WebAppPool

WebAppPool

Parameters

Parameter	Attribute	DataType	Description	Allowed Values
Name	Key	String	Indicates the application pool name. The value must contain between 1 and 64 characters.
Ensure	Write	String	Indicates if the application pool exists. Set this property to Absent to ensure that the application pool does not exist. Setting it to Present (the default value) ensures that the application pool exists.	Present, Absent
State	Write	String	Indicates the state of the application pool. The values that are allowed for this property are: Started, Stopped.	Started, Stopped
autoStart	Write	Boolean	When set to true, indicates to the World Wide Web Publishing Service (W3SVC) that the application pool should be automatically started when it is created or when IIS is started.
CLRConfigFile	Write	String	Indicates the .NET configuration file for the application pool.
enable32BitAppOnWin64	Write	Boolean	When set to true, enables a 32-bit application to run on a computer that runs a 64-bit version of Windows.
enableConfigurationOverride	Write	Boolean	When set to true, indicates that delegated settings in Web.config files will processed for applications within this application pool. When set to false, all settings in Web.config files will be ignored for this application pool.
managedPipelineMode	Write	String	Indicates the request-processing mode that is used to process requests for managed content. The values that are allowed for this property are: Integrated, Classic.	Integrated, Classic
managedRuntimeLoader	Write	String	Indicates the managed loader to use for pre-loading the application pool.
managedRuntimeVersion	Write	String	Indicates the CLR version to be used by the application pool. The values that are allowed for this property are: v4.0, v2.0, and ''.	v4.0, v2.0, ``
passAnonymousToken	Write	Boolean	When set to true, the Windows Process Activation Service (WAS) creates and passes a token for the built-in IUSR anonymous user account to the Anonymous authentication module. The Anonymous authentication module uses the token to impersonate the built-in account. When this property is set to false, the token will not be passed.
startMode	Write	String	Indicates the startup type for the application pool. The values that are allowed for this property are: OnDemand, AlwaysRunning.	OnDemand, AlwaysRunning
queueLength	Write	UInt32	Indicates the maximum number of requests that HTTP.sys will queue for the application pool. The value must be a valid integer between 10 and 65535.
cpuAction	Write	String	Configures the action that IIS takes when a worker process exceeds its configured CPU limit. The values that are allowed for this property are: NoAction, KillW3wp, Throttle, and ThrottleUnderLoad.	NoAction, KillW3wp, Throttle, ThrottleUnderLoad
cpuLimit	Write	UInt32	Configures the maximum percentage of CPU time (in 1/1000ths of one percent) that the worker processes in the application pool are allowed to consume over a period of time as indicated by the cpuResetInterval property. The value must be a valid integer between 0 and 100000.
cpuResetInterval	Write	String	Indicates the reset period (in minutes) for CPU monitoring and throttling limits on the application pool. The value must be a string representation of a TimeSpan value. The valid range (in minutes) is 0 to 1440. Setting the value of this property to 0 disables CPU monitoring.
cpuSmpAffinitized	Write	Boolean	Indicates whether a particular worker process assigned to the application pool should also be assigned to a given CPU.
cpuSmpProcessorAffinityMask	Write	UInt32	Indicates the hexadecimal processor mask for multi-processor computers, which indicates to which CPU the worker processes in the application pool should be bound. Before this property takes effect, the cpuSmpAffinitized property must be set to true for the application pool. The value must be a valid integer between 0 and 4294967295.
cpuSmpProcessorAffinityMask2	Write	UInt32	Indicates the high-order DWORD hexadecimal processor mask for 64-bit multi-processor computers, which indicates to which CPU the worker processes in the application pool should be bound. Before this property takes effect, the cpuSmpAffinitized property must be set to true for the application pool. The value must be a valid integer between 0 and 4294967295.
identityType	Write	String	Indicates the account identity under which the application pool runs. The values that are allowed for this property are: ApplicationPoolIdentity, LocalService, LocalSystem, NetworkService, and SpecificUser.	ApplicationPoolIdentity, LocalService, LocalSystem, NetworkService, SpecificUser
Credential	Write	PSCredential	Indicates the custom account crededentials. This property is only valid when the identityType property is set to SpecificUser.
idleTimeout	Write	String	Indicates the amount of time (in minutes) a worker process will remain idle before it shuts down. The value must be a string representation of a TimeSpan value and must be less than the restartTimeLimit property value. The valid range (in minutes) is 0 to 43200.
idleTimeoutAction	Write	String	Indicates the action to perform when the idle timeout duration has been reached. The values that are allowed for this property are: Terminate, Suspend.	Terminate, Suspend
loadUserProfile	Write	Boolean	Indicates whether IIS loads the user profile for the application pool identity.
logEventOnProcessModel	Write	String	Indicates that IIS should generate an event log entry for each occurrence of the specified process model events.
logonType	Write	String	Indicates the logon type for the process identity. The values that are allowed for this property are: LogonBatch, LogonService.	LogonBatch, LogonService
manualGroupMembership	Write	Boolean	Indicates whether the IIS_IUSRS group Security Identifier (SID) is added to the worker process token.
maxProcesses	Write	UInt32	Indicates the maximum number of worker processes that would be used for the application pool. The value must be a valid integer between 0 and 2147483647.
pingingEnabled	Write	Boolean	Indicates whether pinging (health monitoring) is enabled for the worker process(es) serving this application pool.
pingInterval	Write	String	Indicates the period of time (in seconds) between health monitoring pings sent to the worker process(es) serving this application pool. The value must be a string representation of a TimeSpan value. The valid range (in seconds) is 1 to 4294967.
pingResponseTime	Write	String	Indicates the maximum time (in seconds) that a worker process is given to respond to a health monitoring ping. The value must be a string representation of a TimeSpan value. The valid range (in seconds) is 1 to 4294967.
setProfileEnvironment	Write	Boolean	Indicates the environment to be set based on the user profile for the new process.
shutdownTimeLimit	Write	String	Indicates the period of time (in seconds) a worker process is given to finish processing requests and shut down. The value must be a string representation of a TimeSpan value. The valid range (in seconds) is 1 to 4294967.
startupTimeLimit	Write	String	Indicates the period of time (in seconds) a worker process is given to start up and initialize. The value must be a string representation of a TimeSpan value. The valid range (in seconds) is 1 to 4294967.
orphanActionExe	Write	String	Indicates an executable to run when a worker process is orphaned.
orphanActionParams	Write	String	Indicates parameters for the executable that is specified in the orphanActionExe property.
orphanWorkerProcess	Write	Boolean	Indicates whether to assign a worker process to an orphan state instead of terminating it when the application pool fails. If true, an unresponsive worker process will be orphaned instead of terminated.
loadBalancerCapabilities	Write	String	Indicates the response behavior of a service when it is unavailable. The values that are allowed for this property are: HttpLevel, TcpLevel. If set to HttpLevel and the application pool is stopped, HTTP.sys will return HTTP 503 error. If set to TcpLevel, HTTP.sys will reset the connection.	HttpLevel, TcpLevel
rapidFailProtection	Write	Boolean	Indicates whether rapid-fail protection is enabled. If true, the application pool is shut down if there are a specified number of worker process crashes within a specified time period.
rapidFailProtectionInterval	Write	String	Indicates the time interval (in minutes) during which the specified number of worker process crashes must occur before the application pool is shut down by rapid-fail protection. The value must be a string representation of a TimeSpan value. The valid range (in minutes) is 1 to 144000.
rapidFailProtectionMaxCrashes	Write	UInt32	Indicates the maximum number of worker process crashes permitted before the application pool is shut down by rapid-fail protection. The value must be a valid integer between 0 and 2147483647.
autoShutdownExe	Write	String	Indicates an executable to run when the application pool is shut down by rapid-fail protection.
autoShutdownParams	Write	String	Indicates parameters for the executable that is specified in the autoShutdownExe property.
disallowOverlappingRotation	Write	Boolean	Indicates whether the W3SVC service should start another worker process to replace the existing worker process while that process is shutting down. If true, the application pool recycle will happen such that the existing worker process exits before another worker process is created.
disallowRotationOnConfigChange	Write	Boolean	Indicates whether the W3SVC service should rotate worker processes in the application pool when the configuration has changed. If true, the application pool will not recycle when its configuration is changed.
logEventOnRecycle	Write	String	Indicates that IIS should generate an event log entry for each occurrence of the specified recycling events.
restartMemoryLimit	Write	UInt32	Indicates the maximum amount of virtual memory (in KB) a worker process can consume before causing the application pool to recycle. The value must be a valid integer between 0 and 4294967295. A value of 0 means there is no limit.
restartPrivateMemoryLimit	Write	UInt32	Indicates the maximum amount of private memory (in KB) a worker process can consume before causing the application pool to recycle. The value must be a valid integer between 0 and 4294967295. A value of 0 means there is no limit.
restartRequestsLimit	Write	UInt32	Indicates the maximum number of requests the application pool can process before it is recycled. The value must be a valid integer between 0 and 4294967295. A value of 0 means the application pool can process an unlimited number of requests.
restartTimeLimit	Write	String	Indicates the period of time (in minutes) after which the application pool will recycle. The value must be a string representation of a TimeSpan value. The valid range (in minutes) is 0 to 432000. A value of 0 means the application pool does not recycle on a regular interval.
restartSchedule	Write	StringArray[]	Indicates a set of specific local times, in 24 hour format, when the application pool is recycled. The value must be an array of string representations of TimeSpan values. TimeSpan values must be between 00:00:00 and 23:59:59 seconds inclusive, with a granularity of 60 seconds. Setting the value of this property to '' disables the schedule.

Description

The WebAppPool DSC resource is used to...

Requirements

• Target machine must be running Windows Server 2012 R2 or later.

Known issues

All issues are not listed here, see here for all open issues.

Examples

Example 1

Create and configure an application pool. This example shows how to use the WebAppPool DSC resource to create and configure an application pool.

Configuration Sample_WebAppPool
{
    param
    (
        [String[]]$NodeName = 'localhost'
    )

    Import-DscResource -ModuleName WebAdministrationDsc

    Node $NodeName
    {
        WebAppPool SampleAppPool
        {
            Name                           = 'SampleAppPool'
            Ensure                         = 'Present'
            State                          = 'Started'
            autoStart                      = $true
            CLRConfigFile                  = ''
            enable32BitAppOnWin64          = $false
            enableConfigurationOverride    = $true
            managedPipelineMode            = 'Integrated'
            managedRuntimeLoader           = 'webengine4.dll'
            managedRuntimeVersion          = 'v4.0'
            passAnonymousToken             = $true
            startMode                      = 'OnDemand'
            queueLength                    = 1000
            cpuAction                      = 'NoAction'
            cpuLimit                       = 90000
            cpuResetInterval               = (New-TimeSpan -Minutes 5).ToString()
            cpuSmpAffinitized              = $false
            cpuSmpProcessorAffinityMask    = 4294967295
            cpuSmpProcessorAffinityMask2   = 4294967295
            identityType                   = 'ApplicationPoolIdentity'
            idleTimeout                    = (New-TimeSpan -Minutes 20).ToString()
            idleTimeoutAction              = 'Terminate'
            loadUserProfile                = $true
            logEventOnProcessModel         = 'IdleTimeout'
            logonType                      = 'LogonBatch'
            manualGroupMembership          = $false
            maxProcesses                   = 1
            pingingEnabled                 = $true
            pingInterval                   = (New-TimeSpan -Seconds 30).ToString()
            pingResponseTime               = (New-TimeSpan -Seconds 90).ToString()
            setProfileEnvironment          = $false
            shutdownTimeLimit              = (New-TimeSpan -Seconds 90).ToString()
            startupTimeLimit               = (New-TimeSpan -Seconds 90).ToString()
            orphanActionExe                = ''
            orphanActionParams             = ''
            orphanWorkerProcess            = $false
            loadBalancerCapabilities       = 'HttpLevel'
            rapidFailProtection            = $true
            rapidFailProtectionInterval    = (New-TimeSpan -Minutes 5).ToString()
            rapidFailProtectionMaxCrashes  = 5
            autoShutdownExe                = ''
            autoShutdownParams             = ''
            disallowOverlappingRotation    = $false
            disallowRotationOnConfigChange = $false
            logEventOnRecycle              = 'Time,Requests,Schedule,Memory,IsapiUnhealthy,OnDemand,ConfigChange,PrivateMemory'
            restartMemoryLimit             = 0
            restartPrivateMemoryLimit      = 0
            restartRequestsLimit           = 0
            restartTimeLimit               = (New-TimeSpan -Minutes 1440).ToString()
            restartSchedule                = @('00:00:00', '08:00:00', '16:00:00')
        }
    }
}