Add support for Fedora 34

[rbhanda]

This issue is created to track progress for the work to enable Fedora 34 support for .NET Core 3.1, .NET Core 2.1 and .NET 5.0.

Product and Test updates

• [All teams] Do a compatibility check for the product with the new OS
• [CoreCLR/CoreFX] Runtime / RID Support update
• [Infra] Ensure that the correct Docker images used by teams are built in the dotnet-buildtools-prereqs (if applicable)
• [Infra] Replace docker tags used in builds across repos and branches
• [CLI team] Update CI legs to latest updated Dockerfile
• [All teams] Update test infrastructure to support the new version
• [Acquisition] Add support within nightly repos
• [Acquisition] Deploy to master (GA) during next patch release cycle

Release team:

• Notify .NET Core teams regarding new OS release
• Follow up with infra and add feed for new OS release to packages.microsoft.com
• Update release manifest files
• Create new Docker files to test the new OS
• Update the supported OS content on GitHub and marketing sites.

Document updates:

• Add OS prerequisites to the dependencies document
• Update distro install page

[wfurt]

master and 5.0 dotnet/runtime@19a0db4
3.1 dotnet/corefx#42975
2.1 dotnet/corefx#43024

[jorge-castello]

Hi! I recently learned about Fedora 34 and am interested in trying it out. Would it be alright to use .NET with it?

I noticed in the documentation the install instructions for Fedora 33: https://docs.microsoft.com/en-us/dotnet/core/install/linux-fedora

Should I wait until I see an update in the docs for Fedora 34 or would it be alright to give it a try? Thank you!

[omajid]

Hi @jorgio-castello ! I am running Fedora 34 and doing all my .NET development on it. As far as I know, the .NET packages in Fedora 34 should work as well as they do on Fedora 33 (or any other Fedora version). It's more the case that the documentation is a bit out of date. You should be able to follow the Fedora 33 documentation for installing on Fedora 34 as well:

sudo dnf install dotnet-sdk-5.0

I am probably a bit biased since I am one of the maintainers of the .NET packages in Fedora. Let us know if you run into any issues and we can help trying to work around them.

[adegeo]

@jorgio-castello @omajid I'll get the docs updated!

[rbhanda]

Thanks @adegeo . We will also have to update the docs for Ubuntu 21.04

[LightBender]

Hi @omajid, I have been trying to install .NET Core on FC34 and I get this from dotnet:

[root@BUILD-LINUX2 ~]# dotnet --info
It was not possible to find any compatible framework version
The framework 'Microsoft.NETCore.App', version '5.0.7' was not found.
  - No frameworks were found.

You can resolve the problem by installing the specified framework and/or SDK.

The specified framework can be found at:
  - https://aka.ms/dotnet-core-applaunch?framework=Microsoft.NETCore.App&framework_version=5.0.7&arch=x64&rid=fedora.34-x64

Host (useful for support):
  Version: 5.0.7
  Commit:  556582d964

.NET SDKs installed:
  3.1.410 [/usr/share/dotnet/sdk]
  5.0.301 [/usr/share/dotnet/sdk]

.NET runtimes installed:
  No runtimes were found.

To install additional .NET runtimes or SDKs:
  https://aka.ms/dotnet-download

But when I try to install a runtime:

[root@BUILD-LINUX2 ~]# dnf install aspnetcore-runtime-5.0
Last metadata expiration check: 0:46:02 ago on Sun 20 Jun 2021 02:07:03 PM PDT.
Package aspnetcore-runtime-5.0-5.0.4-1.fc34.x86_64 is already installed.
Dependencies resolved.
Nothing to do.
Complete!

This appears to be because openssl-compat10 is not available on FC34. How did you get yours working?

[omajid]

Hey @LightBender. It looks like you have a mix of .NET-related packages. Some from Microsoft (packages.microsoft.com) and some from Fedora.

Could you share the output of dnf repolist?

Have you seen https://docs.microsoft.com/en-us/dotnet/core/install/linux-package-mixup#solutions ? That has a couple of solutions on what you can do to solve this issue. In my case, I removed the Microsoft packages repository and then installed .NET from Fedora. A dnf install dotnet-sdk-5.0 in a fresh Fedora 34 install should work out of the box.