Ubuntu installation Cassandra

Uninstall Cassandra

$ sudo su

Remove Cassandra

$ apt-get Remove Cassandra

Cleaned the Cassandra folders

$ rm-rf/var/lib/cassandra

$ rm-rf/var/log/cassandra

$ rm-rf/etc/cassandra

Install Cassandra

ADD the DataStax Community repository to The/etc/apt/sources.list.d/cassandra.sources.list

$ echo "Deb Http://debian.datastax.com/community stable main" | sudo tee-a/etc/apt/sources.list.d/cassandra.sources.list

ADD the DataStax repository key to your aptitude trusted keys.

$ curl-l Https://debian.datastax.com/debian/repo_key | sudo apt-key add-

If the above doesn ' t work try:

Curl-l Http://debian.datastax.com/debian/repo_key | sudo apt-key add-

and then

sudo apt-get update and then sudo apt-get install Cassandra

Configure and Run Cassandra

The configuration file Cassandra reads at startup

$ sudo vi/etc/cassandra/cassandra.yaml

Change Authenticator:allowallauthenticator

To Authenticator:passwordauthenticator

Bring up Cassandra if system boots up

$ sudo update-rc.d Cassandra Enable

Use $ Cassandra command to enable the Cassandra Service

Then login with following command and you'll be able to add new user and create schema:

Cqlsh-u cassandra-p Cassandra

Create Kespace and user

1. Create Keyspace rainbowdba with replication = {' class ': ' Simplestrategy ', ' Replication_factor ': 1};

2. CREATE USER oc_app_rainbowdba with PASSWORD ' 0b6e8c45df68f6f16d1c494c6ba443c0 ';

ALTER USER oc_app_rainbowdba with PASSWORD ' a3c224d4b89192d2ea3ea943dd7e9648 '; (May change USER to ROLE)

3) Create the schema accordingly

Ubuntu installation Cassandra