Configuring IoTDB Parameters¶
Scenario¶
IoTDB uses the multi-replica deployment architecture to implement cluster high availability. Each region (DataRegion and SchemaRegion) has three replicas by default. You can also configure more replicas. If a node is faulty, replicas on other nodes of the region replica can take over services from the faulty node, ensuring service continuity and improving cluster stability.
Procedure¶
Log in to Manager, choose Cluster > Services > IoTDB > Configurations > All Configurations to go to the IoTDB configuration page, and modify the parameters.
Modify the ConfigNode and IoTDBServer configurations.
Modifying the ConfigNode configuration:
Modifying the IoTDBServer configuration:
¶ Parameter
Role
Example Value
Description
read_consistency_level
ConfigNode
strong
Read consistency level of the custom parameter confignode.customized.configs. Currently, the value can only be strong or weak.
flush_proportion
IoTDBServer
0.4
Write memory ratio for invoking disk flushing. If the write load is too high (for example, batch processing = 1000), you can reduce the value.
replica_affinity_policy
IoTDBServer
random
When the value of read_consistency_level is weak, the strategy of the region replica node is selected for the query task.
coordinator_read_executor_size
IoTDBServer
20
Number of read thread cores of the IoTDBServer Coordinator of the custom parameter engine.customized.configs
rpc_thrift_compression_enable
ALL
false
Whether to compress data during transmission. Data is not compressed by default.
root.log.level
ALL
INFO
IoTDB log level. The modification of this parameter takes effect without restarting related instances.
SSL_ENABLE
ALL
true
Whether to encrypt the channel between the client and server using SSL
Click Save.
Click the Instance tab. Select the corresponding instance and choose More > Restart Instance to make the configuration take effect.