Diagnostics.wadcfg Web/app.config Wad-control-container IsDefault=True Deploy CSPKG.

Boris SchollSr. Lead Program Manager – Cloud Platform Tools

[email protected]

Diagnosing issues with Cloud applications hosted in Azure using Visual Studio

3-581

Windows Azure Cloud Service Windows Azure Virtual machinesWindows Azure Web SitesDemos, Demos, Demos

Agenda

Azure Diagnostics Remote Debugging IntelliTrace / Profiler Troubleshooting Demo

Cloud Services

What are we going to cover?

Implement application logging and tracing Good entry level tracing and logging Uses System.Diagnostics and Azure diagnostics

trace listener Windows Event logs on guest OS IIS logs

IIS logs Failed request logs

Performance Counters Crash dumps Custom logs Azure Infrastructure logs

Azure DiagnosticsWhat should I use it for?

WAD Architecture – Configuration

Diagnostics.wadcfg

Diagnostics Agent

Diagnostics.wadcfg

Diagnostics Agent

wad-control-container

Web/app.config

Web/app.config

IN_0

Wad-control-container

IsDefault=True

Visual Studio

Deploy CSPKG

WAD Architecture – Config Precedence

wad-control-container Blob

Highest precedence Default polling interval is once per minute.

Imperative code

• RoleInstanceDiagnosticManager.SetCurrentConfiguration()

• DiagnosticMonitor.Start()

Diagnostics.wadcfg file

Web Role Bin Directory under rootWorker Role Root Directory

Default configuration

Troubleshooting a Cloud Service using Visual Studio

MSVSMON running on Cloud Service Instances Packaged as a plug in Needs to be enabled during publish Debugging connection is secured using certs

Debugging functionality Attach at role or instance level Attach to any process Interop and native debugging Use familiar VS debugging features

Cloud Service - Remote Debugging

What is it and what can I use it for?

Debugging a Cloud Service

Enablement Both options are enabled during publish Agents are mutually exclusive

IntelliTrace (VS Ultimate) Rewind/replay program execution in the debugger Captures WaIIShost.exe and w3wp.exe events Great for chasing down logical errors Great for detecting missing assemblies*

Profiler (VS Pro) Analyze performance issues and bottlenecks Detect inefficient algorithms

Cloud Service - IntelliTrace/Profiler

What can I use it for?

Logging and Tracing Remote Debugging Application Insights Profiling Troubleshooting Demo

Virtual machines

What are we going to cover?

ETW based semantic logging

MSVSMON running on Azure virtual machines Applied as an extension Debugging connection is secured using certs Remote Desktop needs to be enabled

Debugging functionality Attach to any process Interop and native debugging Use familiar VS debugging features

Virtual machine - Remote Debugging

What is it and what can I use it for?

Remote Debugging a virtual machine

Check availability of an application Health Dashboards

Is the application and available and performing for users? Check application performance

Notifications and deep insight Shows performance problems, memory usage and

exceptions Check if the application is succeeding

Usage dashboard Shows usage patterns and top features

Applications Insights

What can I use it for?

Profiler needs to be installed manually Install Remote Tools for Visual Studio (make sure

you grab the right version) Use the VSInstr command line tool to generate

instrumented binaries. Use the VSPerfCLREnv tool to set the environment

variables to collect .NET profiling data. Use the VSPerfCmd tool to collect profiling data. Use the VSPerfReport tool to generate file-based

reports of the profiling data.

Virtual machine - ProfilerWhat is it and what can I use it for?

Web Site Diagnostics Remote Debugging Troubleshooting Demo

Web Sites

What are we going to cover?

Configure Diagnostics Enable Web Server Logging Enable Detailed Error Messages Enable Failed Request Logging Enable Application Logging (System.Diagnostics) Enable Streaming logs

View Diagnostics Data Visual Studio Azure Storage tools Server Explorer

Web Site Diagnostics

What can I use it for?

Web Site Debugging VS 2012 and VS 2013 support Automatic and manual connect

Debugging functionality Automatically attached to w3wp.exe Use familiar VS debugging features

Web Site- Remote Debugging

What is it and what can I use it for?

Visual Studio provides a great set of diagnostics tools

Diagnostics is a key investment area

Application Insights is a powerful service

Investments are made across compute containers

Summary

Takeaways

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