desperados: A Ruby library for Ceph’s Rados¶ ↑

Ceph is a distributed network storage and file system. It’s based on a reliable and scalable distributed object store calles RADOS. More about it here: ceph.newdream.net

Desperados is a Ruby wrapper for the C++ librados library, making interacting with a Ceph cluster in Ruby very easy.

require ‘rados’

Rados::initialize

pool = Rados::Pool.create("mypool")
pool.write("mykey", "somedata")
pool.read("mykey") == "somedata"

require 'rados'
Rados::initialize

pool = Rados::Pool.create("mypool")
o = pool.objects.new("mykey")
o.write("Once upon")
o.write(" a time")
o.seek(0)
o.read == "Once upon a time"
o = pool.objects.find("mykey")
o.seek(5)
o.read == "upon a time"

librados will read your ceph.conf config file to discover your cluster’s monitors, so that needs to be available (usually in ./ceph.conf or /etc/ceph/ceph.conf)

Author

John Leach (john@johnleach.co.uk)

Copyright

Copyright © 2010, 2011 John Leach

License

LGPL

Github

github.com/johnl/desperados/tree/master