Since I cannot access the MySQL documentation content from the provided URL, I’ll create a standard MySQL database connection guide following the same format as the BigQuery documentation: 
# Connecting MySQL to Index

To establish a connection between Index and your MySQL database, you'll need to configure a dedicated user account with appropriate permissions.

## Connection Requirements

To successfully connect, you'll need these essential pieces of information:
- Host URL
- Port Number
- Database Name
- Username
- Password

**Host Format Example:**
```text
mysql.your-domain.com
Port Format Example: 
3306
Database Name Example: 
production_db

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User Account Setup Guide

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Creating Your MySQL User

  1. Connect to MySQL as root or an admin user
  2. Create a new user with the following command:
CREATE USER 'index_user'@'%' IDENTIFIED BY 'your_secure_password';

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Configuring Permissions

Grant the necessary permissions to your new user: 
GRANT SELECT ON database_name.* TO 'index_user'@'%';
FLUSH PRIVILEGES;

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Required Permissions

At minimum, the user account needs:
  • SELECT privilege on required tables
  • SHOW VIEW privilege (if using views)
  • SHOW DATABASES privilege

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Network Configuration

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Firewall Settings

Ensure your MySQL server accepts connections from Index’s IP addresses:
  • Configure your firewall rules
  • Update MySQL’s bind-address if needed
  • Verify port 3306 is accessible

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SSL/TLS Configuration

If using SSL/TLS encryption:
  • Enable SSL in your MySQL server
  • Provide the CA certificate if required
  • Configure SSL mode in connection settings

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Common Issues

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Connection Timeout

If you encounter connection timeouts:
  • Verify the host and port are correct
  • Check firewall rules
  • Confirm network connectivity

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Access Denied

If you see “Access Denied” errors:
  • Verify username and password
  • Check user permissions
  • Confirm the user’s host matching pattern

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SSL/TLS Issues

For SSL-related errors:
  • Verify SSL is properly configured
  • Check certificate validity
  • Confirm SSL requirements match server configuration