Monitoring Azure Storage Blobs
This document provides information on how to monitor your Azure Storage blobs, including using Azure Monitor, diagnostic logs, and metrics.
Why Monitor Blob Storage?
Monitoring is crucial for understanding the performance, availability, and usage patterns of your blob storage accounts. It helps in:
- Identifying performance bottlenecks.
- Detecting and diagnosing issues.
- Tracking storage capacity and usage.
- Ensuring the security and compliance of your data.
- Optimizing costs.
Azure Monitor for Blob Storage
Azure Monitor is the primary service for collecting, analyzing, and acting on telemetry from your Azure and on-premises environments. For Blob Storage, Azure Monitor provides:
- Metrics: Time-series data representing performance and usage metrics.
- Logs: Diagnostic logs that provide detailed information about requests made to your storage account.
Key Metrics
Some commonly used metrics for Blob Storage include:
Transactions: Number of successful and failed requests.IngressandEgress: Amount of data written to and read from the storage account.Availability: Percentage of time the storage account was available.Latency: Time taken for requests to be processed.
You can view these metrics in the Azure portal under the Metrics blade of your storage account. You can also query them using the Azure Monitor REST API, PowerShell, or Azure CLI.
Diagnostic Logs
Diagnostic logs capture detailed information about requests made to your storage account. These logs are invaluable for troubleshooting and auditing.
To enable diagnostic logs:
- Navigate to your storage account in the Azure portal.
- Under the Monitoring section, select Diagnostic settings.
- Click Add diagnostic setting.
- Select the log categories you want to collect (e.g.,
StorageRead,StorageWrite,StorageDelete). - Choose a destination for the logs, such as a Log Analytics workspace, Azure Storage account, or Event Hubs.
Once enabled, you can query these logs using Log Analytics.
Log Analytics Queries
Here's an example Kusto Query Language (KQL) query to find the total number of read operations for a specific storage account in the last 24 hours:
AzureDiagnostics
| where ResourceProvider == "MICROSOFT.STORAGE" and ResourceType == "STORAGEACCOUNTS"
| where Category == "StorageRead"
| where AccountName == "yourstorageaccountname"
| summarize count() by bin(TimeGenerated, 1h)
| render timechart
Remember to replace yourstorageaccountname with the actual name of your storage account.
Alerting
Azure Monitor allows you to create alerts based on metrics or log events. This enables you to be proactively notified when certain conditions are met.
For example, you can set up an alert to notify you if:
- The number of failed requests exceeds a certain threshold.
- Storage utilization reaches a critical level.
- Latency increases significantly.
Third-Party Monitoring Tools
In addition to Azure Monitor, several third-party tools can provide advanced monitoring capabilities for Azure Storage. These tools often offer:
- Customizable dashboards and reporting.
- Automated analysis and anomaly detection.
- Integration with other IT management systems.