Ensure That the 'Log_min_duration_statement' Database Flag for Cloud SQL PostgreSQL Instance Is Set to '-1' (Disabled)

LOW

Description

Description:

The 'log_min_duration_statement' flag defines the minimum amount of execution time of a statement in milliseconds where the total duration of the statement is logged. Ensure that 'log_min_duration_statement' is disabled, i.e., a value of '-1' is set.

Rationale:

Logging SQL statements may include sensitive information that should not be recorded in logs. This recommendation is applicable to PostgreSQL database instances.

Turning on logging will increase the required storage over time. Mismanaged logs may cause your storage costs to increase.Setting custom flags via command line on certain instances will cause all omitted flags to be reset to defaults. This may cause you to lose custom flags and could result in unforeseen complications or instance restarts. Because of this, it is recommended you apply these flags changes during a period of low usage.

Remediation

From Console:

Go to the Cloud SQL Instances page in the Google Cloud Console by visiting https://console.cloud.google.com/sql/instances.
Select the PostgreSQL instance where the database flag needs to be enabled.
Click 'Edit'.
Scroll down to the 'Flags' section.
To set a flag that has not been set on the instance before, click 'Add item', choose the flag 'log_min_duration_statement' from the drop-down menu and set a value of '-1'.
Click 'Save'.
Confirm the changes under 'Flags' on the Overview page.

From Command Line:

List all Cloud SQL database instances using the following command:

gcloud sql instances list

Configure the 'log_min_duration_statement' flag for every Cloud SQL PosgreSQL database instance using the below command:

gcloud sql instances patch --database-flags log_min_duration_statement=-1

Note: This command will overwrite all database flags previously set. To keep those and add new ones, include the values for all flags to be set on the instance; any flag not specifically included is set to its default value. For flags that do not take a value, specify the flag name followed by an equals sign ("=").