Cassandra Cluster 3.x Installation

1. 여기에서 다운로드 받아서 설치함 https://dlcdn.apache.org/cassandra/3.11.14/apache-cassandra-3.11.14-bin.tar.gz
2. jdk는 1.8을 설치함
3. cassandra.yaml을 변경함 (chatgpt에게 질문했고, 아래와 같이 답변을 얻음) 아래의 key 값들만 변경하면 클러스터 동작함

cluster_name: 'testcluster'
data_file_directories:
    - /home/user1/data/cassandra/data
commitlog_directory: /home/user1/data/cassandra/commitlog
seed_provider:
    # Addresses of hosts that are deemed contact points. 
    # Cassandra nodes use this list of hosts to find each other and learn
    # the topology of the ring.  You must change this if you are running
    # multiple nodes!
    - class_name: org.apache.cassandra.locator.SimpleSeedProvider
      parameters:
          # seeds is actually a comma-delimited list of addresses.
          # Ex: "<ip1>,<ip2>,<ip3>"
          - seeds: "192.168.10.1,192.168.10.2,192.168.10.3"
listen_address: 192.168.10.1
rpc_address: 0.0.0.0
broadcast_rpc_address: 192.168.10.1
endpoint_snitch: GossipingPropertyFileSnitch

4. .bashrc에 CASSANDRA_HOME을 설정한다.

export CASSANDRA_HOME=/home/deploy/apps/cassandra
export PATH=$PATH:$CASSANDRA_HOME/bin

5. 다음과 같이 cassandra를 시작하고, 노드의 상태를 확인한다.

// 카산드라를 실행한다.
/home/user1/apps/cassandra/bin/cassandra

// 3개의 노드를 모두 구동한 후에 상태를 확인한다.
./nodetool status

Datacenter: dc1
===============
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
--  Address         Load       Tokens  Owns (effective)  Host ID                          Rack
UN  192.168.10.1  164.49 KiB  256     68.7%        a75ff040-f2ff-4ebd-8ce1-a406689dd1b6  rack1
UN  192.168.10.2  153.06 KiB  256     68.5%        a8929806-ce38-49e1-8286-98343fed2136  rack1
UN  192.168.10.3  152.51 KiB  256     62.9%        91248706-5242-452d-bd24-dd5e39acbc1c  rack1