cassandra_setup.txt

CASSANDRA_VERION=3.11
CASSANDRA_NODES=(
                CASSANDRA_1 \
                CASSANDRA_2 \
                CASSANDRA_3
               )  

# setup cassandra 3.11
# assume you have docker installed.
setup casssandra cluster using docker:

# create the cassandra network for cassdra cluster.

docker network create cassandra-network

# create 2 volumns for cassandra cluster.

docker volumn create cassandra_vol1
docker volumn create cassandra_vol2
docker volumn create cassandra_vol3

# run following command to download and run cassandra


### by defult, cassandra storing data in /var/lib/cassandra

docker run \
--name cassandra1 \
--network cassandra-network \
-v cassandra_vol1:/var/lib/cassandra \
-d cassandra:3.11

docker run \
--name cassandra2 \
--network cassandra-network \
-v cassandra_vol2:/var/lib/cassandra \
-e CASSANDRA_SEEDS=cassandra1 \
-d cassandra:3.11

docker run \
--name cassandra3 \
--network cassandra-network \
-v cassandra_vol3:/var/lib/cassandra \
-e CASSANDRA_SEEDS=cassandra1 \
-d cassandra:3.11

# connect to any node in the  cassandra cluster from cassandra shell.

docker run -it \
--network cassandra-network \
--rm cassandra cqlsh cassandra1