You might consider writing some kind of php script that runs nodetool "ring" and parse the output?

2012/2/6 Tamil selvan R.S <tamil.3758@gmail.com>
Hi,
 What is the best way to know the cluster status via php? 
 Currently we are trying to connect to individual cassandra instance with a specified timeout and if it fails we report the node to be down. 
 But this test remains faulty. What are the other ways to test availability of nodes in cassandra cluster?
 How does datastax opscenter manage to  do that?

Regards,
Tamil Selvan