From d3800ac9dd763e9e53880df2c815a1546e02eab7 Mon Sep 17 00:00:00 2001
From: Nasim Sadat <sadat@digital-bridge.net>
Date: Sat, 24 Oct 2026 00:33:11 +0200
Subject: [PATCH] Petrolyst server infrastructure: Traefik, Trino and Superset

Traefik as the server-wide edge (TLS via Let's Encrypt, dashboard on
traefik.petrolyst.com behind oauth2-proxy and Keycloak). The
fuel-monitoring stack: Superset on atoma.petrolyst.com with Keycloak login
and Petrolyst branding, Trino reading the TimescaleDB fuel-db as catalog
"fuel". Customization lives in petrolyst-insights/, deployment in the other
folders.

Deploys run server-side (deploy/deploy.sh) from a Gitea workflow or
manually; releases are immutable, Superset metadata is backed up before
migrations, and deploy/rollback.sh restores it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 .gitea/workflows/deploy.yml                   |  57 ++++
 .gitignore                                    |  11 +
 README.md                                     | 305 ++++++++++++++++++
 deploy/deploy.sh                              | 163 ++++++++++
 deploy/lib.sh                                 | 271 ++++++++++++++++
 deploy/rollback.sh                            |  91 ++++++
 host/bootstrap.sh                             | 105 ++++++
 host/secrets-init.sh                          |  86 +++++
 keycloak/petrolyst-partial-import.json        |  56 ++++
 petrolyst-insights/README.md                  |  73 +++++
 .../assets/branding/favicon.ico               | Bin 0 -> 441 bytes
 .../assets/branding/favicon.svg               |   2 +
 .../assets/branding/petrolyst_icon_180.png    | Bin 0 -> 4691 bytes
 .../assets/branding/petrolyst_icon_192.png    | Bin 0 -> 5000 bytes
 ...yst_logo_standard_fullcolor_no_tagline.svg |  35 ++
 ...trolyst_logo_standard_white_no_tagline.svg |  17 +
 petrolyst-insights/dashboards/README.md       |  14 +
 petrolyst-insights/patches/README.md          |  16 +
 petrolyst-insights/petrolyst_security.py      |  92 ++++++
 petrolyst-insights/superset_config.py         | 252 +++++++++++++++
 stacks/fuel-monitoring/compose.yaml           | 174 ++++++++++
 .../fuel-monitoring/fuel-db/init/01-roles.sh  |  25 ++
 stacks/fuel-monitoring/superset/Dockerfile    |  28 ++
 stacks/fuel-monitoring/superset/init.sh       |  14 +
 .../trino/etc/access-control.properties       |   3 +
 .../trino/etc/catalog/fuel.properties         |   5 +
 .../trino/etc/config.properties               |  14 +
 stacks/fuel-monitoring/trino/etc/jvm.config   |  14 +
 .../fuel-monitoring/trino/etc/log.properties  |   1 +
 .../fuel-monitoring/trino/etc/node.properties |   3 +
 traefik/compose.yaml                          | 117 +++++++
 traefik/dynamic/middlewares.yml               |  10 +
 traefik/dynamic/tls.yml                       |   7 +
 traefik/static/traefik.yml                    |  56 ++++
 34 files changed, 2117 insertions(+)
 create mode 100644 .gitea/workflows/deploy.yml
 create mode 100644 .gitignore
 create mode 100644 README.md
 create mode 100755 deploy/deploy.sh
 create mode 100644 deploy/lib.sh
 create mode 100755 deploy/rollback.sh
 create mode 100755 host/bootstrap.sh
 create mode 100755 host/secrets-init.sh
 create mode 100644 keycloak/petrolyst-partial-import.json
 create mode 100644 petrolyst-insights/README.md
 create mode 100644 petrolyst-insights/assets/branding/favicon.ico
 create mode 100644 petrolyst-insights/assets/branding/favicon.svg
 create mode 100644 petrolyst-insights/assets/branding/petrolyst_icon_180.png
 create mode 100644 petrolyst-insights/assets/branding/petrolyst_icon_192.png
 create mode 100644 petrolyst-insights/assets/branding/petrolyst_logo_standard_fullcolor_no_tagline.svg
 create mode 100644 petrolyst-insights/assets/branding/petrolyst_logo_standard_white_no_tagline.svg
 create mode 100644 petrolyst-insights/dashboards/README.md
 create mode 100644 petrolyst-insights/patches/README.md
 create mode 100644 petrolyst-insights/petrolyst_security.py
 create mode 100644 petrolyst-insights/superset_config.py
 create mode 100644 stacks/fuel-monitoring/compose.yaml
 create mode 100755 stacks/fuel-monitoring/fuel-db/init/01-roles.sh
 create mode 100644 stacks/fuel-monitoring/superset/Dockerfile
 create mode 100755 stacks/fuel-monitoring/superset/init.sh
 create mode 100644 stacks/fuel-monitoring/trino/etc/access-control.properties
 create mode 100644 stacks/fuel-monitoring/trino/etc/catalog/fuel.properties
 create mode 100644 stacks/fuel-monitoring/trino/etc/config.properties
 create mode 100644 stacks/fuel-monitoring/trino/etc/jvm.config
 create mode 100644 stacks/fuel-monitoring/trino/etc/log.properties
 create mode 100644 stacks/fuel-monitoring/trino/etc/node.properties
 create mode 100644 traefik/compose.yaml
 create mode 100644 traefik/dynamic/middlewares.yml
 create mode 100644 traefik/dynamic/tls.yml
 create mode 100644 traefik/static/traefik.yml

diff --git a/.gitea/workflows/deploy.yml b/.gitea/workflows/deploy.yml
new file mode 100644
index 0000000..c2a8468
--- /dev/null
+++ b/.gitea/workflows/deploy.yml
@@ -0,0 +1,57 @@
+# Every push to main deploys everything: Traefik first, then each stack under
+# stacks/. The runner only uploads; the server validates, deploys and
+# smoke-tests (deploy/deploy.sh), so this job needs no Docker of its own.
+name: deploy
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+# Serializes CI runs; deploy.sh's host lock also covers manual rollbacks.
+concurrency:
+  group: deploy-petrolyst
+  cancel-in-progress: false
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    timeout-minutes: 45
+    env:
+      DEPLOY_HOST: ${{ secrets.DEPLOY_HOST }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Lint shell scripts
+        run: |
+          if ! command -v shellcheck >/dev/null; then
+            SUDO=$(command -v sudo || true)
+            $SUDO apt-get update -qq && $SUDO apt-get install -y -qq shellcheck
+          fi
+          shellcheck -x host/*.sh deploy/*.sh stacks/*/superset/init.sh stacks/*/fuel-db/init/*.sh
+
+      - name: Install the deploy key
+        env:
+          DEPLOY_SSH_KEY: ${{ secrets.DEPLOY_SSH_KEY }}
+          DEPLOY_KNOWN_HOSTS: ${{ secrets.DEPLOY_KNOWN_HOSTS }}
+        run: |
+          install -d -m 0700 "$HOME/.ssh"
+          printf '%s\n' "$DEPLOY_SSH_KEY" > "$HOME/.ssh/deploy_key"
+          chmod 0600 "$HOME/.ssh/deploy_key"
+          printf '%s\n' "$DEPLOY_KNOWN_HOSTS" > "$HOME/.ssh/known_hosts"
+          command -v rsync >/dev/null || { SUDO=$(command -v sudo || true); $SUDO apt-get install -y -qq rsync; }
+
+      - name: Upload and deploy
+        run: |
+          ssh_cmd="ssh -i $HOME/.ssh/deploy_key -o IdentitiesOnly=yes -o StrictHostKeyChecking=yes -o UserKnownHostsFile=$HOME/.ssh/known_hosts"
+          # A fresh directory per run; only deploy.sh, under the host lock,
+          # turns it into releases/<sha>. --omit-dir-times: the upload's age
+          # must be the server's, because retention prunes uploads by mtime.
+          incoming="/opt/petrolyst/incoming/${GITHUB_SHA}-${GITHUB_RUN_ID}-${GITHUB_RUN_ATTEMPT:-1}-$(date -u +%s)"
+          rsync -az --omit-dir-times --exclude .git -e "$ssh_cmd" ./ "deploy@${DEPLOY_HOST}:${incoming}/"
+          $ssh_cmd "deploy@${DEPLOY_HOST}" "${incoming}/deploy/deploy.sh" "$GITHUB_SHA" "$incoming"
+
+      - name: Check from outside
+        run: |
+          test "$(curl -fsS --max-time 20 https://atoma.petrolyst.com/health)" = OK
+          curl -fsS --max-time 20 -o /dev/null -w '%{http_code}\n' https://traefik.petrolyst.com/ | grep -qx 302
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..afd37f3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,11 @@
+# Secrets and server env files live only on the server (/opt/petrolyst/).
+*.env
+.env*
+secrets/
+# CI deploy key, generated here during first-time setup (README, Gitea step 3)
+petrolyst-ci
+petrolyst-ci.pub
+# Local test runs
+.scratch/
+.DS_Store
+__pycache__/
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..14d8d0b
--- /dev/null
+++ b/README.md
@@ -0,0 +1,305 @@
+# petrolyst-infra
+
+Everything that runs on the petrolyst server (109.199.127.84, Ubuntu 24.04), deployed on every
+push to `main`:
+
+- **Traefik** at the edge for every project on the server. Its dashboard is at
+  https://traefik.petrolyst.com, behind Keycloak.
+- **fuel-monitoring** (ATOMA): Superset at https://atoma.petrolyst.com, reading the operational
+  store `fuel-db` (Postgres 17 with TimescaleDB) through Trino. Sign-in goes through Keycloak
+  client `petrolyst`, and the UI carries the Petrolyst brand.
+
+Customization and deployment are separate, as with media-insights and media-intelligence-docker:
+
+| Folder | Holds |
+|---|---|
+| `petrolyst-insights/` | how Superset looks and behaves for Petrolyst: config, Keycloak login code, branding, patches, dashboards. See its README. |
+| `traefik/` | edge proxy, TLS, the `sso` middleware (oauth2-proxy) that guards the dashboard |
+| `stacks/fuel-monitoring/` | Compose stack, Superset Dockerfile, Trino config and catalog, fuel-db roles |
+| `deploy/` | `deploy.sh` (run by CI), `rollback.sh` (manual), `lib.sh` (shared) |
+| `host/` | one-time server setup: `bootstrap.sh`, `secrets-init.sh` |
+| `keycloak/` | the `petrolyst` client for Keycloak's partial import |
+| `.gitea/workflows/deploy.yml` | the pipeline |
+
+No credential is in this repository. Secrets exist only on the server, under
+`/opt/petrolyst/secrets/`; CI holds only the SSH deploy key.
+
+## How a deploy works
+
+1. A push to `main` (or a manual run) starts `.gitea/workflows/deploy.yml` on the act_runner. It
+   lints the scripts, rsyncs the checkout to a fresh `/opt/petrolyst/incoming/<sha>-<run>/`, and
+   calls `deploy/deploy.sh <sha> <that dir>` over SSH as user `deploy`.
+2. `deploy.sh` takes the host lock `/opt/petrolyst/deploy.lock`, which it shares with
+   `rollback.sh`, and keeps it until it exits.
+3. It finalizes the upload. A new commit is moved to `releases/<sha>`, and the release is made
+   read-only. A re-run of a deployed commit must match it byte for byte; a mismatch aborts.
+4. It resolves the artifacts and writes them to `releases/<sha>/ARTIFACTS`:
+   - `SUPERSET_IMAGE_TAG` is a hash of exactly the Superset image's build inputs. They include
+     `superset/init.sh`, so changing that file runs `superset-init` again.
+   - `TRINO_CONFIG_HASH` and `TRAEFIK_CONFIG_HASH` are hashes of the bind-mounted config.
+   - Compose recreates a container only when its value changes.
+5. Preflight, before anything live changes:
+   - every secret and env file exists;
+   - `petrolyst-insights/` holds no deployment files;
+   - `docker compose config` passes for every stack;
+   - the Superset image is built if it is new;
+   - the **downgrade guard** refuses an image older than the metadata database's schema.
+6. It promotes the release to `/opt/petrolyst/infra`, then starts Traefik, then each stack under
+   `stacks/`.
+7. For Superset, it reads the metadata database's state:
+   - An empty database is a fresh install: it runs `superset-init`.
+   - If the image changed, or the database is not at the image's migration head: it stops
+     `superset`, writes `backups/superset-meta_<old tag>_<revision>_<time>.dump`, then runs
+     `superset-init` (`db upgrade`, `init`, registers "Fuel (Trino)").
+   - If the image is unchanged and the schema is at its head, it does none of this.
+8. Smoke tests. A failure turns CI red and prints the stacks' state.
+   - `/health` answers through Traefik with a valid certificate.
+   - `/login/` leads to Keycloak with `client_id=petrolyst` and PKCE.
+   - The dashboard redirects to Keycloak.
+   - Trino reads `fuel`, and Superset reaches Trino.
+9. Retention:
+   - 5 releases;
+   - backups for 30 days;
+   - the 3 newest Superset images, plus any image that a kept release or backup names;
+   - uploads older than a day.
+
+The runner then checks both hosts from outside.
+
+## Server paths
+
+| Path | Owner | What |
+|---|---|---|
+| `/opt/petrolyst/infra` | deploy | live tree (the promoted release) |
+| `/opt/petrolyst/incoming/<sha>-<run>` | deploy | one CI upload; only `deploy.sh` turns it into a release |
+| `/opt/petrolyst/releases/<sha>` | deploy, read-only | finalized release plus `ARTIFACTS`; the last 5 are kept |
+| `/opt/petrolyst/secrets/{shared,traefik,fuel-monitoring}/` | root:deploy 0750, files 0444 | secrets, mounted as `/run/secrets/<name>` |
+| `/opt/petrolyst/env/fuel-monitoring.env` | root:deploy 0440 | `FUEL_DB_TRINO_PASSWORD` for Trino's `${ENV:…}` |
+| `/opt/petrolyst/backups/` | deploy 0750 | Superset metadata dumps |
+| `/opt/petrolyst/state/` | deploy | last deployed SHA and Superset image tag; `rollback-in-progress` during a migration rollback |
+
+## First-time setup
+
+### 1. Gitea
+
+1. Create the private repository `Petrolyst/petrolyst-infra` and push this repository's
+   `main` to it. Enable Actions under Settings → Repository → Units.
+2. Runner. Check Site/Org Administration → Actions → Runners. If none is registered, run
+   [Gitea Runner](https://docs.gitea.com/runner/installation/docker/) as the container
+   `docker.io/gitea/runner:5.2.2-dind` (privileged, with `/data` and `/var/lib/docker` volumes),
+   for example on the Gitea host (164.68.121.117):
+   - register it as an **organization runner** for `Petrolyst`: take the token from
+     Settings → Actions → Runners → Create new Runner;
+   - set `GITEA_RUNNER_LABELS=ubuntu-latest:docker://docker.gitea.com/runner-images:ubuntu-latest`;
+   - note its egress IPv4 (`curl -4 -s https://ifconfig.me`).
+3. Generate a deploy key on your Mac, used only for this:
+   `ssh-keygen -t ed25519 -N '' -C petrolyst-ci -f petrolyst-ci`
+4. Add repository secrets (Settings → Actions → Secrets):
+   - `DEPLOY_SSH_KEY`: contents of `petrolyst-ci` (the private key)
+   - `DEPLOY_HOST`: `109.199.127.84`
+   - `DEPLOY_KNOWN_HOSTS`: output of `ssh-keyscan -t ed25519 109.199.127.84`. Compare its
+     fingerprint (`ssh-keygen -lf <file>`) with `ssh-keygen -lf /etc/ssh/ssh_host_ed25519_key.pub`
+     run on the server.
+
+### 2. Keycloak (realm `thedigitalbridge` on iam.thedigitalbridge.io)
+
+1. Realm settings → Action → **Partial import**: choose `keycloak/petrolyst-partial-import.json`,
+   and "Skip" if a resource exists. This creates:
+   - the confidential client `petrolyst`: standard flow only, PKCE S256, redirect URIs for both
+     hosts;
+   - its client roles `superset-admin`, `superset-editor`, `superset-viewer` and `traefik-admin`;
+   - a mapper that puts those roles into the claim `petrolyst_roles`.
+2. Clients → petrolyst → Credentials: copy the client secret (step 3 stores it on the server).
+3. **MFA**, which Exhibit B requires. A copy of the built-in `browser` flow is not enough, for two
+   reasons: its Cookie step accepts an existing password-only session from another client of the
+   realm, and its conditional OTP subflow skips users who have not set up OTP. Instead:
+   - Authentication → Create flow `petrolyst-mfa` (basic flow).
+   - Add exactly two executions, both **Required**, in this order: `Username Password Form`,
+     then `OTP Form`. Add no Cookie, no Identity Provider Redirector and no conditional subflow.
+   - Clients → petrolyst → Advanced → Authentication flow overrides → Browser flow:
+     `petrolyst-mfa`.
+
+   Result: every sign-in to a Petrolyst app asks for password and OTP, and a user without OTP
+   enrols first. Other clients of the realm are unaffected. There is no silent SSO between
+   Superset and the dashboard.
+4. Give people roles: Users → (user) → Role mapping → Assign role → filter by clients →
+   `petrolyst`. Group mappings work too.
+5. Users of the Traefik dashboard need **Email verified** switched on, because oauth2-proxy
+   refuses unverified addresses.
+
+### 3. Server (as root, `ssh petrolyst`)
+
+The server needs only the two host scripts; it never gets Gitea credentials.
+
+```bash
+# on the Mac, in this repository
+scp host/bootstrap.sh host/secrets-init.sh petrolyst-ci.pub petrolyst:/root/
+ssh petrolyst
+# on the server, as root
+/root/bootstrap.sh --ci-key /root/petrolyst-ci.pub --runner-ip <runner egress IP>
+/root/secrets-init.sh                   # generates every secret; reports the missing Keycloak one
+/root/secrets-init.sh keycloak-secret   # paste the secret from Keycloak step 2
+```
+
+No runner yet? Pass `--runner-ip 127.0.0.1`. That installs the CI key but leaves it unusable from
+outside. Deploy manually until a runner exists (see "Manual deploy" below). When the runner is
+running, run `bootstrap.sh` again with its egress IP.
+
+`bootstrap.sh` does the following:
+- installs Docker from Docker's apt repository;
+- adds 4 GB swap;
+- turns on ufw for 22, 80 and 443 only;
+- turns off SSH password login and root password login;
+- creates the `deploy` user, whose key works only from the runner IP;
+- creates `/opt/petrolyst` and the Docker network `proxy`.
+
+**Before closing your root session**, check from a second terminal that `ssh petrolyst` still
+works.
+
+### 4. First deploy
+
+Run the workflow manually (Actions → deploy → Run workflow) or push to `main`. Without a runner,
+use "Manual deploy" below. The first run builds the Superset image and takes the fresh-install
+path. Let's Encrypt needs about a minute
+for the two certificates; the smoke tests wait up to two minutes.
+
+Then sign in at https://atoma.petrolyst.com with a user who has `superset-admin`. That person
+becomes the first Superset admin; there is no local admin account.
+
+## Operating
+
+| Task | How |
+|---|---|
+| Deploy | push to `main` (without a runner: "Manual deploy" below) |
+| Re-deploy a kept release | `sudo -u deploy /opt/petrolyst/infra/deploy/deploy.sh <sha>` |
+| Roll back | see below |
+| Traefik dashboard | https://traefik.petrolyst.com (role `traefik-admin`) |
+| Trino shell | `docker exec -it fuel-monitoring-trino-1 trino` |
+| fuel-db from the Mac | `ssh -L 5433:127.0.0.1:5433 petrolyst`, then connect to `localhost:5433`, database `fuel` |
+| Logs | `docker compose -p fuel-monitoring logs -f superset` (or `-p traefik`) |
+| Superset break-glass | `docker exec -it fuel-monitoring-superset-1 superset fab ...` |
+
+**Manual deploy** (no runner): commit first, so that `git status` is clean. Then run this on the
+Mac, in this repository:
+
+```bash
+sha=$(git rev-parse HEAD)
+dir=/opt/petrolyst/incoming/$sha-manual-$(date -u +%s)
+git archive --format=tar "$sha" |
+  ssh petrolyst "install -d -o deploy -g deploy -m 0755 $dir && tar -x --no-same-owner -C $dir && chown -R deploy:deploy $dir"
+ssh petrolyst "sudo -u deploy $dir/deploy/deploy.sh $sha $dir"
+```
+
+`git archive` sends exactly the commit, never uncommitted or ignored files such as the deploy
+key. The server then runs the same `deploy.sh` that CI runs, under the same lock. A later push
+queues a CI run that waits for a runner. Cancel stale waiting runs under Actions before you
+register one.
+
+**Rollback** (`deploy/rollback.sh`, manual, under the same lock as deploys):
+
+```bash
+ls /opt/petrolyst/releases                         # kept releases
+sudo -u deploy /opt/petrolyst/infra/deploy/rollback.sh <sha>
+```
+
+- If the target image's migration head equals the database's revision, this is a **code-only**
+  rollback: promote and restart.
+- Otherwise it is a **migration rollback**:
+  1. stop `superset`;
+  2. drop and recreate the `superset` metadata database;
+  3. restore the backup made for the target image, aborting on any error;
+  4. check the restored revision;
+  5. start the retained older image.
+
+  It refuses if that backup or image is gone. `fuel-db` is never touched.
+
+  Before step 1 it writes `state/rollback-in-progress`, and it removes that file only after the
+  smoke tests pass. While the file exists, `deploy.sh` refuses to run. If a rollback is
+  interrupted, run the same command again. It also restores when the failed attempt left the
+  database empty or had already dropped it.
+
+Afterwards, `git revert` the bad commit and push, so `main` matches. A plain revert without the
+rollback script is stopped by the downgrade guard.
+
+**Data loaders** (fuel-db). Every table in `public` must belong to `fuel_owner`. `trino_ro` can
+read new tables only through `fuel_owner`'s default privileges, and PostgreSQL applies those
+only to objects `fuel_owner` creates itself. A table that a loader creates as its own role stays
+unreadable for Trino. Create each loader role so that its sessions act as `fuel_owner`, and it
+cannot create anything as itself. Run this in
+`docker exec -it fuel-monitoring-fuel-db-1 psql -U postgres -d fuel`:
+
+```sql
+CREATE ROLE <loader> LOGIN PASSWORD '<password>';
+GRANT fuel_owner TO <loader> WITH INHERIT FALSE, SET TRUE;
+ALTER ROLE <loader> SET role TO 'fuel_owner';
+```
+
+Tables it creates, hypertables included, then belong to `fuel_owner`, and Trino can read them.
+After `SET ROLE NONE`, it cannot create anything in `public`. To repair a table that another
+role created, run `ALTER TABLE <t> OWNER TO fuel_owner`, then `GRANT SELECT ON <t> TO trino_ro`.
+
+**Adding a project**: create `stacks/<name>/compose.yaml`, attach the public service to the
+external network `proxy`, and set `traefik.*` labels with a unique router name and
+`tls.certresolver: le`. Add the DNS record first. `deploy.sh` picks the new folder up
+automatically.
+
+`sso@docker` works only for `traefik.petrolyst.com`. Its cookie, its allowed return hosts and its
+role (`traefik-admin`) are all tied to the dashboard. An app without a login of its own needs
+its own gate in its stack:
+- an oauth2-proxy service with its own cookie secret;
+- a router for the app host's `/oauth2/` path and a forwardAuth middleware pointing at that
+  service, as in `traefik/compose.yaml`;
+- `--redirect-url`, `--cookie-domain` and `--whitelist-domain` set to the app's host;
+- an `--allowed-role` with a new client role in Keycloak;
+- the app's `/oauth2/callback` added to the `petrolyst` client's redirect URIs.
+
+## Verified locally (2026-10-23)
+
+An end-to-end run ran the real `deploy.sh` and `rollback.sh` in a Linux container against
+Docker Desktop, with a scratch `/opt/petrolyst`. Production differences in that run:
+- a test CA certificate stood in for Let's Encrypt;
+- the ACME server in the test copy was unreachable on purpose;
+- a dummy Keycloak client secret was used.
+
+Results:
+- The fresh install took the init path.
+- An identical re-run recreated nothing and left `ARTIFACTS` byte-identical.
+- A Trino-only change recreated only `trino`.
+- A Superset change stopped, backed up, migrated and recreated only `superset`.
+- A change to `superset/init.sh` alone did the same, and the changed script ran.
+- A same-SHA upload with different content was refused.
+- An older image against a newer schema was refused before promotion.
+- A migration rollback dropped a table added by a "newer migration" and restored the revision.
+- A code-only rollback brought back the previous image.
+- A re-deploy of an unchanged image, against a schema one migration behind its head, migrated
+  the schema back to the head.
+- A migration rollback whose restore failed after the drop left `rollback-in-progress` and an
+  empty database. `deploy.sh` then refused to run. Running the rollback again restored the
+  database and removed the file. It did the same after a simulated stop between dropping and
+  recreating the database. Without the file, a missing database stops the rollback with an error.
+- The host lock blocked a concurrent run.
+- Retention pruned read-only releases.
+- Retention removed a queued upload that a plain `rsync -a` had given an old checkout's
+  directory times. It kept one uploaded with `--omit-dir-times`.
+- In `fuel-db`, a loader that created a table as its own role left it unreadable for `trino_ro`.
+  With the "Data loaders" recipe, tables (hypertables too) belonged to `fuel_owner` and Trino
+  could read them. After `SET ROLE NONE`, the loader could not create anything.
+- Smoke tests passed, including the redirects to the real Keycloak with `client_id=petrolyst`
+  and PKCE S256.
+- TLS 1.1 and unknown SNI were refused, and HTTP redirected to HTTPS.
+- Trino and `trino_ro` both refused writes.
+
+Not verified locally:
+- Let's Encrypt issuance;
+- a real Keycloak sign-in, OTP and logout (they need the client from setup step 2);
+- the theme as rendered in a browser;
+- the Gitea runner.
+
+## Open items
+
+- Exhibit B: encryption at rest; confirm the VPS is in a German data centre.
+- Nightly `pg_dump` of both databases with an offsite copy. Today only the pre-migration
+  Superset dumps exist.
+- Certificate expiry monitoring. There is no ACME e-mail, so nothing warns if renewal fails
+  between deploys.
+- Celery worker and beat, if Superset alerts or reports are needed.
+- A Petrolyst login theme for Keycloak itself, which lives on the Keycloak host.
diff --git a/deploy/deploy.sh b/deploy/deploy.sh
new file mode 100755
index 0000000..2a9fb87
--- /dev/null
+++ b/deploy/deploy.sh
@@ -0,0 +1,163 @@
+#!/usr/bin/env bash
+# Server-side deploy, run as the non-root deploy user:
+#   deploy.sh <sha> <incoming-dir>   CI: finalize the upload as releases/<sha>, then deploy it
+#   deploy.sh <sha>                  re-deploy a release that is already finalized
+#
+# Order: lock, finalize, artifacts, preflight, image build and downgrade guard
+# (nothing live touched yet), then promote, Traefik, each stack, smoke tests,
+# retention. Rollback is a separate, manual script (rollback.sh) under the same
+# lock.
+set -euo pipefail
+# shellcheck source=deploy/lib.sh
+. "$(dirname "$(readlink -f "$0")")/lib.sh"
+
+# finalize_release <sha> <upload>: CI never writes into releases/. A new SHA is
+# moved in atomically; a re-run of a deployed SHA must match it byte for byte
+# and leaves the finalized release, ARTIFACTS included, untouched.
+finalize_release() {
+  local release=$RELEASES/$1 upload
+  upload=$(readlink -f "$2") || die "upload $2 does not exist"
+  [[ $upload == "$(readlink -f "$INCOMING")"/* && -d $upload ]] || die "upload $2 is not a directory under $INCOMING"
+  if [ ! -e "$release" ]; then
+    mv "$upload" "$release"
+    log "finalized $release"
+  elif diff -r --exclude=ARTIFACTS "$upload" "$release" >/dev/null; then
+    rm -rf "$upload"
+    log "release $1 already finalized and identical to the upload; reusing it"
+  else
+    die "upload differs from the finalized release $release; one SHA cannot have two contents"
+  fi
+}
+
+# resolve_artifacts <release>: compute the artifact identities from the
+# release's own files, record them once in ARTIFACTS, then freeze the release.
+resolve_artifacts() {
+  local release=$1 computed
+  computed=$(compute_artifacts "$release")
+  if [ -e "$release/ARTIFACTS" ]; then
+    [ "$(cat "$release/ARTIFACTS")" = "$computed" ] || die "$release/ARTIFACTS does not match the release's files"
+  else
+    # A crash between the move and this step leaves no ARTIFACTS; the files
+    # are unchanged, so the computed values are the same.
+    chmod u+w "$release"
+    printf '%s\n' "$computed" >"$release/ARTIFACTS"
+  fi
+  chmod -R a-w "$release"
+  load_artifacts "$release"
+  log "artifacts: superset $SUPERSET_IMAGE_TAG, trino config $TRINO_CONFIG_HASH, traefik config $TRAEFIK_CONFIG_HASH"
+}
+
+# prepare_fuel_monitoring <release>: before anything live changes, build the
+# Superset image from the release and refuse an image older than the schema of
+# a running metadata database.
+prepare_fuel_monitoring() {
+  local image=fuel-superset:$SUPERSET_IMAGE_TAG revision
+  if ! "${DOCKER[@]}" image inspect "$image" >/dev/null 2>&1; then
+    log "building $image"
+    compose "$1" stacks/fuel-monitoring build superset
+  fi
+  [ -e "$LIVE/stacks/fuel-monitoring/compose.yaml" ] || return 0
+  [ -n "$(fm ps --status running -q superset-db 2>/dev/null)" ] || return 0
+  revision=$(metadata_revision)
+  [ "$revision" = fresh ] || downgrade_guard "$image" "$revision"
+}
+
+downgrade_guard() {
+  alembic "$1" has "$2" ||
+    die "the metadata database is at revision $2, which $1 does not know: the image is older than the schema. Use deploy/rollback.sh."
+}
+
+deploy_fuel_monitoring() {
+  local image=fuel-superset:$SUPERSET_IMAGE_TAG revision running head
+  fm up -d --wait superset-db redis
+  revision=$(metadata_revision)
+  if [ "$revision" = fresh ]; then
+    log "metadata database is empty: fresh install, running superset-init"
+    fm run --rm superset-init
+  else
+    # Again here: the database may not have been running during preparation.
+    downgrade_guard "$image" "$revision"
+    running=$(running_superset_tag)
+    # An unchanged tag alone is not enough: the schema may have been changed
+    # under the container (a restore, a manual downgrade).
+    head=$(alembic "$image" heads)
+    if [ "$running" != "$SUPERSET_IMAGE_TAG" ] || [ "$revision" != "$head" ]; then
+      log "Superset image ${running:-unknown} -> $SUPERSET_IMAGE_TAG, schema $revision -> $head: stop, back up, migrate"
+      fm stop superset
+      backup_metadata "${running:-unknown}" "$revision"
+      fm run --rm superset-init
+    fi
+  fi
+  fm up -d --wait --remove-orphans
+}
+
+# Old releases, stale uploads, old backups and unreferenced Superset images.
+retention() {
+  local current=$1 dir tag referenced
+  while IFS= read -r dir; do
+    [ "${dir##*/}" != "$current" ] || continue
+    chmod -R u+w "$dir"
+    rm -rf "$dir"
+    log "removed release ${dir##*/}"
+  done < <(find "$RELEASES" -mindepth 1 -maxdepth 1 -type d -printf '%T@ %p\n' | sort -rn | tail -n +6 | cut -d' ' -f2-)
+  # Uploads older than a day were never finalized (interrupted CI runs). Their
+  # mtime is the server's (the workflow's rsync omits directory times), and a
+  # CI job lives at most 45 minutes, so an upload being sent or waiting for the
+  # lock is never this old.
+  while IFS= read -r -d '' dir; do
+    chmod -R u+w "$dir"
+    rm -rf "$dir"
+    log "removed stale upload ${dir##*/}"
+  done < <(find "$INCOMING" -mindepth 1 -maxdepth 1 -mmin +1440 -print0)
+  find "$BACKUPS" -maxdepth 1 -name 'superset-meta_*.dump' -mtime +30 -delete
+  find "$BACKUPS" -maxdepth 1 -name '.partial-*' -mmin +60 -delete
+  # Keep the 3 newest images plus every image a kept release or backup names.
+  referenced=$(
+    sed -n 's/^SUPERSET_IMAGE_TAG=//p' "$RELEASES"/*/ARTIFACTS 2>/dev/null || true
+    find "$BACKUPS" -maxdepth 1 -name 'superset-meta_*.dump' -exec basename {} \; |
+      sed -n 's/^superset-meta_\([0-9a-f]\{16\}\)_.*/\1/p'
+  )
+  "${DOCKER[@]}" image ls fuel-superset --format '{{.Tag}}' | tail -n +4 | while IFS= read -r tag; do
+    grep -qxF "$tag" <<<"$referenced" && continue
+    if "${DOCKER[@]}" image rm "fuel-superset:$tag" >/dev/null; then
+      log "removed image fuel-superset:$tag"
+    else
+      log "kept image fuel-superset:$tag (still in use)"
+    fi
+  done
+}
+
+main() {
+  local sha=${1:-} upload=${2:-} release dir
+  [[ $sha =~ ^[0-9a-f]{40}$ ]] || die "usage: deploy.sh <40-hex sha> [incoming-dir]"
+  acquire_lock 900
+  [ ! -e "$ROLLBACK_MARK" ] ||
+    die "a rollback to $(cat "$ROLLBACK_MARK") did not finish and may have left the metadata database half-restored; run deploy/rollback.sh again first"
+  release=$RELEASES/$sha
+  [ -z "$upload" ] || finalize_release "$sha" "$upload"
+  [ -d "$release" ] || die "no release $release"
+  resolve_artifacts "$release"
+  preflight "$release"
+  prepare_fuel_monitoring "$release"
+
+  # From here on the live state changes; on failure, print the stacks' state.
+  trap on_exit EXIT
+  promote "$release" "$sha"
+  ensure_proxy_network
+  log "traefik"
+  compose "$LIVE" traefik up -d --wait --remove-orphans
+  while IFS= read -r dir; do
+    log "$dir"
+    case $dir in
+      stacks/fuel-monitoring) deploy_fuel_monitoring ;;
+      *) compose "$LIVE" "$dir" up -d --wait --remove-orphans ;;
+    esac
+  done < <(stack_dirs "$LIVE")
+  smoke_tests
+  record_state "$sha"
+  trap - EXIT
+  retention "$sha"
+  log "deployed $sha"
+}
+
+main "$@"
diff --git a/deploy/lib.sh b/deploy/lib.sh
new file mode 100644
index 0000000..f0cc28e
--- /dev/null
+++ b/deploy/lib.sh
@@ -0,0 +1,271 @@
+# shellcheck shell=bash
+# Shared by deploy.sh and rollback.sh; sourced, not executed.
+
+# Server layout (README "Server paths"). PETROLYST_ROOT exists only so the
+# scripts can be exercised against a scratch directory; production never sets it.
+# shellcheck disable=SC2034 # RELEASES and INCOMING are used by the sourcing scripts
+ROOT=${PETROLYST_ROOT:-/opt/petrolyst}
+LIVE=$ROOT/infra
+RELEASES=$ROOT/releases
+INCOMING=$ROOT/incoming
+BACKUPS=$ROOT/backups
+STATE=$ROOT/state
+LOCK_FILE=$ROOT/deploy.lock
+# Exists while rollback.sh replaces the metadata database, and stays behind if
+# it is interrupted there; deploy.sh refuses to run until a rollback completes.
+ROLLBACK_MARK=$STATE/rollback-in-progress
+
+ATOMA_HOST=${ATOMA_HOST:-atoma.petrolyst.com}
+TRAEFIK_HOST=${TRAEFIK_HOST:-traefik.petrolyst.com}
+KEYCLOAK_REALM_URL=${KEYCLOAK_REALM_URL:-https://iam.thedigitalbridge.io/realms/thedigitalbridge}
+PETROLYST_ROOT=$ROOT
+export ATOMA_HOST TRAEFIK_HOST KEYCLOAK_REALM_URL PETROLYST_ROOT
+
+# --host pins the daemon, as in petrolyst-ui/deploy/deploy.sh: a stale
+# `docker context use` must not send this deploy to another daemon.
+DOCKER=(docker --host unix:///var/run/docker.sock)
+
+# Build inputs of the Superset image, relative to a release. Everything the
+# Dockerfile copies is listed; nothing else is, so the tag changes exactly when
+# the image would.
+SUPERSET_INPUTS=(
+  stacks/fuel-monitoring/superset/Dockerfile
+  stacks/fuel-monitoring/superset/init.sh
+  petrolyst-insights/superset_config.py
+  petrolyst-insights/petrolyst_security.py
+  petrolyst-insights/assets/branding
+  petrolyst-insights/patches
+)
+
+# Every file the stacks need from /opt/petrolyst (host/secrets-init.sh).
+REQUIRED_FILES=(
+  secrets/shared/keycloak_petrolyst_client_secret
+  secrets/traefik/oauth2_proxy_cookie_secret
+  secrets/fuel-monitoring/superset_secret_key
+  secrets/fuel-monitoring/superset_db_password
+  secrets/fuel-monitoring/fuel_db_password
+  secrets/fuel-monitoring/fuel_db_trino_password
+  env/fuel-monitoring.env
+)
+
+log() { printf '%s %s\n' "$(date -u +%H:%M:%S)" "$*" >&2; }
+die() { log "ERROR: $*"; exit 1; }
+
+[ "$(id -u)" != 0 ] || die "run as the deploy user (sudo -u deploy $0 ...), not as root"
+
+# acquire_lock <seconds>: deploy.sh and rollback.sh share this lock, so a CI
+# deploy and a manual rollback never run at the same time. Held until exit.
+acquire_lock() {
+  exec 9>>"$LOCK_FILE"
+  flock -w "$1" 9 || die "another deploy or rollback holds $LOCK_FILE (waited $1 s)"
+}
+
+sha256() {
+  if command -v sha256sum >/dev/null; then sha256sum; else shasum -a 256; fi | cut -c1-64
+}
+
+# hash_inputs <dir> <path>...: one short digest over the names and contents of
+# every file under the paths, independent of mtimes and listing order.
+hash_inputs() {
+  local dir=$1
+  shift
+  (
+    cd "$dir" || exit 1
+    find "$@" -type f -print0 | LC_ALL=C sort -z |
+      while IFS= read -r -d '' f; do printf '%s %s\n' "$f" "$(sha256 <"$f")"; done
+  ) | sha256 | cut -c1-16
+}
+
+compute_artifacts() {
+  printf 'SUPERSET_IMAGE_TAG=%s\n' "$(hash_inputs "$1" "${SUPERSET_INPUTS[@]}")"
+  printf 'TRINO_CONFIG_HASH=%s\n' "$(hash_inputs "$1" stacks/fuel-monitoring/trino/etc)"
+  # Only the static config: dynamic/ is watched and applies without a restart.
+  printf 'TRAEFIK_CONFIG_HASH=%s\n' "$(hash_inputs "$1" traefik/static)"
+}
+
+# load_artifacts <release>: export the release's recorded artifact identities.
+load_artifacts() {
+  local file=$1/ARTIFACTS line key value
+  [ -s "$file" ] || die "$file is missing"
+  unset SUPERSET_IMAGE_TAG TRINO_CONFIG_HASH TRAEFIK_CONFIG_HASH
+  while IFS= read -r line; do
+    key=${line%%=*}
+    value=${line#*=}
+    [[ $key =~ ^(SUPERSET_IMAGE_TAG|TRINO_CONFIG_HASH|TRAEFIK_CONFIG_HASH)$ && $value =~ ^[0-9a-f]{16}$ ]] ||
+      die "unexpected line in $file: $line"
+    printf -v "$key" '%s' "$value"
+    export "${key?}"
+  done <"$file"
+  [ -n "${SUPERSET_IMAGE_TAG:-}" ] && [ -n "${TRINO_CONFIG_HASH:-}" ] && [ -n "${TRAEFIK_CONFIG_HASH:-}" ] ||
+    die "$file is incomplete"
+}
+
+# compose <tree> <dir> <args...>: run Compose for the stack in <tree>/<dir>.
+compose() {
+  local tree=$1 dir=$2
+  shift 2
+  "${DOCKER[@]}" compose --project-directory "$tree/$dir" -f "$tree/$dir/compose.yaml" "$@"
+}
+
+fm() { compose "$LIVE" stacks/fuel-monitoring "$@"; }
+
+stack_dirs() {
+  local f
+  for f in "$1"/stacks/*/compose.yaml; do
+    [ -e "$f" ] || continue
+    f=${f#"$1"/}
+    printf '%s\n' "${f%/compose.yaml}"
+  done
+}
+
+preflight() {
+  local release=$1 f bad dir
+  for f in "${REQUIRED_FILES[@]}"; do
+    [ -s "$ROOT/$f" ] || die "missing or empty: $ROOT/$f (run host/secrets-init.sh as root)"
+  done
+  # oauth2-proxy uses the client secret file byte for byte.
+  f=$ROOT/secrets/shared/keycloak_petrolyst_client_secret
+  [ "$(tail -c1 "$f" | wc -l)" -eq 0 ] ||
+    die "$f ends with a newline; store it again with: host/secrets-init.sh keycloak-secret"
+  bad=$(find "$release/petrolyst-insights" \( -name 'Dockerfile*' -o -name '*compose*.y*ml' \
+    -o -name '*.env' -o -name '.env' -o -path '*/.gitea/*' -o -path '*/.github/*' \) -print)
+  [ -z "$bad" ] || die "petrolyst-insights/ holds customization only; found: $bad"
+  compose "$release" traefik config -q
+  while IFS= read -r dir; do compose "$release" "$dir" config -q; done < <(stack_dirs "$release")
+}
+
+# promote <release> <sha>: make the release the live tree. --chmod applies to
+# the destination only: the live tree stays writable, the release read-only.
+promote() {
+  mkdir -p "$LIVE"
+  rsync -a --delete --chmod=Du+w,Fu+w "$1/" "$LIVE/"
+  printf '%s\n' "$2" >"$LIVE/REVISION"
+}
+
+ensure_proxy_network() {
+  "${DOCKER[@]}" network inspect proxy >/dev/null 2>&1 || "${DOCKER[@]}" network create proxy >/dev/null
+}
+
+# metadata_revision: the metadata database's Alembic revision, "fresh" if it
+# has no alembic_version table yet; any other error (connection, auth) aborts.
+metadata_revision() {
+  local out
+  if out=$(fm exec -T superset-db psql -U superset -d superset -tAc 'SELECT version_num FROM alembic_version' 2>&1); then
+    [[ $out =~ ^[0-9a-z_]+$ ]] || die "unexpected alembic_version content: $out"
+    printf '%s\n' "$out"
+  elif [[ $out == *'relation "alembic_version" does not exist'* ]]; then
+    printf 'fresh\n'
+  else
+    die "cannot read the metadata database's revision: $out"
+  fi
+}
+
+# alembic <image> heads | has <rev>: read Superset's migration graph from the
+# image without starting the app (loading the scripts through Alembic would
+# import Superset's models, which need an initialised app).
+alembic() {
+  "${DOCKER[@]}" run --rm -i --network none --entrypoint python "$1" - "${@:2}" <<'PY'
+import ast, pathlib, sys
+
+revs, downs = set(), set()
+for path in pathlib.Path("/app/superset/migrations/versions").glob("*.py"):
+    for node in ast.parse(path.read_text()).body:
+        if isinstance(node, ast.Assign) and len(node.targets) == 1:
+            target, value = node.targets[0], node.value
+        elif isinstance(node, ast.AnnAssign) and node.value is not None:
+            target, value = node.target, node.value
+        else:
+            continue
+        if isinstance(target, ast.Name) and target.id in ("revision", "down_revision"):
+            found = ast.literal_eval(value)
+            found = found if isinstance(found, (tuple, list)) else (found,)
+            (revs if target.id == "revision" else downs).update(v for v in found if v)
+if sys.argv[1] == "heads":
+    print(" ".join(sorted(revs - downs)))
+else:
+    sys.exit(0 if sys.argv[2] in revs else 3)
+PY
+}
+
+# The image tag of the existing superset container, or of the last successful
+# deploy if the container is gone; empty if neither is known.
+running_superset_tag() {
+  local id ref
+  id=$(fm ps -a -q superset 2>/dev/null | head -n1)
+  if [ -n "$id" ]; then
+    ref=$("${DOCKER[@]}" inspect --format '{{.Config.Image}}' "$id")
+    printf '%s\n' "${ref#fuel-superset:}"
+  elif [ -s "$STATE/superset-image-tag" ]; then
+    cat "$STATE/superset-image-tag"
+  fi
+}
+
+# backup_metadata <image-tag> <revision>: dump the metadata database under a
+# name that rollback.sh can match to the image whose schema it holds.
+backup_metadata() {
+  local name tmp
+  name=superset-meta_${1}_${2}_$(date -u +%Y%m%dT%H%M%SZ).dump
+  tmp=$(mktemp "$BACKUPS/.partial-XXXXXX")
+  fm exec -T superset-db pg_dump -U superset -d superset -Fc >"$tmp"
+  [ -s "$tmp" ] || die "metadata backup came out empty"
+  mv "$tmp" "$BACKUPS/$name"
+  log "metadata backup: $BACKUPS/$name"
+}
+
+record_state() {
+  mkdir -p "$STATE"
+  printf '%s\n' "$SUPERSET_IMAGE_TAG" >"$STATE/superset-image-tag"
+  printf '%s\n' "$1" >"$STATE/deployed-sha"
+}
+
+# Status code and resolved redirect target of one request through the local
+# Traefik, with certificate verification against the real hostname.
+probe() {
+  local host=$1 path=$2
+  curl -q --noproxy '*' -sS -o /dev/null --max-time 20 --resolve "$host:443:127.0.0.1" \
+    -w '%{http_code} %{redirect_url}\n' "https://$host$path"
+}
+
+smoke_tests() {
+  local i body code location
+  log "smoke tests"
+  # First deploy: Let's Encrypt may need a minute to issue the certificate.
+  for i in $(seq 1 24); do
+    body=$(curl -q --noproxy '*' -fsS --max-time 10 --resolve "$ATOMA_HOST:443:127.0.0.1" \
+      "https://$ATOMA_HOST/health" 2>/dev/null) && [ "$body" = OK ] && break
+    [ "$i" -lt 24 ] || die "https://$ATOMA_HOST/health did not answer OK with a valid certificate"
+    sleep 5
+  done
+
+  read -r code location < <(probe "$ATOMA_HOST" /login/)
+  [ "$code" = 302 ] && [[ $location == "https://$ATOMA_HOST/login/keycloak"* ]] ||
+    die "/login/ should redirect to /login/keycloak, got $code $location"
+
+  read -r code location < <(probe "$ATOMA_HOST" /login/keycloak)
+  [ "$code" = 302 ] && [[ $location == "$KEYCLOAK_REALM_URL/protocol/openid-connect/auth?"* ]] &&
+    [[ $location == *client_id=petrolyst* && $location == *code_challenge_method=S256* ]] ||
+    die "/login/keycloak should redirect to Keycloak with client_id=petrolyst and PKCE S256, got $code $location"
+
+  read -r code location < <(probe "$TRAEFIK_HOST" /)
+  [ "$code" = 302 ] && [[ $location == "$KEYCLOAK_REALM_URL/"* || $location == *"/oauth2/start"* ]] ||
+    die "https://$TRAEFIK_HOST/ should redirect to Keycloak, got $code $location"
+
+  fm exec -T trino trino --execute 'SELECT count(*) FROM fuel.information_schema.schemata' >/dev/null ||
+    die "Trino cannot read the fuel catalog"
+  fm exec -T superset curl -fsS --max-time 10 http://trino:8080/v1/info >/dev/null ||
+    die "Superset cannot reach Trino"
+  log "smoke tests passed"
+}
+
+# EXIT trap for the part of a run that changes live state.
+on_exit() {
+  local status=$?
+  [ "$status" = 0 ] || diagnostics
+}
+
+diagnostics() {
+  log "state of the stacks:"
+  compose "$LIVE" traefik ps -a >&2 || true
+  fm ps -a >&2 || true
+  fm logs --no-color --tail=100 >&2 || true
+}
diff --git a/deploy/rollback.sh b/deploy/rollback.sh
new file mode 100755
index 0000000..eb1e7b3
--- /dev/null
+++ b/deploy/rollback.sh
@@ -0,0 +1,91 @@
+#!/usr/bin/env bash
+# Manual rollback to a kept release, run on the server as the deploy user:
+#   sudo -u deploy /opt/petrolyst/infra/deploy/rollback.sh <sha>
+#
+# Code-only when the target image's Alembic head equals the metadata
+# database's revision. Otherwise a migration rollback: the metadata database is
+# dropped, recreated and restored from the backup taken for the target image,
+# and the restored revision is checked before anything starts. Until the
+# rollback completes, state/rollback-in-progress blocks deploy.sh; an
+# interrupted rollback is finished by running it again. Afterwards,
+# `git revert` and push so main matches; deploy.sh's downgrade guard stops a
+# plain revert from running against a newer schema.
+set -euo pipefail
+# shellcheck source=deploy/lib.sh
+. "$(dirname "$(readlink -f "$0")")/lib.sh"
+
+# Destructive steps below are hard-wired to service superset-db and database
+# superset; nothing here can be pointed at fuel-db.
+restore_metadata() {
+  local backup=$1 head=$2 restored
+  log "migration rollback: restoring $backup"
+  fm stop superset
+  fm exec -T superset-db psql -U superset -d postgres -v ON_ERROR_STOP=1 \
+    -c 'DROP DATABASE IF EXISTS superset WITH (FORCE)' \
+    -c 'CREATE DATABASE superset OWNER superset'
+  fm exec -T superset-db pg_restore -U superset -d superset --exit-on-error --single-transaction <"$backup"
+  restored=$(metadata_revision)
+  [ "$restored" = "$head" ] ||
+    die "restored revision $restored is not the target head $head; superset stays stopped"
+}
+
+# metadata_db_exists: whether database superset exists, asked through the
+# maintenance database; a connection or authentication error aborts.
+metadata_db_exists() {
+  local n
+  n=$(fm exec -T superset-db psql -U superset -d postgres -tAc "SELECT count(*) FROM pg_database WHERE datname = 'superset'") ||
+    die "cannot reach the metadata database server"
+  [[ $n =~ ^[01]$ ]] || die "unexpected answer from pg_database: $n"
+  [ "$n" = 1 ]
+}
+
+main() {
+  local sha=${1:-} release image revision head backup dir
+  [[ $sha =~ ^[0-9a-f]{40}$ ]] || die "usage: rollback.sh <40-hex sha of a kept release>"
+  acquire_lock 600
+  release=$RELEASES/$sha
+  [ -s "$release/ARTIFACTS" ] || die "no finalized release with ARTIFACTS at $release"
+  # The release's recorded identities, never recomputed.
+  load_artifacts "$release"
+  image=fuel-superset:$SUPERSET_IMAGE_TAG
+  "${DOCKER[@]}" image inspect "$image" >/dev/null 2>&1 || die "image $image is no longer on this host"
+  preflight "$release"
+
+  trap on_exit EXIT
+  fm up -d --wait superset-db redis
+  if [ -e "$ROLLBACK_MARK" ] && ! metadata_db_exists; then
+    # An earlier attempt stopped between DROP and CREATE.
+    revision=fresh
+  else
+    revision=$(metadata_revision)
+  fi
+  # Empty or missing is expected only after an interrupted restore, which left the mark.
+  [ "$revision" != fresh ] || [ -e "$ROLLBACK_MARK" ] || die "the metadata database is empty; there is nothing to roll back"
+  head=$(alembic "$image" heads)
+  [[ $head =~ ^[0-9a-z_]+$ ]] || die "$image has no single migration head: $head"
+
+  if [ "$revision" = "$head" ]; then
+    log "code-only rollback: the schema is already at $head"
+  else
+    backup=$(find "$BACKUPS" -maxdepth 1 -name "superset-meta_${SUPERSET_IMAGE_TAG}_${head}_*.dump" | sort | tail -n1)
+    [ -n "$backup" ] || die "no backup for image $SUPERSET_IMAGE_TAG at revision $head in $BACKUPS"
+    mkdir -p "$STATE"
+    printf '%s\n' "$sha" >"$ROLLBACK_MARK"
+    restore_metadata "$backup" "$head"
+  fi
+
+  promote "$release" "$sha"
+  ensure_proxy_network
+  compose "$LIVE" traefik up -d --wait --remove-orphans
+  # No superset-init: the schema already matches the target image.
+  while IFS= read -r dir; do
+    compose "$LIVE" "$dir" up -d --wait --remove-orphans
+  done < <(stack_dirs "$LIVE")
+  smoke_tests
+  record_state "$sha"
+  rm -f "$ROLLBACK_MARK"
+  trap - EXIT
+  log "rolled back to $sha; now git revert and push so main matches"
+}
+
+main "$@"
diff --git a/host/bootstrap.sh b/host/bootstrap.sh
new file mode 100755
index 0000000..373ba74
--- /dev/null
+++ b/host/bootstrap.sh
@@ -0,0 +1,105 @@
+#!/usr/bin/env bash
+# One-time host preparation for the petrolyst server (Ubuntu 24.04), run as root.
+# Idempotent: re-running converges to the same state.
+#
+#   bootstrap.sh --ci-key <public-key-file> --runner-ip <ip|any>
+#
+# --ci-key     public half of the dedicated CI deploy key (DEPLOY_SSH_KEY in Gitea)
+# --runner-ip  egress IP of the Gitea act_runner; the deploy key works only from
+#              there ("any" drops that restriction, e.g. before the runner exists)
+set -euo pipefail
+
+die() { echo "ERROR: $*" >&2; exit 1; }
+[ "$(id -u)" = 0 ] || die "run as root"
+
+ci_key='' runner_ip=''
+while [ $# -gt 0 ]; do
+  case $1 in
+    --ci-key) ci_key=$2; shift 2 ;;
+    --runner-ip) runner_ip=$2; shift 2 ;;
+    *) die "unknown argument $1" ;;
+  esac
+done
+[ -s "$ci_key" ] || die "--ci-key <public-key-file> is required"
+[ -n "$runner_ip" ] || die "--runner-ip <ip|any> is required"
+grep -qE '^ssh-(ed25519|rsa) ' "$ci_key" || die "$ci_key does not look like an SSH public key"
+
+ROOT=/opt/petrolyst
+
+echo "== packages and Docker (official apt repository)"
+apt-get update -q
+apt-get install -y -q ca-certificates curl rsync ufw
+install -m 0755 -d /etc/apt/keyrings
+curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
+chmod a+r /etc/apt/keyrings/docker.asc
+# shellcheck source=/dev/null
+codename=$(. /etc/os-release && echo "$VERSION_CODENAME")
+echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu $codename stable" \
+  >/etc/apt/sources.list.d/docker.list
+apt-get update -q
+apt-get install -y -q docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
+
+daemon_json='{
+  "log-driver": "json-file",
+  "log-opts": { "max-size": "10m", "max-file": "3" },
+  "live-restore": true
+}'
+if [ "$(cat /etc/docker/daemon.json 2>/dev/null)" != "$daemon_json" ]; then
+  printf '%s\n' "$daemon_json" >/etc/docker/daemon.json
+  systemctl restart docker
+fi
+systemctl enable --now docker
+
+echo "== swap (4 GB) for Trino, Superset and two Postgres in 7.8 GB"
+if ! swapon --show=NAME --noheadings | grep -qx /swapfile; then
+  [ -e /swapfile ] || fallocate -l 4G /swapfile
+  chmod 600 /swapfile
+  mkswap /swapfile >/dev/null
+  swapon /swapfile
+fi
+grep -q '^/swapfile ' /etc/fstab || echo '/swapfile none swap sw 0 0' >>/etc/fstab
+echo 'vm.swappiness=10' >/etc/sysctl.d/99-petrolyst.conf
+sysctl -q -p /etc/sysctl.d/99-petrolyst.conf
+
+echo "== firewall: 22, 80, 443 only"
+# Docker-published ports bypass ufw. Only Traefik publishes publicly; every
+# other published port in the stacks binds to 127.0.0.1.
+ufw default deny incoming >/dev/null
+ufw default allow outgoing >/dev/null
+for port in 22 80 443; do ufw allow "$port/tcp" >/dev/null; done
+ufw --force enable >/dev/null
+
+echo "== deploy user (CI)"
+id deploy >/dev/null 2>&1 || useradd --create-home --shell /bin/bash deploy
+usermod -aG docker deploy # docker access makes deploy root-equivalent; the key restrictions below matter
+install -d -o deploy -g deploy -m 0700 /home/deploy/.ssh
+options=restrict
+[ "$runner_ip" = any ] || options="restrict,from=\"$runner_ip\""
+printf '%s %s\n' "$options" "$(cat "$ci_key")" >/home/deploy/.ssh/authorized_keys
+chown deploy:deploy /home/deploy/.ssh/authorized_keys
+chmod 0600 /home/deploy/.ssh/authorized_keys
+
+echo "== SSH: keys only"
+[ -s /root/.ssh/authorized_keys ] || die "root has no authorized_keys; refusing to turn off password login"
+# 00- sorts before cloud-init's 50-cloud-init.conf, and sshd keeps the first
+# value it reads, so these win over its PasswordAuthentication yes.
+cat >/etc/ssh/sshd_config.d/00-petrolyst.conf <<'EOF'
+PasswordAuthentication no
+KbdInteractiveAuthentication no
+PermitRootLogin prohibit-password
+EOF
+sshd -t
+systemctl reload ssh
+
+echo "== /opt/petrolyst"
+install -d -o root -g root -m 0755 "$ROOT"
+install -d -o deploy -g deploy -m 0755 "$ROOT/infra" "$ROOT/releases" "$ROOT/incoming" "$ROOT/state"
+install -d -o deploy -g deploy -m 0750 "$ROOT/backups"
+[ -e "$ROOT/deploy.lock" ] || install -o deploy -g deploy -m 0640 /dev/null "$ROOT/deploy.lock"
+docker network inspect proxy >/dev/null 2>&1 || docker network create proxy >/dev/null
+
+echo
+echo "Done. Before closing this session, check from another terminal that"
+echo "  ssh petrolyst            still logs you in as root, and"
+echo "  sshd -T | grep -E 'passwordauthentication|permitrootlogin'   shows no / prohibit-password."
+echo "Next: host/secrets-init.sh"
diff --git a/host/secrets-init.sh b/host/secrets-init.sh
new file mode 100755
index 0000000..c11ce53
--- /dev/null
+++ b/host/secrets-init.sh
@@ -0,0 +1,86 @@
+#!/usr/bin/env bash
+# Server secrets and env files, run as root after bootstrap.sh.
+#   secrets-init.sh                  generate every missing secret; never overwrites one
+#   secrets-init.sh keycloak-secret  store the client secret of Keycloak client
+#                                    "petrolyst" (Clients > petrolyst > Credentials),
+#                                    read from the terminal or stdin
+#
+# Layout: /opt/petrolyst/secrets/{shared,traefik,fuel-monitoring}/ are root:deploy
+# 0750, so only root and the deploy user can reach them; the files are 0444
+# because each container reads them under its own uid.
+set -euo pipefail
+
+die() { echo "ERROR: $*" >&2; exit 1; }
+[ "$(id -u)" = 0 ] || die "run as root"
+getent group deploy >/dev/null || die "group deploy is missing: run host/bootstrap.sh first"
+
+ROOT=/opt/petrolyst
+SECRETS=$ROOT/secrets
+umask 077
+install -d -o root -g deploy -m 0750 "$SECRETS" "$SECRETS/shared" "$SECRETS/traefik" "$SECRETS/fuel-monitoring" "$ROOT/env"
+
+# write_secret <path> <value>: no trailing newline (oauth2-proxy reads the file
+# byte for byte), replaced atomically.
+write_secret() {
+  printf '%s' "$2" >"$1.tmp"
+  chown root:deploy "$1.tmp"
+  chmod 0444 "$1.tmp"
+  mv "$1.tmp" "$1"
+}
+
+generate() {
+  if [ -s "$1" ]; then
+    echo "kept      $1"
+  else
+    write_secret "$1" "$(openssl rand -hex "$2")"
+    echo "generated $1"
+  fi
+}
+
+case ${1:-all} in
+  keycloak-secret)
+    if [ -t 0 ]; then
+      printf 'Client secret of Keycloak client "petrolyst": ' >&2
+      IFS= read -rs value
+      echo >&2
+    else
+      IFS= read -r value
+    fi
+    value=$(printf '%s' "$value" | tr -d '[:space:]')
+    [ -n "$value" ] || die "empty secret"
+    write_secret "$SECRETS/shared/keycloak_petrolyst_client_secret" "$value"
+    echo "stored    $SECRETS/shared/keycloak_petrolyst_client_secret"
+    exit 0
+    ;;
+  all) ;;
+  *) die "usage: secrets-init.sh [keycloak-secret]" ;;
+esac
+
+# Hex only, so no value ever needs quoting in a URL or a properties file.
+generate "$SECRETS/fuel-monitoring/superset_secret_key" 32
+generate "$SECRETS/fuel-monitoring/superset_db_password" 32
+generate "$SECRETS/fuel-monitoring/fuel_db_password" 32
+generate "$SECRETS/fuel-monitoring/fuel_db_trino_password" 32
+# 32 hex characters = a 32-byte cookie key, as oauth2-proxy requires.
+generate "$SECRETS/traefik/oauth2_proxy_cookie_secret" 16
+
+# Trino reads the catalog password from its environment (${ENV:...}); keep the
+# env file in step with the secret file that fuel-db's init script uses.
+env_file=$ROOT/env/fuel-monitoring.env
+line="FUEL_DB_TRINO_PASSWORD=$(cat "$SECRETS/fuel-monitoring/fuel_db_trino_password")"
+if ! grep -qxF "$line" "$env_file" 2>/dev/null; then
+  printf '%s\n' "$line" >"$env_file.tmp"
+  chown root:deploy "$env_file.tmp"
+  chmod 0440 "$env_file.tmp"
+  mv "$env_file.tmp" "$env_file"
+  echo "wrote     $env_file"
+fi
+
+if [ ! -s "$SECRETS/shared/keycloak_petrolyst_client_secret" ]; then
+  echo
+  echo "Still missing: the Keycloak client secret. Copy it from Keycloak"
+  echo "(realm thedigitalbridge > Clients > petrolyst > Credentials), then run:"
+  echo "  $0 keycloak-secret"
+  exit 1
+fi
+echo "All secrets present."
diff --git a/keycloak/petrolyst-partial-import.json b/keycloak/petrolyst-partial-import.json
new file mode 100644
index 0000000..77e4295
--- /dev/null
+++ b/keycloak/petrolyst-partial-import.json
@@ -0,0 +1,56 @@
+{
+  "clients": [
+    {
+      "clientId": "petrolyst",
+      "name": "Petrolyst",
+      "description": "Petrolyst apps on the petrolyst server: Superset at atoma.petrolyst.com and the Traefik dashboard at traefik.petrolyst.com (oauth2-proxy). Managed from petrolyst-infra/keycloak/.",
+      "enabled": true,
+      "protocol": "openid-connect",
+      "publicClient": false,
+      "clientAuthenticatorType": "client-secret",
+      "standardFlowEnabled": true,
+      "implicitFlowEnabled": false,
+      "directAccessGrantsEnabled": false,
+      "serviceAccountsEnabled": false,
+      "frontchannelLogout": true,
+      "baseUrl": "https://atoma.petrolyst.com/",
+      "redirectUris": [
+        "https://atoma.petrolyst.com/oauth-authorized/keycloak",
+        "https://traefik.petrolyst.com/oauth2/callback"
+      ],
+      "webOrigins": ["+"],
+      "attributes": {
+        "pkce.code.challenge.method": "S256",
+        "post.logout.redirect.uris": "https://atoma.petrolyst.com/*##https://traefik.petrolyst.com/*"
+      },
+      "protocolMappers": [
+        {
+          "name": "petrolyst client roles",
+          "protocol": "openid-connect",
+          "protocolMapper": "oidc-usermodel-client-role-mapper",
+          "consentRequired": false,
+          "config": {
+            "usermodel.clientRoleMapping.clientId": "petrolyst",
+            "multivalued": "true",
+            "claim.name": "petrolyst_roles",
+            "jsonType.label": "String",
+            "id.token.claim": "true",
+            "access.token.claim": "true",
+            "userinfo.token.claim": "true",
+            "introspection.token.claim": "true"
+          }
+        }
+      ]
+    }
+  ],
+  "roles": {
+    "client": {
+      "petrolyst": [
+        { "name": "superset-admin", "description": "Superset Admin at atoma.petrolyst.com" },
+        { "name": "superset-editor", "description": "Superset Alpha: build charts and dashboards" },
+        { "name": "superset-viewer", "description": "Superset Gamma: view dashboards shared with the role" },
+        { "name": "traefik-admin", "description": "Traefik dashboard at traefik.petrolyst.com" }
+      ]
+    }
+  }
+}
diff --git a/petrolyst-insights/README.md b/petrolyst-insights/README.md
new file mode 100644
index 0000000..14a5228
--- /dev/null
+++ b/petrolyst-insights/README.md
@@ -0,0 +1,73 @@
+# petrolyst-insights
+
+The Petrolyst customization of Apache Superset 6.1.0: sign-in, roles, look and feel, patches
+and dashboards. Consumed by the deployment folders of this repository at image-build time.
+**Not runnable standalone**: this folder has no Dockerfile, no Compose file, no CI and no
+secrets. `deploy/deploy.sh` refuses to deploy if one appears here.
+
+The split follows media-insights (customization) and media-intelligence-docker (deployment):
+anything that changes how Superset looks or behaves for Petrolyst lives here; anything about how
+and where it runs lives in `stacks/`, `traefik/`, `deploy/` and `host/`.
+
+## Layout
+
+| Path | What it is | In the image at |
+|---|---|---|
+| `superset_config.py` | Keycloak sign-in, role mapping, proxy and cookie settings, Redis caches, theme and chart palettes | `/app/pythonpath/` |
+| `petrolyst_security.py` | `PetrolystSecurityManager`: user info and roles from the Keycloak ID token, `/login/` straight to Keycloak, `/logout/` through Keycloak | `/app/pythonpath/` |
+| `assets/branding/` | logos (full colour and white), favicons, app icons | `/app/superset/static/assets/branding/`, served at `/static/assets/branding/…` |
+| `patches/` | runtime patches, `fix_*.py` with `--verify` (see its README); empty at start | `/app/patches/petrolyst/`, applied during the build |
+| `dashboards/` | exported dashboards and import scripts (see its README) | not in the image |
+
+How the image consumes this folder: `stacks/fuel-monitoring/compose.yaml` passes it to the build
+as the named context `insights`, and the Dockerfile copies from it with `COPY --from=insights`.
+The image tag is a hash of exactly the inputs above that end up in the image, so a change here
+rebuilds and recreates only the `superset` container.
+
+## Secrets read
+
+`superset_config.py` uses `_read_secret(name)` (copied from media-insights): it prefers
+`/run/secrets/<name>` and falls back to an env var for local runs, and fails at boot on an empty
+value.
+
+| Secret | Purpose |
+|---|---|
+| `superset_secret_key` | Flask `SECRET_KEY` |
+| `superset_db_password` | password of user `superset` on the metadata database |
+| `keycloak_petrolyst_client_secret` | client secret of Keycloak client `petrolyst` |
+
+On the server they come from `/opt/petrolyst/secrets/` (see the deployment README).
+
+## Sign-in and roles
+
+- Provider: Keycloak realm `thedigitalbridge` at `iam.thedigitalbridge.io`, client `petrolyst`,
+  authorization code flow with PKCE S256. The realm URL can be overridden with
+  `KEYCLOAK_REALM_URL`.
+- Roles come from the client roles of `petrolyst`, which a protocol mapper puts into the claim
+  `petrolyst_roles`, and are re-read at every login:
+
+  | Keycloak client role | Superset role |
+  |---|---|
+  | `superset-admin` | Admin |
+  | `superset-editor` | Alpha |
+  | `superset-viewer` | Gamma |
+  | none | Public (no permissions) |
+
+- `DASHBOARD_RBAC` is on: a viewer sees a dashboard once an admin adds the Gamma role (or a
+  custom one) to it.
+
+## Look and feel
+
+Source: `petrolyst-ui/design/brand/` (tokens `07_UI_Tokens/petrolyst_tokens.css`, logos
+`public/brand/`, favicons `03_Favicon_App_Icons/`), copied on 2026-10-23 from petrolyst-ui commit
+`2b2e694`. Copy again when the brand changes.
+
+- Light theme: action teal `#00695C` for primary and links, navy `#0B1D33` text, `#F8FAFC`
+  layout, full-colour stacked logo.
+- Dark theme: `#35C5B6` primary, `#071425` / `#12263D` surfaces, white logo.
+- Font: Inter, Superset's default. Satoshi is licence-restricted and is not used.
+- Chart palettes: "Petrolyst" categorical (the default, brand teal first) and "Petrolyst Teal" /
+  "Petrolyst Navy" sequential. The categorical palette was validated with the dataviz skill's
+  validator on both chart surfaces; the numbers are in the comment above it in
+  `superset_config.py`. Charts with more than three series in scatter or map form should fold
+  the rest into "Other".
diff --git a/petrolyst-insights/assets/branding/favicon.ico b/petrolyst-insights/assets/branding/favicon.ico
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new file mode 100644
index 0000000..3d742ab
--- /dev/null
+++ b/petrolyst-insights/assets/branding/favicon.svg
@@ -0,0 +1,2 @@
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diff --git a/petrolyst-insights/assets/branding/petrolyst_logo_standard_white_no_tagline.svg b/petrolyst-insights/assets/branding/petrolyst_logo_standard_white_no_tagline.svg
new file mode 100644
index 0000000..f6a8321
--- /dev/null
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+
+</svg>
\ No newline at end of file
diff --git a/petrolyst-insights/dashboards/README.md b/petrolyst-insights/dashboards/README.md
new file mode 100644
index 0000000..1472731
--- /dev/null
+++ b/petrolyst-insights/dashboards/README.md
@@ -0,0 +1,14 @@
+# dashboards/
+
+Exported Superset dashboards and the operator scripts that import them. Not baked into the
+image, so changes here do not rebuild or restart Superset. Empty until the first fuel
+dashboards exist.
+
+Export from a running instance (inside the container, as the server's deploy user):
+
+    docker exec fuel-monitoring-superset-1 superset export-dashboards -f /tmp/dashboards.zip
+    docker cp fuel-monitoring-superset-1:/tmp/dashboards.zip .
+
+Import is the reverse with `superset import-dashboards -p <zip> -u <username>`. The
+username must be an existing Superset user, which here means someone who has signed in
+through Keycloak at least once.
diff --git a/petrolyst-insights/patches/README.md b/petrolyst-insights/patches/README.md
new file mode 100644
index 0000000..668752d
--- /dev/null
+++ b/petrolyst-insights/patches/README.md
@@ -0,0 +1,16 @@
+# patches/
+
+Runtime patches applied while the Superset image is built
+(`stacks/fuel-monitoring/superset/Dockerfile`). Empty until Petrolyst needs one.
+
+Same convention as media-insights:
+
+- One file per fix, named `fix_<what>.py`. It patches files inside the installed image
+  (`/app/superset/...` or the venv), for changes that cannot be made through
+  `superset_config.py`.
+- `python3 fix_<what>.py` applies the patch; `python3 fix_<what>.py --verify` exits non-zero
+  unless the patched code is in place. Both must be idempotent.
+- The Dockerfile runs both for every `fix_*.py` and stops at the first failure, so a patch that
+  no longer applies to a new Superset version fails the build instead of shipping silently.
+- Everything in this folder is a build input: changing it gives the image a new tag and
+  recreates the `superset` container on the next deploy.
diff --git a/petrolyst-insights/petrolyst_security.py b/petrolyst-insights/petrolyst_security.py
new file mode 100644
index 0000000..f5e6bb0
--- /dev/null
+++ b/petrolyst-insights/petrolyst_security.py
@@ -0,0 +1,92 @@
+"""Keycloak sign-in for Superset at atoma.petrolyst.com.
+
+Set as CUSTOM_SECURITY_MANAGER in superset_config.py. Checked against
+Flask-AppBuilder 5.0.2 as bundled in apache/superset:6.1.0. Three changes to
+the stock behaviour:
+
+- User info and roles come from the ID token that Keycloak issues for client
+  "petrolyst" (claim petrolyst_roles). FAB's built-in Keycloak branch would read
+  a "groups" claim from the userinfo endpoint instead.
+- /login/ goes straight to Keycloak. Superset 6.1 normally registers its React
+  login page on /login/, which only shows a "Sign in with keycloak" button.
+- /logout/ also ends the Keycloak session, so the next visit asks for the
+  password and OTP again.
+"""
+
+import logging
+from typing import Any, Optional
+from urllib.parse import urlencode
+
+from flask import g, redirect, request, url_for
+from flask_appbuilder import expose
+from flask_appbuilder.security.views import AuthOAuthView
+from flask_appbuilder.utils.base import get_safe_redirect
+from flask_login import logout_user
+from werkzeug.wrappers import Response as WerkzeugResponse
+
+from superset.security import SupersetSecurityManager
+
+logger = logging.getLogger(__name__)
+
+PROVIDER = "keycloak"
+ROLE_CLAIM = "petrolyst_roles"
+
+
+class PetrolystAuthOAuthView(AuthOAuthView):
+    @expose("/login/")
+    @expose("/login/<provider>")
+    def login(self, provider: Optional[str] = None) -> WerkzeugResponse:
+        authenticated = g.user is not None and g.user.is_authenticated
+        if provider is None and not authenticated:
+            # FAB encodes the query arguments into the OAuth state and runs
+            # get_safe_redirect on "next" again after the callback; checking it
+            # here as well keeps an unsafe value out of the state altogether.
+            args = {}
+            if request.args.get("next"):
+                args["next"] = get_safe_redirect(request.args["next"])
+            return redirect(url_for(".login", provider=PROVIDER, **args))
+        return super().login(provider)
+
+    @expose("/logout/")
+    def logout(self) -> WerkzeugResponse:
+        logout_user()
+        remote = self.appbuilder.sm.oauth_remotes[PROVIDER]
+        end_session = remote.load_server_metadata().get("end_session_endpoint")
+        if not end_session:
+            logger.warning("Keycloak metadata has no end_session_endpoint")
+            return redirect(self.appbuilder.get_url_for_index)
+        # client_id instead of id_token_hint: Keycloak then asks the user to
+        # confirm the logout once, and no ID token has to live in the cookie.
+        params = {
+            "client_id": remote.client_id,
+            "post_logout_redirect_uri": request.host_url,
+        }
+        return redirect(f"{end_session}?{urlencode(params)}")
+
+
+class PetrolystSecurityManager(SupersetSecurityManager):
+    authoauthview = PetrolystAuthOAuthView
+    # Without this, Superset registers its React login page on /login/ before
+    # FAB's OAuth view, and that page wins the route.
+    register_superset_auth_view = False
+
+    def oauth_user_info(
+        self, provider: str, response: Optional[dict[str, Any]] = None
+    ) -> dict[str, Any]:
+        if provider != PROVIDER:
+            raise ValueError(f"unsupported OAuth provider {provider!r}")
+        # Authlib verifies the ID token (signature, issuer, audience, nonce)
+        # and puts its claims under "userinfo".
+        claims = (response or {}).get("userinfo")
+        if not claims:
+            claims = self.oauth_remotes[provider].userinfo()
+        username = claims.get("preferred_username")
+        if not username:
+            raise ValueError("Keycloak token has no preferred_username")
+        return {
+            "username": username,
+            "email": claims.get("email", ""),
+            "first_name": claims.get("given_name", ""),
+            "last_name": claims.get("family_name", ""),
+            "role_keys": list(claims.get(ROLE_CLAIM) or []),
+        }
diff --git a/petrolyst-insights/superset_config.py b/petrolyst-insights/superset_config.py
new file mode 100644
index 0000000..3ba6d4c
--- /dev/null
+++ b/petrolyst-insights/superset_config.py
@@ -0,0 +1,252 @@
+"""Superset configuration for Petrolyst (ATOMA fuel monitoring).
+
+Customization only, and no secrets: those are read from /run/secrets/<name>,
+which stacks/fuel-monitoring/compose.yaml mounts from /opt/petrolyst/secrets/.
+Baked into the image at /app/pythonpath/, which is on PYTHONPATH in
+apache/superset:6.1.0, so Superset loads it without SUPERSET_CONFIG_PATH.
+"""
+
+import os
+import pathlib
+from copy import deepcopy
+
+from flask_appbuilder.security.manager import AUTH_OAUTH
+from sqlalchemy.engine.url import URL
+
+from petrolyst_security import PetrolystSecurityManager
+from superset import config as superset_defaults
+
+
+def _read_secret(name: str, env_var: str | None = None) -> str:
+    """Prefer /run/secrets/<name>; fall back to an env var for local dev.
+
+    Uses rstrip('\r\n') (not strip()) so passwords or keys that legitimately
+    contain leading/trailing spaces are not silently mutated. Raises on empty
+    values so boot fails loudly instead of accepting a blank secret.
+    """
+    path = pathlib.Path(f"/run/secrets/{name}")
+    if path.is_file():
+        value = path.read_text().rstrip("\r\n")
+    else:
+        value = os.environ[env_var or name.upper()]
+    if not value:
+        raise RuntimeError(f"secret {name!r} must not be empty")
+    return value
+
+
+SECRET_KEY = _read_secret("superset_secret_key", "SUPERSET_SECRET_KEY")
+
+SQLALCHEMY_DATABASE_URI = URL.create(
+    "postgresql+psycopg2",
+    username="superset",
+    password=_read_secret("superset_db_password", "SUPERSET_DB_PASSWORD"),
+    host=os.environ.get("SUPERSET_DB_HOST", "superset-db"),
+    port=5432,
+    database="superset",
+).render_as_string(hide_password=False)
+
+# --- Sign-in through Keycloak (client "petrolyst") ----------------------------
+# Users and roles are managed in Keycloak; there is no local admin account.
+# Break-glass access: `superset fab ...` inside the container on the server.
+KEYCLOAK_REALM_URL = os.environ.get(
+    "KEYCLOAK_REALM_URL", "https://iam.thedigitalbridge.io/realms/thedigitalbridge"
+).rstrip("/")
+
+AUTH_TYPE = AUTH_OAUTH
+CUSTOM_SECURITY_MANAGER = PetrolystSecurityManager
+OAUTH_PROVIDERS = [
+    {
+        "name": "keycloak",
+        "icon": "fa-key",
+        "token_key": "access_token",
+        "remote_app": {
+            "client_id": os.environ.get("KEYCLOAK_CLIENT_ID", "petrolyst"),
+            "client_secret": _read_secret(
+                "keycloak_petrolyst_client_secret", "KEYCLOAK_CLIENT_SECRET"
+            ),
+            "server_metadata_url": f"{KEYCLOAK_REALM_URL}/.well-known/openid-configuration",
+            "api_base_url": f"{KEYCLOAK_REALM_URL}/protocol/openid-connect/",
+            "client_kwargs": {
+                "scope": "openid email profile",
+                "code_challenge_method": "S256",
+            },
+        },
+    }
+]
+
+# Keys are Keycloak client roles of "petrolyst" (claim petrolyst_roles).
+AUTH_ROLES_MAPPING = {
+    "superset-admin": ["Admin"],
+    "superset-editor": ["Alpha"],
+    "superset-viewer": ["Gamma"],
+}
+AUTH_ROLES_SYNC_AT_LOGIN = True
+AUTH_USER_REGISTRATION = True
+# Public has no permissions: a Keycloak user without a Superset role signs in
+# and sees nothing.
+AUTH_USER_REGISTRATION_ROLE = "Public"
+
+# Viewers (Gamma) see a dashboard once it lists their role.
+FEATURE_FLAGS = {"DASHBOARD_RBAC": True}
+
+# --- Behind Traefik -----------------------------------------------------------
+ENABLE_PROXY_FIX = True
+PREFERRED_URL_SCHEME = "https"
+SESSION_COOKIE_SECURE = True
+SESSION_COOKIE_HTTPONLY = True
+SESSION_COOKIE_SAMESITE = "Lax"
+TALISMAN_CONFIG = deepcopy(superset_defaults.TALISMAN_CONFIG)
+TALISMAN_CONFIG["session_cookie_secure"] = True
+
+# --- Redis: caches and rate limits (no Celery, so no results backend) ---------
+REDIS_URL = os.environ.get("REDIS_URL", "redis://redis:6379")
+
+CACHE_CONFIG = {
+    "CACHE_TYPE": "RedisCache",
+    "CACHE_DEFAULT_TIMEOUT": 300,
+    "CACHE_KEY_PREFIX": "superset_cache_",
+    "CACHE_REDIS_URL": f"{REDIS_URL}/0",
+}
+DATA_CACHE_CONFIG = {
+    "CACHE_TYPE": "RedisCache",
+    "CACHE_DEFAULT_TIMEOUT": 3600,
+    "CACHE_KEY_PREFIX": "superset_data_",
+    "CACHE_REDIS_URL": f"{REDIS_URL}/0",
+}
+FILTER_STATE_CACHE_CONFIG = {
+    "CACHE_TYPE": "RedisCache",
+    "CACHE_DEFAULT_TIMEOUT": 86400,
+    "CACHE_KEY_PREFIX": "superset_filter_",
+    "CACHE_REDIS_URL": f"{REDIS_URL}/0",
+}
+EXPLORE_FORM_DATA_CACHE_CONFIG = {
+    "CACHE_TYPE": "RedisCache",
+    "CACHE_DEFAULT_TIMEOUT": 86400,
+    "CACHE_KEY_PREFIX": "superset_explore_",
+    "CACHE_REDIS_URL": f"{REDIS_URL}/0",
+}
+RATELIMIT_STORAGE_URI = f"{REDIS_URL}/1"
+
+# --- Petrolyst look and feel --------------------------------------------------
+# Values from petrolyst-ui/design/brand/07_UI_Tokens/petrolyst_tokens.css.
+# Assets live in assets/branding/ and are served from /static/assets/branding/.
+BRANDING = "/static/assets/branding"
+
+APP_NAME = "Petrolyst"
+APP_ICON = f"{BRANDING}/petrolyst_logo_standard_fullcolor_no_tagline.svg"
+FAVICONS = [
+    {"href": f"{BRANDING}/favicon.svg", "type": "image/svg+xml"},
+    {"href": f"{BRANDING}/favicon.ico", "type": "image/x-icon"},
+    {"href": f"{BRANDING}/petrolyst_icon_180.png", "rel": "apple-touch-icon"},
+]
+
+THEME_DEFAULT = deepcopy(superset_defaults.THEME_DEFAULT)
+THEME_DEFAULT["token"].update(
+    {
+        "brandAppName": APP_NAME,
+        "brandLogoAlt": "Petrolyst",
+        "brandLogoUrl": APP_ICON,
+        "brandLogoHref": "/",
+        # The standard logo is stacked (mark over wordmark); 40px keeps the Y
+        # legible and, with the margin, the 60px navbar height.
+        "brandLogoHeight": "40px",
+        "brandLogoMargin": "10px 0",
+        # Action teal, not the raw brand teal #009688: the brand guide keeps
+        # raw teal off small text and controls.
+        "colorPrimary": "#00695C",
+        "colorLink": "#00695C",
+        "colorSuccess": "#0F7B6C",
+        "colorWarning": "#B45309",
+        "colorError": "#B3261E",
+        "colorInfo": "#2563EB",
+        "colorTextBase": "#0B1D33",
+        "colorBgLayout": "#F8FAFC",
+        "colorBorder": "#E2E8F0",
+        "borderRadius": 8,
+        "fontFamily": "Inter, system-ui, sans-serif",
+    }
+)
+
+THEME_DARK = deepcopy(THEME_DEFAULT)
+THEME_DARK["algorithm"] = "dark"
+THEME_DARK["token"].update(
+    {
+        "brandLogoUrl": f"{BRANDING}/petrolyst_logo_standard_white_no_tagline.svg",
+        "colorPrimary": "#35C5B6",
+        "colorLink": "#35C5B6",
+        "colorSuccess": "#35C5B6",
+        "colorWarning": "#F59E0B",
+        "colorError": "#FF6B6B",
+        "colorInfo": "#60A5FA",
+        "colorTextBase": "#F8FAFC",
+        "colorBgBase": "#071425",
+        "colorBgLayout": "#071425",
+        "colorBgContainer": "#12263D",
+        "colorBorder": "#526D82",
+        "colorEditorSelection": superset_defaults.THEME_DARK["token"][
+            "colorEditorSelection"
+        ],
+    }
+)
+
+# Chart colours. Validated with the dataviz skill's validator on both chart
+# surfaces (#FFFFFF light, #12263D dark): all slots in both lightness bands and
+# >= 3:1; worst adjacent CVD dE 13.7, normal-vision dE 26.2; the first three
+# slots also pass all-pairs (scatter, maps). Brand teal leads; brand cyan
+# #00B6E6 is snapped to #0097C4 because it is too light for the dark surface
+# and below 3:1 on white. The other hues come from the validated reference set.
+# Status meaning (warning, critical) never rides on these colours.
+EXTRA_CATEGORICAL_COLOR_SCHEMES = [
+    {
+        "id": "petrolyst",
+        "description": "Petrolyst categorical palette, brand teal first",
+        "label": "Petrolyst",
+        "isDefault": True,
+        "colors": [
+            "#009688",  # brand teal
+            "#d95926",  # orange
+            "#9085e9",  # violet
+            "#c98500",  # amber
+            "#0097C4",  # brand cyan, snapped
+            "#e34948",  # red
+            "#3987e5",  # blue
+            "#d55181",  # magenta
+        ],
+    }
+]
+
+# One hue, light to dark; the lightest step means "near zero" and may recede.
+EXTRA_SEQUENTIAL_COLOR_SCHEMES = [
+    {
+        "id": "petrolyst_teal",
+        "description": "Petrolyst teal, light to dark",
+        "label": "Petrolyst Teal",
+        "isDiverging": False,
+        "isDefault": True,
+        "colors": [
+            "#E6F4F2",
+            "#B3DED8",
+            "#7FC8BE",
+            "#4CB2A4",
+            "#009688",
+            "#00695C",
+            "#004D44",
+        ],
+    },
+    {
+        "id": "petrolyst_navy",
+        "description": "Petrolyst navy, light to dark",
+        "label": "Petrolyst Navy",
+        "isDiverging": False,
+        "isDefault": False,
+        "colors": [
+            "#E8EEF5",
+            "#C3D1E2",
+            "#8FA7C4",
+            "#5C7DA6",
+            "#2F5585",
+            "#183A63",
+            "#0B1D33",
+        ],
+    },
+]
diff --git a/stacks/fuel-monitoring/compose.yaml b/stacks/fuel-monitoring/compose.yaml
new file mode 100644
index 0000000..0c9feff
--- /dev/null
+++ b/stacks/fuel-monitoring/compose.yaml
@@ -0,0 +1,174 @@
+# Fuel-monitoring analytics: Superset on atoma.petrolyst.com, reading the
+# operational store (fuel-db) through Trino. Run only through deploy/deploy.sh
+# or deploy/rollback.sh: they export SUPERSET_IMAGE_TAG and TRINO_CONFIG_HASH
+# from the release's ARTIFACTS file, and the :? guards below stop Compose from
+# running with either unset.
+name: fuel-monitoring
+
+x-superset-env: &superset-env
+  KEYCLOAK_REALM_URL: ${KEYCLOAK_REALM_URL:-https://iam.thedigitalbridge.io/realms/thedigitalbridge}
+
+x-superset: &superset
+  image: fuel-superset:${SUPERSET_IMAGE_TAG:?SUPERSET_IMAGE_TAG unset - run through deploy/deploy.sh}
+  pull_policy: never
+  secrets:
+    - superset_secret_key
+    - superset_db_password
+    - keycloak_petrolyst_client_secret
+
+services:
+  superset:
+    <<: *superset
+    build:
+      context: ./superset
+      additional_contexts:
+        insights: ../../petrolyst-insights
+    environment:
+      <<: *superset-env
+      SERVER_WORKER_AMOUNT: "2"
+    restart: unless-stopped
+    depends_on:
+      superset-db:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+    networks:
+      - backend
+      - proxy
+    mem_limit: 1536m
+    healthcheck:
+      test: ["CMD", "curl", "-fsS", "http://127.0.0.1:8088/health"]
+      interval: 15s
+      timeout: 5s
+      retries: 10
+      start_period: 60s
+    labels:
+      traefik.enable: "true"
+      traefik.docker.network: proxy
+      traefik.http.routers.fm-superset.rule: Host(`${ATOMA_HOST:-atoma.petrolyst.com}`)
+      traefik.http.routers.fm-superset.entrypoints: websecure
+      traefik.http.routers.fm-superset.tls.certresolver: le
+      traefik.http.routers.fm-superset.middlewares: secure-headers@file
+      traefik.http.services.fm-superset.loadbalancer.server.port: "8088"
+
+  # One-shot: never started by `up`; deploy.sh runs it with `compose run --rm`.
+  superset-init:
+    <<: *superset
+    profiles: ["init"]
+    environment: *superset-env
+    command: ["/bin/bash", "/app/petrolyst-init.sh"]
+    depends_on:
+      superset-db:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+    networks:
+      - backend
+    restart: "no"
+
+  superset-db:
+    image: postgres:17.11-alpine
+    environment:
+      POSTGRES_USER: superset
+      POSTGRES_DB: superset
+      POSTGRES_PASSWORD_FILE: /run/secrets/superset_db_password
+    secrets:
+      - superset_db_password
+    volumes:
+      - superset_db_data:/var/lib/postgresql/data
+    networks:
+      - backend
+    restart: unless-stopped
+    mem_limit: 512m
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U superset -d superset"]
+      interval: 10s
+      timeout: 5s
+      retries: 10
+
+  # Cache and rate-limit store only; nothing to persist.
+  redis:
+    image: redis:7.4.11-alpine
+    command: ["redis-server", "--maxmemory", "128mb", "--maxmemory-policy", "allkeys-lru", "--save", "", "--appendonly", "no"]
+    networks:
+      - backend
+    restart: unless-stopped
+    mem_limit: 256m
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 10s
+      timeout: 5s
+      retries: 10
+
+  trino:
+    image: trinodb/trino:484
+    env_file:
+      - ${PETROLYST_ROOT:-/opt/petrolyst}/env/fuel-monitoring.env
+    volumes:
+      - ./trino/etc:/etc/trino:ro
+    labels:
+      # Compose cannot see content changes in a bind mount; this label changes
+      # with trino/etc, so exactly a config change recreates the container.
+      petrolyst.config-hash: ${TRINO_CONFIG_HASH:?TRINO_CONFIG_HASH unset - run through deploy/deploy.sh}
+    depends_on:
+      fuel-db:
+        condition: service_healthy
+    networks:
+      - backend
+    restart: unless-stopped
+    mem_limit: 3g
+    # The image's own healthcheck (/usr/lib/trino/bin/health-check) applies.
+
+  fuel-db:
+    image: timescale/timescaledb:2.31.0-pg17
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_DB: fuel
+      POSTGRES_PASSWORD_FILE: /run/secrets/fuel_db_password
+      TS_TUNE_NUM_CPUS: "2"
+    secrets:
+      - fuel_db_password
+      - fuel_db_trino_password
+    volumes:
+      - fuel_db_data:/var/lib/postgresql/data
+      # A single file, not the folder: the image's own TimescaleDB init scripts
+      # live in the same directory and must stay visible.
+      - ./fuel-db/init/01-roles.sh:/docker-entrypoint-initdb.d/010_petrolyst_roles.sh:ro
+    networks:
+      - backend
+      - fuel-db-tunnel
+    # Loopback only, for `ssh -L 5433:127.0.0.1:5433 petrolyst`.
+    ports:
+      - "127.0.0.1:5433:5432"
+    restart: unless-stopped
+    mem_limit: 1536m
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres -d fuel"]
+      interval: 10s
+      timeout: 5s
+      retries: 10
+
+networks:
+  backend:
+    internal: true
+  proxy:
+    external: true
+  # A port cannot be published from an internal network; this one exists only
+  # so fuel-db's loopback port works.
+  fuel-db-tunnel: {}
+
+volumes:
+  superset_db_data:
+  fuel_db_data:
+
+secrets:
+  superset_secret_key:
+    file: ${PETROLYST_ROOT:-/opt/petrolyst}/secrets/fuel-monitoring/superset_secret_key
+  superset_db_password:
+    file: ${PETROLYST_ROOT:-/opt/petrolyst}/secrets/fuel-monitoring/superset_db_password
+  fuel_db_password:
+    file: ${PETROLYST_ROOT:-/opt/petrolyst}/secrets/fuel-monitoring/fuel_db_password
+  fuel_db_trino_password:
+    file: ${PETROLYST_ROOT:-/opt/petrolyst}/secrets/fuel-monitoring/fuel_db_trino_password
+  keycloak_petrolyst_client_secret:
+    file: ${PETROLYST_ROOT:-/opt/petrolyst}/secrets/shared/keycloak_petrolyst_client_secret
diff --git a/stacks/fuel-monitoring/fuel-db/init/01-roles.sh b/stacks/fuel-monitoring/fuel-db/init/01-roles.sh
new file mode 100755
index 0000000..495c272
--- /dev/null
+++ b/stacks/fuel-monitoring/fuel-db/init/01-roles.sh
@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+# Runs once, when the fuel-db volume is first initialised (mounted after the
+# image's own TimescaleDB scripts, as 010_petrolyst_roles.sh).
+#   fuel_owner  owns database "fuel", its public schema and every table in it.
+#               Loaders log in as their own role but act as fuel_owner (README
+#               "Data loaders"): the default privileges below cover only what
+#               fuel_owner itself creates, not what its members create.
+#   trino_ro    what Trino connects as: read-only, also on tables created later.
+set -euo pipefail
+
+trino_password=$(cat /run/secrets/fuel_db_trino_password)
+
+psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" \
+  -v trino_password="$trino_password" <<'SQL'
+CREATE ROLE fuel_owner NOLOGIN;
+ALTER DATABASE fuel OWNER TO fuel_owner;
+REVOKE CREATE ON SCHEMA public FROM PUBLIC;
+
+CREATE ROLE trino_ro LOGIN PASSWORD :'trino_password';
+GRANT CONNECT ON DATABASE fuel TO trino_ro;
+GRANT USAGE ON SCHEMA public TO trino_ro;
+GRANT SELECT ON ALL TABLES IN SCHEMA public TO trino_ro;
+ALTER DEFAULT PRIVILEGES FOR ROLE fuel_owner IN SCHEMA public
+  GRANT SELECT ON TABLES TO trino_ro;
+SQL
diff --git a/stacks/fuel-monitoring/superset/Dockerfile b/stacks/fuel-monitoring/superset/Dockerfile
new file mode 100644
index 0000000..a40a08b
--- /dev/null
+++ b/stacks/fuel-monitoring/superset/Dockerfile
@@ -0,0 +1,28 @@
+# Petrolyst Superset image. Deployment only: every customization is copied from
+# petrolyst-insights/, which compose.yaml passes as the named build context
+# "insights". deploy/deploy.sh tags the result with a hash of exactly these
+# inputs (this file plus what is copied below), so the tag changes only when
+# the image would.
+FROM apache/superset:6.1.0@sha256:16b50bbef6648912a79e3293d418fefa743ce555d36c5af6b85d859119ed7f88
+
+USER root
+# The 6.1.0 image ships neither an OAuth client nor the Postgres and Trino
+# drivers.
+RUN uv pip install --no-cache --python /app/.venv/bin/python \
+      authlib==1.9.1 psycopg2-binary==2.9.13 "trino[sqlalchemy]==0.340.0"
+
+COPY --from=insights --chown=superset:superset superset_config.py petrolyst_security.py /app/pythonpath/
+COPY --from=insights --chown=superset:superset assets/branding/ /app/superset/static/assets/branding/
+COPY --from=insights patches/ /app/patches/petrolyst/
+# Stop at the first patch or verify that fails, so a later success cannot hide
+# an earlier failure.
+RUN for p in /app/patches/petrolyst/fix_*.py; do \
+      [ -e "$p" ] || continue; \
+      { python3 "$p" && python3 "$p" --verify; } || exit 1; \
+    done
+
+# Deployment, not customization: in the image (and so in the tag) rather than
+# bind-mounted, so a change to it makes deploy.sh run superset-init again.
+COPY init.sh /app/petrolyst-init.sh
+
+USER superset
diff --git a/stacks/fuel-monitoring/superset/init.sh b/stacks/fuel-monitoring/superset/init.sh
new file mode 100755
index 0000000..d7bd43e
--- /dev/null
+++ b/stacks/fuel-monitoring/superset/init.sh
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+# superset-init: migrate the metadata database, sync roles and permissions, and
+# register the Trino connection. It is copied into the Superset image, so a
+# change here changes the image tag; deploy/deploy.sh runs it on a fresh install
+# and whenever that tag changes. Every step is idempotent. Unlike the
+# upstream docker-init.sh it never creates a local admin: users come from
+# Keycloak.
+set -euo pipefail
+
+superset db upgrade
+superset init
+superset set-database-uri \
+  --database_name "Fuel (Trino)" \
+  --uri "trino://superset@trino:8080/fuel"
diff --git a/stacks/fuel-monitoring/trino/etc/access-control.properties b/stacks/fuel-monitoring/trino/etc/access-control.properties
new file mode 100644
index 0000000..e89d523
--- /dev/null
+++ b/stacks/fuel-monitoring/trino/etc/access-control.properties
@@ -0,0 +1,3 @@
+# Analytics never writes through Trino. fuel-db's trino_ro role is read-only as
+# well; this is the second lock.
+access-control.name=read-only
diff --git a/stacks/fuel-monitoring/trino/etc/catalog/fuel.properties b/stacks/fuel-monitoring/trino/etc/catalog/fuel.properties
new file mode 100644
index 0000000..b616468
--- /dev/null
+++ b/stacks/fuel-monitoring/trino/etc/catalog/fuel.properties
@@ -0,0 +1,5 @@
+# The fuel-monitoring operational store (service fuel-db), read-only.
+connector.name=postgresql
+connection-url=jdbc:postgresql://fuel-db:5432/fuel
+connection-user=trino_ro
+connection-password=${ENV:FUEL_DB_TRINO_PASSWORD}
diff --git a/stacks/fuel-monitoring/trino/etc/config.properties b/stacks/fuel-monitoring/trino/etc/config.properties
new file mode 100644
index 0000000..0272ab3
--- /dev/null
+++ b/stacks/fuel-monitoring/trino/etc/config.properties
@@ -0,0 +1,14 @@
+# Single node: coordinator and worker in one process. Reachable only on the
+# backend network (Superset); no port is published and Traefik has no route.
+coordinator=true
+node-scheduler.include-coordinator=true
+http-server.http.port=8080
+discovery.uri=http://localhost:8080
+catalog.management=static
+
+# Memory bounds. The container is capped at 3g (compose.yaml) and jvm.config
+# gives the heap 75 % of it (~2.25 GB); 1 GB for queries plus 512 MB headroom
+# leaves room for the rest of the heap.
+query.max-memory=1GB
+query.max-memory-per-node=1GB
+memory.heap-headroom-per-node=512MB
diff --git a/stacks/fuel-monitoring/trino/etc/jvm.config b/stacks/fuel-monitoring/trino/etc/jvm.config
new file mode 100644
index 0000000..07aef3c
--- /dev/null
+++ b/stacks/fuel-monitoring/trino/etc/jvm.config
@@ -0,0 +1,14 @@
+-server
+-agentpath:/usr/lib/trino/bin/libjvmkill.so
+-XX:InitialRAMPercentage=75
+-XX:MaxRAMPercentage=75
+-XX:G1HeapRegionSize=32M
+-XX:+ExplicitGCInvokesConcurrent
+-XX:+HeapDumpOnOutOfMemoryError
+-XX:+ExitOnOutOfMemoryError
+-XX:-OmitStackTraceInFastThrow
+-XX:ReservedCodeCacheSize=256M
+-XX:PerMethodRecompilationCutoff=10000
+-XX:PerBytecodeRecompilationCutoff=10000
+-Djdk.attach.allowAttachSelf=true
+-Djdk.nio.maxCachedBufferSize=2000000
diff --git a/stacks/fuel-monitoring/trino/etc/log.properties b/stacks/fuel-monitoring/trino/etc/log.properties
new file mode 100644
index 0000000..9f237f0
--- /dev/null
+++ b/stacks/fuel-monitoring/trino/etc/log.properties
@@ -0,0 +1 @@
+io.trino=INFO
diff --git a/stacks/fuel-monitoring/trino/etc/node.properties b/stacks/fuel-monitoring/trino/etc/node.properties
new file mode 100644
index 0000000..238f57b
--- /dev/null
+++ b/stacks/fuel-monitoring/trino/etc/node.properties
@@ -0,0 +1,3 @@
+node.environment=petrolyst
+node.data-dir=/data/trino
+node.id=${ENV:HOSTNAME}
diff --git a/traefik/compose.yaml b/traefik/compose.yaml
new file mode 100644
index 0000000..91e4d67
--- /dev/null
+++ b/traefik/compose.yaml
@@ -0,0 +1,117 @@
+# Edge proxy for the whole server. Deployed first by deploy/deploy.sh, which
+# exports TRAEFIK_CONFIG_HASH from the release's ARTIFACTS file.
+#
+# Any stack joins by attaching a service to the external network "proxy" and
+# setting traefik.* labels; apps without their own login can add the "sso"
+# middleware (Keycloak client petrolyst, role checked by oauth2-proxy).
+name: traefik
+
+services:
+  socket-proxy:
+    image: tecnativa/docker-socket-proxy:v0.5.0
+    environment:
+      CONTAINERS: "1"
+      EVENTS: "1"
+      PING: "1"
+      VERSION: "1"
+      POST: "0"
+      LOG_LEVEL: warning
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+    networks:
+      - socket
+    restart: unless-stopped
+    mem_limit: 64m
+
+  traefik:
+    image: traefik:v3.7.16
+    command: ["--configFile=/etc/traefik/static/traefik.yml"]
+    ports:
+      - "80:80"
+      - "443:443"
+    # Folders, not single files: promotion replaces files by renaming, which a
+    # single-file bind mount would not follow.
+    volumes:
+      - ./static:/etc/traefik/static:ro
+      - ./dynamic:/etc/traefik/dynamic:ro
+      - letsencrypt:/letsencrypt
+    depends_on:
+      - socket-proxy
+    networks:
+      - proxy
+      - socket
+    restart: unless-stopped
+    mem_limit: 256m
+    healthcheck:
+      test: ["CMD", "traefik", "healthcheck", "--configFile=/etc/traefik/static/traefik.yml"]
+      interval: 10s
+      timeout: 5s
+      retries: 6
+    labels:
+      petrolyst.config-hash: ${TRAEFIK_CONFIG_HASH:?TRAEFIK_CONFIG_HASH unset - run through deploy/deploy.sh}
+      traefik.enable: "true"
+      traefik.http.routers.dashboard.rule: Host(`${TRAEFIK_HOST:-traefik.petrolyst.com}`)
+      traefik.http.routers.dashboard.entrypoints: websecure
+      traefik.http.routers.dashboard.tls.certresolver: le
+      traefik.http.routers.dashboard.service: api@internal
+      traefik.http.routers.dashboard.middlewares: sso,secure-headers@file
+      # Keycloak gate for the dashboard host only (cookie, return hosts and
+      # role are tied to it; README "Adding a project"): unauthenticated
+      # requests are sent to Keycloak, users without petrolyst:traefik-admin
+      # get 403.
+      traefik.http.middlewares.sso.forwardauth.address: http://oauth2-proxy:4180/
+      traefik.http.middlewares.sso.forwardauth.trustForwardHeader: "true"
+      traefik.http.middlewares.sso.forwardauth.authResponseHeaders: X-Auth-Request-User,X-Auth-Request-Email
+
+  oauth2-proxy:
+    image: quay.io/oauth2-proxy/oauth2-proxy:v7.15.5
+    command:
+      - --provider=keycloak-oidc
+      - --oidc-issuer-url=${KEYCLOAK_REALM_URL:-https://iam.thedigitalbridge.io/realms/thedigitalbridge}
+      - --client-id=petrolyst
+      - --client-secret-file=/run/secrets/keycloak_petrolyst_client_secret
+      - --cookie-secret-file=/run/secrets/oauth2_proxy_cookie_secret
+      - --code-challenge-method=S256
+      - --allowed-role=petrolyst:traefik-admin
+      # Required by oauth2-proxy at startup; access is decided by the role above.
+      - --email-domain=*
+      - --redirect-url=https://${TRAEFIK_HOST:-traefik.petrolyst.com}/oauth2/callback
+      - --whitelist-domain=${TRAEFIK_HOST:-traefik.petrolyst.com}
+      - --cookie-domain=${TRAEFIK_HOST:-traefik.petrolyst.com}
+      - --cookie-secure=true
+      - --cookie-samesite=lax
+      - --reverse-proxy=true
+      - --upstream=static://202
+      - --skip-provider-button=true
+      - --set-xauthrequest=true
+      - --http-address=0.0.0.0:4180
+    secrets:
+      - keycloak_petrolyst_client_secret
+      - oauth2_proxy_cookie_secret
+    networks:
+      - proxy
+    restart: unless-stopped
+    mem_limit: 128m
+    labels:
+      traefik.enable: "true"
+      traefik.docker.network: proxy
+      traefik.http.routers.oauth2.rule: Host(`${TRAEFIK_HOST:-traefik.petrolyst.com}`) && PathPrefix(`/oauth2/`)
+      traefik.http.routers.oauth2.entrypoints: websecure
+      traefik.http.routers.oauth2.tls.certresolver: le
+      traefik.http.routers.oauth2.middlewares: secure-headers@file
+      traefik.http.services.oauth2.loadbalancer.server.port: "4180"
+
+networks:
+  proxy:
+    external: true
+  socket:
+    internal: true
+
+volumes:
+  letsencrypt:
+
+secrets:
+  keycloak_petrolyst_client_secret:
+    file: ${PETROLYST_ROOT:-/opt/petrolyst}/secrets/shared/keycloak_petrolyst_client_secret
+  oauth2_proxy_cookie_secret:
+    file: ${PETROLYST_ROOT:-/opt/petrolyst}/secrets/traefik/oauth2_proxy_cookie_secret
diff --git a/traefik/dynamic/middlewares.yml b/traefik/dynamic/middlewares.yml
new file mode 100644
index 0000000..334df57
--- /dev/null
+++ b/traefik/dynamic/middlewares.yml
@@ -0,0 +1,10 @@
+http:
+  middlewares:
+    # Response headers for every public router (reference as secure-headers@file).
+    secure-headers:
+      headers:
+        stsSeconds: 31536000
+        contentTypeNosniff: true
+        referrerPolicy: strict-origin-when-cross-origin
+        customFrameOptionsValue: SAMEORIGIN
+        permissionsPolicy: "camera=(), microphone=(), geolocation=()"
diff --git a/traefik/dynamic/tls.yml b/traefik/dynamic/tls.yml
new file mode 100644
index 0000000..047cd22
--- /dev/null
+++ b/traefik/dynamic/tls.yml
@@ -0,0 +1,7 @@
+# Applies to every router: TLS 1.2 or newer (Exhibit B), and no certificate for
+# requests that do not name one of our hosts.
+tls:
+  options:
+    default:
+      minVersion: VersionTLS12
+      sniStrict: true
diff --git a/traefik/static/traefik.yml b/traefik/static/traefik.yml
new file mode 100644
index 0000000..84295d6
--- /dev/null
+++ b/traefik/static/traefik.yml
@@ -0,0 +1,56 @@
+# Traefik static configuration: the server-wide edge for every stack under
+# stacks/. Changing anything in static/ changes TRAEFIK_CONFIG_HASH, so deploy.sh
+# recreates the container; ../dynamic/ is watched and applies without a restart.
+global:
+  checkNewVersion: false
+  sendAnonymousUsage: false
+
+entryPoints:
+  web:
+    address: ":80"
+    http:
+      redirections:
+        entryPoint:
+          to: websecure
+          scheme: https
+          permanent: true
+  websecure:
+    address: ":443"
+  # Internal only (not published): serves /ping for the healthcheck.
+  traefik:
+    address: ":8080"
+
+certificatesResolvers:
+  le:
+    acme:
+      # No e-mail: Let's Encrypt no longer sends expiry mail, and renewal is
+      # automatic. deploy.sh checks the certificates on every deploy.
+      storage: /letsencrypt/acme.json
+      httpChallenge:
+        entryPoint: web
+
+# The dashboard is served at traefik.petrolyst.com through api@internal, behind
+# Keycloak (labels on the traefik service in compose.yaml). No insecure port.
+api:
+  dashboard: true
+
+ping:
+  entryPoint: traefik
+
+providers:
+  docker:
+    # Through docker-socket-proxy (read-only container listing and events);
+    # Traefik never mounts the Docker socket itself.
+    endpoint: tcp://socket-proxy:2375
+    exposedByDefault: false
+    network: proxy
+  file:
+    directory: /etc/traefik/dynamic
+    watch: true
+
+log:
+  level: INFO
+  format: json
+
+accessLog:
+  format: json