Re: Is there a way from a running Cassandra node to determine whether or not itself is up?

2011-06-16 Thread aaron morton
take a look at mx4j http://wiki.apache.org/cassandra/Operations#Monitoring_with_MX4J someone told me once you can call the JMX ops via http, i've not checked though. Cheers - Aaron Morton Freelance Cassandra Developer @aaronmorton http://www.thelastpickle.com On 16 Jun 2011,

Re: Is there a way from a running Cassandra node to determine whether or not itself is up?

2011-06-15 Thread Suan Aik Yeo
Thanks, Aaron, but we determined that adding Java into the equation just brings in too much complexity for something that's called out of an Nginx Perl module. Right now I'm having trouble even replicating the above scenario and posted a question here:

Re: Is there a way from a running Cassandra node to determine whether or not itself is up?

2011-06-15 Thread Jake Luciani
No force a node down you can use nodetool disablegossip On Wed, Jun 15, 2011 at 6:42 PM, Suan Aik Yeo yeosuan...@gmail.com wrote: Thanks, Aaron, but we determined that adding Java into the equation just brings in too much complexity for something that's called out of an Nginx Perl module.

Re: Is there a way from a running Cassandra node to determine whether or not itself is up?

2011-06-09 Thread aaron morton
None via thrift that I can recall, but the StorageService MBean exposes getLiveNodes() this is what nodetool uses to see which nodes are live. From the code... /** * Retrieve the list of live nodes in the cluster, where liveness is * determined by the failure detector of the node

Is there a way from a running Cassandra node to determine whether or not itself is up?

2011-06-08 Thread Suan Aik Yeo
Is there a way (preferably an exposed method accessible through Thrift), from a running Cassandra node to determine whether or not itself is up? (Per Cassandra standards, I'm assuming based on the gossip protocol). Another way to think of what I'm looking for is basically running nodetool ring