Backup/Restore a dockerized PostgreSQL database
cat db.dump | docker exec ...
way didn't work for my dump (~2Gb). It took few hours and ended up with out-of-memory error.
Instead, I cp'ed dump into container and pg_restore'ed it from within.
Assuming that container id is CONTAINER_ID
and db name is DB_NAME
:
# copy dump into container
docker cp local/path/to/db.dump CONTAINER_ID:/db.dump
# shell into container
docker exec -it CONTAINER_ID bash
# restore it from within
pg_restore -U postgres -d DB_NAME --no-owner -1 /db.dump
I think you can also use a postgres backup container which would backup your databases within a given time duration.
pgbackups:
container_name: Backup
image: prodrigestivill/postgres-backup-local
restart: always
volumes:
- ./backup:/backups
links:
- db:db
depends_on:
- db
environment:
- POSTGRES_HOST=db
- POSTGRES_DB=${DB_NAME}
- POSTGRES_USER=${DB_USER}
- POSTGRES_PASSWORD=${DB_PASSWORD}
- POSTGRES_EXTRA_OPTS=-Z9 --schema=public --blobs
- SCHEDULE=@every 0h30m00s
- BACKUP_KEEP_DAYS=7
- BACKUP_KEEP_WEEKS=4
- BACKUP_KEEP_MONTHS=6
- HEALTHCHECK_PORT=81
Backup your databases
docker exec -t your-db-container pg_dumpall -c -U postgres > dump_`date +%d-%m-%Y"_"%H_%M_%S`.sql
Restore your databases
cat your_dump.sql | docker exec -i your-db-container psql -U postgres
Backup Database
generate sql:
docker exec -t your-db-container pg_dumpall -c -U your-db-user > dump_$(date +%Y-%m-%d_%H_%M_%S).sql
to reduce the size of the sql you can generate a compress:
docker exec -t your-db-container pg_dumpall -c -U your-db-user | gzip > ./dump_$(date +"%Y-%m-%d_%H_%M_%S").gz
Restore Database
cat your_dump.sql | docker exec -i your-db-container psql -U your-db-user -d your-db-name
to restore a compressed sql:
gunzip < your_dump.sql.gz | docker exec -i your-db-container psql -U your-db-user -d your-db-name
PD: this is a compilation of what worked for me, and what I got from here and elsewhere. I am beginning to make contributions, any feedback will be appreciated.