القائمة
Ensure That the 'Log_min_messages' Flag for a Cloud SQL PostgreSQL Instance Is Set at Minimum to 'Warning'
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| name | cis-gcp-foundations-6.2.5 |
| description | Ensure That the 'Log_min_messages' Flag for a Cloud SQL PostgreSQL Instance Is Set at Minimum to 'Warning' |
| category | cis-gcp-foundations |
| version | 4.0.0 |
| author | cyberstrike-official |
| tags | ["cis","gcp","cloud-sql","postgresql"] |
| cis_id | 6.2.5 |
| cis_benchmark | CIS Google Cloud Platform Foundation Benchmark v4.0.0 |
| tech_stack | ["gcp"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
The log_min_messages flag defines the minimum message severity level that is considered as an error statement. Messages for error statements are logged with the SQL statement. Valid values include (from lowest to highest severity) DEBUG5, DEBUG4, DEBUG3, DEBUG2, DEBUG1, INFO, NOTICE, WARNING, ERROR, LOG, FATAL, and PANIC. Each severity level includes the subsequent levels mentioned above. ERROR is considered the best practice setting. Changes should only be made in accordance with the organization's logging policy.
Auditing helps in troubleshooting operational problems and also permits forensic analysis. If log_min_messages is not set to the correct value, messages may not be classified as error messages appropriately. Setting the threshold to 'Warning' will log messages for the most needed error messages.
This recommendation is applicable to PostgreSQL database instances.
Setting the threshold too low will might result in increased log storage size and length, making it difficult to find actual errors. Higher severity levels may cause errors needed to troubleshoot to not be logged. An organization will need to decide their own threshold for logging log_min_messages flag.
Note: To effectively turn off logging failing statements, set this parameter to PANIC.
Instance Overview page.Configuration card.Database flags, check the value of log_min_messages flag is set to warning or higher (WARNING|ERROR|LOG|FATAL|PANIC).log_min_messages is set to or higher.warninggcloud sql instances describe [INSTANCE_NAME] --format=json | jq '.settings.databaseFlags[] | select(.name=="log_min_messages")|.value'
Edit.Flags section.Add a Database Flag, choose the flag log_min_messages from the drop-down menu and set appropriate value.Save to save the changes.Flags on the Overview page.log_min_messages database flag for every Cloud SQL PosgreSQL database instance using the below command.gcloud sql instances patch <INSTANCE_NAME> --database-flags log_min_messages=<DEBUG5|DEBUG4|DEBUG3|DEBUG2|DEBUG1|INFO|NOTICE|WARNING|ERROR|LOG|FATAL|PANIC>
Note: This command will overwrite all database flags previously set. To keep those and add new ones, include the values for all flags you want 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 ("=").
By default log_min_messages is ERROR.
WARNING: This patch modifies database flag values, which may require your instance to be restarted. Check the list of supported flags - https://cloud.google.com/sql/docs/postgres/flags - to see if your instance will be restarted when this patch is submitted.
Note: Some database flag settings can affect instance availability or stability and remove the instance from the Cloud SQL SLA. For information about these flags, see Operational Guidelines.
Note: Configuring the above flag does not require restarting the Cloud SQL instance.
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v8 | 8.5 Collect Detailed Audit Logs | x | x | |
| v7 | 6.3 Enable Detailed Logging | x | x |