What is Azure Diagnostics

Azure Diagnostics is the capability within Azure that enables the collection of diagnostic data on a deployed application. You can use the diagnostics extension from a number of different sources. Currently supported are Azure Cloud Service Web and Worker Roles, Azure Virtual Machines running Microsoft Windows and Service Fabric. Other Azure services have their own separate diagnostics.

Data you can collect

Azure Diagnostics can collect the following types of data:

Data Source Description
Performance counters Operating System and custom performance counters
Application Logs Trace messages written by your application
Windows Event logs Information sent to the Windows event logging system
.NET Event Source Code writing events using the .NET EventSource class
IIS Logs Information about IIS web sites
Manifest based ETW Event Tracing for Windows events generated by any process
Crash dumps Information about the state of the process in the event of an application crash
Custom error logs Logs created by your application or service
Azure Diagnostic infrastructure logs Information about Diagnostics itself

The Azure diagnostics extension can transfer this data to an Azure storage account or send it to services like Application Insights. You can use the data for debugging and troubleshooting, measuring performance, monitoring resource usage, traffic analysis and capacity planning, and auditing.


See Azure Diagnostics Versioning History.

Next steps

Choose which service you are trying to collect diagnostics on and use the following articles to get started. Use the general Azure diagnostics links for reference for specific tasks.

Web Apps

Note that Web Apps do not use Azure Diagnostics. Find the equivalent information at Web Apps

Cloud Services using Azure Diagnostics

For more advanced topics, see

Virtual Machines using Azure Diagnostics

For more advanced topics, see

Service Fabric using Azure Diagnostics

Get started at Monitor a Service Fabric application. Many other Service Fabric diagnostics articles are available in the navigation tree on the left once you get to this article.

General Azure Diagnostics articles