functions/Copy-DbaSpConfigure.ps1

function Copy-DbaSpConfigure {
    <#
        .SYNOPSIS
            Copy-DbaSpConfigure migrates configuration values from one SQL Server to another.
 
        .DESCRIPTION
            By default, all configuration values are copied. The -ConfigName parameter is auto-populated for command-line completion and can be used to copy only specific configs.
 
        .PARAMETER Source
            Source SQL Server. You must have sysadmin access and server version must be SQL Server version 2000 or higher.
 
        .PARAMETER SourceSqlCredential
            Login to the target instance using alternative credentials. Windows and SQL Authentication supported. Accepts credential objects (Get-Credential)
 
        .PARAMETER Destination
            Destination SQL Server. You must have sysadmin access and the server must be SQL Server 2000 or higher.
 
        .PARAMETER DestinationSqlCredential
            Login to the target instance using alternative credentials. Windows and SQL Authentication supported. Accepts credential objects (Get-Credential)
 
        .PARAMETER ConfigName
            Specifies the configuration setting to process. Options for this list are auto-populated from the server. If unspecified, all ConfigNames will be processed.
 
        .PARAMETER ExcludeConfigName
            Specifies the configuration settings to exclude. Options for this list are auto-populated from the server.
 
        .PARAMETER WhatIf
            If this switch is enabled, no actions are performed but informational messages will be displayed that explain what would happen if the command were to run.
 
        .PARAMETER Confirm
            If this switch is enabled, you will be prompted for confirmation before executing any operations that change state.
 
        .PARAMETER EnableException
            By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.
            This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting.
            Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch.
 
        .NOTES
            Tags: Migration, Configure, SpConfigure
            Author: Chrissy LeMaire (@cl), netnerds.net
            Requires: sysadmin access on SQL Servers
 
            Website: https://dbatools.io
            Copyright: (C) Chrissy LeMaire, clemaire@gmail.com
            License: MIT https://opensource.org/licenses/MIT
 
        .LINK
            https://dbatools.io/Copy-DbaSpConfigure
 
        .EXAMPLE
            Copy-DbaSpConfigure -Source sqlserver2014a -Destination sqlcluster
 
            Copies all sp_configure settings from sqlserver2014a to sqlcluster
 
        .EXAMPLE
            Copy-DbaSpConfigure -Source sqlserver2014a -Destination sqlcluster -ConfigName DefaultBackupCompression, IsSqlClrEnabled -SourceSqlCredential $cred -Force
 
            Copies the values for IsSqlClrEnabled and DefaultBackupCompression from sqlserver2014a to sqlcluster using SQL credentials to authenticate to sqlserver2014a and Windows credentials to authenticate to sqlcluster.
 
        .EXAMPLE
            Copy-DbaSpConfigure -Source sqlserver2014a -Destination sqlcluster -ExcludeConfigName DefaultBackupCompression, IsSqlClrEnabled
 
            Copies all configs except for IsSqlClrEnabled and DefaultBackupCompression, from sqlserver2014a to sqlcluster.
 
        .EXAMPLE
            Copy-DbaSpConfigure -Source sqlserver2014a -Destination sqlcluster -WhatIf
 
            Shows what would happen if the command were executed.
    #>

    [CmdletBinding(DefaultParameterSetName = "Default", SupportsShouldProcess = $true)]
    param (
        [parameter(Mandatory = $true)]
        [DbaInstanceParameter]$Source,
        [PSCredential]
        $SourceSqlCredential,
        [parameter(Mandatory = $true)]
        [DbaInstanceParameter]$Destination,
        [PSCredential]
        $DestinationSqlCredential,
        [object[]]$ConfigName,
        [object[]]$ExcludeConfigName,
        [Alias('Silent')]
        [switch]$EnableException
    )

    begin {

        $sourceServer = Connect-SqlInstance -SqlInstance $Source -SqlCredential $SourceSqlCredential
        $destServer = Connect-SqlInstance -SqlInstance $Destination -SqlCredential $DestinationSqlCredential

        $source = $sourceServer.DomainInstanceName
        $destination = $destServer.DomainInstanceName
    }
    process {

        $sourceProps = Get-DbaSpConfigure -SqlInstance $sourceServer
        $destProps = Get-DbaSpConfigure -SqlInstance $destServer

        foreach ($sourceProp in $sourceProps) {
            $displayName = $sourceProp.DisplayName
            $sConfigName = $sourceProp.ConfigName
            $sConfiguredValue = $sourceProp.ConfiguredValue
            $requiresRestart = $sourceProp.IsDynamic

            $copySpConfigStatus = [pscustomobject]@{
                SourceServer      = $sourceServer.Name
                DestinationServer = $destServer.Name
                Name              = $sConfigName
                Type              = "Configuration Value"
                Status            = $null
                Notes             = $null
                DateTime          = [DbaDateTime](Get-Date)
            }

            if ($ConfigName -and $sConfigName -notin $ConfigName -or $sConfigName -in $ExcludeConfigName ) {
                continue
            }

            $destProp = $destProps | Where-Object ConfigName -eq $sConfigName
            if (!$destProp) {
                Write-Message -Level Verbose -Message "Configuration $sConfigName ('$displayName') does not exist on the destination instance."

                $copySpConfigStatus.Status = "Skipped"
                $copySpConfigStatus.Notes = "Configuration does not exist on destination"
                $copySpConfigStatus | Select-DefaultView -Property DateTime, SourceServer, DestinationServer, Name, Type, Status, Notes -TypeName MigrationObject

                continue
            }

            if ($Pscmdlet.ShouldProcess($destination, "Updating $sConfigName [$displayName]")) {
                try {
                    $destOldConfigValue = $destProp.ConfiguredValue
                    
                    if ($sConfiguredValue -ne $destOldConfigValue) {
                        $result = Set-DbaSpConfigure -SqlInstance $destServer -Name $sConfigName -Value $sConfiguredValue -EnableException -WarningAction SilentlyContinue
                        if ($result) {
                            Write-Message -Level Verbose -Message "Updated $($destProp.ConfigName) ($($destProp.DisplayName)) from $destOldConfigValue to $sConfiguredValue."
                        }
                    }
                    if ($requiresRestart -eq $false) {
                        Write-Message -Level Verbose -Message "Configuration option $sConfigName ($displayName) requires restart."
                        $copySpConfigStatus.Notes = "Requires restart"
                    }
                    $copySpConfigStatus.Status = "Successful"
                    $copySpConfigStatus | Select-DefaultView -Property DateTime, SourceServer, DestinationServer, Name, Type, Status, Notes -TypeName MigrationObject
                }
                catch {
                    if ($_.Exception -match 'the same as the') {
                        $copySpConfigStatus.Status = "Successful"
                    }
                    else {
                        $copySpConfigStatus.Status = "Failed"
                        $copySpConfigStatus.Notes = $_.Exception
                    }
                    $copySpConfigStatus | Select-DefaultView -Property DateTime, SourceServer, DestinationServer, Name, Type, Status, Notes -TypeName MigrationObject

                    Stop-Function -Message "Could not set $($destProp.ConfigName) to $sConfiguredValue." -Target $sConfigName -ErrorRecord $_
                }
            }
        }
    }
    end {
        Test-DbaDeprecation -DeprecatedOn "1.0.0" -EnableException:$false -Alias Copy-SqlSpConfigure
    }
}