Backup/Restore a dockerized PostgreSQL database
I’m trying to backup/restore a PostgreSQL database as is explained on the Docker website, but the data is not restored. The volumes used by the database image are: VOLUME [”/etc/postgresql”, ”/v…
Stack OverflowCarl Levasseur

Backup your databases

docker exec -t your-db-container pg_dumpall -c -U postgres > dump_`date +%Y-%m-%d"_"%H_%M_%S`.sql
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Creates filename like dump_2023-12-25_09_15_26.sql

If you want a smaller file size, use gzip:

docker exec -t your-db-container pg_dumpall -c -U postgres | gzip > dump_`date +%Y-%m-%d"_"%H_%M_%S`.sql.gz
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If you want even smaller file sizes use brotli or bzip2:

docker exec -t your-db-container pg_dumpall -c -U postgres | brotli --best > dump_`date +%Y-%m-%d"_"%H_%M_%S`.sql.br
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or

docker exec -t your-db-container pg_dumpall -c -U postgres | bzip2 --best > dump_`date +%Y-%m-%d"_"%H_%M_%S`.sql.bz2
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Restore your databases

cat your_dump.sql | docker exec -i your-db-container psql -U postgres
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