Set Maximum Connection Limits for Server and per User

FaibleNiveau 1Revue manuellemysql

Description

Limiting concurrent connections to a MySQL server can be used to reduce risk of Denial of Service (DoS) attacks performed by exhausting connection resources.

Méthode de vérification

Méthode d'audit: Revue manuelle

Cette recommandation ne peut pas être vérifiée automatiquement. Une analyse la liste avec ces instructions lorsque vous passez --include-manual.

Run SELECT VARIABLE_NAME, VARIABLE_VALUE FROM performance_schema.global_variables WHERE VARIABLE_NAME LIKE 'max_%connections'; (max_user_connections 0 = no limit) and SELECT user, host, max_user_connections FROM mysql.user WHERE user NOT LIKE 'mysql.%' AND user <> 'root'; (0 = global value applies). No server or per-user limit is a fail.

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

Set max_connections and max_user_connections under [mysqld] (SET GLOBAL to apply now) and per account with ALTER USER '<user>'@'<host>' WITH MAX_USER_CONNECTIONS <n>;

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: mysqldatabaseavailabilitymanual
Référence: CIS Oracle MySQL Community Server 8.4 Benchmark v1.1.0 - 8.3 Set Maximum Connection Limits for Server and per User