Question osdetect failed: Error: Cannot determine version scanning ""

[cool_sh]

Server operating system version

CentOS 7

Plesk version and microupdate number

18.0.65 #2

Hi all,

which files or database tables does plesk use to determine th ecurrent OS ?

I have the problem that i can not install updates or plugins due to the named error:
Fehler: osdetect failed: Error: Cannot determine version scanning ""

But: the "standard" files exist and show correct information:
- cat /etc/centos-release
CentOS Linux release 7.9.2009 (Core)

- uname -r
3.10.0-1160.119.1.el7.x86_64

And inside Plesk I see the correct version on different sides like the page after login or in server information:
Version: Plesk Obsidian v18.0.65_build1800241122.08 os_CentOS 7
Betriebssystem: CentOS Linux 7.9.2009 (Core)

 

[mizar]

Hello,

/etc/redhat-release is used to detect CentOS 7

Thanks,

 

[cool_sh]

Hello,

/etc/redhat-release is used to detect CentOS 7

Thanks,

Hello mizar,

it seems not as the file is existent with correct content:
CentOS Linux release 7.9.2009 (Core)

 

[mizar]

Hello!

osdetect tries to check following files /etc/debian_version, /etc/CloudLinux-release, /etc/vzlinux-release, /etc/almalinux-release, /etc/rocky-release. If one of these files exists and has empty first line, osdetect can fail with such error. Could you please check your server?

 

[cool_sh]

Hello mizar,

none of the named files exists on my system. Plesk seems to read the information from another location.

 

[mizar]

Hello!

Very strange. Is any chance that /etc/redhat-release is modified? Plesk reads exactly first line from it. What rpm -V centos-release shows?

 

[cool_sh]

ls -al /etc/redhat-release
lrwxrwxrwx 1 root root 14 Jun 6 2024 /etc/redhat-release -> centos-release

rpm -V centos-release
S.5...... c /etc/issue
S.5...... c /etc/issue.net
S.5....T. c /etc/yum.repos.d/CentOS-Base.repo
S.5....T. c /etc/yum.repos.d/CentOS-CR.repo
.......T. c /etc/yum.repos.d/CentOS-Debuginfo.repo
.......T. c /etc/yum.repos.d/CentOS-Media.repo
.......T. c /etc/yum.repos.d/CentOS-Sources.repo
.......T. c /etc/yum.repos.d/CentOS-Vault.repo
S.5....T. c /etc/yum.repos.d/CentOS-fasttrack.repo
S.5....T. c /etc/yum.repos.d/CentOS-x86_64-kernel.repo

 

[mizar]

Hello!

Looks good. Unfortunately, I'm out of ideas what else can be wrong. Could you please send me output of strace -f -v -s400 /usr/local/psa/admin/sbin/osdetect 2>&1 in PM? Or, if you have a contract with support, create a support ticket?