Kanboard uses Sqlite by default to store its data. All tasks, projects and users are stored inside this database.
Technically, the database is just a single file located inside the directory data and named db.sqlite.
Doing a backup is very easy, just copy the file data/db.sqlite somewhere else when nobody use the software.
You can also download at any time the database directly from the settings menu.
The downloaded database is compressed with Gzip, the filename becomes db.sqlite.gz.
There is actually no way to restore the database from the user interface. The restoration must be done manually when no body use the software.
- To restore an old backup, just replace and overwrite the actual file
data/db.sqlite. - To uncompress a gzipped database, execute this command from a terminal
gunzip db.sqlite.gz.
Occasionally, it's possible to optimize the database file by running the command VACUUM.
This command rebuild the entire database and can be used for several reasons:
- Reduce the file size, deleting data produce empty space but doesn't change the file size.
- The database is fragmented due to frequent inserts or updates.
sqlite3 data/db.sqlite 'VACUUM'
Go to the menu settings and click on the link Optimize the database.
For more information, read the Sqlite documentation.