single node
nodetool -h 10.10.10.1 snapshot thissnapshotname
cluster wide Cassandra snapshot
clustertool -h 10.10.10.1 global_snapshot thissnapshotname
The snapshoot data are stored in
/var/lib/cassandra/data/mykeyspace/snapshots/timestamp-thissnapshotname/*.db
delete all Cassandra snapshots of a node
nodetool -h 10.10.10.1 clearsnapshot
To delete all Cassandra snapshots in a cluster
nodetool -h 10.10.10.1 clear_global_snapshot
Restore Cassandra from Backups
Shut down the node to be restored
Clear commitlog: Clear files under the folder
rm /var/lib/cassandra/commitlog/*
For every keyspace, remove the db files
rm /var/lib/cassandra/data/mykeyspace/*.db
Do not remove the snapshots directory in it
Locate the latest snapshot directory
/var/lib/cassandra/data/mykeyspace/snapshots/timestamp-thissnapshotname
Copy the snapshot to the data directory
cp -p /var/lib/cassandra/data/mykeyspace/snapshots/1304617358646-mylatestsnapshot/* /var/lib/cassandra/data/mykeyspace
Restart the node
Thank’s http://jonathanhui.com/
