basic one node cluster
======================
Requirements
------------
* Java >= 1.6 (OpenJDK and Sun have been tested)
* tar -zxvf apache-cassandra-$VERSION.tar.
* cd apache-cassandra-$VERSION
* sudo mkdir -p /var/log/cassandra
* sudo chown -R `whoami` /var/log/cassandra
* sudo mkdir -p /var/lib/cassandra
* sudo chown -R `whoami` /var/lib/cassandra
Now that we're ready, let's start it up!
* bin/cassandra -f
Now let's try to read and write some data using the command line client.
* bin/cassandra-cli --host localhost --port 9160
To Create Tables
----------------
cassandra> set Keyspace1.Standard2['jsmith'][
Value inserted.
cassandra> set Keyspace1.Standard2['jsmith'][
Value inserted.
cassandra> set Keyspace1.Standard2['jsmith'][
Value inserted.
cassandra> get Keyspace1.Standard2['jsmith']
(column=age, value=42; timestamp=1249930062801)
(column=first, value=John; timestamp=1249930053103)
(column=last, value=Smith; timestamp=1249930058345)
Returned 3 rows.
cassandra>
Configuring a Cassandra Cluster
=============================
Here is what I did to create a running Cassandra Cluster.
Stop individual Cassandra instances
Re-created data and log directories (I did this just to ensure a clean slate)
I added to my local hosts file two aliases for my servers (cass01 and cass02). This helped in the following step.
Three changes are needed to the default conf/storage-conf.xml file on my first server.
Change from localhost to cass01
Change from localhost to cass01
Change from 127.0.0.1 to cass01
On my second server I changed the and accordingly to cass02 and made cass01
Started Cassandra servers and tested successfully using the set …/get Keyspace1.Standard1['jsmith'] example. I was able to connect to both hosts via cassandra-cli and see the results created on just one node. I was able to create data on the second node and view on the first node.
A new command is available to describe your cluster.
$ bin/nodeprobe -host cass01 ring
Address Status Load Range Ring
148029780173059661585165369000
192.168.100.4 Up 0 bytes 593034452677203482770076453481
192.168.100.5 Up 0 bytes 148029780173059661585165369000
Now with my first introduction successful, time to start using and seeing the true power of using Cassandra.
Realtime Example
================
On nk114 [Master]
-----------------
vi conf/storage-conf.xml
Steps to run
-------------
bin/cassandra -f
bin/cassandra-cli --host nk114 --port 9160
to check the cluster status
---------------------------
bin/nodeprobe -host nk114 ring
On nk75 [Slave]
---------------
vi conf/storage-conf.xml
Steps to run
------------
bin/cassandra -f
bin/cassandra-cli --host nk114 --port 9160
to check the cluster status
---------------------------
bin/nodeprobe -host nk114 ring
