GCP PostgreSQL instance database flag log_executor_stats is not set to off misconfiguration detected

Rule Details

Cortex AppSec Rule ID	APPSEC2_GCP_14
Category - Subcategory	Logging - Disabled or missing
Provider	GCP
Severity	LOW
Framework	Terraform, Terraform Plan
Mapped CSPM/KSPM Rule	2800da7f-6c99-4432-8fe3-555614547005

Impact

This rule is checking to make sure that the 'log_executor_stats' flag is set to 'off' for PostgreSQL databases in Google Cloud Platform (GCP). The 'log_executor_stats' flag, when enabled, logs information about the performance of the executor stage of query execution in PostgreSQL. While this information can be useful for performance tuning, it can also generate a significant amount of log data, potentially leading to increased storage costs and making important log entries harder to find. Therefore, unless this level of logging is necessary, the rule suggests setting this flag to 'off' to discourage unnecessary logging.

How to Fix

Resource: google_sql_database_instance

• Arguments: settings.database_flags

To fix this issue, you should set the 'log_executor_stats' flag value to 'off' for PostgreSQL database instances in your Terraform configuration. Before disabling, understand that this flag can provide useful metrics but may add extra overhead, so it's important to balance your needs accordingly.

[source,hcl]

resource "google_sql_database_instance" "default" {
 project = "my-gcp-project"
 name = "my-database"
 region = "us-central1"

 settings {
 tier = "db-f1-micro"

 database_flags {
 name = "log_executor_stats"
 value = "off"
 }
 }
}

The above code block configures a Google Cloud SQL PostgreSQL database instance with the 'log_executor_stats' flag set to 'off'. This will ensure that executor-level statistics for each query are not in the database log, thereby meeting the Cortex Cloud AppSec rule requirements, reducing unnecessary overhead, and potentially improving performance.