Update RedHat 7 -> 8 -- release/6.0-staging

[richlander]

Red Hat no longer supports .NET 6 on RHEL 7.

Context: https://access.redhat.com/support/policy/updates/net-core

Also resolving #103380 (comment)

@omajid @akoeplinger

[omajid]

I don't know the format of these files too well, but the general change from 7 to 8 makes sense to me.

[dotnet-policy-service]

Tagging subscribers to this area: @dotnet/runtime-infrastructure
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[carlossanlop]

No equivalent PR for release/8.0-staging?

[carlossanlop]

@richlander this is failing:

.packages/microsoft.dotnet.helix.sdk/6.0.0-beta.24360.7/tools/Microsoft.DotNet.Helix.Sdk.MonoQueue.targets(59,5): error : (NETCORE_ENGINEERING_TELEMETRY=Build) Helix API does not contain an entry for RedHat.8.Amd64.Open

Here: https://dev.azure.com/dnceng-public/public/_build/results?buildId=745875&view=logs&j=1f44e919-17d8-5098-631c-31ef11f9e57b&t=d617d884-da52-5b82-bd49-f7613b408af4&l=92

and here: https://dev.azure.com/dnceng-public/public/_build/results?buildId=745875&view=logs&j=bc8f69e2-91b3-518c-84f8-466a04c1af40&t=0864dbdb-cb3f-5f82-b0b6-057b78db53e2&l=92

[carlossanlop]

Approving for servicing as tell-mode. You can merge anytime if the CI looks good.

[richlander]

Silly me. I didn't realize that we didn't have a RHEL 8 queue. Tracking issue: dotnet/dnceng#3867.

I also didn't realize that they list was available: https://helix.dot.net/

[carlossanlop]

@richlander any updates on this? Is it ready to merge?

[richlander]

Thanks for checking in. The tracking issue is still open.

[carlossanlop]

BTW friendly reminder: Code Complete for the October Release is September 9. If we want this fix to be included in that release, please merge this PR before that date. Otherwise, it will have to wait until November.

[carlossanlop]

Removing servicing-approved to prevent accidental merge. @richlander feel free to add the label again when you're ready to merge (it will unblock the check-service-labels required CI leg).

[carlossanlop]

@richlander we are going to need this PR merged soon as all existing PRs in the release/6.0-staging are now failing with the following error:

❌SENDHELIXJOB(0,0): error : Helix queue redhat.7.amd64.open is set for estimated removal date of 2024-10-01. 
In most cases the queue will be removed permanently due to end-of-life; please contact dnceng for any questions 
or concerns, and we can help you decide how to proceed and discuss other options.

Examples:

https://github.com/dotnet/runtime/pull/108300/checks?check_run_id=30735541280 , https://github.com/dotnet/runtime/pull/107828/checks?check_run_id=30735326967 , https://github.com/dotnet/runtime/pull/107826/checks?check_run_id=30735395206 , https://github.com/dotnet/runtime/pull/107764/checks?check_run_id=30735049259

[richlander]

I'll raise this with the right folks.

[richlander]

My thinking is:

• Replace RHEL7 with CentOS 7 to preserve validating min glibc.
• Add CentOS Stream 9 for outer loop testing.

[carlossanlop]

/ba-g The wasm "connection refused" and "Chrome was unable to start" failures that did not get linked to an issue are unrelated to this PR. One of them is #104349