This document summarizes the configuration of Cassandra, including modifying properties in the cassandra.yaml file like auto_bootstrap, cluster_name, listen_address, and seed_provider. It also describes Cassandra startup options, using the cassandra-rackdc.properties file to configure data centers and racks, and lists important Cassandra configuration file locations such as cassandra.yaml, cassandra-env.sh, and log4j-server.properties.

1. Clustering property cassandra.yaml
• Config /etc/cassandra/conf
• auto_bootstrap change to true from false.
• cluster_name SaamaCluster (ClusterName)
• listen_address/broadcast_address: (IP_address of machine)
endpoint_snitch GossipingPropertyFileSnitch
• num_tokens 256
• seed_provider 172.23.6.84 // When a node joins a cluster, it
contacts the seed node(s) to determine the ring topology and
obtain gossip information
• //about the other nodes in the cluster. Seed
nodes are not a single point of failure, used in cluster
operations for bootstrapping of nodes
• RPC_ADDRESS
CASSANDRA CONFIGURATION

2.  Cassandra <options>
 -f start C* in foreground
 -p <filename> Log processID in file named file.
 -v print version and exit
 -D <parameter> pass startup parameter.
CASSANDRA STRAT OPTIONS

3. • Clustering property
/cassandra/conf/cassandra-rackdc.properties
IP-address : Data Centre: Rack.
IP-address : Data Centre: Rack
• Setup data centers and rack to partition load on different
cluster.
• Flush data at
/var/lib/cassandra/data/
/var/lib/cassandra/commitlog/
/var/lib/cassandra/saved_caches/
CASSANDRA CONFIGURATION

4. • Data Directory: /var/lib/cassandra
• Log Directory: /var/log/cassandra
/var/log/cassandra/system.log
• log level default(info)
Trace>Debug>info>Warn>Error>Fatal
• Runtime files: /var/run/cassandra
• Environment setting : /usr/share/cassandra
• Jar files : /usr/share/cassandra/lib
• Binary files: /usr/bin
/usr/sbin
• Configuration : /etc/cassandra
• Service startup script: /etc/init.d
• Cassandra user limit : /etc/security/limits.d
• /etc/default
CASSANDRA IMPORTANT FILE
LOCATION

5. • Cassandra.yaml: primary config file
• casaandra-env.sh : java env config (max heap size).
• log4j-server.properties: log level and location
setting
• cassandra-rackdc.properties: config Rack and dc
which node belong // with create table
Strategyclass='networkTopologystrategy' and
strategy_option:DC1=3;
• cassandra-topology.properties: IP for rack and DC :
<IP> DC1:RAC1
CASSANDRA IMPORTANT FILE