[aelnahas]

Motivation/summary

Add new supported os to the supported list for our os smoke tests.

Checklist

• Does not have user-facing changes

For functional changes, consider:

• Is it observable through the addition of either logging or metrics?
• Is its use being published in telemetry to enable product improvement?
• Have system tests been added to avoid regression?

How to test these changes

Checked our Public AMI list and verified that these images exist

Related issues

Fixes: #21245

[github-actions]

🤖 GitHub comments

Just comment with:

• run docs-build : Re-trigger the docs validation. (use unformatted text in the comment!)

[mergify]

This pull request does not have a backport label. Could you fix it @aelnahas? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-8.19 is the label to automatically backport to the 8.19 branch.
• backport-9./d is the label to automatically backport to the 9./d branch. /d is the digit.
• backport-active-all is the label that automatically backports to all active branches.
• backport-active-9 is the label that automatically backports to all active minor branches for the 9 major.

[Copilot]

🟢 Approval recommended

No active review issues were identified for the expanded OS smoke-test matrix and supporting infrastructure configuration.

No open issues 🎉

What changed in this PR

Expands APM Server’s OS smoke-test coverage to address missing newer versions identified in #21245.

Changes:

• Adds Ubuntu 26.04, RHEL 10, Rocky Linux 10, and AlmaLinux 10 to the smoke-test matrix.
• Adds corresponding Terraform image-owner, instance-type, architecture, provisioning, and SSH-user mappings.
• Updates workflow documentation to reflect the expanded matrix and existing Rocky Linux 8 coverage.

File	Description
testing/​smoke/​os_matrix.sh	Adds four newer OS versions to smoke tests.
testing/​infra/​terraform/​modules/​standalone_apm_server/​main.tf	Configures instances and package installation for the added versions.
.github/​workflows/​docs/​smoke-tests-os.yml.md	Aligns the documented OS list with the matrix.

_{Review effort: Balanced}

[infra-vault-gh-plugin-prod]

💚 Build Succeeded

• Buildkite Build
• Commit: 7e1b674

[aelnahas]

closing this, I will push this to a branch in elastic/apm-server so that I can run the smoke os workflow there for extra verification