Control: 4.4.4 Ensure server parameter 'audit_log_events' has 'CONNECTION' set for MySQL Database Server

Description

Set audit_log_enabled to include CONNECTION on MySQL Servers.

Enabling CONNECTION helps MySQL Database to log items such as successful and failed connection attempts to the server. Log data can be used to identify, troubleshoot, and repair configuration errors and suboptimal performance.

Remediation

From Azure Portal

From Azure Home select the Portal Menu.
Select Azure Database for MySQL servers.
Select a database.
Under Settings, select Server parameters.
Update audit_log_enabled parameter to ON.
Update audit_log_events parameter to have at least CONNECTION checked.
Click Save.
Under Monitoring, select Diagnostic settings.
Select + Add diagnostic setting.
Provide a diagnostic setting name.
Under Categories, select MySQL Audit Logs.
Specify destination details.
Click Save.

It may take up to 10 minutes for the logs to appear in the configured destination.

Default Value

By default audit_log_events is disabled.

Usage

Run the control in your terminal:

powerpipe control run azure_compliance.control.cis_v210_4_4_4

Snapshot and share results via Turbot Pipes:

powerpipe login
powerpipe control run azure_compliance.control.cis_v210_4_4_4 --share

SQL

This control uses a named query:

select
  s.id as resource,
  case
    when lower(config -> 'ConfigurationProperties' ->> 'value') = 'connection' then 'ok'
    else 'alarm'
  end as status,
  case
    when lower(config -> 'ConfigurationProperties' ->> 'value') = 'connection' then s.name || ' server parameter audit_log_events has connection set.'
    else s.name || ' server parameter audit_log_events connection not set.'
  end as reason
  
  , s.resource_group as resource_group
  , sub.display_name as subscription
from
  azure_mysql_server as s
  cross join lateral jsonb_array_elements(server_configurations) config
  left join azure_subscription as sub on sub.subscription_id = s.subscription_id
where
  config ->> 'Name' = 'audit_log_events';