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dscbot edited this page Jan 3, 2023 · 2 revisions

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')
        }
    }
}

WebAdministrationDsc Module

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