Ketrew's Database Backend

Ketrew uses a Postgresql database.

Configuring The Database

The database is configured through the ~database_parameters argument of the function Ketrew.Configuration.engine.

One has to use a “conninfo” URI (cf. documentation).

Ketrew comes with a synchronization tool, see ketrew synchronize --help.

One can copy the data between databases:

ketrew sync --from postresql://127.0.0.1:5432/db1?password=foobar \
            --to postresql://pg@example.com/databasename?password=blabla

Or use “backup” directory trees:

ketrew sync --from postresql://pg@example.com/databasename?password=blabla \
            --to backup://path/to/backup

ketrew sync --from backup://path/to/backup \
            --to  postresql://pg@example.com/databasename?password=blabla

The backup directory contains a few directories, containing each a number of JSON files.