# Upgrading

## Upgrading to 2.0.0 from 1.x

**2.0.0 needs a fresh database.** It starts from a new schema baseline. Pointed at a 1.x
database it refuses to start with:

```
database schema predates Beacon 2.0.0; 2.0.0 needs a fresh database
```

1.x history does not carry over. For the all-in-one stack, in this order:

**1. Stop the stack and keep a copy of everything you edited.**

```bash
docker compose down
cp -r ../docker-deployment-type1 ../docker-deployment-type1.bak   # .env, config.yaml, Caddy files, blocklist
```

**2. Update the deployment files.** If the folder is a git clone, `git pull` will refuse
because the 1.x layout tracked `.env` and you edited `docker-compose.yml`:

```bash
git checkout -- . && git pull
```

Then put your own files back from the copy: `.env`, `data/app/config.yaml`, and anything you
changed under `data/Caddy/`. Do not copy `docker-compose.yml` back; re-apply your
`POSTGRES_PASSWORD` to the new one instead.

**3. Fix the database names.** The user and database are called `beacon` now, not `tower`.
In `.env`, change both in `POSTGRES_DSN` (`postgres://beacon:...@db:5432/beacon`). The new
`docker-compose.yml` already uses `beacon`. The names only have to agree with each other, so
if you have already initialised a 2.0.0 database under `tower`, either keep `tower` in both
places or move that data directory away as well.

**4. Move the 1.x database away and start.** Postgres only creates the user and database on
an empty data directory, so do this after step 3, not before:

```bash
mv data/postgres data/postgres-1.x   # or rm -rf data/postgres once you no longer need it
docker compose pull
docker compose up -d
```

`docker compose down` also lets the network come back with the new fixed subnet. If
`172.30.0.0/24` is already used on your host, pick another in `docker-compose.yml` and change
`server.trusted_proxies` in `data/app/config.yaml` to match.

Config that **stops startup** if left as it was:

- Every manual `scopes:` entry needs `region:` set to one of your `regions:` slugs.
- MeshMapper refresh intervals must be within bounds: `meshmapper.scopes.refresh_interval` 1h
  to 24h, `meshmapper.zones.refresh_interval` and `meshmapper.channels.refresh_interval` 24h to
  168h.
- `packets.retention` and `analytics.rollup_retention` must be at least `24h`.
- `server.trusted_proxies` entries must be CIDRs (`10.0.0.5/32`, not `10.0.0.5`).

Other changes to review:

- `meshmapper.scopes.sources` is ignored, with a warning. Scope catalogues are now found
  through MeshMapper's zone list for every known IATA.
- **REST rate limiting is on by default:** 300 requests per minute per client IP on
  `/api/v1/*` (IPv6 clients share a /64), answered with `429` and `Retry-After`. Behind a
  proxy, set `server.trusted_proxies` and have the proxy send `X-Real-IP` (see
  [Reverse proxy](reverse-proxy.md)); `X-Forwarded-For` and `True-Client-IP` are not trusted.
  Tune or turn it off under `ratelimit:`.
- **WebSocket upgrades are rate limited** to `websocket.max_connects_per_minute` (default 10)
  per client IP, on top of `max_connections_per_ip` (default 5). Only the page's own host may
  open `/ws` unless you list other origins in `websocket.allowed_origins`, for example when the
  web app is served from a different host than the API.
- `packets.retention` now defaults to **7 days** and also covers observations and channel
  messages. Historical stats come from hourly rollups kept for `analytics.rollup_retention`
  (90 days).
- Admin endpoints under `/api/v1/admin/` need `BEACON_API_KEY` (or `auth.api_key`).
- Image tags: `latest` is the newest stable release from `main`. Pin `:2.0` on both images if
  you want to choose when to move to the next minor release.

[`app_config/config.yaml.example`](../app_config/config.yaml.example) is the full 2.0.0
reference.

## Routine upgrades

Pin both images to the same release line in `docker-compose.yml` (see
[Image tags](releases.md#image-tags)), then:

```bash
docker compose pull
docker compose up -d
```

Database migrations run when the server starts. Read the release notes first; a release that
needs a config change says so there. Keep server and web on the same `X.Y`.

Since server 2.0.4, a server can require a minimum Beacon Web version (`minWebVersion` at
`GET /api/v1/info`; see `web.min_web_version` in [Configuration](configuration.md)). An older web
build shows a "reload" screen instead of the app, so pull the web image together with the server.

## MeshMapper API authentication rollout

When upgrading to a Beacon build with MeshMapper API authentication, configure the key
before relying on imports. Ask your local MeshMapper regional or grouped-region admin
for a key covering the required APIs and your region or all member regions. Confirm
MeshMapper Server supports `X-API-Key` before enforcement; see
[MeshMapper API key](configuration.md#meshmapper-api-key) for the rollout details.

Set `MESHMAPPER_API_KEY` in the backend `.env`, then recreate the `app` container:

```bash
docker compose up -d --force-recreate app
```

Without a key, Beacon keeps running and retains saved imports, but MeshMapper refreshes
are unconfigured. Existing IP exemptions are not a substitute for a key. After configuring
one, check the MeshMapper logs for successful refreshes; existing backoff still applies.
If you use backups, leave `meshmapper.api_key` empty in the saved YAML and keep the key in
the environment. Exports refuse a nonempty saved YAML key.

## REST rate limit raised to 600

Newer builds default `ratelimit.requests_per_minute` (and `burst`) to 600 a minute instead
of 300. Opening the Map and Nodes tabs on a region of a few thousand nodes could run past
300 and leave the map half loaded. The shipped `config.yaml` templates set the value
explicitly, so an existing deployment keeps 300 until you change it:

```yaml
ratelimit:
  enabled: true
  requests_per_minute: 600
  burst: 600
```

Then run `docker compose restart app`. If you run the [fail2ban jails](../app_config/fail2ban/README.md),
the flood jail's `maxretry` of 900 still sits above the new limit.

## Upgrading to 2.1

Server 2.1.0 adds exact page cursors (`nextPageCursor` and `pageCursor`) to `/packets`, `/nodes`
and `/observers`; see [Exact page cursors](api-contract.md#exact-page-cursors). The change is
additive and the minimum web and app versions stay where they were, so older clients keep
working. Pull Beacon Web 2.1 with the server.

Migrations `025` to `033` add two checks, four indexes and a statistics object to `packets`.
Before deploying, run the [pre-deploy check](operations.md#before-deploying-a-release) and the
type check in the same section. A large deployment can pre-build the four indexes off-peak; see
[Pre-building the packets indexes](operations.md#pre-building-the-packets-indexes). Other
deployments can skip that: the server builds them at startup and serves the API once they are
done.

## Observer adverts index and payload-type backfill

The release that adds migration `034` changes no API and keeps the minimum web and app versions.
On a large deployment, pre-build `idx_observations_adverts` off-peak before deploying; see
[Pre-building the observer adverts index](operations.md#pre-building-the-observer-adverts-index).
Other deployments can skip that: the server builds it at startup.

After the deploy, a background job fills in missing observation payload types; on a large
deployment it takes about 80 minutes. Until it reports done, observer adverts pages use the
previous release's statement. See
[After upgrading: observation payload types](operations.md#after-upgrading-observation-payload-types),
which also shows how to mark it done by hand. Five stats and traces statements move to the
`api_custom` pool; see
[After upgrading: stats and traces on the custom pool](operations.md#after-upgrading-stats-and-traces-on-the-custom-pool).

- Turn on the [daily plan check](operations.md#turning-on-the-daily-check) only after migration
  `034` is recorded.
- Don't upgrade to a release that drops `idx_observations_observer_id` until
  `SELECT value FROM background_state WHERE key = 'observation_payload_type'` shows
  `"done": true`. Before then the previous adverts statement still runs and needs that index.
- To roll back, deploy the previous image. See the rollback notes in the two operations
  sections above.

## Channel messages by site

The release that adds migrations `035` to `041` changes no API and keeps the minimum web and app
versions. It adds `channel_message_iatas`, a read model that channel message pages filtered by
`iatas` or `scope` read once the server trusts it. Run the
[pre-deploy check](operations.md#before-deploying-a-release) first. No pre-build is needed: the
new indexes build at startup in well under a second.

After the deploy, the server fills the table in the background and verifies it once; on a large
deployment that takes 3 to 5 minutes. Until the log shows
`cmi trusted: region and scope message pages read channel_message_iatas`, every page is served by
the previous release's statements, so users see no change. See
[Read models: channel messages by site](operations.md#read-models-channel-messages-by-site) for
what to watch, the metrics and alerts, and how read-only servers decide.

- To turn it off without rolling back, set `readmodels.cmi.enabled: false` and restart; see
  [Configuration](configuration.md#read-models).
- To roll back, deploy the previous image. Rolling forward again later repairs the table at
  startup before any page reads it; nothing to do by hand.
- Run this release for at least a week before upgrading to the release that drops
  `idx_channel_messages_channel` and `idx_channel_messages_sent_brin`.

## Packets by site

The release that adds migrations `042` to `045` adds `packet_sites`, a read model that `/packets`
pages filtered by `iatas`, `iata`, `region` or `regionId` read once the server trusts it. It
keeps the minimum web and app versions. Those pages gain `nextPageCursor`, which current web and
app versions already send back as `pageCursor`; see
[Exact page cursors](api-contract.md#exact-page-cursors). Run the
[pre-deploy check](operations.md#before-deploying-a-release) first: migration `042` takes a brief
lock on `packets`. No pre-build is needed: the new indexes build on an empty table in seconds.

After the deploy, the server fills the table in the background and verifies it once; on a large
deployment expect roughly 5 to 20 minutes and a few GB of WAL, then a few minutes of
`VACUUM (ANALYZE)`. Until the log shows
`packet_sites trusted: region packet pages read packet_sites`, every region page is served by
the previous release's statement, so users see no change. See
[Read models: packets by site](operations.md#read-models-packets-by-site) for what to watch, the
metrics and alerts, and how read-only servers decide.

- Each stored observation now costs about 15-21% more insert time and 37-53% more WAL. After
  the deploy, compare `InsertObservation` in `pg_stat_statements` for the hour before and after
  and watch `beacon_ingest_queue_depth`; see
  [Ingest cost](operations.md#ingest-cost). A growing queue or WAL beyond your budget means
  rolling back.
- To turn it off without rolling back, set `readmodels.packet_sites.enabled: false` and
  restart; see [Configuration](configuration.md#read-models).
- To roll back, deploy the previous image. Rolling forward again later repairs the table at
  startup before any region page reads it; nothing to do by hand.

## Changes that need a restart

Beacon reads `config.yaml` once at startup. After editing it, run
`docker compose restart app`. On the next start:

- A newly added channel key decrypts the matching stored messages. Look for
  `config: backfilled N previously-undecrypted channel message(s)` in the log.
- Border file and MeshMapper import changes take effect.
- Changed admin or MeshMapper keys in the YAML file are picked up.

For environment changes in `.env`, use `docker compose up -d --force-recreate app` instead.
A container restart reuses its old environment.

The one runtime-only setting is CORS origins: `PUT /api/v1/admin/config` changes them without a
restart, and nothing is written to the file, so a restart reloads whatever the file says.