A very simple image that makes dumps from a Postgres service using pg_backup_rotated.sh, to be used in conjunction with a backup service. Docker hub repository.
In your docker-compose.yml:
services:
...
# PostGIS database.
dbservice:
image: mdillon/postgis:9.6-alpine
volumes:
- database:/var/lib/postgresql/data/
restart: unless-stopped
# add the pgdumper service
pgdumper:
build: ./pgdumper/
volumes:
- pgdumps:/pgdumps/
environment:
- HOSTNAME=dbservice
restart: unless-stopped
# volumes definition
volumes:
...
pgdumps:Set HOSTNAME to the name of your postgres service.
The options are described in the original pg_backup.config file below. All these settings can be set using environment variables.
Additionnaly, you can provide a password (if needed) with the PGPASSWORD env var.
# taken from pg_backup.config
##############################
## POSTGRESQL BACKUP CONFIG ##
##############################
# Optional system user to run backups as. If the user the script is running as doesn't match this
# the script terminates. Leave blank to skip check.
BACKUP_USER=
# Optional hostname to adhere to pg_hba policies. Will default to "localhost" if none specified.
HOSTNAME=postgres
# Optional username to connect to database as. Will default to "postgres" if none specified.
USERNAME=postgres
# This dir will be created if it doesn't exist. This must be writable by the user the script is
# running as.
BACKUP_DIR=/pgdumps/
# List of strings to match against in database name, separated by space or comma, for which we only
# wish to keep a backup of the schema, not the data. Any database names which contain any of these
# values will be considered candidates. (e.g. "system_log" will match "dev_system_log_2010-01")
SCHEMA_ONLY_LIST="postgres"
# Will produce a custom-format backup if set to "yes"
ENABLE_CUSTOM_BACKUPS=yes
# Will produce a gzipped plain-format backup if set to "yes"
ENABLE_PLAIN_BACKUPS=yes
#### SETTINGS FOR ROTATED BACKUPS ####
# Which day to take the weekly backup from (1-7 = Monday-Sunday)
DAY_OF_WEEK_TO_KEEP=5
# Number of days to keep daily backups
DAYS_TO_KEEP=7
# How many weeks to keep weekly backups
WEEKS_TO_KEEP=5
######################################
- 0.1.1 : create the backup directory to avoid failure if it does not exist
- 0.1 : creates a "latest" dump (so you can restore latest version from a constant path)
- 0.0.1 : initial release
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