Update Linux versions in Libraries pipeline

[richlander]

No description provided.

[Copilot]

Pull Request Overview

This PR updates the Linux container image references in the Libraries pipeline configuration to use the new AzureLinux.3 versions instead of the previous Ubuntu.2204 images.

• Updated image references for the Alpine musl x64 platforms
• Updated image references for the Linux x64 platforms

[richlander]

/azp run runtime-libraries-coreclr outerloop-linux

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[richlander]

/azp run runtime-extra-platforms

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[richlander]

I need some help with this failure on Alpine 3.21 using an Azure Linux VM. It is the only failure I see w/Azure Linux at this point.

    System.Net.Sockets.Tests.NoParallelSelectTests.Select_LargeNumber_Succcess [SKIP]
      Unable to open large count number of socket
Out of memory.
./RunTests.sh: line 178:    35 Aborted                 (core dumped) "$RUNTIME_PATH/dotnet" exec --runtimeconfig System.Net.Sockets.Tests.runtimeconfig.json --depsfile System.Net.Sockets.Tests.deps.json xunit.console.dll System.Net.Sockets.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing $RSP_FILE
/root/helix/work/workitem/e

The same tests ran yesterday on an Ubuntu VM w/o issue: #115590.

@wfurt @liveans

[liveans]

I need some help with this failure on Alpine 3.21 using an Azure Linux VM. It is the only failure I see w/Azure Linux at this point.

    System.Net.Sockets.Tests.NoParallelSelectTests.Select_LargeNumber_Succcess [SKIP]
      Unable to open large count number of socket
Out of memory.
./RunTests.sh: line 178:    35 Aborted                 (core dumped) "$RUNTIME_PATH/dotnet" exec --runtimeconfig System.Net.Sockets.Tests.runtimeconfig.json --depsfile System.Net.Sockets.Tests.deps.json xunit.console.dll System.Net.Sockets.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing $RSP_FILE
/root/helix/work/workitem/e

The same tests ran yesterday on an Ubuntu VM w/o issue: #115590.

@wfurt @liveans

I'll take a look

[wfurt]

It is probably OS defaults. AZLinux tends to fiddle with them and make them more conservative. It would be interesting to see ulimit -n output now and before. And it can be also assigned memory since the test dated with OOM.

[richlander]

It is actually the opposite, that Azure Linux wasn't configured.

• Azure Linux 3 VMs need to be updated dnceng#5602 (comment)
• https://dev.azure.com/dnceng/internal/_wiki/wikis/DNCEng%20Services%20Wiki/915/Investigating-Helix-VM-images

[richlander]

I setup a new VM using our Azure Linux image.

rlander@rlander001 [ ~ ]$ cat /etc/os-release | head -n 1
NAME="Microsoft Azure Linux"
rlander@rlander001 [ ~ ]$ uname -a
Linux rlander001 6.6.85.1-2.azl3 #1 SMP PREEMPT_DYNAMIC Tue Apr 29 22:06:29 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
rlander@rlander001 [ ~ ]$ ulimit -f
unlimited