ConfigNode Configuration February 23, 2023 About 3 min IoTDB ConfigNode files are under conf.
confignode-env.sh/bat：Environment configurations, in which we could set the memory allocation of ConfigNode.
iotdb-system.properties：IoTDB system configurations.
The environment configuration file is mainly used to configure the Java environment related parameters when ConfigNode is running, such as JVM related configuration. This part of the configuration is passed to the JVM when the ConfigNode starts.
The details of each parameter are as follows:
Name MEMORY_SIZE Description The memory size that IoTDB ConfigNode will use when startup Type String Default The default is three-tenths of the memory, with a maximum of 16G. Effective After restarting system
Name ON_HEAP_MEMORY Description The heap memory size that IoTDB ConfigNode can use, Former Name: MAX_HEAP_SIZE Type String Default Calculate based on MEMORY_SIZE. Effective After restarting system
Name OFF_HEAP_MEMORY Description The direct memory that IoTDB ConfigNode can use, Former Name: MAX_DIRECT_MEMORY_SIZE Type String Default Calculate based on MEMORY_SIZE. Effective After restarting system
The global configuration of cluster is in ConfigNode.
Name cn_internal_address Description ConfigNode internal service address Type String Default 127.0.0.1 Effective Only allowed to be modified in first start up
Name cn_internal_port Description ConfigNode internal service port Type Short Int : [0,65535] Default 10710 Effective Only allowed to be modified in first start up
Name cn_consensus_port Description ConfigNode data Consensus Port Type Short Int : [0,65535] Default 10720 Effective Only allowed to be modified in first start up
Name cn_seed_config_node Description Seed ConfigNode's address for current ConfigNode to join the cluster. This parameter is corresponding to cn_target_config_node_list before V1.2.2 Type String Default 127.0.0.1:10710 Effective Only allowed to be modified in first start up
Name cn_system_dir Description ConfigNode system data dir Type String Default data/system（Windows：data\system） Effective After restarting system
Name cn_consensus_dir Description ConfigNode Consensus protocol data dir Type String Default data/confignode/consensus（Windows：data\confignode\consensus） Effective After restarting system
cn_rpc_thrift_compression_enable Name cn_rpc_thrift_compression_enable Description Whether enable thrift's compression (using GZIP). Type Boolean Default false Effective After restarting system
cn_rpc_thrift_compression_enable Name cn_rpc_thrift_compression_enable Description Whether enable thrift's compression (using GZIP). Type Boolean Default false Effective After restarting system
cn_rpc_advanced_compression_enable Name cn_rpc_advanced_compression_enable Description Whether enable thrift's advanced compression. Type Boolean Default false Effective After restarting system
cn_rpc_max_concurrent_client_num Name cn_rpc_max_concurrent_client_num Description Max concurrent rpc connections Type Short Int : [0,65535] Description 65535 Effective After restarting system
Name cn_thrift_max_frame_size Description Max size of bytes of each thrift RPC request/response Type Long Unit Byte Default 536870912 Effective After restarting system
cn_thrift_init_buffer_size Name cn_thrift_init_buffer_size Description Initial size of bytes of buffer that thrift used Type long Default 1024 Effective After restarting system
Name cn_connection_timeout_ms Description Thrift socket and connection timeout between nodes Type int Default 60000 Effective After restarting system
cn_selector_thread_nums_of_client_manager Name cn_selector_thread_nums_of_client_manager Description selector thread (TAsyncClientManager) nums for async thread in a clientManager Type int Default 1 Effective After restarting system
cn_core_client_count_for_each_node_in_client_manager Name cn_core_client_count_for_each_node_in_client_manager Description Number of core clients routed to each node in a ClientManager Type int Default 200 Effective After restarting system
cn_max_client_count_for_each_node_in_client_manager Name cn_max_client_count_for_each_node_in_client_manager Description Number of max clients routed to each node in a ClientManager Type int Default 300 Effective After restarting system
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