mirror of
https://github.com/prodrigestivill/docker-postgres-backup-local.git
synced 2026-06-05 19:18:00 +00:00
Jonas Thelemann
81 lines
3.3 KiB
Markdown
81 lines
3.3 KiB
Markdown
# postgres-backup-local
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Backup PostgresSQL to the local filesystem with periodic rotating backups, based on [schickling/postgres-backup-s3](https://hub.docker.com/r/schickling/postgres-backup-s3/).
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Backup multiple databases from the same host by setting the database names in `POSTGRES_DB` separated by commas or spaces.
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## Usage
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Docker:
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```sh
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$ docker run -e POSTGRES_HOST=postgres -e POSTGRES_DB=dbname -e POSTGRES_USER=user -e POSTGRES_PASSWORD=password prodrigestivill/postgres-backup-local
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```
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Docker Compose:
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```yaml
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version: '2'
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services:
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postgres:
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image: postgres
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restart: always
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environment:
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- POSTGRES_DB=database
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- POSTGRES_USER=username
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- POSTGRES_PASSWORD=password
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# - POSTGRES_PASSWORD_FILE=/run/secrets/db_password <-- alternative for POSTGRES_PASSWORD (to use with docker secrets)
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pgbackups:
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image: prodrigestivill/postgres-backup-local
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restart: always
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volumes:
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- /var/opt/pgbackups:/backups
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links:
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- postgres
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depends_on:
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- postgres
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environment:
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- POSTGRES_HOST=postgres
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- POSTGRES_DB=database
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- POSTGRES_USER=username
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- POSTGRES_PASSWORD=password
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# - POSTGRES_PASSWORD_FILE=/run/secrets/db_password <-- alternative for POSTGRES_PASSWORD (to use with docker secrets)
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- POSTGRES_EXTRA_OPTS=-Z9 --schema=public --blobs
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- SCHEDULE=@daily
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- BACKUP_KEEP_DAYS=7
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- BACKUP_KEEP_WEEKS=4
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- BACKUP_KEEP_MONTHS=6
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- HEALTHCHECK_PORT=80
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```
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### Environment Variables
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Most variables are the same as in the [official postgres image](https://hub.docker.com/_/postgres/).
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| env variable | description |
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|--|--|
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| POSTGRES_HOST | postgres connection parameter; postgres host to connect to. |
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| POSTGRES_DB | comma or space separated list of postgres databases to backup. |
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| POSTGRES_USER | postgres connection parameter; postgres user to connect with. |
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| POSTGRES_PASSWORD | postgres connection parameter; postgres password to connect with. |
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| POSTGRES_PASSWORD_FILE | alternative to POSTGRES_PASSWORD, useful with docker secrets. |
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| POSTGRES_EXTRA_OPTS | additional options for `pg_dump`. |
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| SCHEDULE | [cron-schedule](http://godoc.org/github.com/robfig/cron#hdr-Predefined_schedules) specifying the interval between postgres backups. |
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| BACKUP_KEEP_DAYS | number of daily backups to keep before removal. |
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| BACKUP_KEEP_WEEKS | number of weekkly backups to keep before removal. |
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| BACKUP_KEEP_MONTHS | number of monthly backups to keep before removal. |
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| HEALTHCHECK_PORT | Port listening for cron-schedule health check. |
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### Manual Backups
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By default this container makes daily backups, but you can start a manual backup by running `/backup.sh`:
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```sh
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$ docker run -e POSTGRES_HOST=postgres -e POSTGRES_DB=dbname -e POSTGRES_USER=user -e POSTGRES_PASSWORD=password prodrigestivill/postgres-backup-local /backup.sh
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```
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### Automatic Periodic Backups
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You can change the `SCHEDULE` environment variable in `-e SCHEDULE="@daily"` to alter the default frequency. Default is `daily`.
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More information about the scheduling can be found [here](http://godoc.org/github.com/robfig/cron#hdr-Predefined_schedules).
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Folders `daily`, `weekly` and `monthly` are created and populated using hard links to save disk space.
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