Use Ubuntu 24.04 point-release ISO URLs by MaxRink · Pull Request #2100 · kubernetes-sigs/image-builder

MaxRink · 2026-07-05T21:15:30Z

Change description

Use Ubuntu 24.04 point-release download directories for the live-server ISO configs that already pin the 24.04.4 checksum, and update the MAAS arm64 24.04 config from 24.04.3 to 24.04.4.

This avoids depending on mutable series or codename aliases for Ubuntu 24.04 ISO downloads where Ubuntu already publishes point-release artifacts.

26.04 is intentionally unchanged because Ubuntu currently exposes ubuntu-26.04-live-server-amd64.iso but not a 26.04.0 point-release URL.

This also adds update-ubuntu-iso-urls and wires it into update-ubuntu-iso-checksums, so a scheduled/manual update workflow can discover newer Ubuntu point-release ISO URLs and checksums. Dependabot was checked, but it cannot track these arbitrary Packer JSON URL strings because Dependabot updates are driven by supported package ecosystems/manifests; the Make target is the maintainable path here.

Related issues

Related to #1334

Validation

git diff --check
jq empty for all changed JSON configs
Verified Ubuntu SHA256SUMS entries for 24.04.4 amd64 and arm64
Verified HTTP availability for the new 24.04.4 amd64 and arm64 ISO URLs
bash -n images/capi/hack/update-ubuntu-iso-urls.sh images/capi/hack/update-iso-checksums.sh
shellcheck images/capi/hack/update-ubuntu-iso-urls.sh images/capi/hack/update-iso-checksums.sh
cd images/capi && make update-ubuntu-iso-checksums
make validate-qemu-ubuntu-2404 validate-qemu-ubuntu-2404-efi
make validate-raw-ubuntu-2404 validate-raw-ubuntu-2404-efi
make validate-maas-ubuntu-2404-efi validate-maas-ubuntu-2404-arm64
make validate-node-ova-local-ubuntu-2404
env PROXMOX_URL=https://example.invalid:8006/api2/json PROXMOX_USERNAME=root@pam PROXMOX_TOKEN=dummy PROXMOX_NODE=pve1 PROXMOX_ISO_POOL=local PROXMOX_BRIDGE=vmbr0 PROXMOX_STORAGE_POOL=local-lvm make validate-proxmox-ubuntu-2404 validate-proxmox-ubuntu-2404-efi

kubernetes-prow · 2026-07-05T21:15:33Z

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

drew-viles

/ok-to-test

mboersma

/lgtm
/assign @drew-viles

This looks good to me, but let's get more eyes on it if possible.

drew-viles · 2026-07-18T08:58:35Z

/lgtm

mboersma · 2026-07-19T23:37:55Z

/label tide/merge-method-squash

drew-viles · 2026-08-06T15:57:34Z

/approve

kubernetes-prow · 2026-08-06T15:57:43Z

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: drew-viles

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kubernetes-prow · 2026-08-09T14:45:45Z

New changes are detected. LGTM label has been removed.

linux-foundation-easycla · 2026-08-11T21:56:31Z

The committers listed above are authorized under a signed CLA.

✅ login: MaxRink / name: Maximilian Rink (2a50566, 373dafb, 8ab571d, 971a78d, ae1ba04)

MaxRink · 2026-08-22T16:54:15Z

/test pull-ova-all

…ntu-iso-urls.sh Split the jq/mv pipeline into separate statements so a jq failure on the left side of && no longer gets masked by errexit, which previously let "Updated ..." print even when the file was left unchanged. Distinguish a legitimate "no point release yet" 404 from real curl/network/HTTP failures when fetching SHA256SUMS: 404 remains a soft skip, while connection errors or non-200/404 responses now abort the script with a non-zero exit instead of only warning and continuing.

kubernetes-prow Bot added the do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. label Jul 5, 2026

kubernetes-prow Bot requested review from jsturtevant and mdbooth July 5, 2026 21:15

MaxRink marked this pull request as ready for review July 6, 2026 12:23

kubernetes-prow Bot removed the do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. label Jul 6, 2026

kubernetes-prow Bot requested review from drew-viles and vasartori July 6, 2026 12:23

MaxRink marked this pull request as draft July 6, 2026 15:51

kubernetes-prow Bot added the do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. label Jul 6, 2026

MaxRink force-pushed the codex/issue-1334-immutable-iso-urls branch from 07eb012 to 14f491e Compare July 7, 2026 04:21

MaxRink marked this pull request as ready for review July 7, 2026 18:06

kubernetes-prow Bot removed the do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. label Jul 7, 2026

MaxRink force-pushed the codex/issue-1334-immutable-iso-urls branch 2 times, most recently from 43b9465 to 6734b7b Compare July 8, 2026 00:08

drew-viles reviewed Jul 8, 2026

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kubernetes-prow Bot added the ok-to-test Indicates a non-member PR verified by an org member that is safe to test. label Jul 8, 2026

mboersma approved these changes Jul 15, 2026

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kubernetes-prow Bot assigned drew-viles and mboersma Jul 15, 2026

kubernetes-prow Bot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Jul 15, 2026

drew-viles requested changes Jul 16, 2026

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Comment thread images/capi/hack/update-ubuntu-iso-urls.sh Outdated

Comment thread images/capi/hack/update-ubuntu-iso-urls.sh Outdated

MaxRink force-pushed the codex/issue-1334-immutable-iso-urls branch from 6734b7b to 01be0e8 Compare July 17, 2026 16:15

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kubernetes-prow Bot added the tide/merge-method-squash Denotes a PR that should be squashed by tide when it merges. label Jul 19, 2026

kubernetes-prow Bot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Aug 6, 2026

MaxRink force-pushed the codex/issue-1334-immutable-iso-urls branch from 01be0e8 to ae1ba04 Compare August 9, 2026 14:45

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kubernetes-prow Bot added cncf-cla: no Indicates the PR's author has not signed the CNCF CLA. and removed cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. labels Aug 11, 2026

MaxRink force-pushed the codex/issue-1334-immutable-iso-urls branch from c295a11 to 971a78d Compare August 12, 2026 00:59

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Comment thread images/capi/packer/qemu/scripts/render_ubuntu_autoinstall_test.py Outdated

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MaxRink force-pushed the codex/issue-1334-immutable-iso-urls branch from a1621ad to 8ab571d Compare August 22, 2026 16:30

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MaxRink mentioned this pull request Aug 22, 2026

capi: allow configuring Ansible Galaxy installs #2081

Open

MaxRink added 5 commits August 28, 2026 02:02

Use Ubuntu 24.04 point release ISO URLs

e441c61

capi: add Ubuntu ISO URL update helper

a5f7c42

capi: fix immutable Ubuntu 24.04 ISO URL

c5fac3c

test: avoid pinning Ubuntu point release

5831cd1

MaxRink force-pushed the codex/issue-1334-immutable-iso-urls branch from 8ab571d to 5831cd1 Compare August 28, 2026 00:04

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Use Ubuntu 24.04 point-release ISO URLs - #2100

Use Ubuntu 24.04 point-release ISO URLs#2100
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