Adding NoSQL Persistence to Storm - Real-time Analytics with Storm and Cassandra - page 128

Installing Cassandra data centers

The following are a set of steps to set up Cassandra data centers:

1. Let's start with an assumption that we have already installed Cassandra on the fol-
lowing nodes:

10.188.66.41 (seed1)

10.196.43.66

10.188.247.41

10.196.170.59 (seed2)

10.189.61.170

10.189.30.138
2. Assign tokens using the token generation Python script defined in the previous sec-
tion to each of the preceding nodes.
3. Let's say we align to the following distribution of nodes and their tokens across the
data centers:

Node IP Address Token Data Center

node0 10.188.66.41 0 Dc1

node1 10.196.43.66 56713727820156410577229101238628035245 Dc1

node2 10.188.247.41 113427455640312821154458202477256070488 Dc1

node3 10.196.170.59 10 Dc2

node4 10.189.61.170 56713727820156410577229101238628035255 Dc2

node5 10.189.30.138 113427455640312821154458202477256070498 Dc2

4. Stop Cassandra on the nodes and clear the data from data_dir of Cassandra:

$ ps auwx | grep cassandra