Restoring a tarball from backup

Restore a previous DSE version from a tarball install.

1. Stop the DSE service if it is running.

   /installation_location/bin/dse cassandra-stop

2. Remove the existing DSE installation directory.

   rm -rf /installation_location/

3. Completely purge any existing data or configuration directories and files.

   sudo rm -rf /var/lib/cassandra
   sudo rm -rf /var/log/cassandra
   sudo rm -rf /var/log/spark ## If using Spark
   sudo rm -rf /var/lib/spark ## If using Spark
   sudo rm -rf /var/lib/dsefs ## If using DSEFS

   Note: The directories above are the default. If you have customized your installation directories, make appropriate adjustments to the paths.
4. Reinstall the old version as described in the documentation for that release of DataStax Enterprise.
   Important: Do not start DSE after installation.
5. Extract your backup to the root of your drive.

   sudo tar -xvf /backup_path/backup_archive_name.tar -C /

6. Move the snapshot files up two levels to their keyspace directories. Replace snapshot_name with the name of the snapshot created during the backup.

   sudo find /var/lib/cassandra/data -mindepth 2 -path '*/snapshots/snapshot_name/*' -type f \
   -exec bash -c 'dir={} && cd ${dir%/*} && mv {} ../..' \;

   Note: The directory above is the default. If you have customized your installation directories, make appropriate adjustments to the path.
   Tip: If you cannot remember the snapshot name, you can find it by browsing the tar archive.
7. Restore permissions.

   sudo chown dse_username:dse_group /var/lib/cassandra

   Note: The directory above is the default. If you have customized your installation directories, make appropriate adjustments to the paths.
8. Start DSE.

   /installation_location/bin/dse cassandra 

9. If you are using DSE Search, rebuild the index (4.5, 4.8, 5.0, 5.1, 6.0, 6.7).