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Fix Gitea CI runner labels and persist systemd hardening #46

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codex wants to merge 6 commits from fix/gitea-ci-runner-labels into main
pull from: fix/gitea-ci-runner-labels
merge into: admin:main
Conversation 3 Commits 6 Files Changed 18
+462 -91
codex commented 2026-10-14 18:10:07 +00:00
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Changes

  • Target the registered akyldash-ci runner label in both workflows.
  • Persist ProtectHome=read-only in runner IaC and migrate only the known one-line unit difference.
  • Validate Compose statically and run Caddy 2.11.6 directly from a SHA-512 verified binary; remove the docker run dependency.
  • Keep both Dockerfile builds required. Add regression tests and document the rootless BuildKit architecture.
  • Limit read-only access to the runner daemon log with a named ACL, reapply it after service start and log rotation, and document the observed host state. No VPS changes were made.

Build architecture finding

Rootless BuildKit inside the current job container would require weaker seccomp/AppArmor or the discouraged no-process-sandbox mode. A disposable separate VM running rootless BuildKit, reached with a short-lived mTLS buildctl connection, remains the recommended option for the required image builds. This is not confirmed as the cause of run 53; that run failed before Docker builds.

Confirmed CI failure and fix

The full log for task 305 identified Check host audit root guard as the failing step (exit 1). Previous backend (37 tests, 1 skipped), Telegram (6), backup/restore (16), recovery host identity guard, and verifier helper guard steps passed. Reproduction with EUID=0 and bash -x showed the test invoked the audit as root, then failed because it expected the non-root denial message. Gitea job commands run as root in the job container. The test now uses setpriv to run the audit as UID 65534 when the test starts as root; the production root guard is unchanged. Failure output now includes the audit exit code and captured output.

Latest CI result

Fix commit d178d64 is pushed. Smoke run 56 passed; main CI run 55 failed. The current API account cannot access its job log: the per-run jobs API returns an empty list and the repository-wide jobs API is owner-only (403). Therefore the next failed step is not known; no new cause is inferred.

Validation

Local host audit root guard, recovery host identity guard, verifier helper guard, shell syntax, and diff checks pass.

## Changes - Target the registered `akyldash-ci` runner label in both workflows. - Persist `ProtectHome=read-only` in runner IaC and migrate only the known one-line unit difference. - Validate Compose statically and run Caddy 2.11.6 directly from a SHA-512 verified binary; remove the `docker run` dependency. - Keep both Dockerfile builds required. Add regression tests and document the rootless BuildKit architecture. - Limit read-only access to the runner daemon log with a named ACL, reapply it after service start and log rotation, and document the observed host state. No VPS changes were made. ## Build architecture finding Rootless BuildKit inside the current job container would require weaker seccomp/AppArmor or the discouraged no-process-sandbox mode. A disposable separate VM running rootless BuildKit, reached with a short-lived mTLS `buildctl` connection, remains the recommended option for the required image builds. This is not confirmed as the cause of run 53; that run failed before Docker builds. ## Confirmed CI failure and fix The full log for task 305 identified `Check host audit root guard` as the failing step (exit 1). Previous backend (37 tests, 1 skipped), Telegram (6), backup/restore (16), recovery host identity guard, and verifier helper guard steps passed. Reproduction with `EUID=0` and `bash -x` showed the test invoked the audit as root, then failed because it expected the non-root denial message. Gitea job commands run as root in the job container. The test now uses `setpriv` to run the audit as UID 65534 when the test starts as root; the production root guard is unchanged. Failure output now includes the audit exit code and captured output. ## Latest CI result Fix commit `d178d64` is pushed. Smoke run 56 passed; main CI run 55 failed. The current API account cannot access its job log: the per-run jobs API returns an empty list and the repository-wide jobs API is owner-only (403). Therefore the next failed step is not known; no new cause is inferred. ## Validation Local host audit root guard, recovery host identity guard, verifier helper guard, shell syntax, and diff checks pass.
codex added 1 commit 2026-10-14 18:10:07 +00:00
fix: align Gitea CI with runner isolation
CI / tests-and-images (pull_request) Failing after 1m17s
Details
Runner smoke test / runner-smoke (pull_request) Successful in 4s
Details
e373b81290
codex added 1 commit 2026-10-14 20:16:10 +00:00
ci: validate Caddy without Docker and document BuildKit path
CI / tests-and-images (pull_request) Failing after 13s
Details
Runner smoke test / runner-smoke (pull_request) Successful in 4s
Details
73aa147881
codex added 1 commit 2026-10-14 20:48:04 +00:00
fix: restrict runner log ACL across rotation
CI / tests-and-images (pull_request) Failing after 12s
Details
Runner smoke test / runner-smoke (pull_request) Successful in 4s
Details
7701e77b3d
codex added 1 commit 2026-10-14 20:49:51 +00:00
docs: record runner CI rerun diagnostics
CI / tests-and-images (pull_request) Failing after 11s
Details
Runner smoke test / runner-smoke (pull_request) Successful in 4s
Details
c195beba6d
codex added 1 commit 2026-10-15 12:44:32 +00:00
fix: run host audit guard test as non-root
CI / tests-and-images (pull_request) Failing after 10s
Details
Runner smoke test / runner-smoke (pull_request) Successful in 2s
Details
d178d64fc2
codex added 1 commit 2026-10-16 11:11:26 +00:00
fix: run root guard tests without root privileges
CI / tests-and-images (pull_request) Failing after 14s
Details
Runner smoke test / runner-smoke (pull_request) Successful in 1s
Details
5025152e02
agent commented 2026-10-21 05:35:07 +00:00
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Independent audit of head 5025152e02a9e06ccd78f6558c58ad2cec52059d against current main (b845316ee70d8dcb3b31e8b552baac63067188b2):

  • This head has CI run #57 failure (after 14s) and smoke run #58 success. The accessible jobs list for #57 is empty, so the failing step and cause are unconfirmed.
  • PR #47 already brought the akyldash-ci label, unprivileged root-guard checks, and isolated Caddy/Kaniko actions into main. Current main passed CI #103 and smoke #104.
  • This branch diverged before PR #47 and conflicts with current main in eight files. Merging its current tree would restore direct docker build and a Caddy binary download in the job, and remove newer corpus/release documentation.

Please do not merge this branch as-is to address CI #57. The ProtectHome=read-only and runner-log ACL proposals should be evaluated against current host evidence and, if still needed, submitted as a focused change from current main; they should not be discarded or ported automatically. This is an initial audit only; no merge or close action was taken.

Independent audit of head `5025152e02a9e06ccd78f6558c58ad2cec52059d` against current `main` (`b845316ee70d8dcb3b31e8b552baac63067188b2`): - This head has CI run #57 `failure` (after 14s) and smoke run #58 `success`. The accessible jobs list for #57 is empty, so the failing step and cause are unconfirmed. - PR #47 already brought the `akyldash-ci` label, unprivileged root-guard checks, and isolated Caddy/Kaniko actions into `main`. Current `main` passed CI #103 and smoke #104. - This branch diverged before PR #47 and conflicts with current `main` in eight files. Merging its current tree would restore direct `docker build` and a Caddy binary download in the job, and remove newer corpus/release documentation. Please do not merge this branch as-is to address CI #57. The `ProtectHome=read-only` and runner-log ACL proposals should be evaluated against current host evidence and, if still needed, submitted as a focused change from current `main`; they should not be discarded or ported automatically. This is an initial audit only; no merge or close action was taken.
agent commented 2026-10-21 05:47:01 +00:00
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Follow-up assessment of head 5025152e02a9e06ccd78f6558c58ad2cec52059d against main d2fb4b81c0192b17ced3c41ee22791008920b867:

  • The akyldash-ci label, unprivileged guard helper, and isolated Caddy/Kaniko image checks are already in main; current CI/smoke have passed there. PR #46 is unmergeable and its branch tree would remove newer corpus work and return CI to direct docker build. I recommend closing this PR as superseded, without merging it.
  • One narrow follow-up is justified after the owner verifies the effective live unit: the tracked installer still writes ProtectHome=yes, while the runner service uses DOCKER_HOST=unix:///run/user/<runner UID>/docker.sock and explicitly lists that path in ReadWritePaths. systemd makes /run/user inaccessible with ProtectHome=yes; read-only keeps it visible (systemd.exec: https://www.freedesktop.org/software/systemd/man/latest/systemd.exec.html#ProtectHome=). Earlier owner evidence reported a live read-only override. If still true, persist and test only the necessary unit/socket access from current main before any installer rerun; avoid importing the old workflow or docs wholesale.
  • The proposed named codex ACL on /var/log/akyldash-runner/act_runner.log is not justified by the CI issue. The unit writes runner daemon output to that file, while recovery docs direct operators to systemctl status and journalctl; neither provides the missing Gitea job-step output. Granting codex directory traversal and log read would expand access to runner task metadata. Keep that change out unless a separate, explicit need and security review establish it. The old observation of file mode 0644 alone does not establish effective access through its 0750 parent.

No host configuration, code, PR state, or permissions were changed in this assessment.

Follow-up assessment of head `5025152e02a9e06ccd78f6558c58ad2cec52059d` against `main` `d2fb4b81c0192b17ced3c41ee22791008920b867`: - The `akyldash-ci` label, unprivileged guard helper, and isolated Caddy/Kaniko image checks are already in `main`; current CI/smoke have passed there. PR #46 is unmergeable and its branch tree would remove newer corpus work and return CI to direct `docker build`. I recommend closing this PR as superseded, without merging it. - One narrow follow-up is justified after the owner verifies the effective live unit: the tracked installer still writes `ProtectHome=yes`, while the runner service uses `DOCKER_HOST=unix:///run/user/<runner UID>/docker.sock` and explicitly lists that path in `ReadWritePaths`. systemd makes `/run/user` inaccessible with `ProtectHome=yes`; `read-only` keeps it visible (systemd.exec: https://www.freedesktop.org/software/systemd/man/latest/systemd.exec.html#ProtectHome=). Earlier owner evidence reported a live `read-only` override. If still true, persist and test only the necessary unit/socket access from current `main` before any installer rerun; avoid importing the old workflow or docs wholesale. - The proposed named `codex` ACL on `/var/log/akyldash-runner/act_runner.log` is not justified by the CI issue. The unit writes runner daemon output to that file, while recovery docs direct operators to `systemctl status` and `journalctl`; neither provides the missing Gitea job-step output. Granting `codex` directory traversal and log read would expand access to runner task metadata. Keep that change out unless a separate, explicit need and security review establish it. The old observation of file mode 0644 alone does not establish effective access through its 0750 parent. No host configuration, code, PR state, or permissions were changed in this assessment.
agent commented 2026-10-21 06:05:51 +00:00
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Closing disposition for head 5025152e02a9e06ccd78f6558c58ad2cec52059d against current main 84ae32b8a3c1a2dbba2ec3cb9576405a606b95a0:

  • PR #47, merged as 0e276ae652fb56ecda043d083e17a715c1f62063, supplied the akyldash-ci label, unprivileged guard coverage, and isolated Caddy/Kaniko checks. These are present in current main.
  • PR #52, merged as 84ae32b8a3c1a2dbba2ec3cb9576405a606b95a0 after CI #121, smoke #122 and formal APPROVED #266, supplied the justified ProtectHome=read-only installer change while retaining the existing /run/user/$runner_uid writable carve-out. It did not grant codex runner-log access.
  • PR #46 remains unmergeable with failing CI #57; its older tree would restore direct docker build and remove newer corpus/release work. The proposed runner-log ACL has no demonstrated need and is not being ported.

All justified changes have a reviewed replacement in main. I am closing this superseded PR without merge or branch deletion.

Closing disposition for head `5025152e02a9e06ccd78f6558c58ad2cec52059d` against current `main` `84ae32b8a3c1a2dbba2ec3cb9576405a606b95a0`: - [PR #47](https://git.vakanaut.ru/admin/akyldash/pulls/47), merged as `0e276ae652fb56ecda043d083e17a715c1f62063`, supplied the `akyldash-ci` label, unprivileged guard coverage, and isolated Caddy/Kaniko checks. These are present in current `main`. - [PR #52](https://git.vakanaut.ru/admin/akyldash/pulls/52), merged as `84ae32b8a3c1a2dbba2ec3cb9576405a606b95a0` after CI #121, smoke #122 and formal APPROVED #266, supplied the justified `ProtectHome=read-only` installer change while retaining the existing `/run/user/$runner_uid` writable carve-out. It did not grant `codex` runner-log access. - PR #46 remains unmergeable with failing CI #57; its older tree would restore direct `docker build` and remove newer corpus/release work. The proposed runner-log ACL has no demonstrated need and is not being ported. All justified changes have a reviewed replacement in `main`. I am closing this superseded PR without merge or branch deletion.
agent closed this pull request 2026-10-21 06:06:03 +00:00

Pull request closed

Please reopen this pull request to perform a merge.
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Reference: admin/akyldash#46