Hosting PHP on IIS 7.0 Best Practices for shared hosting
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1 Hosting PHP on IIS 7.0 Best Practices for shared hosting Microsoft® Hosting Deployment Accelerator
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Hosting PHP on IIS 7.0 Best Practices for shared hosting. Microsoft® Hosting Deployment Accelerator. Agenda. PHP Setup FastCGI architecture Hosting guidance Multiple PHP versions Per-site PHP configuration Providing URL rewriting Managing CPU usage Summary. PHP setup steps. - PowerPoint PPT Presentation
Transcript of Hosting PHP on IIS 7.0 Best Practices for shared hosting
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Hosting PHP on IIS 7.0Best Practices for shared hosting
Microsoft®
Hosting Deployment Accelerator
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Agenda
PHP SetupFastCGI architectureHosting guidance
Multiple PHP versionsPer-site PHP configurationProviding URL rewritingManaging CPU usage
Summary
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PHP setup steps
Copy binaries •Use zip file with non-thread safe binaries•Alternatively - download PHP installer
Configure php.ini•fastcgi.impersonate = 1•cgi.fix_pathinfo = 1•open_basedir = “C:\Websites\”
Configure IIS•Enable CGI•Configure FastCGI handler mapping for *.php•Change FastCGI settings
Test that it works •C:\php\php-cgi.exe –info•http://localhost/phpinfo.php
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FastCGI process pool for PHP5
FastCGI Handler Architecture
IIS Worker Process
Read Configuration
Authenticate
Authorize
Map Request
Handle Request
Send Response
Log Request
FastCGI protocol over named pipes or TCP
FastCGI
ASP.NET
Static
Request queue
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App Pool #1 (user1)
Web site #1
Recommended configuration
FastCGI Process Pool
… …
App Pool #2 (user2)
Web site #2
FastCGI Process Pool
App Pool #N (userN)
Web site #N
FastCGI Process pool
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Recommended configuration
Configure security isolationOne app pool per web siteEnable FastCGI impersonation
Prevent failures caused by PHP recyclingset PHP_FCGI_MAX_REQUESTS >= instanceMaxRequests
For higher site density:use dynamicIdleThresholdreduce idleTimeoutreduce maxInstances (may affect performance)
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Enhance your PHP hosting offer
Allow customers to choose PHP version
• Support both PHP 4.X and 5.X on the same server
Provide your customers with flexibility of changing PHP configuration
• Enable hosting of PHP apps that require tweaks to php.ini
Easily enable sub-domains
• Use URL rewrite module to implement sub-domains support
Provide URL rewriting functionality
• Expose rich set of IIS tools for creating and testing of rewrite rules
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Multiple PHP versions
App Pool #1 (user1)
Web site #1
Process Pool for PHP 5
App Pool #2 (user2)
Web site #2
Process Pool for PHP 4
C:\PHP526\php-cgi.exe
C:\PHP447\php.exe
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Per-site PHP configurationConfiguring FastCGI process pool
<fastCgi> <application fullPath="C:\PHP\php-cgi.exe" arguments="-d my.website=website1"> <environmentVariables> <environmentVariable name="PHPRC" value="C:\WebSites\website1" /> </environmentVariables> </application></fastCgi>
Combination of fullPath and arguments uniquely identify FastCGI process pool definition
PHPRC environment variable contains path to the php.ini file
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Per-site PHP configurationConfiguring Handler Mapping
<system.webServer> <handlers accessPolicy="Read, Script"> <add name="PHP via FastCGI" path="*.php" verb="*" modules="FastCgiModule" scriptProcessor="C:\PHP\php-cgi.exe|-d my.website=website2" resourceType="Unspecified" requireAccess="Script" /> </handlers></system.webServer>
Reference FastCGI process pool by concatenating [fullPath]|[arguments]
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Providing URL rewriting
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Manage CPU utilizationWindows Server Resource Manager (WSRM)
Available in all SKU’s of WS2008Ensures that process gets *at least* the configured CPU percentageKicks in only if overall CPU load is more than 70%
IIS team tested with 4000 web sites
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Using WSRM
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Best practices summary
Follow IIS 7.0 security isolation guidelinesLeverage FastCGI/IIS features to enhance hosting offer:
Multiple PHP versionsPer-site PHP configurationURL rewriting
Use WSRM to manage w3wp.exe and php-cgi.exe CPU utilization
More information at http://learn.iis.net/page.aspx/208/fastcgi-with-php
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Q & A
