Troubleshooting Azure Database for MariaDB

This section provides guidance on troubleshooting common issues you might encounter when working with Azure Database for MariaDB.

Common Issues and Solutions

1. Connection Problems

Difficulty connecting to your Azure Database for MariaDB instance.

• Ensure firewall rules are correctly configured to allow access from your IP address or virtual network.
• Verify that the server name, username, and password are correct.
• Check network connectivity from your client to the Azure region where the server is hosted.
• For private endpoints, ensure DNS resolution is set up correctly.

See the Connection troubleshooting guide for more details.

2. Performance Degradation

Slow query execution or overall database performance issues.

• Monitor server metrics like CPU, Memory, and IO utilization using Azure portal.
• Analyze slow queries using the Performance Insights feature.
• Optimize your application queries and database schema.
• Consider scaling up compute or storage resources if needed.
• Review and adjust server parameters that might impact performance.

3. High Availability and Disaster Recovery (HADR) Issues

Problems related to read replicas, geo-replication, or automatic failover.

• Verify the status of your read replicas and geo-replication links.
• Ensure sufficient storage is available for replication.
• Understand the failover process and test it regularly.

4. Storage and Scaling Challenges

Running out of storage space or needing to adjust performance tiers.

• Monitor storage usage and set up alerts for high utilization.
• Plan for storage growth and consider using auto-grow options.
• Understand the implications of scaling up or down compute and storage.

5. Security and Access Control

Authentication or authorization failures.

• Ensure the correct database user roles and permissions are assigned.
• Review Active Directory authentication configurations if used.
• Check SSL/TLS settings for secure connections.

Troubleshooting Tools

Leverage the following tools for diagnosing issues:

• Azure Portal: For monitoring metrics, performance insights, and resource management.
• Query Performance Insight: Helps identify top-running queries and their resource consumption.
• Azure Monitor: Provides comprehensive logging and alerting capabilities.
• Client-side tools: `mysql` command-line client, MySQL Workbench, and other compatible tools.

Further Resources

• Azure Database for MariaDB Known Issues
• Azure Support Options
• Community Forums