1f77af93bd
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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 $DB_PASSWORD (the image expects it in the env, no *_FILE support) - POSTGRES_USER (the install user pg_upgrade must match) defaults to 'postgres' -- correct for fresh installs and bitnami-origin clusters -- overridable from .env - POSTGRES_INITDB_ARGS=--no-data-checksums so the new pg18 cluster matches pre-18 clusters (pg18 initdb enables checksums by default; pg_upgrade needs a match) - mount postgresql_data at /var/lib/postgresql (versioned PGDATA .../18/docker) - pg_backup.sh uses POSTGRES_USER for the dump/drop/recreate; fix paths - document the POSTGRES_USER override in .env.sample, README and the release note - drop entrypoint.postgres.sh.tmpl Tested on cctest: pg17->pg18 upgrade preserves data and serves over HTTPS; fresh install works; backup+restore round-trips.
48 lines
1.5 KiB
Bash
Executable File
48 lines
1.5 KiB
Bash
Executable File
#!/bin/bash
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# Postgres backup/restore hook for the discourse `db` service (discourse/postgres image).
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set -e
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# dump goes at the volume root so backupbot's backup.sql label finds it
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BACKUP_FILE='/var/lib/postgresql/backup.sql'
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DATADIR="${PGDATA:-/var/lib/postgresql/18/docker}"
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DB_NAME="${POSTGRES_DB:-discourse}"
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# bootstrap superuser for the dump/drop/recreate; same POSTGRES_USER the db service sets
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SU="${POSTGRES_USER:-postgres}"
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function backup {
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pg_dump -U "$SU" "$DB_NAME" | gzip > "$BACKUP_FILE"
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}
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function restore {
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cd "$DATADIR"
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# Block all non-local connections so the running discourse app + sidekiq cannot reconnect and
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# interfere with the drop/recreate/reimport. Restored on exit.
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restore_hba() {
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cat pg_hba.conf.bak > pg_hba.conf
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rm -f pg_hba.conf.bak
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su postgres -c "pg_ctl -D '$DATADIR' reload"
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}
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cp pg_hba.conf pg_hba.conf.bak
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echo 'local all all trust' > pg_hba.conf
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su postgres -c "pg_ctl -D '$DATADIR' reload"
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trap restore_hba EXIT INT TERM
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# terminate any lingering local sessions before recreate
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# see https://stackoverflow.com/questions/5108876/kill-a-postgresql-session-connection
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psql -U "$SU" -d postgres -c \
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"SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname='${DB_NAME}' AND pid<>pg_backend_pid();"
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# drop database and then recreate it
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psql -U "$SU" -d postgres -c "DROP DATABASE ${DB_NAME} WITH (FORCE);"
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createdb -U "$SU" "$DB_NAME"
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# reimport data
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gunzip -c "$BACKUP_FILE" | psql -U "$SU" -d "$DB_NAME" -1 -v ON_ERROR_STOP=1 -f -
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}
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$@
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