Install Cassandra Locally

pangxia75

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 dsc20
　　

Install the packages
$ sudo apt-get update
$ sudo apt-get install cassandra
Configure and run Cassandra
This is the configuration file cassandra reads at startup
$ sudo vi /etc/cassandra/cassandra.yaml
　　

Change authenticator: AllowAllAuthenticator
to authenticator: PasswordAuthenticator
　　

Bring up cassandra when system boots up
$ sudo update-rc.d cassandra enable
use $ cassandra command to enable the cassandra service
　　

then login with following command and you will be able to add new user and create schema:
cqlsh -u cassandra -p cassandra
then

• create keyspace _your_key_space with replication = { 'class' : 'SimpleStrategy', 'replication_factor' : 1 };
  
• CREATE USER your_user WITH PASSWORD 'your_password';
  

To update the existing password: ALTER USER your_user WITH PASSWORD 'new_password'; (may change USER to ROLE)
3) Create the schema accordingly