cassandra-env.sh file
The cassandra-env.sh bash script file can be used to pass additional
options to the Java virtual machine (JVM), such as maximum and minimum
heap size, rather than setting them in the environment. If the JVM
settings are static and do not need to be computed from the node
characteristics, the cassandra-jvm-options files should be used
instead. For example, commonly computed values are the heap sizes, using
the system values.
For example, add
JVM_OPTS="$JVM_OPTS -Dcassandra.load_ring_state=false" to the
cassandra_env.sh file and run the command-line cassandra to start.
The option is set from the cassandra-env.sh file, and is equivalent to
starting Cassandra with the command-line option
cassandra -Dcassandra.load_ring_state=false.
The -D option specifies the start-up parameters in both the command
line and cassandra-env.sh file. The following options are available:
cassandra.auto_bootstrap=false
Facilitates setting auto_bootstrap to false on initial set-up of the
cluster. The next time you start the cluster, you do not need to change
the cassandra.yaml file on each node to revert to true, the default
value.
cassandra.available_processors=<number_of_processors>
In a multi-instance deployment, multiple Cassandra instances will independently assume that all CPU processors are available to it. This setting allows you to specify a smaller set of processors.
cassandra.boot_without_jna=true
If JNA fails to initialize, Cassandra fails to boot. Use this command to boot Cassandra without JNA.
cassandra.config=<directory>
The directory location of the cassandra.yaml file. The default
location depends on the type of installation.
cassandra.ignore_dynamic_snitch_severity=true|false
Setting this property to true causes the dynamic snitch to ignore the severity indicator from gossip when scoring nodes. Explore failure detection and recovery and dynamic snitching for more information.
Default: false
cassandra.initial_token=<token>
Use when virtual nodes (vnodes) are not used. Sets the initial partitioner token for a node the first time the node is started. Note: Vnodes are highly recommended as they automatically select tokens.
Default: disabled
cassandra.join_ring=true|false
Set to false to start Cassandra on a node but not have the node join the
cluster. You can use nodetool join and a JMX call to join the ring
afterwards.
Default: true
cassandra.load_ring_state=true|false
Set to false to clear all gossip state for the node on restart.
Default: true
cassandra.metricsReporterConfigFile=<filename>
Enable pluggable metrics reporter. Explore pluggable metrics reporting for more information.
cassandra.partitioner=<partitioner>
Set the partitioner.
Default: org.apache.cassandra.dht.Murmur3Partitioner
cassandra.prepared_statements_cache_size_in_bytes=<cache_size>
Set the cache size for prepared statements.
cassandra.replace_address=<listen_address of dead node>|<broadcast_address of dead node>
To replace a node that has died, restart a new node in its place
specifying the listen_address or broadcast_address that the new node
is assuming. The new node must not have any data in its data directory,
the same state as before bootstrapping. Note: The broadcast_address
defaults to the listen_address except when using the
Ec2MultiRegionSnitch.
cassandra.ring_delay_ms=<number_of_ms>
Defines the amount of time a node waits to hear from other nodes before formally joining the ring.
Default: 1000ms
cassandra.native_transport_port=<port>
Set the port on which the CQL native transport listens for clients.
Default: 9042
cassandra.rpc_port=<port>
Set the port for the Thrift RPC service, which is used for client connections.
Default: 9160
cassandra.start_native_transport=true|false
Enable or disable the native transport server. See
start_native_transport in cassandra.yaml.
Default: true
cassandra.triggers_dir=<directory>
Set the default location for the trigger JARs.
Default: conf/triggers
