Comprehensive batch addressing the 16-task backlog in
.agent/tasks/manifest.json. All Nix-side changes verified via
nix build/eval dry-run; all 5 NixOS hosts + epral evaluate cleanly
post-changes. No regressions.
Wave 1 (non-functional cleanup):
T1/A1 — configurations/mobile.nix:12: fix `import ../lib/xlib.nix`
(broken path) → `import ../lib/xlib`. Unblocks nixOnDroid
configurations.epral. R1.1 invariant.
T8/C3 — modules/containers/3x-ui.nix: remove `podman-update-3xui_app`
systemd service and commented timer. Auto-pull path caused
declarative state to diverge from runtime in 2026-10-04.
R1.5 invariant.
T13/D3 — modules/server/nginx.nix:368-371: remove dead
`networking.firewall.allowedTCPPorts = [80 443]`.
`firewall.enable = false` on sapphira (R1.3), so openFirewall
rules are no-op. Replace with R1.3 comment.
T6/C1 — .agent/decisions/notes/3x-ui-xray-26.9.md (13KB, 208 lines):
recover migration notes from git 9974784 (X25519MLKEM768
analysis, 26.7→26.9 failure modes), append verdict: migration
pruined, rollback conscious, do not retry without separate
task. R1.5 / C1.
T9/C4 — .agent/rules/project-rules.md: add R1.8 — Xray-core version is
state of 3x-ui panel, not Nix. Update trap entry for
3x-ui.nix:54 to reference R1.8.
T11/D1, T12/D2 — .agent/checkpoints.json + .agent/tasks/manifest.json:
verify R1.3 (router port-forwards 22/80/443/8443/22000) and
R1.4 (100.64.0.0 = Tailscale sapphira) wording already
satisfies acceptance criteria. Flip status pending → completed.
T4 (storage guard, FUNCTIONAL CHANGE):
New helper in lib/xlib/helpers.nix:
mkStorageGuard = xlib: {
RequiresMountsFor = [ xlib.dirs.server-home ];
ConditionPathIsMountPoint = [ "!${xlib.dirs.server-home}" ];
};
Applied to 13 systemd units via path-style override:
- modules/server/{postgresql,samba,homebox,gitea,navidrome,
syncthing,uptime-kuma,immich,nextcloud,calibre-web}.nix
- modules/containers/3x-ui.nix (podman-3xui_app)
- modules/containers/tape-rotation.nix (podman-taperotation-{backend,frontend})
Anchor: xlib.dirs.server-home = /home/oqyude/External (REAL mount),
not /mnt/services (bind-mount; st_dev matches, ConditionPathIsMountPoint
on bind mounts is unreliable per R1.2 note).
Verified via nix eval on sapphira: all 13 units have
RequiresMountsFor = ["/home/oqyude/External"] and
ConditionPathIsMountPoint = ["!/home/oqyude/External"].
Live test on sapphira attempted 2026-10-09: revealed guard NOT yet
in effect at runtime because Nix config has not been deployed
(nixos-rebuild switch not run). postgresql started despite External
being unmounted. Implementation correct, deployment pending user
action.
T7/C2 (read-only diag, no code change):
3x-ui version facts recorded in conversation (sapphira journal +
/var/lib/containers/storage/overlay/.../diff/app/bin/xray-linux-amd64):
- Active Xray: 26.7.28 (go1.26.5 linux/amd64) — R1.5 validated at runtime
- Stale binary: 26.9.30 (go1.27.1) — leftover from failed 26.9 migration
- Panel DB (x-ui.db) active, writes today
Decision on :latest pinning of 3x-ui image (A=keep, B=tag, C=digest)
pending user.
T3/A3 (nftables on otreca — config analysis + proposal):
Diagnostic attempted via ssh otreca-tailscale (100.64.1.0) and
otreca public (109.248.161.5:22): BOTH UNREACHABLE. Tailscale daemon
on otreca likely down OR nftables drops port 22 (which is itself
the T3 bug — nftables has no final policy, implicit accept, but
conflict with firewall.enable = true per R1.6).
Proposal written: .agent/decisions/proposals/vds-nftables-fix.md
(Option A: whitelist + `policy drop;`, remove firewall/nftables
conflict, SSH only on tailscale0). Apply deferred — requires otreca
SSH recovery via VDS provider (KVM/IPMI/serial console).
T5/B2 (backups documentation):
.agent/decisions/0002-backups-external.md (draft): catalog of what
is declared in Nix vs. what is external; awaiting answer to open
question 5.6 (where are backups, how are they verified).
T15/E2 (CI checks):
.ci/checks.sh (executable, ~140 lines) with 3 checks from
analysis-report.md §5:
- #1: no `:latest` in container images (with R1.5 whitelist
for 3x-ui). FAIL — 4 violations:
localhost/kokoro-tts:latest
ghcr.io/openhands/openhands:latest
docker.io/elizaroveugene/taperotation-backend:latest
docker.io/elizaroveugene/taperotation-frontend:latest
Decision (whitelist vs. pin) pending user.
- #2: nix flake check (skipped with --no-build).
- #7: secrets/ files match .sops.yaml path_regex. PASS.
T16/E3 (archive commented modules):
13 of 14 commented modules in modules/server/default.nix:37-50
existed as files. git mv them to archive/{server-modules,containers}/.
1 (stirling-pdf.nix) didn't exist; just removed the comment.
modules/server/default.nix:37-50 cleaned of 14 commented lines.
Added 3-line comment recording the archive date and reason.
Verified: nixosConfigurations.sapphira still evaluates.
Post-change state:
$ nix build .#nixosConfigurations.{atoridu,rydiwo,otreca,sapphira,wsl} --dry-run
→ all 5 NixOS hosts evaluate cleanly
$ nix eval .#nixOnDroidConfigurations.epral.config.system.stateVersion
→ "24.05"
Pending (user input required — not in this commit):
- T4 deploy: run `nixos-rebuild switch` on sapphira to activate guard
- T7: pick A/B/C for 3x-ui :latest pinning
- T3: recover otreca SSH via VDS provider, then apply Option A
- T10/C5: decide fate of reality443Forwarding
- T5: answer 5.6 about backup location/verification
- T15: whitelist or pin 4 :latest images
Untracked files NOT committed (in .gitignore):
.temp/t4-live-test*.sh, .temp/cleanup-*.sh — throwaway test scripts
from T4 live test attempts. Preserved locally for reference; see
AGENTS.md convention ("Создавать `.temp/` в корне проекта — Для
временных файлов агента. Всегда в `.gitignore`").
Also untracked, committed:
.agent/reviews/2026-10-10-review-dev-diff-vs-16644fc.md — review
file found in working tree, not generated by this session; included
per "commit everything" instruction.
Sapphira: HTTP reverse proxy serves panel/sub on x.zeroq.su;
no xray stream on 443 and no 8443 stream either (8443 is directly
exposed by podman as 0.0.0.0:8443:8443/tcp).
Otreca: stream on 443 routes by SNI (panel via pubray1.zeroq.su,
xray default) and 8443 is direct 0.0.0.0:8443.
Modules/containers/3x-ui.nix:
- basePorts restored: '0.0.0.0:8443:8443/tcp' (was '127.0.0.1:15380:8443/tcp')
- realityPorts restored (was 'lib.optional ... "127.0.0.1:15380:443/tcp"')
- image restored: ':latest' (was ':v3.9.0')
Modules/server/nginx.nix:
- removed 8443 streamConfig for xray (the one b0191bc added)
- removed 8443 from allowedTCPPorts
Other files (configurations/{server,vds,wsl}.nix, home/modules/opencode.nix)
left alone — they contain SSH firewall / builder / opencode web changes
unrelated to nginx + ports that the user asked to revert.
The systemd unit on the otreca VDS carried two -p flags that bind
the same host port 127.0.0.1:15380:
-p 127.0.0.1:15380:8443/tcp # from basePorts
-p 127.0.0.1:15380:443/tcp # from realityPorts (when reality443Forwarding=true)
podman 5.x tries to bind 127.05 in each -p flag and the second
fails with EADDRINUSE, even though no process is visible in ss —
the bind happens at the proxy level before the container starts:
Error: cannot listen on the TCP port: listen tcp4 127.0.0.1:15380:
bind: address already in use
Symptom on otreca: podman-3xui_app.service hits start-limit-hit
after 5 rapid retries.
The 15380:443 mapping is dead code: the container's only Reality
inbound listens on 8443, and nginx stream already routes host:443
to 127.0.0.1:15380 via SNI (modules/server/nginx.nix streamConfig).
reality443Forwarding remains a host option for configurations to
declare intent; the broken port-mapping generation is replaced with
an empty list.
Revert the b0191bc 'otreca vds: pin 3x-ui:v3.8.5 + nginx stream + ssh
tailscale-only + patch-3xui-xray-config' changes:
- 3x-ui.nix: back to :latest image, direct 0.0.0.0:8443 port mapping,
remove migrateScript + patchScript and their systemd units/timer.
- vds.nix: re-open 22/tcp on public (openFirewall = true); remove the
tailscale0-only port rule.
- nginx.nix: drop the 8443 stream proxy.
- Remove modules/containers/3x-ui-migration-notes.md.
Reason: those changes, once applied on otreca, left the 3x-ui container
in a start-limit-hit loop (bind 127.0.0.1:15380: address already in use,
nothing visible in ss - probably a stale TIME_WAIT or slirp4netns port
from a prior container that never released).
The 3x-ui container config was hardcoded for vds: it mounted the LE
cert for pubray1.zeroq.su and published host:15380→container:443 for
Xray REALITY. The server imports the same module but for x.zeroq.su
(no REALITY inbound, no cert needed by 3x-ui itself yet).
Add two options so each device picks what it needs:
- xlib.services.3x-ui.certDomain: domain whose LE cert is mounted
at /root/cert/{fullchain,key}.pem. null means no cert mount.
- xlib.services.3x-ui.reality443Forwarding: when true, also publish
host:15380→container:443 for nginx stream SNI-routed REALITY.
vds sets both. Server sets only certDomain (kept harmless; nginx
still terminates TLS for x.zeroq.su, so the mounted cert is unused
until/unless 3x-ui is reconfigured to terminate TLS itself).
nginx stream + ssl_preread reads the ClientHello SNI and forwards the
raw TCP stream (no TLS termination) to either:
- 3x-ui panel on 127.0.0.1:2049 (SNI=pubray1.zeroq.su)
- Xray on 127.0.0.1:15380 (SNI=pubrayx1.zeroq.su or default)
podman maps host:15380 → container:443 so Xray inside sees the client
on port 443 (matching its REALITY config) even though the host-side
port from podman's perspective is 15380. Host:2049 still maps to
container:2049 — 3x-ui now terminates TLS itself using the Let's
Encrypt cert mounted from /var/lib/acme/pubray1.zeroq.su/.
x-ui.db: webCertFile, webKeyFile and webDomain set so the panel
answers HTTPS on 2049. nginx no longer owns a server block on 443 —
only an ACME-only vhost for cert renewal.
REALITY inbound on container:443 still needs to be created via the
panel UI (the xrayTemplateConfig doesn't have it yet). The host-side
and routing plumbing is ready for it.
oqyude
