Amazon DocumentDB Cluster Parameters Reference

Amazon DocumentDB Cluster Parameters Reference

When you change a dynamic parameter and save the cluster parameter group, the change is applied immediately regardless of the Apply immediately setting. When you change a static parameter and save the cluster parameter group, the parameter change takes effect after you manually reboot the instance. You can reboot an instance using the Amazon DocumentDB console or by explicitly calling reboot-db-instance.

The following table shows the parameters that apply to all instances in an Amazon DocumentDB cluster.

Amazon DocumentDB cluster-level parameters
Parameter	Default Value	Valid Values	Modifiable	Apply Type	Data Type	Description
`audit_logs`	disabled	enabled, disabled	Yes	Dynamic	String	Defines whether AWS CloudTrail audit logs are enabled. `enabled`—CloudTrail audit logs are enabled. `disabled`—CloudTrail audit logs are disabled.
`change_stream_log_retention_duration`	10800	3600-86400	Yes	Dynamic	Integer	Defines the duration of time (in seconds) that the change stream log is retained and can be consumed.
`profiler`	disabled	enabled, disabled	Yes	Dynamic	String	Enables profiling for slow operations. `enabled`—operations that take longer than a customer-defined threshold value (e.g., 100ms) are logged toAmazon CloudWatch Logs. `disabled`—slow operations are not logged to CloudWatch Logs.
`profiler_sampling_rate`	1.0	0.0-1.0	Yes	Dynamic	Float	Defines the sampling rate for logged operations.
`profiler_threshold_ms`	100	50-2147483646	Yes	Dynamic	Integer	Defines the threshold for `profiler`. All operations greater than `profiler_threshold_ms` are logged to CloudWatch Logs.
`tls`	enabled	enabled, disabled	Yes	Static	String	Defines whether Transport Layer Security (TLS) connections are required. `enabled`—TLS connections are required to connect. `disabled`—TLS connections cannot be used to connect.
`ttl_monitor`	enabled	enabled, disabled	Yes	Dynamic	String	Defines whether Time to Live (TTL) monitoring is enabled for the cluster. `enabled`—TTL monitoring is enabled. `disabled`—TTL monitoring is disabled.