CentOS 6 Installing Datastax Apache Cassandra

I recently setup a Cassandra environment for a customer, the easiest approach was to utilize the DataStax Yum repository which is detailed below. As detailed previously there is a compatability issue with the OpenJDK default in CentOS so first follow my previous post on installing the Oracle JDK.

Installation

  • As root create /etc/yum.repos.d/datastax.repo:
    [datastax]
    name= DataStax Repo for Apache Cassandra
    baseurl=http://rpm.datastax.com/community
    enabled=1
    gpgcheck=0
  • To install Cassandra, for Apache Cassandra 1.2.x:
    sudo yum install cassandra12
  • Install a copy of JNA jar just for Cassandra
    Note: JNA from base repo is 3.2.4 while Cassandra requires 3.2.7+
    cd /usr/share/cassandra/lib
    sudo wget https://maven.java.net/content/repositories/releases/net/java/dev/jna/jna/3.5.1/jna-3.5.1.jar
    sudo chown cassandra:cassandra jna-3.5.1.jar
    sudo chown 755 jna-3.5.1.jar
  • Fix permissions
    sudo chown -R cassandra:cassandra /var/lib/cassandra
    sudo chown -R cassandra:cassandra /var/log/cassandra

Configuration

  • Create /etc/profile.d/cassandra.sh
    export CASSANDRA_HOME=/usr/share/cassandra
  • Load into current session:
    source /etc/profile.d/cassandra.sh
  • Edit the following settings in /etc/cassandra/conf/cassandra.yaml:
    cluster_name: ''
    ...
    - seeds: ""
    ...
    listen_address:
    ...
    rpc_address: 0.0.0.0

    Note: for more details about configuring and optimizing a multi-node cluster, see sources.
  • Open ports
    7199 for JMX
    9160 for Cassandra Thrift
    7000 for Cassandra Gossip
  • Start cassandra:
    sudo service cassandra start
  • Start cassandra on boot:
    sudo chkconfig cassandra on

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