[Cassandra Wiki] Update of "CloudConfig" by DaveViner

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The "CloudConfig" page has been changed by DaveViner.
http://wiki.apache.org/cassandra/CloudConfig?action=diff&rev1=3&rev2=4

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  == Amazon Web Services (AWS/EC2) ==
   * There is an ec2snitch to make Cassandra rack-aware in the ec2 cloud.
   * [[http://github.com/b/cookbooks/tree/master/cassandra|Chef install for Cassandra]], including ec2snitch setup.
+  * The steps listed below only require an AWS EC2 account and do not utilize the ec2snitch.
  
  === Optimizing Volume Performance for a Transient Cluster ===
  Depending on node size, and on how many EBS volumes are attached, most EC2 nodes will have many independent attached volumes.
@@ -16, +17 @@

  Cloud clusters are often transient: when all jobs are finished, the nodes are terminated. Any data held on EBS volumes will remain until next restart, and any data on the local scratch disks disappears forever. When the cluster restarts, each node will have a new ip addresses and identity.
  
   * For a non-persistent cluster, can Cassandra take advantage of the scratch disks (assume they are fast but could disappear at once across the whole cluster at any time)
+ 
+ === Monitoring Cassandra in the Cloud ===
+ 
+ [[http://www.cloudkick.com|CloudKick]] offers an out-of-the-box solution for monitoring Cassandra in the cloud.  See their [[https://support.cloudkick.com/Cassandra_Checks|Cassandra Checks]] page to learn how to use that service to monitor.
+ 
+ Note on using Cloudkick for monitoring Cassandra running on Debian: Set the "Path" argument to "/usr/". 
  
  == Step-By-Step Guide to Installing Cassandra on EC2 & Debian ==