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Documentation Home
MySQL 9.7 Reference Manual
Preface and Legal Notices
General Information
Installing MySQL
Upgrading MySQL
Downgrading MySQL
Tutorial
MySQL Programs
MySQL Server Administration
The MySQL Server
Configuring the Server
Server Configuration Defaults
Server Configuration Validation
Server Option, System Variable, and Status Variable Reference
Server System Variable Reference
Server Status Variable Reference
Server Command Options
Server System Variables
Using System Variables
System Variable Privileges
Dynamic System Variables
Persisted System Variables
Nonpersistible and Persist-Restricted System Variables
Structured System Variables
Server Status Variables
Server SQL Modes
Connection Management
Connection Interfaces
Administrative Connection Management
DNS Lookups and the Host Cache
IPv6 Support
Verifying System Support for IPv6
Configuring the MySQL Server to Permit IPv6 Connections
Connecting Using the IPv6 Local Host Address
Connecting Using IPv6 Nonlocal Host Addresses
Obtaining an IPv6 Address from a Broker
Network Namespace Support
MySQL Server Time Zone Support
Resource Groups
Server-Side Help Support
Server Tracking of Client Session State
The Server Shutdown Process
The MySQL Data Directory
The mysql System Schema
MySQL Server Logs
Selecting General Query Log and Slow Query Log Output Destinations
The Error Log
Error Log Configuration
Default Error Log Destination Configuration
Error Event Fields
Types of Error Log Filtering
Priority-Based Error Log Filtering (log_filter_internal)
Rule-Based Error Log Filtering (log_filter_dragnet)
Error Logging in JSON Format