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From Aaron Morton <aa...@thelastpickle.com>
Subject Re: cassandra monitoring
Date Tue, 31 Dec 2013 02:19:05 GMT
>  JMX is doing it's thing on the cassandra node and is running on port 8081
Have you set the JMX port for the cluster in Ops Centre ? The default JMX port has been 7199
for a while.

Off the top of the my head it’s in the same area where you specify the initial nodes in
the cluster, maybe behind an “Advanced” button. 

The Ops Centre agent talks to the server to find out what JMX port it should use to talk to
the local Cassandra install. 

Also check the logs in /var/log/datastax 

Cheers

-----------------
Aaron Morton
New Zealand
@aaronmorton

Co-Founder & Principal Consultant
Apache Cassandra Consulting
http://www.thelastpickle.com

On 30/12/2013, at 2:21 am, Tim Dunphy <bluethundr@gmail.com> wrote:

> Hi all,
> 
> I'm attempting to configure datastax agent so that opscenter can monitor cassandra. I
am running cassandra 2.0.3 and opscenter-4.0.1-2.noarch running. Cassandra is running on a
centos 5.9 host and the opscenter host is running on centos 6.5
> 
> A ps shows the agent running
> 
> [root@beta:~] #ps -ef | grep datastax | grep -v grep 
> root      2166     1  0 03:31 ?        00:00:00 /bin/bash /usr/share/datastax-agent/bin/datastax_agent_monitor
> 106       2187     1  0 03:31 ?        00:01:37 /etc/alternatives/javahome/bin/java -Xmx40M
-Xms40M -Djavax.net.ssl.trustStore=/var/lib/datastax-agent/ssl/agentKeyStore -Djavax.net.ssl.keyStore=/var/lib/datastax-agent/ssl/agentKeyStore
-Djavax.net.ssl.keyStorePassword=opscenter -Dagent-pidfile=/var/run/datastax-agent/datastax-agent.pid
-Dlog4j.configuration=/etc/datastax-agent/log4j.properties -jar datastax-agent-4.0.2-standalone.jar
/var/lib/datastax-agent/conf/address.yaml
> 
> And the service itself claims that it is running:
> 
> [root@beta:~] #service datastax-agent status 
> datastax-agent (pid  2187) is running...
> 
> On the cassandra node I have ports 61620 and 61621 open on the firewall.
> 
> But if I do an lsof and look for those ports I see no activity there.
> 
> [root@beta:~] #lsof -i :61620 
> [root@beta:~] #lsof -i :61621
> 
> And a netstat turns up nothing either:
> [root@beta:~] #netstat -tapn | egrep "(datastax|ops)"
> 
> 
> So I guess it should come as no surprise that the opscenter interface reports the node
as down.
> 
> And trying to reinstall the agent remotely by clicking the 'fix' link errors out:
> 
> g is null
> 
> If you need to make changes, you can press "Retry" and the installations will be retried.
> 
> And also I got on another attempt:
> 
> "Cannot call method 'getRequstStatus' of null. 
> 
> I'm really wondering why I'm doing wrong here, and how I can work my way out of this
quagmire. It would be beyond awesome to actually get this working!
> 
> I've also attempted to get Cassandra Cluster Admin working. JMX is doing it's thing on
the cassandra node and is running on port 8081. CCA is running on the same host as the opscenter.
> 
> But cca gives me this error once I log in:
> 
> Cassandra Cluster Admin
> 
> Logout
> 
> Fatal error: Uncaught exception 'TTransportException' with message 'TSocket: timed out
reading 4 bytes from beta.jokefire.com:9160' in /var/www/Cassandra-Cluster-Admin/include/thrift/transport/TSocket.php:268
Stack trace: #0 /var/www/Cassandra-Cluster-Admin/include/thrift/transport/TTransport.php(87):
TSocket->read(4) #1 /var/www/Cassandra-Cluster-Admin/include/thrift/transport/TFramedTransport.php(135):
TTransport->readAll(4) #2 /var/www/Cassandra-Cluster-Admin/include/thrift/transport/TFramedTransport.php(102):
TFramedTransport->readFrame() #3 /var/www/Cassandra-Cluster-Admin/include/thrift/transport/TTransport.php(87):
TFramedTransport->read(4) #4 /var/www/Cassandra-Cluster-Admin/include/thrift/protocol/TBinaryProtocol.php(300):
TTransport->readAll(4) #5 /var/www/Cassandra-Cluster-Admin/include/thrift/protocol/TBinaryProtocol.php(192):
TBinaryProtocol->readI32(NULL) #6 /var/www/Cassandra-Cluster-Admin/include/thrift/packages/cassandra/cassandra.Cassandra.client.php(1017):
TBinaryProtocol->readMessageBegin(NULL, 0, 0) # in /var/www/Cassandra-Cluster-Admin/include/thrift/transport/TSocket.php
on line 268
> 
> Any advice I could get on my CCA problem and /or my Opcenter problem would be great and
appreciated.
> 
> Thanks
> Tim
> 
> -- 
> GPG me!!
> 
> gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B
> 


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