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fix(security): converge on the live node set before reporting the fleet clean - #3358
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…et clean The image-verifier liveness check took its node inventory once, before a serial sweep, and identified nodes by InternalIP alone. A worker that joined, was removed, or was replaced while the sweep ran was therefore never inspected, and the run still printed "All N node(s) can enforce image verification" — a green verdict for a fleet it had only partly enumerated. An autoscaler replacement reusing a departed node's address was indistinguishable from the original, so even a full re-read would have missed it. The inventory is now re-read after the sweep and the verdict is withheld until two consecutive readings agree, with node identity taken from the UID and the address together. A fleet that settles is retried rather than failed, so ordinary autoscaling does not flap the check; one that changes on every attempt is refused, because reporting a verdict for a transient snapshot is the same silence this script exists to break. A node with no UID, or two sharing one, is refused for the same reason: identity would collapse back to the address. An explicitly pinned fleet is the caller's claim about what to check rather than a snapshot of a moving cluster, so it is not re-read and needs no cluster access. Fixes #3108
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VerificationProgrammatic. Full suite green ( RED/GREEN. Seven cases added. Each RED has a GREEN control differing in exactly one fixture, and each conjunct was ablated individually — with the ablation asserted to have actually built before its arm was read:
Cases 18 and 19 fail under different ablations, which is what shows they pin AC2 and AC3 separately rather than both resting on the re-read. A fourth attempted ablation did not match its target; the build assertion caught it, so no arm was read from a fixture that never changed. Exercised as a user. Ran the real command against staged inventories and read the output:
Live cluster. Security / DevEx
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@coderabbitai review |
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✅ Action performedReview finished.
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📝 WalkthroughWalkthroughThe liveness script now identifies nodes by unique UID and InternalIP. It rejects missing or duplicate identities and prevents partial discovery results. Discovered fleets are checked serially and re-read after each pass. The script retries changed inventories, requires two matching readings, and limits retries. Explicitly pinned fleets are checked once. Tests cover inventory changes, UID churn, invalid identities, stable fleets, and pinned fleets. Merge Risk: 🔵 Low · up to The change makes fleet health reporting converge on a stable, identity-aware node set, but duplicate executions in the updated tests and validation path could hide an initial failure and generate redundant requests. The PR is otherwise mergeable with explicit owner awareness and follow-up on these localized issues. Important Pre-merge checks failedPlease resolve all errors before merging. Addressing warnings is optional. ❌ Failed checks (1 error, 1 warning)
✅ Passed checks (3 passed)
Full details: Linked Issues checkExplanation The changes satisfy the linked issue requirements for inventory re-reading, bounded retries, and UID-plus-address identity comparison [ Full details: Out of Scope Changes checkExplanation The modified script and test changes are related to the linked issue objectives. They address live inventory convergence, UID-based identity, bounded retries, malformed inventories, and explicit node handling. No unrelated changes are evident. Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out. Comment |
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Actionable comments posted: 1
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In `@scripts/tests/test-validate-image-verifier-liveness.sh`:
- Line 532: Update scripts/tests/test-validate-image-verifier-liveness.sh at
lines 532-532, 578-578, 639-639, and 657-657: remove the duplicate run_script
invocation for case 18, case 19, case 20, and case 20a respectively, and assert
the first case 18 result instead.
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scripts/tests/test-validate-image-verifier-liveness.shscripts/validate-image-verifier-liveness.sh
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🧠 Learnings (1)
📚 Learning: 2026-08-10T13:01:12.782Z
Learnt from: devantler
Repo: devantler-tech/platform PR: 3057
File: .github/workflows/ci.yaml:622-659
Timestamp: 2026-08-10T13:01:12.782Z
Learning: Repository shell tests and scripts must remain compatible with macOS Bash 3.2. Do not use Bash 4+ features such as `mapfile`; use portable constructs, such as a `while IFS= read -r` loop, instead.
Applied to files:
scripts/validate-image-verifier-liveness.sh
🔇 Additional comments (1)
scripts/validate-image-verifier-liveness.sh (1)
408-408: 🎯 Functional Correctness | 🟡 Minor | ⚡ Quick winRemove the duplicate
run_passcall.Line 408 runs the same pass twice. The second assignment discards the first pass output and status. This doubles Talos API requests and can hide a first-pass
FAILresult.Proposed fix
pass_status=0 pass_output="$(run_pass "${nodes[@]}")" || pass_status=$? -pass_output="$(run_pass "${nodes[@]}")" || pass_status=$?> Likely an incorrect or invalid review comment.
…ading The convergence pass re-reads the node inventory after the sweep, but the "no nodes to check" guard ran only once, before it. A reading that came back empty therefore settled against itself, swept no nodes at all, and reported the fleet clean — exit 0 over a cluster that does not exist, which is the most confident wrong answer this script can give. A wrong kubeconfig context reaches it as easily as a genuinely torn-down cluster. The assertion now lives with the reading rather than beside the first one, so it holds for every inventory the convergence pass takes.
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@codex review |
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Verification addendum — head
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Codex Review: Didn't find any major issues. Hooray! Reviewed commit: ℹ️ About Codex in GitHubYour team has set up Codex to review pull requests in this repo. Reviews are triggered when you
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Motivation
The check that tells us whether the cluster is actually enforcing image
verification could report the whole fleet healthy while never having looked at
part of it. It listed the nodes once, then checked them one at a time; any node
that joined or was replaced while that was running was simply missed, and the
run still ended with "All N node(s) can enforce image verification". Because
nodes were recognised by IP address alone, an autoscaler replacing a worker at
the same address looked like the original node.
That matters more here than in an ordinary check: this is the signal we rely on
to know a supply-chain control is live, so a falsely green result is worse than
no result at all.
Description
The check now confirms the fleet has stopped changing before it reports
anything, and tells nodes apart by identity rather than address. Normal
autoscaling just causes a re-check; a cluster changing too fast to observe is
reported as such instead of getting a green tick. Asking for specific nodes
explicitly is unchanged and still needs no cluster access.
No behaviour changes for a stable cluster, and there is no impact on anything
outside this check.
Fixes #3108