s3fs-fuse/s3fs-fuse/issues/1815

Additional Information

The following information is very important in order to help us to help you. Omission of the following details may delay your support request or receive no attention at all.
Keep in mind that the commands we provide to retrieve information are oriented to GNU/Linux Distributions, so you could need to use others if you use s3fs on macOS or BSD

Version of s3fs being used (s3fs --version)

Amazon Simple Storage Service File System V1.86 (commit:unknown) with GnuTLS(gcrypt)
Copyright (C) 2010 Randy Rizun rrizun@gmail.com
License GPL2: GNU GPL version 2 https://gnu.org/licenses/gpl.html
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Version of fuse being used (pkg-config --modversion fuse, rpm -qi fuse, dpkg -s fuse)

Package: fuse
Status: install ok installed
Priority: optional
Section: utils
Installed-Size: 113
Maintainer: Ubuntu Developers ubuntu-devel-discuss@lists.ubuntu.com
Architecture: amd64
Version: 2.9.9-3
Depends: libc6 (>= 2.28), libfuse2 (= 2.9.9-3), adduser, mount (>= 2.19.1), sed (>= 4)
Conffiles:
/etc/fuse.conf 298587592c8444196833f317def414f2
Description: Filesystem in Userspace
Filesystem in Userspace (FUSE) is a simple interface for userspace programs to
export a virtual filesystem to the Linux kernel. It also aims to provide a
secure method for non privileged users to create and mount their own filesystem
implementations.
Original-Maintainer: Laszlo Boszormenyi (GCS) gcs@debian.org
Homepage: https://github.com/libfuse/libfuse/wiki

Kernel information (uname -r)

.4.72-microsoft-standard-WSL2

GNU/Linux Distribution, if applicable (cat /etc/os-release)

NAME="Ubuntu"
VERSION="20.04.3 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.3 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal

s3fs command line used, if applicable

s3fs backup-database-bucket-test /var/lib/mysql/ -o nonempty -o passwd_file=/etc/passwd-s3fs -o endpoint=eu-central-1 -f -d

/etc/fstab entry, if applicable

# UNCONFIGURED FSTAB FOR BASE SYSTEM

s3fs syslog messages (grep s3fs /var/log/syslog, journalctl | grep s3fs, or s3fs outputs)

if you execute s3fs with dbglevel, curldbg option, you can get detail debug messages

[CRT] s3fs.cpp:set_s3fs_log_level(297): change debug level from [CRT] to [INF]
[INF]     s3fs.cpp:set_mountpoint_attribute(4400): PROC(uid=0, gid=0) - MountPoint(uid=0, gid=0, mode=40700)
[INF] s3fs.cpp:s3fs_init(3493): init v1.86(commit:unknown) with GnuTLS(gcrypt)
[INF] s3fs.cpp:s3fs_check_service(3828): check services.
[INF]       curl.cpp:CheckBucket(3413): check a bucket.
[INF]       curl.cpp:prepare_url(4703): URL is https://s3.amazonaws.com/backup-database-bucket-test/
[INF]       curl.cpp:prepare_url(4736): URL changed is https://backup-database-bucket-test.s3.amazonaws.com/
[INF]       curl.cpp:insertV4Headers(2753): computing signature [GET] [/] [] []
[INF]       curl.cpp:url_to_host(99): url is https://s3.amazonaws.com
[ERR] curl.cpp:RequestPerform(2436): HTTP response code 403, returning EPERM. Body Text: <?xml version="1.0" encoding="UTF-8"?>
<Error><Code>AccessDenied</Code><Message>Access Denied</Message><RequestId>1HJTCAHD1ZNAWJWY</RequestId><HostId>TjeqWeV/WgkIOOC68XM7cxoNqokf3/O/1qS8V/89+1qsl4kjSEa2KtTEP9CutVLmBxarsTYkCVM=</HostId></Error>
[ERR] curl.cpp:CheckBucket(3439): Check bucket failed, S3 response: <?xml version="1.0" encoding="UTF-8"?>
<Error><Code>AccessDenied</Code><Message>Access Denied</Message><RequestId>1HJTCAHD1ZNAWJWY</RequestId><HostId>TjeqWeV/WgkIOOC68XM7cxoNqokf3/O/1qS8V/89+1qsl4kjSEa2KtTEP9CutVLmBxarsTYkCVM=</HostId></Error>
[CRT] s3fs.cpp:s3fs_check_service(3883): Failed to connect by sigv4, so retry to connect by signature version 2.
[INF] curl.cpp:ReturnHandler(318): Pool full: destroy the oldest handler
[INF]       curl.cpp:CheckBucket(3413): check a bucket.
[INF]       curl.cpp:prepare_url(4703): URL is https://s3.amazonaws.com/backup-database-bucket-test/
[INF]       curl.cpp:prepare_url(4736): URL changed is https://backup-database-bucket-test.s3.amazonaws.com/
[ERR] curl.cpp:RequestPerform(2431): HTTP response code 400, returning EIO. Body Text: <?xml version="1.0" encoding="UTF-8"?>
<Error><Code>InvalidRequest</Code><Message>The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.</Message><RequestId>1HJTYTZNGWVCRCEX</RequestId><HostId>V93Ft4vonc7khZxKAlsgJr+ZST5QovNdNuhVii2jTNzlBL4xmRoXX5uYHIw8vplUKyy6ulJslpg=</HostId></Error>
[ERR] curl.cpp:CheckBucket(3439): Check bucket failed, S3 response: <?xml version="1.0" encoding="UTF-8"?>
<Error><Code>InvalidRequest</Code><Message>The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.</Message><RequestId>1HJTYTZNGWVCRCEX</RequestId><HostId>V93Ft4vonc7khZxKAlsgJr+ZST5QovNdNuhVii2jTNzlBL4xmRoXX5uYHIw8vplUKyy6ulJslpg=</HostId></Error>
[CRT] s3fs.cpp:s3fs_check_service(3895): Bad Request(host=https://s3.amazonaws.com) - result of checking service.
[ERR] s3fs.cpp:s3fs_exit_fuseloop(3483): Exiting FUSE event loop due to errors

[INF] s3fs.cpp:s3fs_destroy(3546): destroy

Details about issue

Unable to mount file directory to S3

Originally created by @jekatarina on GitHub (Dec 9, 2021). Original GitHub issue: https://github.com/s3fs-fuse/s3fs-fuse/issues/1815 ### Additional Information _The following information is very important in order to help us to help you. Omission of the following details may delay your support request or receive no attention at all._ _Keep in mind that the commands we provide to retrieve information are oriented to GNU/Linux Distributions, so you could need to use others if you use s3fs on macOS or BSD_ #### Version of s3fs being used (s3fs --version) _Amazon Simple Storage Service File System V1.86 (commit:unknown) with GnuTLS(gcrypt) Copyright (C) 2010 Randy Rizun <rrizun@gmail.com> License GPL2: GNU GPL version 2 <https://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law._ #### Version of fuse being used (pkg-config --modversion fuse, rpm -qi fuse, dpkg -s fuse) _Package: fuse Status: install ok installed Priority: optional Section: utils Installed-Size: 113 Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com> Architecture: amd64 Version: 2.9.9-3 Depends: libc6 (>= 2.28), libfuse2 (= 2.9.9-3), adduser, mount (>= 2.19.1), sed (>= 4) Conffiles: /etc/fuse.conf 298587592c8444196833f317def414f2 Description: Filesystem in Userspace Filesystem in Userspace (FUSE) is a simple interface for userspace programs to export a virtual filesystem to the Linux kernel. It also aims to provide a secure method for non privileged users to create and mount their own filesystem implementations. Original-Maintainer: Laszlo Boszormenyi (GCS) <gcs@debian.org> Homepage: https://github.com/libfuse/libfuse/wiki_ #### Kernel information (uname -r) _.4.72-microsoft-standard-WSL2_ #### GNU/Linux Distribution, if applicable (cat /etc/os-release) _NAME="Ubuntu" VERSION="20.04.3 LTS (Focal Fossa)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 20.04.3 LTS" VERSION_ID="20.04" HOME_URL="https://www.ubuntu.com/" SUPPORT_URL="https://help.ubuntu.com/" BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/" PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy" VERSION_CODENAME=focal UBUNTU_CODENAME=focal_ #### s3fs command line used, if applicable ``` s3fs backup-database-bucket-test /var/lib/mysql/ -o nonempty -o passwd_file=/etc/passwd-s3fs -o endpoint=eu-central-1 -f -d ``` #### /etc/fstab entry, if applicable ``` # UNCONFIGURED FSTAB FOR BASE SYSTEM ``` #### s3fs syslog messages (grep s3fs /var/log/syslog, journalctl | grep s3fs, or s3fs outputs) _if you execute s3fs with dbglevel, curldbg option, you can get detail debug messages_ ``` [CRT] s3fs.cpp:set_s3fs_log_level(297): change debug level from [CRT] to [INF] [INF] s3fs.cpp:set_mountpoint_attribute(4400): PROC(uid=0, gid=0) - MountPoint(uid=0, gid=0, mode=40700) [INF] s3fs.cpp:s3fs_init(3493): init v1.86(commit:unknown) with GnuTLS(gcrypt) [INF] s3fs.cpp:s3fs_check_service(3828): check services. [INF] curl.cpp:CheckBucket(3413): check a bucket. [INF] curl.cpp:prepare_url(4703): URL is https://s3.amazonaws.com/backup-database-bucket-test/ [INF] curl.cpp:prepare_url(4736): URL changed is https://backup-database-bucket-test.s3.amazonaws.com/ [INF] curl.cpp:insertV4Headers(2753): computing signature [GET] [/] [] [] [INF] curl.cpp:url_to_host(99): url is https://s3.amazonaws.com [ERR] curl.cpp:RequestPerform(2436): HTTP response code 403, returning EPERM. Body Text: <?xml version="1.0" encoding="UTF-8"?> <Error><Code>AccessDenied</Code><Message>Access Denied</Message><RequestId>1HJTCAHD1ZNAWJWY</RequestId><HostId>TjeqWeV/WgkIOOC68XM7cxoNqokf3/O/1qS8V/89+1qsl4kjSEa2KtTEP9CutVLmBxarsTYkCVM=</HostId></Error> [ERR] curl.cpp:CheckBucket(3439): Check bucket failed, S3 response: <?xml version="1.0" encoding="UTF-8"?> <Error><Code>AccessDenied</Code><Message>Access Denied</Message><RequestId>1HJTCAHD1ZNAWJWY</RequestId><HostId>TjeqWeV/WgkIOOC68XM7cxoNqokf3/O/1qS8V/89+1qsl4kjSEa2KtTEP9CutVLmBxarsTYkCVM=</HostId></Error> [CRT] s3fs.cpp:s3fs_check_service(3883): Failed to connect by sigv4, so retry to connect by signature version 2. [INF] curl.cpp:ReturnHandler(318): Pool full: destroy the oldest handler [INF] curl.cpp:CheckBucket(3413): check a bucket. [INF] curl.cpp:prepare_url(4703): URL is https://s3.amazonaws.com/backup-database-bucket-test/ [INF] curl.cpp:prepare_url(4736): URL changed is https://backup-database-bucket-test.s3.amazonaws.com/ [ERR] curl.cpp:RequestPerform(2431): HTTP response code 400, returning EIO. Body Text: <?xml version="1.0" encoding="UTF-8"?> <Error><Code>InvalidRequest</Code><Message>The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.</Message><RequestId>1HJTYTZNGWVCRCEX</RequestId><HostId>V93Ft4vonc7khZxKAlsgJr+ZST5QovNdNuhVii2jTNzlBL4xmRoXX5uYHIw8vplUKyy6ulJslpg=</HostId></Error> [ERR] curl.cpp:CheckBucket(3439): Check bucket failed, S3 response: <?xml version="1.0" encoding="UTF-8"?> <Error><Code>InvalidRequest</Code><Message>The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.</Message><RequestId>1HJTYTZNGWVCRCEX</RequestId><HostId>V93Ft4vonc7khZxKAlsgJr+ZST5QovNdNuhVii2jTNzlBL4xmRoXX5uYHIw8vplUKyy6ulJslpg=</HostId></Error> [CRT] s3fs.cpp:s3fs_check_service(3895): Bad Request(host=https://s3.amazonaws.com) - result of checking service. [ERR] s3fs.cpp:s3fs_exit_fuseloop(3483): Exiting FUSE event loop due to errors [INF] s3fs.cpp:s3fs_destroy(3546): destroy ``` ### Details about issue Unable to mount file directory to S3
kerem 2026-03-04 01:50:00 +03:00
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kerem commented 2026-03-04 01:50:01 +03:00
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@gaul commented on GitHub (Dec 9, 2021):

It looks like your credentials are incorrect. The confusing error message is due to sigv2 fallback. You can disable this with -o sigv4.

<!-- gh-comment-id:989853888 --> @gaul commented on GitHub (Dec 9, 2021): It looks like your credentials are incorrect. The confusing error message is due to sigv2 fallback. You can disable this with `-o sigv4`.
kerem commented 2026-03-04 01:50:01 +03:00
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@jekatarina commented on GitHub (Dec 9, 2021):

Thanks for your answer. I've controlled my credentials again and the credentials are written in the form
AccessKeyId:SecretAccessKey
in the file and the values are correct.
When i am adding the -o sigv4 option, i get following error:

[CRT] s3fs.cpp:set_s3fs_log_level(297): change debug level from [CRT] to [INF]
[INF] s3fs.cpp:set_mountpoint_attribute(4400): PROC(uid=0, gid=0) - MountPoint(uid=999, gid=0, mode=40777)
fuse: unknown option `sigv4'

<!-- gh-comment-id:989862741 --> @jekatarina commented on GitHub (Dec 9, 2021): Thanks for your answer. I've controlled my credentials again and the credentials are written in the form AccessKeyId:SecretAccessKey in the file and the values are correct. When i am adding the -o sigv4 option, i get following error: [CRT] s3fs.cpp:set_s3fs_log_level(297): change debug level from [CRT] to [INF] [INF] s3fs.cpp:set_mountpoint_attribute(4400): PROC(uid=0, gid=0) - MountPoint(uid=999, gid=0, mode=40777) fuse: unknown option `sigv4'
kerem commented 2026-03-04 01:50:01 +03:00
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@iamhritik commented on GitHub (Apr 27, 2022):

I think you are using secret key first and then access key in passwd-s3fs file. Please use it correctly

<!-- gh-comment-id:1110707110 --> @iamhritik commented on GitHub (Apr 27, 2022): I think you are using secret key first and then access key in passwd-s3fs file. Please use it correctly
kerem commented 2026-03-04 01:50:01 +03:00
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@ggtakec commented on GitHub (May 22, 2022):

@jekatarina
You are using v1.86, but this version does not have the sigv4 option built in.(The sigv4 option is supported since v1.88.)
Please try again with the latest version.
Thanks in advance for your assistance.

<!-- gh-comment-id:1133839838 --> @ggtakec commented on GitHub (May 22, 2022): @jekatarina You are using v1.86, but this version does not have the `sigv4` option built in.(The `sigv4` option is supported since v1.88.) Please try again with the latest version. Thanks in advance for your assistance.
kerem commented 2026-03-04 01:50:01 +03:00
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@gaul commented on GitHub (Sep 8, 2023):

Please test with 1.93 and reopen if your symptoms persist.

<!-- gh-comment-id:1710966143 --> @gaul commented on GitHub (Sep 8, 2023): Please test with 1.93 and reopen if your symptoms persist.
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