Issue .NET Toolkit suddenly stopped working

[jorgerucoba]

Server operating system version

CentOS Linux 7.9.2009 (Core)

Plesk version and microupdate number

Plesk Obsidian v18.0.57_build1800231218.09 os_CentOS 7

I have the .NET toolkit version 2.1.12-2046 with runtime version 6.0 (6.0.25) installed. I have a list of running applications, all of them suddenly stopped working, I tried restarting them, but I immediately get the error "The specified restart instance not found", without any further details neither logged messages. It is weird because when I try to run the very same application via the terminal command "dotnet ....dll", it works. I also tried to deploy the test application supplied by plesk in a different domain, but the application is never deployed and the same error is thrown when I click on restart.

 

[Peter Debik]

In our known issues I could only find this for CloudLinux and the CageFS filesystem under certain circumstances, but beyond having seen the bug no workaround is known. But you are on CentOS. For that reason I recommend to submit a support ticket so that an engineer can check this directly on your server.

To sign-in to support please go to https://support.plesk.com

If you experience login issues, please see this KB article:
https://support.plesk.com/hc/en-us/...rt-plesk-com-and-password-reset-does-not-work

If you bought your license from a reseller, your reseller should provide support for you. If the reseller does not provide support, here is an alternative:
https://support.plesk.com/hc/en-us/articles/12388090147095-How-to-get-support-directly-from-Plesk-

 

[a.abdelrazek]

i have a similar problem on almalinux 9
.NET toolkit version 2.1.12-2046
where Phusion Passenger can't deploy my app with error

21942/Tk age/Cor/App/Implementation.cpp:221: Could not spawn process for application /var/www/vhosts/xxxxxx/xxxxxx: The application process exited prematurely.
Error ID: 434d49b2
Error details saved to: /tmp/passenger-error-XQ4xzP.html

but i still can run it using the dotnet /var/www/vhosts/xxxxxx/xxxxxx command without a problem
even tried the default template project and the same thing
all of them are dot net 8 web apps

 

[DenisG]

Make sure SELinux is turned off or is tuned properly.

 

[Christopher Cookson]

Make sure SELinux is turned off or is tuned properly.

Is there any example or documentation on how SELinux should be tuned to allow .Net Toolkit to function?

Disabling SELinux seems like it comes with some security considerations, so details on how to tune it properly for .Net Toolkit sites would be helpful.