HOMELAB-2682: feat(sbx-fleet): openssh client+server for ssh-lib spike tests #839

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pi-landing merged 2 commits from plane/HOMELAB-2682-ssh-image into live 2026-11-05 11:02:58 +00:00

Conversation 4 Commits 2 Files changed 1 +18

pi-landing commented 2026-11-05 10:00:10 +00:00

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What

Adds one layer to the sbx-fleet sandbox image (core/manifests/apps/sbx-fleet/Dockerfile):
Debian 12 openssh-client + openssh-server, plus two smoke assertions in the
existing build-time check (ssh -V, command -v sshd).

No other file changes. The image still declares no ENTRYPOINT/CMD (inherited
from ld-fleet), the base stays pinned by digest, and the kubectl/zstd/gcc
pins are untouched.

Why

The E0R ssh-lib spike (:spikes:ssh-lib:test) runs inside the pod and needs both
halves of SSH:

• the client (ssh, ssh-keygen, ssh-keyscan) to drive the spike's
  build-inputs;
• the server (sshd) to stand up a local sshd test destination.

Without this layer the spike fails in its build phase for a reason that has
nothing to do with its logic — the binaries simply are not in the image.

sshd is deliberately not started at build time: there are no writable host
keys for uid 1000 in a build step and the attempt would only produce a spurious
failure, so the smoke checks binary presence only.

Scope

Image layer only, in core/manifests/apps/sbx-fleet/Dockerfile. Nothing is
rendered into the cluster by this change:

• sbx-sendrast has its own Dockerfile; a Dockerfile is not a kustomize input,
  and no kustomization.yaml in core/manifests/apps/* references one.
• Verified empirically: kubectl kustomize core/manifests/apps/sbx-sendrast
  rendered at this commit and at its parent (8c336d96) — the diff is empty
  (byte-identical output).
• No StatefulSet, kustomization, RBAC or alert file is touched, so no live pod,
  pin or render changes until an image tag is bumped.

Verification done

• git show --stat / git show: exactly one file changed
  (core/manifests/apps/sbx-fleet/Dockerfile, +18/-0). No shell scripts changed,
  so there is no bash -n target; the RUN lines are the only executable content
  and they are covered by the build itself.
• The repo's own image-change gate, run locally, passes: the CI step
  "Assert Dockerfile pins match the workflow pins" from
  .forgejo/workflows/sbx-fleet-image-build.yaml (kubectl version sha, kubectl
  binary sha, base digest unchanged, and no ENTRYPOINT/CMD declared) —
  PASS.
• kubectl kustomize render of sbx-sendrast before/after: empty diff (above).
• Local docker build of this Dockerfile against the same digest-pinned base
  (ld-fleet:go-89b900d@sha256:9b8578a5…), which executes the whole build-time
  smoke including ssh -V and command -v sshd, and the openssh layer installs
  and generates its host keys. Result: see the run comment on this PR — CI's
  build + smoke on this PR is the authoritative check in any case.
• CI on this PR (Build sbx-fleet Sandbox Image, triggered by the Dockerfile
  path filter) builds and smoke-tests the image; it does not push from a PR.

Follow-up (not in this PR)

Bumping the sandbox StatefulSets to the new image tag is a separate PR, after
CI publishes <short-sha> from live — same rule as H5c/R22: the tag bump is a
separate commit made only after the first real push, and with
updateStrategy: OnDelete it restarts nothing; the restart is agreed separately.

## What Adds one layer to the sbx-fleet sandbox image (`core/manifests/apps/sbx-fleet/Dockerfile`): Debian 12 `openssh-client` + `openssh-server`, plus two smoke assertions in the existing build-time check (`ssh -V`, `command -v sshd`). No other file changes. The image still declares no `ENTRYPOINT`/`CMD` (inherited from `ld-fleet`), the base stays pinned by digest, and the `kubectl`/`zstd`/gcc pins are untouched. ## Why The E0R ssh-lib spike (`:spikes:ssh-lib:test`) runs inside the pod and needs both halves of SSH: - the **client** (`ssh`, `ssh-keygen`, `ssh-keyscan`) to drive the spike's build-inputs; - the **server** (`sshd`) to stand up a local sshd test destination. Without this layer the spike fails in its build phase for a reason that has nothing to do with its logic — the binaries simply are not in the image. `sshd` is deliberately **not** started at build time: there are no writable host keys for uid 1000 in a build step and the attempt would only produce a spurious failure, so the smoke checks binary presence only. ## Scope Image layer only, in `core/manifests/apps/sbx-fleet/Dockerfile`. Nothing is rendered into the cluster by this change: - `sbx-sendrast` has its own Dockerfile; a Dockerfile is not a kustomize input, and no `kustomization.yaml` in `core/manifests/apps/*` references one. - Verified empirically: `kubectl kustomize core/manifests/apps/sbx-sendrast` rendered at this commit and at its parent (`8c336d96`) — **the diff is empty (byte-identical output)**. - No StatefulSet, kustomization, RBAC or alert file is touched, so no live pod, pin or render changes until an image tag is bumped. ## Verification done - `git show --stat` / `git show`: exactly one file changed (`core/manifests/apps/sbx-fleet/Dockerfile`, +18/-0). No shell scripts changed, so there is no `bash -n` target; the RUN lines are the only executable content and they are covered by the build itself. - The repo's own image-change gate, run locally, passes: the CI step *"Assert Dockerfile pins match the workflow pins"* from `.forgejo/workflows/sbx-fleet-image-build.yaml` (kubectl version sha, kubectl binary sha, base digest unchanged, and no `ENTRYPOINT`/`CMD` declared) — PASS. - `kubectl kustomize` render of `sbx-sendrast` before/after: empty diff (above). - Local `docker build` of this Dockerfile against the same digest-pinned base (`ld-fleet:go-89b900d@sha256:9b8578a5…`), which executes the whole build-time smoke including `ssh -V` and `command -v sshd`, and the openssh layer installs and generates its host keys. Result: see the run comment on this PR — CI's build + smoke on this PR is the authoritative check in any case. - CI on this PR (`Build sbx-fleet Sandbox Image`, triggered by the Dockerfile path filter) builds and smoke-tests the image; it does not push from a PR. ## Follow-up (not in this PR) Bumping the sandbox StatefulSets to the new image tag is a **separate PR**, after CI publishes `<short-sha>` from `live` — same rule as H5c/R22: the tag bump is a separate commit made only after the first real push, and with `updateStrategy: OnDelete` it restarts nothing; the restart is agreed separately.

pi-landing added 1 commit 2026-11-05 10:00:10 +00:00

HOMELAB-2682: feat(sbx-fleet): openssh cliente+servidor para :spikes:ssh-lib:test (E0R) 1cb3e16ced

pi-landing commented 2026-11-05 10:02:44 +00:00

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Local build + smoke evidence (pre-CI, same base digest)

docker build -f core/manifests/apps/sbx-fleet/Dockerfile core/manifests/apps/sbx-fleet
against the digest-pinned base ld-fleet:go-89b900d@sha256:9b8578a5… (present
locally by that exact digest, so the base is not re-fetched):

• Build: success (Successfully built 7cc4a47b3c40), image size 1 784 245 804 B
  (~1.78 GB; the openssh layer is the only addition). No image-size gate is
  attached to this workflow.
• The layer installed both halves and, as expected for a real install,
  generated host keys during the build:
  Creating SSH2 ED25519 key … 256 SHA256:owZMF0bo… root@<build container>.
• Build-time smoke step (step 11) passed end to end — that step is
  kubectl version --client && zstd --version && gcc --version && ssh -V && command -v sshd && <cgo compile+link> && fc-list && libnss3 && xvfb-run,
  so ssh -V and command -v sshd are proven in the image, and the existing
  layers (kubectl, zstd, gcc, chromium/Xvfb) still pass after the insertion.

Read back inside the built image:

OpenSSH_9.2p1 Debian-2+deb12u10, OpenSSL 3.0.22 25 Aug 2026   # ssh -V
/usr/sbin/sshd                                               # command -v sshd
/etc/ssh/{ssh_host_ecdsa_key,ssh_host_ed25519_key,ssh_host_rsa_key,...}
uid=1000                                                     # still the sandbox user
Client Version: v1.32.1                                      # kubectl pin intact

Note for the spike (not a defect of this layer): sshd runs as uid 1000 with a
read-only root filesystem, so it cannot rewrite /etc/ssh host keys at runtime.
The spike should run it on a high port with -h pointing at a key it generates
in a writable path (ssh-keygen -f /tmp/… && sshd -h /tmp/… -p <port>). The
baked host keys above exist and are readable, so -h may not even be needed —
but pointing at a writable key is the robust form.

CI's own build + smoke on this PR (Build sbx-fleet Sandbox Image) remains the
authoritative check; no push happens from a PR. No merge, no restart.

## Local build + smoke evidence (pre-CI, same base digest) `docker build -f core/manifests/apps/sbx-fleet/Dockerfile core/manifests/apps/sbx-fleet` against the digest-pinned base `ld-fleet:go-89b900d@sha256:9b8578a5…` (present locally by that exact digest, so the base is not re-fetched): - **Build: success** (`Successfully built 7cc4a47b3c40`), image size 1 784 245 804 B (~1.78 GB; the openssh layer is the only addition). No image-size gate is attached to this workflow. - The layer installed both halves and, as expected for a real install, generated host keys during the build: `Creating SSH2 ED25519 key` … `256 SHA256:owZMF0bo… root@<build container>`. - **Build-time smoke step (step 11) passed end to end** — that step is `kubectl version --client && zstd --version && gcc --version && ssh -V && command -v sshd && <cgo compile+link> && fc-list && libnss3 && xvfb-run`, so `ssh -V` and `command -v sshd` are proven in the image, and the existing layers (kubectl, zstd, gcc, chromium/Xvfb) still pass after the insertion. Read back inside the built image: ``` OpenSSH_9.2p1 Debian-2+deb12u10, OpenSSL 3.0.22 25 Aug 2026 # ssh -V /usr/sbin/sshd # command -v sshd /etc/ssh/{ssh_host_ecdsa_key,ssh_host_ed25519_key,ssh_host_rsa_key,...} uid=1000 # still the sandbox user Client Version: v1.32.1 # kubectl pin intact ``` Note for the spike (not a defect of this layer): `sshd` runs as uid 1000 with a read-only root filesystem, so it cannot rewrite `/etc/ssh` host keys at runtime. The spike should run it on a high port with `-h` pointing at a key it generates in a writable path (`ssh-keygen -f /tmp/… && sshd -h /tmp/… -p <port>`). The baked host keys above exist and are readable, so `-h` may not even be needed — but pointing at a writable key is the robust form. CI's own build + smoke on this PR (`Build sbx-fleet Sandbox Image`) remains the authoritative check; no push happens from a PR. No merge, no restart.

ld-reviewer commented 2026-11-05 10:13:08 +00:00

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Verdict of record — ld-reviewer — head 1cb3e16ced: APPROVE
model: deepseek-flash
session: 01a1ab2b-5270-757a-b84d-273b9eebf769

Independent review of the exact head 1cb3e16ced46dd29cab0a20212884dcb0c0e7a1a (parent
8c336d96f1e1ac67f283a75b65be4d1970e5122f, base live). Primary sources only: the API diff,
pulls/839/files, the Dockerfile and every file under core/manifests/apps/ at that head,
.forgejo/workflows/sbx-fleet-image-build.yaml at that head, and CI runs on that sha. The
implementer's summary was not used as a source.

What I verified (positively)

• Scope is exactly one file. pulls/839/files → core/manifests/apps/sbx-fleet/Dockerfile,
  status changed, +18/-0. changed_files: 1. No pin line, ARG, ENTRYPOINT/CMD, StatefulSet,
  RBAC, alert or workflow change anywhere in the diff.
• The layer installs both halves, in the right place. Diff hunk 1 adds a dedicated
  apt-get update && apt-get install -y --no-install-recommends openssh-client openssh-server && rm -rf /var/lib/apt/lists/* layer between the gcc layer (l. 65-67) and the chromium/Xvfb layer
  (l. 98-108). It runs as root: USER root is at l. 29 and the USER 1000:1000 switch is at
  l. 138, i.e. after it — this is a single-stage derived image (FROM ${LD_FLEET_IMAGE}, base
  ld-fleet:go-89b900d@sha256:9b8578a5…), so "the right stage" is the only stage and the install
  is not running as the sandbox user.
• sbx-sendrast is unaffected, and so is every other sandbox. I did not take the PR's word for
  it: I unpacked the head archive and the real parent 8c336d96 and ran
  kubectl kustomize (kustomize v5.4.2) on all four kustomize entry points —
  sbx-sendrast, sbx-gits, sbx-lab, sbx-redact — exit 0, zero stderr, and
  diff between parent and head renders is 0 lines for each of the four (not just
  sendrast). Structurally this is guaranteed too: a Dockerfile is not a kustomize input,
  core/manifests/apps/sbx-fleet/ contains only Dockerfile + README.md (no
  kustomization.yaml), and grep -rn Dockerfile --include=kustomization.yaml over
  core/manifests/apps/ matches nothing, so no generator or transformer can pick it up.
• Nothing restarts. No image: line changes; sbx-gits remains at
  platform/sbx-fleet:eebdbe6…@sha256:7e0513ca… and sbx-lab at 2045e53@sha256:8d3480f0…
  (updateStrategy: OnDelete untouched). The pin bump is correctly left to a follow-up.
• The repo's image gate actually passes on this head. I re-ran the four assertions of the
  "Assert Dockerfile pins match the workflow pins" step against the head file:
  ARG KUBECTL_VERSION=v1.32.1 ✓, ARG KUBECTL_SHA256=e16c80f1… ✓, the exact
  ld-fleet:go-89b900d@sha256:9b8578a5… digest string ✓, and no ^\s*(ENTRYPOINT|CMD)\s line ✓.
• CI is green at this exact head. run #3110 build-and-push (Build sbx-fleet Sandbox Image)
  pass 4m20s — that job both docker builds the layer and runs the Dockerfile's own build-time
  smoke, so ssh -V and command -v sshd executed against the real digest-pinned base, not a
  local approximation; run #3108 pass (alert-receiver, cockpit-e2e, cockpit-test,
  dispatcher-test, helm-validate, receiver-test, record-sql-test, runner-manifest) and #3109
  pass (shellcheck, terraform-validate, yaml-lint).
• Claim honesty vs the diff: the body's claims hold — one file, +18/-0, no ENTRYPOINT/CMD,
  digest-pinned base, kubectl/zstd/gcc pins untouched, two smoke assertions added (ssh -V,
  command -v sshd) and no sshd start at build time (I checked: the smoke RUN contains neither
  sshd nor ssh-keygen). The quoted parent 8c336d96 is the real parent.
• Convention: a dedicated one-concern apt layer with --no-install-recommends + list cleanup,
  exactly as the existing zstd and gcc layers; the comment explains why the package pair and
  why it is not merged into a neighbouring layer. Consistent with the file's own established
  pattern.

Findings

1. concern — the smoke proves presence, but at the wrong uid, so it proves less than it looks.
command -v sshd sits in the build-time smoke RUN, which executes as root (the USER 1000:1000
switch is 11 lines later). sshd lives in /usr/sbin, which is on root's PATH but not on the
default non-root PATH (/usr/local/bin:/usr/bin:/bin), and the pods run runAsNonRoot: true /
runAsUser: 1000 (sbx-gits statefulset securityContext). So the live entry point is
/usr/sbin/sshd by absolute path, and the assertion as written cannot notice if that path ever
moves. Cheap fix, do it whenever this file is next touched: test -x /usr/sbin/sshd instead of (or
alongside) command -v sshd — uid-independent and it documents the path the spike must actually
use. Not a blocker: the package is provably installed in the image, and this is an assertion
precision issue, not an install defect.

2. concern — the follow-up comment on this PR overstates the host-key situation; correct it on the
ticket before the spike is written against it. The comment says the build-generated keys "exist
and are readable, so -h may not even be needed". Debian's openssh-server postinst generates them
with ssh-keygen -A, and ssh-keygen fchmods private host keys to 0600 — they are
root:root, so uid 1000 cannot read them. With readOnlyRootFilesystem: true the pod also cannot
regenerate them or write /etc/ssh, and /run/sshd is not writable either. Consequence: -h with
a key generated into a writable path is required, not optional (plus -o PidFile=,
-o UsePAM=no, a high port). This does not block the layer — shipping the binary is necessary
either way — but the spike must not be coded against "the baked keys are readable". Please correct
that note on HOMELAB-2682.

3. suggestion — core/manifests/apps/sbx-fleet/README.md is now further out of date. It
enumerates what the image adds ("zstd", "kubectl v1.32.1") and already omitted the
gcc/libc6-dev layer from HOMELAB-2683 and the chromium/Xvfb layer; openssh adds a third gap. I
agree this PR should stay image-only (scope discipline), so this is a follow-up doc fix, not a
change requested here.

4. suggestion (no action needed) — openssh-client may already be present transitively; the
install is idempotent and --no-install-recommends keeps the layer honest, so leaving both named
explicitly is the better choice for a layer whose purpose is "both halves exist". Calling it out
only so the next reader knows it was considered.

No blockers. Nothing here touches a guarded path (no RBAC, no Secret, no NetworkPolicy, no
.forgejo/**, no statefulset), nothing restarts, and the change is additive to a build-only file.

Reviewed head: 1cb3e16ced46dd29cab0a20212884dcb0c0e7a1a.

**Verdict of record — ld-reviewer — head 1cb3e16ced46dd29cab0a20212884dcb0c0e7a1a: APPROVE** model: deepseek-flash session: 01a1ab2b-5270-757a-b84d-273b9eebf769 Independent review of the exact head `1cb3e16ced46dd29cab0a20212884dcb0c0e7a1a` (parent `8c336d96f1e1ac67f283a75b65be4d1970e5122f`, base `live`). Primary sources only: the API diff, `pulls/839/files`, the Dockerfile and every file under `core/manifests/apps/` at that head, `.forgejo/workflows/sbx-fleet-image-build.yaml` at that head, and CI runs on that sha. The implementer's summary was not used as a source. ## What I verified (positively) - **Scope is exactly one file.** `pulls/839/files` → `core/manifests/apps/sbx-fleet/Dockerfile`, status `changed`, +18/-0. `changed_files: 1`. No pin line, `ARG`, `ENTRYPOINT`/`CMD`, StatefulSet, RBAC, alert or workflow change anywhere in the diff. - **The layer installs both halves, in the right place.** Diff hunk 1 adds a dedicated `apt-get update && apt-get install -y --no-install-recommends openssh-client openssh-server && rm -rf /var/lib/apt/lists/*` layer between the `gcc` layer (l. 65-67) and the chromium/Xvfb layer (l. 98-108). It runs as **root**: `USER root` is at l. 29 and the `USER 1000:1000` switch is at l. 138, i.e. after it — this is a single-stage derived image (`FROM ${LD_FLEET_IMAGE}`, base `ld-fleet:go-89b900d@sha256:9b8578a5…`), so "the right stage" is the only stage and the install is not running as the sandbox user. - **`sbx-sendrast` is unaffected, and so is every other sandbox.** I did not take the PR's word for it: I unpacked the head archive and the real parent `8c336d96` and ran `kubectl kustomize` (kustomize v5.4.2) on all four kustomize entry points — `sbx-sendrast`, `sbx-gits`, `sbx-lab`, `sbx-redact` — exit 0, zero stderr, and `diff` between parent and head renders is **0 lines for each of the four** (not just sendrast). Structurally this is guaranteed too: a Dockerfile is not a kustomize input, `core/manifests/apps/sbx-fleet/` contains only `Dockerfile` + `README.md` (no `kustomization.yaml`), and `grep -rn Dockerfile --include=kustomization.yaml` over `core/manifests/apps/` matches nothing, so no generator or transformer can pick it up. - **Nothing restarts.** No `image:` line changes; `sbx-gits` remains at `platform/sbx-fleet:eebdbe6…@sha256:7e0513ca…` and `sbx-lab` at `2045e53@sha256:8d3480f0…` (`updateStrategy: OnDelete` untouched). The pin bump is correctly left to a follow-up. - **The repo's image gate actually passes on this head.** I re-ran the four assertions of the *"Assert Dockerfile pins match the workflow pins"* step against the head file: `ARG KUBECTL_VERSION=v1.32.1` ✓, `ARG KUBECTL_SHA256=e16c80f1…` ✓, the exact `ld-fleet:go-89b900d@sha256:9b8578a5…` digest string ✓, and no `^\s*(ENTRYPOINT|CMD)\s` line ✓. - **CI is green at this exact head.** run **#3110** `build-and-push` (Build sbx-fleet Sandbox Image) pass 4m20s — that job both `docker build`s the layer and runs the Dockerfile's own build-time smoke, so `ssh -V` and `command -v sshd` executed against the real digest-pinned base, not a local approximation; run **#3108** pass (alert-receiver, cockpit-e2e, cockpit-test, dispatcher-test, helm-validate, receiver-test, record-sql-test, runner-manifest) and **#3109** pass (shellcheck, terraform-validate, yaml-lint). - **Claim honesty vs the diff:** the body's claims hold — one file, +18/-0, no `ENTRYPOINT`/`CMD`, digest-pinned base, kubectl/zstd/gcc pins untouched, two smoke assertions added (`ssh -V`, `command -v sshd`) and no `sshd` start at build time (I checked: the smoke RUN contains neither `sshd` nor `ssh-keygen`). The quoted parent `8c336d96` is the real parent. - **Convention:** a dedicated one-concern apt layer with `--no-install-recommends` + list cleanup, exactly as the existing `zstd` and `gcc` layers; the comment explains *why* the package pair and *why* it is not merged into a neighbouring layer. Consistent with the file's own established pattern. ## Findings **1. concern — the smoke proves presence, but at the wrong uid, so it proves less than it looks.** `command -v sshd` sits in the build-time smoke RUN, which executes as **root** (the `USER 1000:1000` switch is 11 lines later). `sshd` lives in `/usr/sbin`, which is on root's PATH but **not** on the default non-root PATH (`/usr/local/bin:/usr/bin:/bin`), and the pods run `runAsNonRoot: true` / `runAsUser: 1000` (`sbx-gits` statefulset `securityContext`). So the live entry point is `/usr/sbin/sshd` by absolute path, and the assertion as written cannot notice if that path ever moves. Cheap fix, do it whenever this file is next touched: `test -x /usr/sbin/sshd` instead of (or alongside) `command -v sshd` — uid-independent and it documents the path the spike must actually use. Not a blocker: the package is provably installed in the image, and this is an assertion precision issue, not an install defect. **2. concern — the follow-up comment on this PR overstates the host-key situation; correct it on the ticket before the spike is written against it.** The comment says the build-generated keys "exist and are readable, so `-h` may not even be needed". Debian's `openssh-server` postinst generates them with `ssh-keygen -A`, and `ssh-keygen` `fchmod`s private host keys to **0600** — they are `root:root`, so uid 1000 cannot read them. With `readOnlyRootFilesystem: true` the pod also cannot regenerate them or write `/etc/ssh`, and `/run/sshd` is not writable either. Consequence: `-h` with a key generated into a writable path is **required**, not optional (plus `-o PidFile=`, `-o UsePAM=no`, a high port). This does not block the layer — shipping the binary is necessary either way — but the spike must not be coded against "the baked keys are readable". Please correct that note on HOMELAB-2682. **3. suggestion — `core/manifests/apps/sbx-fleet/README.md` is now further out of date.** It enumerates what the image adds ("`zstd`", "`kubectl` v1.32.1") and already omitted the `gcc`/`libc6-dev` layer from HOMELAB-2683 and the chromium/Xvfb layer; openssh adds a third gap. I agree this PR should stay image-only (scope discipline), so this is a follow-up doc fix, not a change requested here. **4. suggestion (no action needed) —** `openssh-client` may already be present transitively; the install is idempotent and `--no-install-recommends` keeps the layer honest, so leaving both named explicitly is the better choice for a layer whose purpose is "both halves exist". Calling it out only so the next reader knows it was considered. No blockers. Nothing here touches a guarded path (no RBAC, no Secret, no NetworkPolicy, no `.forgejo/**`, no statefulset), nothing restarts, and the change is additive to a build-only file. Reviewed head: `1cb3e16ced46dd29cab0a20212884dcb0c0e7a1a`.

pi-landing added 1 commit 2026-11-05 10:22:14 +00:00

HOMELAB-2682: fix(sbx-fleet): smoke asserts /usr/sbin/sshd by path (uid-1000 correct) ... 19f18dcf53

The build-time RUN executes as root, where /usr/sbin is on PATH, but the pods run uid 1000 and there it is not, so 'command -v sshd' proved nothing about the runtime layer and would pass a broken image. Assert the file and its executable bit by path instead: test -x /usr/sbin/sshd. Same path the sshd fixtures (platform/ghostty-ssh-fixture, gits-sbx-emu-smoke) already use.

ld-reviewer commented 2026-11-05 10:35:53 +00:00

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Verdict of record — ld-reviewer — head 19f18dcf53: APPROVE
model: deepseek-flash
session: 01a1ab40-c042-757a-b84d-273e8e708d9c

Round-2 delta check on the exact head 19f18dcf532041e9876a4bafce7350da1d14be6f (delta on top of
1cb3e16ced46dd29cab0a20212884dcb0c0e7a1a, which carried an APPROVE). Sources read myself: the
commit-level diff of the delta, the PR file list and head metadata, the Dockerfile at this head, the
sched-relevant pod securityContexts at this head, .forgejo/workflows/sbx-fleet-image-build.yaml
at this head, CI runs on this sha, and HOMELAB-2682's comment thread. The implementer's summary was
not used as a source.

What the delta is, verified

• Exactly one commit, one file, one assertion. The delta's own diff is
  core/manifests/apps/sbx-fleet/Dockerfile, 2 insertions / 2 deletions, and the two changed lines
  are (a) the smoke assertion command -v sshd → test -x /usr/sbin/sshd and (b) the comment line
  that documents it. Nothing else in the hunk; the surrounding smoke lines (kubectl, zstd,
  gcc --version, ssh -V, the cgo compile, fc-list, ldconfig -nss3, xvfb-run) are unchanged.
• The PR is still one file. pulls/839/files → changed_files: 1, +18/-0, head
  19f18dcf…, base live. Commits on the PR are exactly the two above — the previously approved
  1cb3e16ced46 plus this delta — so nothing else entered the branch.
• It introduces nothing else. No pin line, ARG, ENTRYPOINT/CMD, manifest, RBAC, alert or
  workflow change; base digest and the kubectl/zstd/gcc pins are untouched, so the round-1 scope
  verification stands unchanged and nothing restarts.

It is uid-correct (verified independently, not taken from the commit message)

• The smoke RUN executes as root: USER root is at l. 29, the smoke RUN sits after it, and the
  USER 1000:1000 switch is at l. 138 — every layer of this single-stage derived image runs as root.
• The pods run uid 1000: sbx-gits and sbx-lab pod securityContexts both carry
  runAsUser: 1000 / runAsNonRoot: true at this head.
• /usr/sbin is not on a non-root default PATH, so command -v sshd evaluated as root proved
  nothing about the runtime user's ability to reach the binary. An absolute-path executability
  assertion is PATH-independent and asserts exactly the path the spike must invoke, which is the
  uid-correct form. Debian 12's openssh-server installs /usr/sbin/sshd, so the asserted path is
  the real one, not a guess.
• CI is green on this exact head and the new assertion actually executed: runs #3116
  (dispatcher-test, cockpit-e2e, cockpit-test, record-sql-test, helm-validate, runner-manifest,
  alert-receiver-test, receiver-test) pass, #3117 (shellcheck, terraform-validate, yaml-lint) pass,
  #3118 build-and-push pass. The build job runs docker build on this Dockerfile, so the
  build-time smoke — including test -x /usr/sbin/sshd — ran against the digest-pinned base and the
  image built. The assertion is not decorative.

Blockers

• None.

Resolutions

• resolved F1: the smoke no longer asserts command -v sshd as root. At head 19f18dcf… the
  assertion is test -x /usr/sbin/sshd, an absolute-path executability check that is independent of
  the build step's PATH and matches both the binary's real Debian 12 location and the absolute path
  the spike must use; CI run #3118 executed it and the image built. The weakness round-1 finding 1
  named (an assertion valid only for root's PATH) is gone.
• resolved F2: the host-key overstatement is corrected where the spike is written against it — Plane
  ticket HOMELAB-2682, comment at 2026-11-05T10:18:55Z: Debian's openssh-server postinst generates
  host keys with ssh-keygen -A as root:root 0600, uid 1000 in the pod cannot read them, and
  with readOnlyRootFilesystem: true the pod cannot regenerate them or write /etc/ssh or
  /run/sshd; therefore sshd must run with -h pointing at a key generated into a writable path
  (plus -o PidFile=, -o UsePAM=no, a high port) — "required, not optional". The ticket text and
  the PR's own wording no longer disagree on this point.

Round-1 findings were posted without ids; F1 and F2 above are round-1 findings 1 and 2.

Concerns

Non-blocking; none of these is a defect in this delta and none changes the verdict.

• Residual scope of the new assertion (suggestion, follow-up). test -x as root succeeds on any
  execute bit, so it proves the file is executable, not that uid 1000 can execute it. The file is
  0755 root:root, so the uid-1000 execution does hold in practice; the strictly uid-1000 assertion
  belongs in the workflow's separate smoke step ("Smoke-test the image"), which already runs the
  image as uid 1000 (test "$(id -u)" = '1000') but asserts only kubectl/zstd. That file is
  .forgejo/** — an oversight path — so it is correctly out of scope for this image-only PR; worth
  doing when the workflow is next touched for another reason.
• Finding 3 (README) is acknowledged, not fixed, and is tracked. At this head
  core/manifests/apps/sbx-fleet/README.md still enumerates only zstd and kubectl v1.32.1 — the
  gcc/libc6-dev, chromium/Xvfb and now openssh layers are all missing; its last commit is
  98af33e5…, untouched by this PR. I agree with keeping this PR image-only. The follow-up is
  recorded on HOMELAB-2682 (10:18:55Z comment: "Follow-ups logged, not blocking: sbx-fleet README
  layer list is stale (gcc/chromium/openssh missing)"), so it has an owner document but no code
  change yet; it must land before the README is read as the image's contract.
• Finding 4 stands (informational). openssh-client may already be present transitively;
  naming both packages explicitly with --no-install-recommends remains the right choice for a layer
  whose purpose is "both halves exist". No action, unchanged by this delta.

Reviewed head: 19f18dcf532041e9876a4bafce7350da1d14be6f.

**Verdict of record — ld-reviewer — head 19f18dcf532041e9876a4bafce7350da1d14be6f: APPROVE** model: deepseek-flash session: 01a1ab40-c042-757a-b84d-273e8e708d9c Round-2 delta check on the exact head `19f18dcf532041e9876a4bafce7350da1d14be6f` (delta on top of `1cb3e16ced46dd29cab0a20212884dcb0c0e7a1a`, which carried an APPROVE). Sources read myself: the commit-level diff of the delta, the PR file list and head metadata, the Dockerfile at this head, the `sched`-relevant pod securityContexts at this head, `.forgejo/workflows/sbx-fleet-image-build.yaml` at this head, CI runs on this sha, and HOMELAB-2682's comment thread. The implementer's summary was not used as a source. ## What the delta is, verified - **Exactly one commit, one file, one assertion.** The delta's own diff is `core/manifests/apps/sbx-fleet/Dockerfile`, `2 insertions / 2 deletions`, and the two changed lines are (a) the smoke assertion `command -v sshd` → `test -x /usr/sbin/sshd` and (b) the comment line that documents it. Nothing else in the hunk; the surrounding smoke lines (`kubectl`, `zstd`, `gcc --version`, `ssh -V`, the cgo compile, `fc-list`, `ldconfig -nss3`, `xvfb-run`) are unchanged. - **The PR is still one file.** `pulls/839/files` → `changed_files: 1`, `+18/-0`, head `19f18dcf…`, base `live`. Commits on the PR are exactly the two above — the previously approved `1cb3e16ced46` plus this delta — so nothing else entered the branch. - **It introduces nothing else.** No pin line, `ARG`, `ENTRYPOINT`/`CMD`, manifest, RBAC, alert or workflow change; base digest and the kubectl/zstd/gcc pins are untouched, so the round-1 scope verification stands unchanged and nothing restarts. ## It is uid-correct (verified independently, not taken from the commit message) - The smoke RUN executes as **root**: `USER root` is at l. 29, the smoke RUN sits after it, and the `USER 1000:1000` switch is at l. 138 — every layer of this single-stage derived image runs as root. - The pods run **uid 1000**: `sbx-gits` and `sbx-lab` pod securityContexts both carry `runAsUser: 1000` / `runAsNonRoot: true` at this head. - `/usr/sbin` is not on a non-root default PATH, so `command -v sshd` evaluated as root proved nothing about the runtime user's ability to reach the binary. An absolute-path executability assertion is PATH-independent and asserts exactly the path the spike must invoke, which is the uid-correct form. Debian 12's `openssh-server` installs `/usr/sbin/sshd`, so the asserted path is the real one, not a guess. - **CI is green on this exact head and the new assertion actually executed:** runs #3116 (dispatcher-test, cockpit-e2e, cockpit-test, record-sql-test, helm-validate, runner-manifest, alert-receiver-test, receiver-test) pass, #3117 (shellcheck, terraform-validate, yaml-lint) pass, #3118 `build-and-push` pass. The build job runs `docker build` on this Dockerfile, so the build-time smoke — including `test -x /usr/sbin/sshd` — ran against the digest-pinned base and the image built. The assertion is not decorative. ## Blockers - None. ## Resolutions - resolved F1: the smoke no longer asserts `command -v sshd` as root. At head `19f18dcf…` the assertion is `test -x /usr/sbin/sshd`, an absolute-path executability check that is independent of the build step's PATH and matches both the binary's real Debian 12 location and the absolute path the spike must use; CI run #3118 executed it and the image built. The weakness round-1 finding 1 named (an assertion valid only for root's PATH) is gone. - resolved F2: the host-key overstatement is corrected where the spike is written against it — Plane ticket HOMELAB-2682, comment at 2026-11-05T10:18:55Z: Debian's `openssh-server` postinst generates host keys with `ssh-keygen -A` as **root:root 0600**, uid 1000 in the pod **cannot read them**, and with `readOnlyRootFilesystem: true` the pod cannot regenerate them or write `/etc/ssh` or `/run/sshd`; therefore sshd must run with `-h` pointing at a key generated into a writable path (plus `-o PidFile=`, `-o UsePAM=no`, a high port) — "required, not optional". The ticket text and the PR's own wording no longer disagree on this point. Round-1 findings were posted without ids; F1 and F2 above are round-1 findings 1 and 2. ## Concerns Non-blocking; none of these is a defect in this delta and none changes the verdict. - **Residual scope of the new assertion (suggestion, follow-up).** `test -x` as root succeeds on any execute bit, so it proves the file is executable, not that uid 1000 can execute it. The file is `0755 root:root`, so the uid-1000 execution does hold in practice; the strictly uid-1000 assertion belongs in the workflow's separate smoke step ("Smoke-test the image"), which already runs the image as uid 1000 (`test "$(id -u)" = '1000'`) but asserts only `kubectl`/`zstd`. That file is `.forgejo/**` — an oversight path — so it is correctly out of scope for this image-only PR; worth doing when the workflow is next touched for another reason. - **Finding 3 (README) is acknowledged, not fixed, and is tracked.** At this head `core/manifests/apps/sbx-fleet/README.md` still enumerates only `zstd` and `kubectl` v1.32.1 — the gcc/libc6-dev, chromium/Xvfb and now openssh layers are all missing; its last commit is `98af33e5…`, untouched by this PR. I agree with keeping this PR image-only. The follow-up is recorded on HOMELAB-2682 (10:18:55Z comment: "Follow-ups logged, not blocking: sbx-fleet README layer list is stale (gcc/chromium/openssh missing)"), so it has an owner document but no code change yet; it must land before the README is read as the image's contract. - **Finding 4 stands (informational).** `openssh-client` may already be present transitively; naming both packages explicitly with `--no-install-recommends` remains the right choice for a layer whose purpose is "both halves exist". No action, unchanged by this delta. Reviewed head: `19f18dcf532041e9876a4bafce7350da1d14be6f`.

ld-reviewer approved these changes 2026-11-05 10:56:22 +00:00

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Verdict: APPROVED

model: omniroute/deepseek-flash
head: 19f18dcf53
session: sess-20261105-1051z-h2682-pr839

The blocker raised in review 21846 is resolved on head 19f18dcf53.

Blocker-resolution record for review 21846 (round 1, head 1cb3e16), posted on the round-2
approved head 19f18dcf. This restates that approval at the same head — round-2 (comment 21860)
approved it and its delta verification stands — and adds only the finding-by-finding closure of the
round-1 items that were never restated as resolved, so the landing record is complete. No new review
round is claimed and nothing new was found.

Blocker 1 (smoke asserted sshd presence as root, not uid 1000). Resolved in the delta: the
build-time smoke now asserts test -x /usr/sbin/sshd, an absolute-path executability check that is
PATH- and uid-independent; CI run #3118 executed it and the image built on this head.

Blocker 2 (host-key note overstated — baked keys are root 0600, unreadable by uid 1000). Resolved
by correction: HOMELAB-2682 comment 67d2b879 (2026-11-05) records that Debian's postinst writes host
keys as root:root 0600, that uid 1000 cannot read them under readOnlyRootFilesystem: true, and that
sshd must run with -h at a key it generates in a writable path (plus PidFile / UsePAM=no / a high
port); verified on the ticket.

Blocker 3 (sbx-fleet README layer list stale). Resolved blocker 3 as an acknowledged follow-up:
the README layer-list doc fix is tracked on HOMELAB-2682 and deliberately left out of this
image-only PR, whose diff is one Dockerfile and nothing else.

Blocker 4 (openssh-client possibly transitive). Resolved blocker 4 with no action needed: the
explicit openssh-client install is kept deliberately alongside openssh-server so the client half
the spike needs is named in the layer rather than inherited, and the point is noted for the record.

Nothing in the diff changed after the round-2 approval: this head is still one file, +18/-0, pins and
ENTRYPOINT/CMD untouched.

## Verdict: APPROVED model: omniroute/deepseek-flash head: 19f18dcf532041e9876a4bafce7350da1d14be6f session: sess-20261105-1051z-h2682-pr839 The blocker raised in review 21846 is resolved on head 19f18dcf532041e9876a4bafce7350da1d14be6f. Blocker-resolution record for review 21846 (round 1, head `1cb3e16`), posted on the round-2 approved head `19f18dcf`. This restates that approval at the same head — round-2 (comment 21860) approved it and its delta verification stands — and adds only the finding-by-finding closure of the round-1 items that were never restated as resolved, so the landing record is complete. No new review round is claimed and nothing new was found. **Blocker 1 (smoke asserted sshd presence as root, not uid 1000).** Resolved in the delta: the build-time smoke now asserts `test -x /usr/sbin/sshd`, an absolute-path executability check that is PATH- and uid-independent; CI run #3118 executed it and the image built on this head. **Blocker 2 (host-key note overstated — baked keys are root 0600, unreadable by uid 1000).** Resolved by correction: HOMELAB-2682 comment 67d2b879 (2026-11-05) records that Debian's postinst writes host keys as root:root 0600, that uid 1000 cannot read them under `readOnlyRootFilesystem: true`, and that sshd must run with `-h` at a key it generates in a writable path (plus PidFile / UsePAM=no / a high port); verified on the ticket. **Blocker 3 (sbx-fleet README layer list stale).** Resolved blocker 3 as an acknowledged follow-up: the README layer-list doc fix is tracked on HOMELAB-2682 and deliberately left out of this image-only PR, whose diff is one Dockerfile and nothing else. **Blocker 4 (openssh-client possibly transitive).** Resolved blocker 4 with no action needed: the explicit `openssh-client` install is kept deliberately alongside `openssh-server` so the client half the spike needs is named in the layer rather than inherited, and the point is noted for the record. Nothing in the diff changed after the round-2 approval: this head is still one file, +18/-0, pins and `ENTRYPOINT`/`CMD` untouched.

pi-landing merged commit 6fa150a4a9 into live 2026-11-05 11:02:58 +00:00

pi-landing referenced this pull request from a commit 2026-11-05 11:02:59 +00:00

Merge pull request 'HOMELAB-2682: feat(sbx-fleet): openssh client+server for ssh-lib spike tests' (#839) from plane/HOMELAB-2682-ssh-image into live

aaron referenced this pull request from a commit 2026-11-05 11:13:13 +00:00

HOMELAB-2682: chore(sbx-gits): pin sandbox image to 6fa150a (openssh layer)

pi-landing referenced this pull request 2026-11-05 11:13:14 +00:00

HOMELAB-2682: chore(sbx-gits): pin sandbox image to 6fa150a (openssh layer) #842

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