DSCResources/DSC_SqlAG/DSC_SqlAG.psm1
|
$script:sqlServerDscHelperModulePath = Join-Path -Path $PSScriptRoot -ChildPath '..\..\Modules\SqlServerDsc.Common' $script:resourceHelperModulePath = Join-Path -Path $PSScriptRoot -ChildPath '..\..\Modules\DscResource.Common' Import-Module -Name $script:sqlServerDscHelperModulePath Import-Module -Name $script:resourceHelperModulePath $script:localizedData = Get-LocalizedData -DefaultUICulture 'en-US' <# .SYNOPSIS Gets the specified Availability Group. .PARAMETER Name The name of the availability group. .PARAMETER ServerName Hostname of the SQL Server to be configured. .PARAMETER InstanceName Name of the SQL instance to be configured. #> function Get-TargetResource { [CmdletBinding()] [OutputType([System.Collections.Hashtable])] param ( [Parameter(Mandatory = $true)] [System.String] $Name, [Parameter(Mandatory = $true)] [System.String] $ServerName, [Parameter(Mandatory = $true)] [System.String] $InstanceName ) Write-Verbose -Message ( $script:localizedData.GetAvailabilityGroup -f $Name, $InstanceName ) # Connect to the instance $serverObject = Connect-SQL -ServerName $ServerName -InstanceName $InstanceName # Define current version for check compatibility $sqlMajorVersion = $serverObject.Version.Major # Get the endpoint properties $endpoint = $serverObject.Endpoints | Where-Object -FilterScript { $_.EndpointType -eq 'DatabaseMirroring' } if ( $endpoint ) { $endpointPort = $endpoint.Protocol.Tcp.ListenerPort } # Get the Availability Group $availabilityGroup = $serverObject.AvailabilityGroups[$Name] # Is this node actively hosting the SQL instance? $isActiveNode = Test-ActiveNode -ServerObject $serverObject # Create the return object. Default ensure to Absent. $alwaysOnAvailabilityGroupResource = @{ Name = $Name ServerName = $ServerName InstanceName = $InstanceName Ensure = 'Absent' IsActiveNode = $isActiveNode } if ( $availabilityGroup ) { # Get all of the properties that can be set using this resource $alwaysOnAvailabilityGroupResource.Ensure = 'Present' $alwaysOnAvailabilityGroupResource.AutomatedBackupPreference = $availabilityGroup.AutomatedBackupPreference $alwaysOnAvailabilityGroupResource.AvailabilityMode = $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].AvailabilityMode $alwaysOnAvailabilityGroupResource.BackupPriority = $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].BackupPriority $alwaysOnAvailabilityGroupResource.ConnectionModeInPrimaryRole = $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].ConnectionModeInPrimaryRole $alwaysOnAvailabilityGroupResource.ConnectionModeInSecondaryRole = $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].ConnectionModeInSecondaryRole $alwaysOnAvailabilityGroupResource.FailureConditionLevel = $availabilityGroup.FailureConditionLevel $alwaysOnAvailabilityGroupResource.FailoverMode = $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].FailoverMode $alwaysOnAvailabilityGroupResource.HealthCheckTimeout = $availabilityGroup.HealthCheckTimeout $alwaysOnAvailabilityGroupResource.EndpointURL = $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].EndpointUrl $alwaysOnAvailabilityGroupResource.EndpointPort = $endpointPort $alwaysOnAvailabilityGroupResource.EndpointHostName = $serverObject.NetName $alwaysOnAvailabilityGroupResource.Version = $sqlMajorVersion # Add properties that are only present in SQL 2016 or newer if ( $sqlMajorVersion -ge 13 ) { $alwaysOnAvailabilityGroupResource.Add('BasicAvailabilityGroup', $availabilityGroup.BasicAvailabilityGroup) $alwaysOnAvailabilityGroupResource.Add('DatabaseHealthTrigger', $availabilityGroup.DatabaseHealthTrigger) $alwaysOnAvailabilityGroupResource.Add('DtcSupportEnabled', $availabilityGroup.DtcSupportEnabled) } } return $alwaysOnAvailabilityGroupResource } <# .SYNOPSIS Creates or removes the availability group to in accordance with the desired state. .PARAMETER Name The name of the availability group. .PARAMETER ServerName Hostname of the SQL Server to be configured. .PARAMETER InstanceName Name of the SQL instance to be configured. .PARAMETER Ensure Specifies if the availability group should be present or absent. Default is Present. .PARAMETER AutomatedBackupPreference Specifies the automated backup preference for the availability group. When creating a group the default is 'None'. .PARAMETER AvailabilityMode Specifies the replica availability mode. When creating a group the default is 'AsynchronousCommit'. .PARAMETER BackupPriority Specifies the desired priority of the replicas in performing backups. The acceptable values for this parameter are integers from 0 through 100. Of the set of replicas which are online and available, the replica that has the highest priority performs the backup. When creating a group the efault is 50. .PARAMETER BasicAvailabilityGroup Specifies the type of availability group is Basic. This is only available is SQL Server 2016 and later and is ignored when applied to previous versions. .PARAMETER DatabaseHealthTrigger Specifies if the option Database Level Health Detection is enabled. This is only available is SQL Server 2016 and later and is ignored when applied to previous versions. .PARAMETER DtcSupportEnabled Specifies if the option Database DTC Support is enabled. This is only available is SQL Server 2016 and later and is ignored when applied to previous versions. This can't be altered once the Availability Group is created and is ignored if it is the case. .PARAMETER ConnectionModeInPrimaryRole Specifies how the availability replica handles connections when in the primary role. .PARAMETER ConnectionModeInSecondaryRole Specifies how the availability replica handles connections when in the secondary role. .PARAMETER EndpointHostName Specifies the hostname or IP address of the availability group replica endpoint. When creating a group the default is the instance network name. .PARAMETER FailureConditionLevel Specifies the automatic failover behavior of the availability group. .PARAMETER FailoverMode Specifies the failover mode. When creating a group the default is 'Manual'. .PARAMETER HealthCheckTimeout Specifies the length of time, in milliseconds, after which AlwaysOn availability groups declare an unresponsive server to be unhealthy. When creating a group the default is 30,000. .PARAMETER ProcessOnlyOnActiveNode Specifies that the resource will only determine if a change is needed if the target node is the active host of the SQL Server Instance. Not used in Set-TargetResource. #> function Set-TargetResource { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [System.String] $Name, [Parameter(Mandatory = $true)] [System.String] $ServerName, [Parameter(Mandatory = $true)] [System.String] $InstanceName, [Parameter()] [ValidateSet('Present', 'Absent')] [System.String] $Ensure = 'Present', [Parameter()] [ValidateSet('Primary', 'SecondaryOnly', 'Secondary', 'None')] [System.String] $AutomatedBackupPreference = 'None', [Parameter()] [ValidateSet('AsynchronousCommit', 'SynchronousCommit')] [System.String] $AvailabilityMode = 'AsynchronousCommit', [Parameter()] [ValidateRange(0, 100)] [System.UInt32] $BackupPriority = 50, [Parameter()] [System.Boolean] $BasicAvailabilityGroup, [Parameter()] [System.Boolean] $DatabaseHealthTrigger, [Parameter()] [System.Boolean] $DtcSupportEnabled, [Parameter()] [ValidateSet('AllowAllConnections', 'AllowReadWriteConnections')] [System.String] $ConnectionModeInPrimaryRole, [Parameter()] [ValidateSet('AllowNoConnections', 'AllowReadIntentConnectionsOnly', 'AllowAllConnections')] [System.String] $ConnectionModeInSecondaryRole, [Parameter()] [System.String] $EndpointHostName, [Parameter()] [ValidateSet( 'OnServerDown', 'OnServerUnresponsive', 'OnCriticalServerErrors', 'OnModerateServerErrors', 'OnAnyQualifiedFailureCondition' )] [System.String] $FailureConditionLevel, [Parameter()] [ValidateSet('Automatic', 'Manual')] [System.String] $FailoverMode = 'Manual', [Parameter()] [System.UInt32] $HealthCheckTimeout = 30000, [Parameter()] [System.Boolean] $ProcessOnlyOnActiveNode ) # Connect to the instance $serverObject = Connect-SQL -ServerName $ServerName -InstanceName $InstanceName # Determine if HADR is enabled on the instance. If not, throw an error if ( -not $serverObject.IsHadrEnabled ) { $errorMessage = $script:localizedData.HadrNotEnabled New-InvalidOperationException -Message $errorMessage } # Define current version for check compatibility $sqlMajorVersion = $serverObject.Version.Major # Get the Availability Group if it exists $availabilityGroup = $serverObject.AvailabilityGroups[$Name] switch ($Ensure) { 'Absent' { # If the AG exists if ( $availabilityGroup ) { # If the primary replica is currently on this instance if ( $availabilityGroup.PrimaryReplicaServerName -eq $serverObject.DomainInstanceName ) { try { Write-Verbose -Message ( $script:localizedData.RemoveAvailabilityGroup -f $Name, $InstanceName ) Remove-SqlAvailabilityGroup -InputObject $availabilityGroup -ErrorAction Stop } catch { $errorMessage = $script:localizedData.FailedRemoveAvailabilityGroup -f $availabilityGroup.Name, $InstanceName New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } } else { $errorMessage = $script:localizedData.NotPrimaryReplica -f $serverObject.DomainInstanceName, $availabilityGroup.Name, $availabilityGroup.PrimaryReplicaServerName New-InvalidOperationException -Message $errorMessage } } } 'Present' { # Ensure the appropriate cluster permissions are present Test-ClusterPermissions -ServerObject $serverObject # Make sure a database mirroring endpoint exists. $endpoint = $serverObject.Endpoints | Where-Object -FilterScript { $_.EndpointType -eq 'DatabaseMirroring' } if ( -not $endpoint ) { $errorMessage = $script:localizedData.DatabaseMirroringEndpointNotFound -f ('{0}\{1}' -f $ServerName, $InstanceName) New-ObjectNotFoundException -Message $errorMessage } # If the availability group does not exist, create it if ( -not $availabilityGroup ) { if ( -not $EndpointHostName ) { $EndpointHostName = $serverObject.NetName } # Set up the parameters to create the AG Replica $newReplicaParams = @{ Name = $serverObject.DomainInstanceName Version = $sqlMajorVersion AsTemplate = $true AvailabilityMode = $AvailabilityMode EndpointUrl = "TCP://$($EndpointHostName):$($endpoint.Protocol.Tcp.ListenerPort)" FailoverMode = $FailoverMode } if ( $BackupPriority ) { $newReplicaParams.Add('BackupPriority', $BackupPriority) } if ( $ConnectionModeInPrimaryRole ) { $newReplicaParams.Add('ConnectionModeInPrimaryRole', $ConnectionModeInPrimaryRole) } if ( $ConnectionModeInSecondaryRole ) { $newReplicaParams.Add('ConnectionModeInSecondaryRole', $ConnectionModeInSecondaryRole) } # Create the new replica object try { Write-Verbose -Message ( $script:localizedData.CreateAvailabilityGroupReplica -f $newReplicaParams.Name, $Name, $InstanceName ) $primaryReplica = New-SqlAvailabilityReplica @newReplicaParams -ErrorAction Stop } catch { $errorMessage = $script:localizedData.FailedCreateAvailabilityGroupReplica -f $newReplicaParams.Name, $InstanceName New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } # Set up the parameters for the new availability group $newAvailabilityGroupParams = @{ InputObject = $serverObject Name = $Name AvailabilityReplica = $primaryReplica } if ( $AutomatedBackupPreference ) { $newAvailabilityGroupParams.Add('AutomatedBackupPreference', $AutomatedBackupPreference) } if ( $sqlMajorVersion -ge 13 ) { $newAvailabilityGroupParams.Add('BasicAvailabilityGroup', $BasicAvailabilityGroup) $newAvailabilityGroupParams.Add('DatabaseHealthTrigger', $DatabaseHealthTrigger) $newAvailabilityGroupParams.Add('DtcSupportEnabled', $DtcSupportEnabled) } if ( $FailureConditionLevel ) { $newAvailabilityGroupParams.Add('FailureConditionLevel', $FailureConditionLevel) } if ( $HealthCheckTimeout ) { $newAvailabilityGroupParams.Add('HealthCheckTimeout', $HealthCheckTimeout) } # Create the Availability Group try { Write-Verbose -Message ( $script:localizedData.CreateAvailabilityGroup -f $Name, $InstanceName ) New-SqlAvailabilityGroup @newAvailabilityGroupParams -ErrorAction Stop } catch { $errorMessage = $script:localizedData.FailedCreateAvailabilityGroup -f $Name, $InstanceName New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } } # Otherwise let's check each of the parameters passed and update the Availability Group accordingly else { Write-Verbose -Message ( $script:localizedData.UpdateAvailabilityGroup -f $Name, $InstanceName ) # Get the parameters that were submitted to the function [System.Array] $submittedParameters = $PSBoundParameters.Keys # Make sure we're communicating with the primary replica $primaryServerObject = Get-PrimaryReplicaServerObject -ServerObject $serverObject -AvailabilityGroup $availabilityGroup $availabilityGroup = $primaryServerObject.AvailabilityGroups[$Name] if ( ( $submittedParameters -contains 'AutomatedBackupPreference' ) -and ( $AutomatedBackupPreference -ne $availabilityGroup.AutomatedBackupPreference ) ) { $availabilityGroup.AutomatedBackupPreference = $AutomatedBackupPreference Update-AvailabilityGroup -AvailabilityGroup $availabilityGroup } if ( ( $submittedParameters -contains 'AvailabilityMode' ) -and ( $AvailabilityMode -ne $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].AvailabilityMode ) ) { $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].AvailabilityMode = $AvailabilityMode Update-AvailabilityGroupReplica -AvailabilityGroupReplica $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName] } if ( ( $submittedParameters -contains 'BackupPriority' ) -and ( $BackupPriority -ne $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].BackupPriority ) ) { $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].BackupPriority = $BackupPriority Update-AvailabilityGroupReplica -AvailabilityGroupReplica $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName] } if ( ( $submittedParameters -contains 'BasicAvailabilityGroup' ) -and ( $sqlMajorVersion -ge 13 ) -and ( $BasicAvailabilityGroup -ne $availabilityGroup.BasicAvailabilityGroup ) ) { $availabilityGroup.BasicAvailabilityGroup = $BasicAvailabilityGroup Update-AvailabilityGroup -AvailabilityGroup $availabilityGroup } if ( ( $submittedParameters -contains 'DatabaseHealthTrigger' ) -and ( $sqlMajorVersion -ge 13 ) -and ( $DatabaseHealthTrigger -ne $availabilityGroup.DatabaseHealthTrigger ) ) { $availabilityGroup.DatabaseHealthTrigger = $DatabaseHealthTrigger Update-AvailabilityGroup -AvailabilityGroup $availabilityGroup } # Make sure ConnectionModeInPrimaryRole has a value in order to avoid false positive matches when the parameter is not defined if ( ( $submittedParameters -contains 'ConnectionModeInPrimaryRole' ) -and ( -not [System.String]::IsNullOrEmpty($ConnectionModeInPrimaryRole) ) -and ( $ConnectionModeInPrimaryRole -ne $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].ConnectionModeInPrimaryRole ) ) { $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].ConnectionModeInPrimaryRole = $ConnectionModeInPrimaryRole Update-AvailabilityGroupReplica -AvailabilityGroupReplica $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName] } # Make sure ConnectionModeInSecondaryRole has a value in order to avoid false positive matches when the parameter is not defined if ( ( $submittedParameters -contains 'ConnectionModeInSecondaryRole' ) -and ( -not [System.String]::IsNullOrEmpty($ConnectionModeInSecondaryRole) ) -and ( $ConnectionModeInSecondaryRole -ne $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].ConnectionModeInSecondaryRole ) ) { $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].ConnectionModeInSecondaryRole = $ConnectionModeInSecondaryRole Update-AvailabilityGroupReplica -AvailabilityGroupReplica $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName] } # Break out the EndpointUrl properties $currentEndpointProtocol, $currentEndpointHostName, $currentEndpointPort = $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].EndpointUrl.Replace('//', '').Split(':') if ( $endpoint.Protocol.Tcp.ListenerPort -ne $currentEndpointPort ) { $newEndpointUrl = $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].EndpointUrl.Replace($currentEndpointPort, $endpoint.Protocol.Tcp.ListenerPort) $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].EndpointUrl = $newEndpointUrl Update-AvailabilityGroupReplica -AvailabilityGroupReplica $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName] } if ( ( $submittedParameters -contains 'EndpointHostName' ) -and ( $EndpointHostName -ne $currentEndpointHostName ) ) { $newEndpointUrl = $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].EndpointUrl.Replace($currentEndpointHostName, $EndpointHostName) $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].EndpointUrl = $newEndpointUrl Update-AvailabilityGroupReplica -AvailabilityGroupReplica $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName] } if ( $currentEndpointProtocol -ne 'TCP' ) { $newEndpointUrl = $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].EndpointUrl.Replace($currentEndpointProtocol, 'TCP') $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].EndpointUrl = $newEndpointUrl Update-AvailabilityGroupReplica -AvailabilityGroupReplica $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName] } # Make sure FailureConditionLevel has a value in order to avoid false positive matches when the parameter is not defined if ( ( $submittedParameters -contains 'FailureConditionLevel' ) -and ( -not [System.String]::IsNullOrEmpty($FailureConditionLevel) ) -and ( $FailureConditionLevel -ne $availabilityGroup.FailureConditionLevel ) ) { $availabilityGroup.FailureConditionLevel = $FailureConditionLevel Update-AvailabilityGroup -AvailabilityGroup $availabilityGroup } if ( ( $submittedParameters -contains 'FailoverMode' ) -and ( $FailoverMode -ne $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].FailoverMode ) ) { $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName].FailoverMode = $FailoverMode Update-AvailabilityGroupReplica -AvailabilityGroupReplica $availabilityGroup.AvailabilityReplicas[$serverObject.DomainInstanceName] } if ( ( $submittedParameters -contains 'HealthCheckTimeout' ) -and ( $HealthCheckTimeout -ne $availabilityGroup.HealthCheckTimeout ) ) { $availabilityGroup.HealthCheckTimeout = $HealthCheckTimeout Update-AvailabilityGroup -AvailabilityGroup $availabilityGroup } } } } } <# .SYNOPSIS Determines if the availability group is in the desired state. .PARAMETER Name The name of the availability group. .PARAMETER ServerName Hostname of the SQL Server to be configured. .PARAMETER InstanceName Name of the SQL instance to be configured. .PARAMETER Ensure Specifies if the availability group should be present or absent. Default is Present. .PARAMETER AutomatedBackupPreference Specifies the automated backup preference for the availability group. When creating a group the default is 'None'. .PARAMETER AvailabilityMode Specifies the replica availability mode. When creating a group the default is 'AsynchronousCommit'. .PARAMETER BackupPriority Specifies the desired priority of the replicas in performing backups. The acceptable values for this parameter are integers from 0 through 100. Of the set of replicas which are online and available, the replica that has the highest priority performs the backup. When creating a group the default is 50. .PARAMETER BasicAvailabilityGroup Specifies the type of availability group is Basic. This is only available is SQL Server 2016 and later and is ignored when applied to previous versions. .PARAMETER DatabaseHealthTrigger Specifies if the option Database Level Health Detection is enabled. This is only available is SQL Server 2016 and later and is ignored when applied to previous versions. .PARAMETER DtcSupportEnabled Specifies if the option Database DTC Support is enabled. This is only available is SQL Server 2016 and later and is ignored when applied to previous versions. .PARAMETER ConnectionModeInPrimaryRole Specifies how the availability replica handles connections when in the primary role. .PARAMETER ConnectionModeInSecondaryRole Specifies how the availability replica handles connections when in the secondary role. .PARAMETER EndpointHostName Specifies the hostname or IP address of the availability group replica endpoint. When creating a group the default is the instance network name. .PARAMETER FailureConditionLevel Specifies the automatic failover behavior of the availability group. .PARAMETER FailoverMode Specifies the failover mode. When creating a group the default is 'Manual'. .PARAMETER HealthCheckTimeout Specifies the length of time, in milliseconds, after which AlwaysOn availability groups declare an unresponsive server to be unhealthy. When creating a group the default is 30,000. .PARAMETER ProcessOnlyOnActiveNode Specifies that the resource will only determine if a change is needed if the target node is the active host of the SQL Server Instance. #> function Test-TargetResource { [CmdletBinding()] [OutputType([System.Boolean])] param ( [Parameter(Mandatory = $true)] [System.String] $Name, [Parameter(Mandatory = $true)] [System.String] $ServerName, [Parameter(Mandatory = $true)] [System.String] $InstanceName, [Parameter()] [ValidateSet('Present', 'Absent')] [System.String] $Ensure = 'Present', [Parameter()] [ValidateSet('Primary', 'SecondaryOnly', 'Secondary', 'None')] [System.String] $AutomatedBackupPreference = 'None', [Parameter()] [ValidateSet('AsynchronousCommit', 'SynchronousCommit')] [System.String] $AvailabilityMode = 'AsynchronousCommit', [Parameter()] [ValidateRange(0, 100)] [System.UInt32] $BackupPriority = 50, [Parameter()] [System.Boolean] $BasicAvailabilityGroup, [Parameter()] [System.Boolean] $DatabaseHealthTrigger, [Parameter()] [System.Boolean] $DtcSupportEnabled, [Parameter()] [ValidateSet('AllowAllConnections', 'AllowReadWriteConnections')] [System.String] $ConnectionModeInPrimaryRole, [Parameter()] [ValidateSet('AllowNoConnections', 'AllowReadIntentConnectionsOnly', 'AllowAllConnections')] [System.String] $ConnectionModeInSecondaryRole, [Parameter()] [System.String] $EndpointHostName, [Parameter()] [ValidateSet('OnServerDown', 'OnServerUnresponsive', 'OnCriticalServerErrors', 'OnModerateServerErrors', 'OnAnyQualifiedFailureCondition')] [System.String] $FailureConditionLevel, [Parameter()] [ValidateSet('Automatic', 'Manual')] [System.String] $FailoverMode = 'Manual', [Parameter()] [System.UInt32] $HealthCheckTimeout = 30000, [Parameter()] [System.Boolean] $ProcessOnlyOnActiveNode ) $getTargetResourceParameters = @{ InstanceName = $InstanceName ServerName = $ServerName Name = $Name } # Assume this will pass. We will determine otherwise later $result = $true $getTargetResourceResult = Get-TargetResource @getTargetResourceParameters <# If this is supposed to process only the active node, and this is not the active node, don't bother evaluating the test. #> if ( $ProcessOnlyOnActiveNode -and -not $getTargetResourceResult.IsActiveNode ) { Write-Verbose -Message ( $script:localizedData.NotActiveNode -f $env:COMPUTERNAME, $InstanceName ) return $result } Write-Verbose -Message ( $script:localizedData.TestingConfiguration -f $Name, $InstanceName ) # Define current version for check compatibility $sqlMajorVersion = $getTargetResourceResult.Version switch ($Ensure) { 'Absent' { if ( $getTargetResourceResult.Ensure -eq 'Absent' ) { $result = $true } else { $result = $false } } 'Present' { $parametersToCheck = @( 'Name', 'ServerName', 'InstanceName', 'Ensure', 'AutomatedBackupPreference', 'AvailabilityMode', 'BackupPriority', 'ConnectionModeInPrimaryRole', 'ConnectionModeInSecondaryRole', 'FailureConditionLevel', 'FailoverMode', 'HealthCheckTimeout' ) <# Add properties compatible with SQL Server 2016 or later versions DtcSupportEnabled is enabled at the creation of the Availability Group only, hence it will not be checked in this block #> if ( $sqlMajorVersion -ge 13 ) { $parametersToCheck += 'BasicAvailabilityGroup' $parametersToCheck += 'DatabaseHealthTrigger' } if ( $getTargetResourceResult.Ensure -eq 'Present' ) { # Use $PSBoundParameters rather than $MyInvocation.MyCommand.Parameters.GetEnumerator() # This allows us to only validate the supplied parameters # If the parameter is not defined by the configuration, we don't care what # it gets set to. foreach ( $parameter in $PSBoundParameters.GetEnumerator() ) { $parameterName = $parameter.Key $parameterValue = Get-Variable -Name $parameterName -ErrorAction SilentlyContinue | Select-Object -ExpandProperty Value # Make sure we don't try to validate a common parameter if ( $parametersToCheck -notcontains $parameterName ) { continue } if ( $getTargetResourceResult.($parameterName) -ne $parameterValue ) { Write-Verbose -Message ( $script:localizedData.ParameterNotInDesiredState -f $parameterName, $parameterValue, $getTargetResourceResult.$parameterName ) $result = $false } } # Get the Endpoint URL properties $currentEndpointProtocol, $currentEndpointHostName, $currentEndpointPort = $getTargetResourceResult.EndpointUrl.Replace('//', '').Split(':') if ( -not $EndpointHostName ) { $EndpointHostName = $getTargetResourceResult.EndpointHostName } # Verify the hostname in the endpoint URL is correct if ( $EndpointHostName -ne $currentEndpointHostName ) { Write-Verbose -Message ( $script:localizedData.ParameterNotInDesiredState -f 'EndpointHostName', $EndpointHostName, $currentEndpointHostName ) $result = $false } # Verify the protocol in the endpoint URL is correct if ( 'TCP' -ne $currentEndpointProtocol ) { Write-Verbose -Message ( $script:localizedData.ParameterNotInDesiredState -f 'EndpointProtocol', 'TCP', $currentEndpointProtocol ) $result = $false } # Verify the port in the endpoint URL is correct if ( $getTargetResourceResult.EndpointPort -ne $currentEndpointPort ) { Write-Verbose -Message ( $script:localizedData.ParameterNotInDesiredState -f 'EndpointPort', $getTargetResourceResult.EndpointPort, $currentEndpointPort ) $result = $false } } else { $result = $false } } } return $result } <# .SYNOPSIS Executes the alter method on an Availability Group object. .PARAMETER AvailabilityGroup The Availability Group object that must be altered. #> function Update-AvailabilityGroup { param ( [Parameter(Mandatory = $true)] [Microsoft.SqlServer.Management.Smo.AvailabilityGroup] $AvailabilityGroup ) try { $originalErrorActionPreference = $ErrorActionPreference $ErrorActionPreference = 'Stop' $AvailabilityGroup.Alter() } catch { $errorMessage = $script:localizedData.FailedAlterAvailabilityGroup -f $AvailabilityGroup.Name New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } finally { $ErrorActionPreference = $originalErrorActionPreference } } Export-ModuleMember -Function *-TargetResource |