Installing Cassandra in Cent OS

Hope you read the article on Installing CentOS by means of Virtual box. The following post deals with installing No-SQL tool Cassandra in Cent OS. We saw in the last post as how to install Cent OS using Virtual box.

Following are the step by step process:

• CentOS would be running on port 2222. To connect to the CentOS from Windows, you need to download Putty.
• Check the version of Java with the following command
• java -version
• If the installation of java could not be located, then install the necessary JAVA version by locating the RPM version and installing by the following command
• rpm -i java_location
•  Add a yum repository specification for the DataStax repository in /etc/yum.repos.d. 
• For example:
• $ sudo vi /etc/yum.repos.d/datastax.repo
• In this file add the following lines for the DataStax repository:

[datastax]
name= DataStax Repo for Apache Cassandra
baseurl=http://rpm.datastax.com/community
enabled=1
gpgcheck=0

• Install the package using yum
• $ sudo yum install dsc1.1

Note: You might encounter an error like this - "cassandra dead but pid file exists". To fix this issue, Edit the cassandra-env.sh:

sudo vi /etc/cassandra/conf/cassandra-env.sh

and change the 180k to 256k like this:

JVM_OPTS="$JVM_OPTS -Xss180k"

to:

JVM_OPTS="$JVM_OPTS -Xss256k"

That should fix it.