Allowed configurations

note

To successfully deploy the Cassandra data service, you must set the following mandatory parameters:
- HEAP_NEWSIZE
- MAX_HEAP_SIZE
You can modify the values of these parameters according to your specific needs and the capabilities of your system.
Use the parameters specified in the Environment variable column as key-value pairs either during the template configuration or when deploying the data service.

Java option	Environment variable	PDS default value
`-Xmx`, `-Xms`	`MAX_HEAP_SIZE`	700M
`-Xmn`	`HEAP_NEWSIZE`	100M
`-Xmx`, `-Xms`	`CASSANDRA_MAX_HEAP`
`-Dcassandra.replace_address`	`CASSANDRA_REPLACE_NODE`
`-Dcassandra.migration_task_wait_in_seconds`	`CASSANDRA_MIGRATION_WAIT`	`1`
`-Dcassandra.ring_delay_ms`	`CASSANDRA_RING_DELAY`	`30000`

Metrics exporter / Logging configuration	Environment variable	PDS default value
	`CASSANDRA_METRICS_MODE`	`basic`
	`CASSANDRA_OPEN_JMX`	`FALSE`
	`CASSANDRA_GC_STDOUT`	`FALSE`

Server configuration	Environment variable	PDS efault value
`dc`	`CASSANDRA_DC`	`DC1`
`rack`	`CASSANDRA_RACK`	`RAC1`
`disk_optimization_strategy`	`CASSANDRA_DISK_OPTIMIZATION_STRATEGY`	`ssd`
`auto_bootstrap`	`CASSANDRA_AUTO_BOOTSTRAP`	`TRUE`
`num_tokens`	`CASSANDRA_NUM_TOKENS`	`32`
`key_cache_size`	`CASSANDRA_KEY_CACHE_SIZE_IN_MB`
`concurrent_reads`	`CASSANDRA_CONCURRENT_READS`
`concurrent_writes`	`CASSANDRA_CONCURRENT_WRITES`
`memtable_cleanup_threshold`	`CASSANDRA_MEMTABLE_CLEANUP_THRESHOLD`
`memtable_allocation_type`	`CASSANDRA_MEMTABLE_ALLOCATION_TYPE`
`memtable_flush_writers`	`CASSANDRA_MEMTABLE_FLUSH_WRITERS`
`concurrent_compactors`	`CASSANDRA_CONCURRENT_COMPACTORS`
`compaction_throughput`	`CASSANDRA_COMPACTION_THROUGHPUT_MB_PER_SEC`
`counter_cache_size`	`CASSANDRA_COUNTER_CACHE_SIZE_IN_MB`
`internode_compression`	`CASSANDRA_INTERNODE_COMPRESSION`
`endpoint_snitch`	`CASSANDRA_ENDPOINT_SNITCH`	`SimpleSnitch`
`gc_warn_threshold`	`CASSANDRA_GC_WARN_THRESHOLD_IN_MS`
`listen_interface`	`CASSANDRA_LISTEN_INTERFACE`
`rpc_interface`	`CASSANDRA_RPC_INTERFACE`
	`CASSANDRA_GC_STDOUT`	`FALSE`