feat: add SIG image config for initial 26.04 minimal distros#8792
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Pull request overview
This PR updates AgentBaker’s Linux SIG distro/catalog configuration to introduce initial Ubuntu 26.04 minimal (Gen2) distros and removes Ubuntu 22.04 minimal distro/config entries that are described as unused/deprecated. These changes are centered in the pkg/agent/datamodel layer, which drives how the AgentBaker service reasons about supported distros and their SIG image definitions.
Changes:
- Added new distro constants for Ubuntu 26.04 minimal containerd (Gen2, amd64 + arm64) and included them in the “available on VHD” list.
- Added SIG image config templates and distro availability lists for Ubuntu 26.04 minimal and removed the corresponding Ubuntu 22.04 minimal templates/entries.
- Updated SIG config unit tests to reflect the new maintained image config map expectations.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 6 comments.
| File | Description |
|---|---|
| pkg/agent/datamodel/types.go | Adds 26.04 minimal distro constants and includes them in the VHD-available distro list, removing 22.04 minimal entries. |
| pkg/agent/datamodel/sig_config.go | Introduces 26.04 minimal distro availability and SIG templates; removes 22.04 minimal SIG templates and references. |
| pkg/agent/datamodel/sig_config_test.go | Updates maintained SIG config map expectations and cloud spec assertions for the new 26.04 minimal distros. |
cameronmeissner
requested review from
AbelHu,
Devinwong,
SriHarsha001,
awesomenix,
calvin197,
djsly,
ganeshkumarashok,
lilypan26,
mxj220,
pdamianov-dev,
phealy,
r2k1,
runzhen,
sulixu,
surajssd,
timmy-wright,
xuexu6666 and
zachary-bailey
as code owners
zachary-bailey
approved these changes
Jul 2, 2026
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What this PR does / why we need it:
add SIG image config for initial 26.04 minimal distros - note that this PR also removes all config related to unused/deprecated 2204 minimal distros
Which issue(s) this PR fixes:
Fixes #