sync-dev rendered deploy/secrets/dev.yaml into /etc/thermograph.env
unconditionally. That path is dev's env file — and it is also BETA's, on the
box beta is still running on until the cutover completes. With the dev checkout
present, the next push to dev would have overwritten the live env file of the
environment currently serving beta.thermograph.org: its containers would keep
running (env_file is read at container start) and then come up on the next
deploy pointed at dev's database password.
The earlier run only escaped this by failing first on the missing checkout.
Gate the render on the host's own secrets-env marker, which provision-dev.sh
flips to 'dev' only after beta has vacated. Until then the job syncs the
checkout and skips the render loudly rather than failing, so the ordering is
enforced by the host's own statement of what it is rather than by remembering
to do the steps in the right order.
The estate had zero alert rules. The only contact point was Grafana's factory
default pointing at the literal string <example@email.com>, and beta's
untracked compose override routed Grafana's SMTP at prod's Postfix — so
alerts, had any existed, would have been delivered by the box most likely to
be on fire. Prod served 86 5xx in 24h including five /healthz failures and
nobody was told.
Alerting (deploys to beta, which is where Grafana runs):
- 12 Loki-based rules. There is no Prometheus in this estate and Loki is the
only datasource, so every rule is log-derived.
- Thresholds come from a 24h backtest that happens to contain a real ~20min
prod outage at 04:20Z. Absolute counts, not ratios: prod runs ~7 req/min, so
one bad request is 1.4% and a ratio alert would scream all night. The 5xx
burst rule fires on the outage's 45 and 22 buckets and on nothing else in
the day; the largest benign bucket all day was 5.
- Routed to a new private #ops-alerts channel, not to any existing channel —
#weather-events, #announcements and #prod are product surfaces that notify
real subscribers.
- AlertingWatchdog is a dead-man's switch; its value is its absence.
- Delivery is proven, not assumed: the rules were provisioned into a throwaway
Grafana against beta's live Loki and a real alert arrived in Discord. This
matters because GET /api/v1/provisioning/contact-points returns [REDACTED]
for the URL — a contact point holding an uninterpolated env var looks
perfectly healthy and pages nobody. The only proof is a message arriving.
CI gains a structural check, because the existing one only proves YAML parses:
an alert rule whose condition names a missing refId is valid YAML, provisions
cleanly, and never fires. It also hard-fails on a literal Discord webhook in
the repo. Verified against all three breakages deliberately introduced.
Postfix supervision:
- The 13h outage was a boot-ordering race, not a Docker renumbering: postfix
started at 08:09:49, wg0 came up at :51, postfix fataled at :52 on a missing
docker_gwbridge address, and dockerd did not finish starting until 08:10:16.
Stock postfix@.service is ordered only After=network-online.target and ships
no Restart=, so one lost race became a permanent outage.
- An ExecStartPre gate now blocks up to 60s until every inet_interfaces
address actually exists, which absorbs the transient case inside a single
start attempt. That makes bounded retry correct: 5 attempts in 600s, then
failed — a genuinely broken config reaches a visible failed state in ~100s
instead of re-fataling every 15s forever.
- A 5-minute watchdog timer retries indefinitely and runs reset-failed, so
"failed" still self-heals. Worst case is ~5 minutes, not 13 hours.
- Wants=, not Requires=: a dockerd failure must not take down the loopback and
mesh listeners that do not depend on Docker at all.
Health checks must read config with `postconf -c`, never postmulti/postqueue/
postfix — those three RESOLVE inet_interfaces and so fatal precisely when an
address is missing, which made the first version of this check report
status=ok bound=0/0. A health check that fails open is worse than none.
DEPLOY.md carries the monitoring contract, including that systemctl is-active
postfix is a known-false signal: postfix.service is a wrapper whose
ExecStart=/bin/true, so it reports active forever while the real postfix@-
instance is failed with zero listeners. Reproduced live.
Known gap, documented not fixed: Alloy ships Docker stdout, Caddy files and
app JSONL, not journald — so no Postfix line reaches Loki and the mail rules
cannot fire until loki.source.journal is added.
Claude-Session: https://claude.ai/code/session_0182KTMrsTHJc3TcewCatJFY
main took two direct PRs (#19 shell-lint, #21 the thermograph-daemon Go
service) while dev accumulated the ERA5 lake stack; both sides added compose/
stack services and touched the same seams. Resolutions keep both worlds:
- compose + Swarm stack: lake AND daemon are sibling services; backend env
carries THERMOGRAPH_LAKE_URL and THERMOGRAPH_INTERNAL_TOKEN.
- deploy.sh: backend deploys roll (backend lake daemon); all adds frontend.
- requirements.txt: websockets/apscheduler stay removed (moved to the Go
daemon), duckdb stays (the lake role's engine).
Merged tree: backend suite green, both compose configs validate.
Adds .forgejo/workflows/shell-lint.yml (pinned shellcheck v0.11.0 + sha256, -x,
default severity, fail on any finding, not path-filtered) and drives all 26
scripts to zero findings.
Two defects shellcheck cannot see:
render-secrets.sh left DECRYPTED vault contents in /tmp whenever a sops decrypt
failed -- the caller's set -e aborted the function before either cleanup ran.
Now removed on every exit path, with `|| return 1` on both sops calls so a
decrypt failure can never write a partial /etc/thermograph.env regardless of the
caller's shell options. Explicitly not a `trap ... RETURN`: such a trap set in a
sourced function persists into the caller's shell and re-fires when the caller's
next `.`/source completes, where the function-local tmp is unset -- fatal and
silent under deploy.sh's set -u. The file now records that reasoning.
autoscale.sh ran `set -eu` without pipefail while piping docker stats into awk,
so a failed left side was swallowed and the loop autoscaled on empty input.
Promoted to pipefail with a missed sample treated as a skip; verified busybox ash
in docker:27-cli supports it.
Also: capture-fixtures.sh's `jq . || cat` ran cat after jq had consumed stdin,
silently writing truncated fixtures; deploy.sh/deploy-stack.sh `# shellcheck
source=` paths corrected for the monorepo layout.
Prod DB dumps and Forgejo (db + data volume) are now copied off-box to the
era5-thermograph S3 bucket, age-encrypted to the vault recipient so the host
age key at /etc/thermograph/age.key decrypts them for restore. Nothing plaintext
leaves the box; no local intermediate (streamed via age | rclone rcat).
ops-cron: the prod pg_dump job gains an off-box push; a new forgejo-backup job
dumps Forgejo's Postgres + tars its data volume on beta (the git host had NO
backup at all). 30-day off-box retention on both. S3 creds are Forgejo Actions
secrets (S3_ENDPOINT/BUCKET/ACCESS_KEY/SECRET_KEY), mirrored into the SOPS vault
(prod.yaml/beta.yaml) for host-side use. Contabo needs path-style addressing.
Adds deploy/backup/README.md with the DR restore runbook.
Backend runs its full hermetic suite, frontend its unit tier, inside the
just-built image -- the dev-only feature both app repos carried in their own
build.yml (deleted here in favor of the root workflow).
One root workflow set replaces the four repos' copies (deleted -- root-only
is where Forgejo reads them, and dead copies are a trap): per-domain
build-push with explicit image paths (emi/thermograph/backend|frontend; the
old github.repository-derived path collides in a monorepo), path-filtered
per-domain beta/prod/dev deploys, a domain-input reusable build check, a
single always-reporting PR gate (path-filtered required checks deadlock
auto-merge), a new infra-sync pipeline (host checkout + secrets render on
infra/** pushes), and ports of secrets-guard / ops-cron /
observability-validate to monorepo paths.
