Learn how to rapidly debug and fix the popular application frameworks (ASP.NET, classic ASP and PHP) on Microsoft Internet Information Services 7. This session covers the basics of health monitoring and some tips and tricks that developers need to know to resolve their issues faster

2. IIS7: A brief tour
Diagnostics drilldown
Best practices and patterns

3. Opt-in modular architecture with new
1.
extensibility model
Reliable, high performance PHP hosting
2.
alongside ASP.NET hosting
Easy-to-use XML-based configuration
3.
system
Powerful secure remote, delegated
4.
administration
Diagnostic tools for troubleshooting
5.

4. Publishing
Application Health and FTPServer
Security
Development Diagnostics FTP Management
WebDavModule
AnonymousAuthentication .NET Extensibility
Performance
HttpLogging
BasicAuthentication
ISAPIFilter
DigestAuthentication StaticCompression
CustomLogging
ISAPIExtension
WindowsAuthentication
DynamicCompression
CGI RequestMonitor
UrlAuthorization
FastCGI
CertificateMapping HttpTracing
ServerSideIncludes
ADCertificateMapping
Management
ODBCLogging
ASP
RequestFiltering
Management Console
LoggingLibraries
ASP.Net
IPRestriction
Management Scripting
Core HTTP Server Components Mgmt Service (WMSVC)
IIS6 Config (Metabase)
DirBrowsing HttpRedirect DefaultDoc CustomErrors StaticFile
IIS6 WMI Provider
Process Model (Windows Process Activation Service) IIS6Scripting
ProcessModel .Net Environment Configuration API IIS6 Management Snap-in

5. Componentized
server
Basic
40+
Pluggable
HTTP HTTP
HTTP HTTP Request Response
Request Response
modular
Authentication
functionality
...
Authentication
Small generic
Determine
NTLM Basic Anon
request pipeline
Handler
Url
Authorization
Authz
...
Enables
ResolveCache Output
SendResponse
Cache
... CGI
Lightweight
servers
Static
ExecuteHandler File
Custom /
Forward
specialized
ISAPI
er
...
servers
Integrated mode
UpdateCache
ASP.NET
SendResponse
Compre
Log
ssion
membership,
forms
authentication,
and Login controls

6. Windows Server hosting for PHP or any other FastCGI-
compliance framework along with ASP.NET
Built-in FastCGI optimized for high performance and
reliability for non-thread safe PHP proceses
Reuses CGI processes for multiple requests
25x faster than standard CGI
Fully tested against latest PHP.NET builds (PHP 5.2.1)
Plugs into IIS diagnostics before the requests enters and
once the request leaves the PHP engine
Host Multiple Versions of PHP Side by Side
Easily host PHP4 and PHP5 on the same server

7. Powerful, XML-file based Management
Easily copy configuration from server to server
Use environment variables to abstract physical paths
Enable Farms of Stateless Front-End Web
Servers
Share IIS configuration on central UNC share
Quickly XCopy deploy apps
Distributed Web.config files (IIS and ASP.NET config)
live with content
Can be local or remote UNC path
Separate, scoped config file for each AppPool
built-in
Process isolation for each new site by default

8. New .NET API:
Microsoft.Web.Administration
Remoteable through COM interface
PowerShell support
Delegate Management to Site Owners
Manage with Remote Administration Tool
Supports Vista, Windows 2003, XP
Secure, firewall-friendly connection over
HTTP/SSL
Authenticates both Windows and non-Windows
credentials

9. Modularity | Configuration | PHP
Hosting | Xcopy Deployment for an
ASP.NET application

10. Tools Event Monitor
Browser
AppCmd Command-Line
Logs
IIS7 Manager
utility
Platform
Performance
Detailed RSCA
ETW Tracing
Counters
Errors
ASP.NET
Failed Process
Trace
Request Orphaning
integration
Tracing

11. Production Bug
Development Functional testing
Fixing
• Detailed errors • Detailed errors • Runtime State and
• Failed request • Failed request Controls API
(RSCA)
tracing tracing
• Event Tracing for
• ASP.NET integrated • Performance
Windows (ETW)
tracing monitors
tracing
• Web Capacity
• Failed request
Analysis Tool
tracing
(WCAT) for stress
• Performance
testing
• Orphan failed counters
• DebugDiag
processes for
• Orphan failed
debugging
processes for
debugging

12. Don’t assume something is happening.
Do get facts.
Performance counters, event counters,
FREB logs, RSCA
Don’t go down the “switch this setting
and see”. Do find the root cause, and
then resolve the problem there.
FREB, detailed errors, RSCA
Do isolate the problem.
FREB, detailed errors, trace events

13. Detailed error messages
1.
Failed Request Tracing
2.
Tracing integration
3.

14. Uniquely identify most IIS 7.0 web server and
module error conditions
Unique response status / sub-status codes
Logged in site logs and shown in detailed error
Provide rich information to understand and resolve
the error
Module, pipeline stage, win32 error code, etc.
Lists possible causes, and things you can try
Provides error message security
By default, detailed errors sent only to localhost
Can configure to send to all clients
Can configure custom errors from file, URL, or redirect
ASP.NET custom errors override IIS custom errors

15. Error Cause Resolution
500.19 Wrong configuration section syntax Config File shows the file and line
(elements, attributes, attribute value type) of the error in configuration file.
You are requesting a script that doesn’t
404.3 Install the corresponding
have the associated application framework framework to resolve this.
installed. OR OR
You are requesting a static file which is not Add the extension to the MIME
registered as a static file. Types in IIS Manager
404.1 This error occurs whenever no suitable For anonymous web sites, enable
authentication method is configured (your anonymous authentication.
site does not enable any authentication OR
methods or the browser does not support Enable other authentication
the authentication methods you have methods that your client supports.
configured).

17. Enable no-repro instrumentation for failed
requests
Allow for custom failure definitions per URL
Time taken, status/substatus codes
Enable per-URL trace configuration
Allow me to define what to trace per URL
Persist failure log files beyond process lifetime
Common scenarios:
Request takes too long/hangs -> very common today
Request error -> request completes, but with error
status code
Authentication/Authorization problems
Server 500 errors

19. ASP.NET page traces for integration into
Failed Request Trace logging
System.Diagnostics.Trace
Capture tracing information from .NET
components
Configure trace sources to control specific
application tracing information
ASP.NET Health Monitoring events
Correlate and analyze application tracing
information in the context of the overall
request

21. Process orphaning for failed applications through
Advanced Settings on app pools (or
orphanActionExe in config)
Rapid Fail Protection (RFP) occurs when app pool
fails X times in Y minutes (configurable)
ETW tracing for Windows for extensive logging
RSCA lets you view requests that are in-flight
DebugDiag for performance related issues
including high and low CPU Hangs (slow
response), process termination, memory leaks

22. Use request log files to find error
patterns and offending URLS
Consider using process orphaning
Use ASP.NET health monitoring to
receive configurable alerts about errors
Use WCAT to stress application before
product
Use design patterns in the
Performance Tuning whitepaper (add
link)

23. Enable Output Caching for semi-dynamic pages
Set IIS worker processes in Wow64 mode in per-
AppPool settings
If you * script-mapped all requests to ASP.NET in
IIS6, Integrated Pipeline is much faster than an
IIS6 * scriptmap solution. Try together with IIS7
URL Authorization.
Put your high traffic document on top of the
Default Documents list. Static default documents
are cached in kernel-mode

24. Use Failed Request Tracing to capture
hard-to-repro errors
Set fine-grained Failed Request
Tracing rules to keep your log history
valid
Don’t use IISReset, recycle apppools
Check key performance counters for
clues on application health
Example: GC-related performance
counters

25. Web-based release channel
Free for download, www.iis.net
Agile release model
Q1 2008: Secure FTP server, WebDav,
Remote Manager for IIS7, Media Pack (Bit
Rate Throttling)
Built using the new IIS7 extensibility
platform
After setup, fully integrated into IIS admin
Fully serviced and supported on Windows
Server 2008

26. Home for the IIS Technical Community!
In-depth technical articles and samples
Connect with other IIS experts on blogs & forums
Free advice and assistance in forums
Download center with IIS extensions

27. New IIS7 platform
Modular architecture
First class PHP support
XML based configuration
Remote mgmt
Diagnostic toolset
Diagnostic tools suited to initial development or
troubleshooting
Wide set of tools for troubleshooting and diagnostics.
Narrow down root cause with Detailed Errors and
Failed Request Tracing
Any questions or comments? Contact: mailant@microsoft.com

28. © 2008 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market
conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation.
MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.