MySQL on Azure Flex metrics and alerts
Published 01 September 2025
This documentation contains a list of metrics and alerts that are available when monitoring MySQL on Azure Flex instances.
If you can't find a specific metric or alert you would like to use when monitoring your Azure Flex instances, send us feedback.
Azure Flex host metrics
To get access to machine metrics in Azure Flex you need to provide Redgate Monitor with your Azure API credentials.
The following table summarizes the host metrics that Redgate Monitor can collect, for Azure Flex servers, only if Azure Enhanced Monitoring is enabled for your Azure Flex instances:
Machine: processor time |
Machine: memory used |
Network utilization |
Metrics
The following lists the metrics Redgate Monitor collects and exposes on the Analysis page:
MySQL on Azure Flex metrics
Available at the instance level:
Connections / sec | Buffer pool wait free events / sec |
Connection errors / sec | Deadlocks / sec |
Threads connected | Lock waiting time / sec |
Threads running | Pending data reads |
Queries / sec | Pending data writes |
Query errors / sec | Pending fsyncs operations |
Bytes read / sec | Full index scans / sec |
Bytes written / sec | Full table scans rows read / sec |
Transactions begun / sec | Full table scans / sec |
Transactions committed / sec | Index scan rows read / sec |
Transactions rolled-back / sec | Joins performing full table scan / sec |
Prepared statement execution ratio | Joins performing a range check / sec |
Number of cached prepared statements | Seeks / sec |
Buffer pool cache hit ratio | Queries waiting for a lock / sec |
Buffer pool percentage free | Sort operations / sec |
Buffer pool percentage dirty |
|
Alerts
The following is a list of alerts available for MySQL on Azure Flex:
- MySQL specific alerts
- Database instance error log entry
- Instance unreachable
- Long-running query
- Monitoring stopped (instance credentials)
- Monitoring error (instance data collection)
- Host alerts
- Internal Redgate Monitor error (host)
- Monitoring error (host data collection)
- Monitoring stopped (host credentials)
- Physical memory
- Processor under-utilization
- Processor utilization
- MySQL specific alerts
