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Move the db off the bitnami-era pgvector:pg17 + hand-rolled pg_upgrade entrypoint to discourse/postgres:pg18 (pgvector + discourse's auto-upgrade layer). The image runs the in-place major-version pg_upgrade itself on boot; the recipe configures it via env: - a small inline entrypoint injects the db password secret into $DB_PASSWORD (the image expects it in the env, no *_FILE support) - POSTGRES_USER (the install user pg_upgrade must match) defaults to 'postgres' -- correct for fresh installs and bitnami-origin clusters -- overridable from .env - POSTGRES_INITDB_ARGS=--no-data-checksums so the new pg18 cluster matches pre-18 clusters (pg18 initdb enables checksums by default; pg_upgrade needs a match) - mount postgresql_data at /var/lib/postgresql (versioned PGDATA .../18/docker) - pg_backup.sh uses POSTGRES_USER for the dump/drop/recreate; fix paths - document the POSTGRES_USER override in .env.sample, README and the release note - drop entrypoint.postgres.sh.tmpl Tested on cctest: pg17->pg18 upgrade preserves data and serves over HTTPS; fresh install works; backup+restore round-trips.
76 lines
2.9 KiB
Markdown
76 lines
2.9 KiB
Markdown
# Discourse
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[](https://build.coopcloud.tech/coop-cloud/discourse)
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A platform for community discussion
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<!-- metadata -->
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* **Category**: Apps
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* **Status**: 3, experimental
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* **Image**: [`discourse/discourse`](https://hub.docker.com/r/discourse/discourse), 4, upstream
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* **Healthcheck**: yes
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* **Backups**: yes
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* **Email**: yes
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* **Tests**: yes
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* **SSO**: no
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<!-- endmetadata -->
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> **Note**: this recipe runs the official, **experimental** `discourse/discourse`
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> image. Upstream does not yet recommend it for production — see
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> <https://meta.discourse.org/t/380646>. Use with care.
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## Basic usage
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1. Set up Docker Swarm and [`abra`]
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2. Deploy [`coop-cloud/traefik`]
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3. `abra app new discourse --secrets`
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4. `abra app config YOURAPPDOMAIN` — set `DOMAIN` and `DISCOURSE_DEVELOPER_EMAILS`
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5. `abra app deploy YOURAPPDOMAIN`
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6. Open the configured domain in your browser to finish set-up. The first account
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that registers with an address listed in `DISCOURSE_DEVELOPER_EMAILS` becomes
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an admin.
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[`abra`]: https://docs.coopcloud.tech/abra/
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[`coop-cloud/traefik`]: https://git.coopcloud.tech/coop-cloud/traefik
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The app serves plain HTTP on port 80; Traefik terminates TLS in front of it. The
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image's built-in nginx/Let's Encrypt is disabled by the recipe (`install-ssl`
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override) so it works behind the reverse proxy.
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## Add an admin user
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```
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abra app run YOURAPPDOMAIN app discourse admin create
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```
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## Postgres major version upgrades
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Handled automatically by the [`discourse/postgres`] image (pgvector + an
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auto-upgrade layer). On deploy it finds an older cluster, installs the old
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binaries and runs `pg_upgrade` into the new versioned data directory. No manual
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dump/restore needed.
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`pg_upgrade` must run as the old cluster's bootstrap superuser (its "install
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user"). The recipe uses `POSTGRES_USER`, which defaults to `postgres` — the right
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value for fresh installs and for clusters that came from the old bitnami recipe.
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If your cluster was bootstrapped with a different superuser (e.g. `discourse`),
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set `POSTGRES_USER` in the app `.env` before upgrading, otherwise `pg_upgrade`
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will refuse with an install-user mismatch.
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[`discourse/postgres`]: https://github.com/discourse/discourse-postgres
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## Migrating from the previous (bitnami) recipe
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The official image stores uploads under `/shared` rather than bitnami's
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`/bitnami/discourse`. On first boot the recipe copies uploads + backups from the
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old bitnami volume (mounted read-only at `/legacy`) into `/shared`, once,
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idempotently. The Postgres database is reused as-is. After a successful migration
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a later recipe version will drop the transitional `/legacy` mount.
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If you are upgrading from the bitnami recipe, also remove the now-unused sidekiq
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service that swarm leaves behind (sidekiq runs inside the app container now):
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```
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docker service rm YOURSTACK_sidekiq
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```
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