FYI - looks like Datastax's dsc12 repo is down?
I was following page 42 of the current cassadra12.pdf document.
[root@server2 ~]# sudo yum install dsc12
Loaded plugins: fastestmirror
Bad id for repo: datastax , byte = 8
Loading mirror speeds from cached hostfile
* epel: fedora-epel.mirror.lstn.net
Setting up Install Process
No package dsc12 available.
Error: Nothing to do
[root@server2 ~]# cat /etc/yum.repos.d/datastax.repo
[datastax ]
name = DataStax Repo for Apache Cassandra
baseurl =http://rpm.datastax.com/community
enabled =1
gpgcheck =0