Merge branch 'add-db-backup-restore' into 'master'

Added database backup and restore section.

Closes uis/devops/grails-application-ansible-deployment#11

See merge request !101

docs/notes/ucs-dev-group-services.md

@@ -143,3 +143,24 @@ to:
 Restart Tomcat:
 
 `service tomcat6 restart`
+
+## Database backup and restore on UCS dev group services
+
+Examples, refer to Lookup service (`ucs-ibis` package) and need substituting as
+appropriate.
+
+Database backups and restores are managed by a pair of scripts in `/usr/share/ibis/bin`, `ibis-backup` and `ibis-restore`.
+
+### Database backups
+
+Generally `ibis-backup` is run from a cronjob `/etc/cron.d/ibis`, which, by passing in an argument `hour|day|week|month|year`, outputs a bzip2 compressed database dump in the `/usr/share/ibis/backup/hour|day|week|month|year` directory.
+The `ibis-backup` script can also take the argument `now` which creates a database dump in the current directory.
+
+### Database restores
+
+The `ibis-restore` script takes a bzip2 compressed backup file which was created by `ibis-backup` and optionally the name of the database to restore to.
+
+`ibis-restore` does not restore to an existing database, if we want to replace an existing database we must do a `DROP DATABASE` first.
+
+
+