Re: Newbie question about connecting to a cassandra server from another server using Fauna

[Aaron Morton]

You can run the cassandra-cli from any machine. If you run it from the same machine as your ruby code it's a reliable way to check you can connect to the cluster. 

ok, next set of questions....

- what version of cassandra are you using ? Is it 0.7?

- what require did you run ? was it require 'cassandra/0.7' ? see the Usage section https://github.com/fauna/cassandra for details. 

  Cassandra 0.7 defaults to frames transport, 0.6 does not. 

Aaron

On 07 Dec, 2010,at 09:07 AM, Alberto Velandia <betovelan...@gmail.com> wrote:

I've tried the keyspaces() function and got this on return:

 compass.keyspaces()

CassandraThrift::Cassandra::Client::TransportException: CassandraThrift::Cassandra::Client::TransportException

from /home/compass/.rvm/gems/ruby-1.9.2...@rails3/gems/thrift-0.2.0.4/lib/thrift/transport/socket.rb:53:in `rescue in open'

from /home/compass/.rvm/gems/ruby-1.9.2...@rails3/gems/thrift-0.2.0.4/lib/thrift/transport/socket.rb:36:in `open'

from /home/compass/.rvm/gems/ruby-1.9.2...@rails3/gems/thrift-0.2.0.4/lib/thrift/transport/buffered_transport.rb:37:in `open'

from /home/compass/.rvm/gems/ruby-1.9.2...@rails3/gems/thrift_client-0.5.0/lib/thrift_client/connection/socket.rb:11:in `connect!'

from /home/compass/.rvm/gems/ruby-1.9.2...@rails3/gems/thrift_client-0.5.0/lib/thrift_client/abstract_thrift_client.rb:82:in `connect!'

from /home/compass/.rvm/gems/ruby-1.9.2...@rails3/gems/thrift_client-0.5.0/lib/thrift_client/abstract_thrift_client.rb:110:in `handled_proxy'

from /home/compass/.rvm/gems/ruby-1.9.2...@rails3/gems/thrift_client-0.5.0/lib/thrift_client/abstract_thrift_client.rb:57:in `get_string_property'

from /home/compass/.rvm/gems/ruby-1.9.2...@rails3/gems/cassandra-0.8.2/lib/cassandra/cassandra.rb:302:in `all_nodes'

from /home/compass/.rvm/gems/ruby-19.2...@rails3/gems/cassandra-0.8.2/lib/cassandra/cassandra.rb:285:in `reconnect!'

from /home/compass/.rvm/gems/ruby-1.9.2...@rails3/gems/cassandra-0.8.2/lib/cassandra/cassandra.rb:280:in `client'

from /home/compass/.rvm/gems/ruby-1.9.2...@rails3/gems/cassandra-0.8.2/lib/cassandra/cassandra.rb:86:in `keyspaces'

from (irb):4

from /home/compass/.rvm/rubies/ruby-1.9.2-p0/bin/irb:16:in `<main>'

about the cassandra-cli, should I run the command on the server from which I'm trying to connect?

Thanks for the help

On Dec 6, 2010, at 2:52 PM, Aaron Morton wrote:

What function are you calling to get data and what is the error ?

Try calling a function like keyspaces(), it should return a list of the keyspaces in your cluster  and is a good way to test things are connected.

If there is still no joy check you can connect to your cluster using the cassandra-cli command line app located in cassandra/bin

Aaron

On 07 Dec, 2010,at 08:46 AM, Alberto Velandia <betovelan...@gmail.com> wrote:

Hi I'm trying to create a connection to a server running cassandra doing this:

compass = Cassandra.new('Compas', servers="223.798.456.123:9160")

But once I try to get some data I realize that there's no connection, any ideas?? I'm I missing something ?

Thanks