The redis-trib.rb and create-cluster scripts are from the redis repository and copied here only for convenience, with the redis copyright added to the top of the files. The create-cluster script has been adjusted to start the $PATH-installed redis-server and redis-cli binaries, and the redis-trib.rb script in the current directory.
Command ccheck implements the consistency checker redis cluster client
as described in http://redis.io/topics/cluster-tutorial. It is used
to test the redisc package with real cluster failover and resharding
situations.