functions/Remove-DbaNetworkCertificate.ps1
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function Remove-DbaNetworkCertificate { <# .SYNOPSIS Removes the network certificate for SQL Server instance .DESCRIPTION Removes the network certificate for SQL Server instance. This setting is found in Configuration Manager. .PARAMETER SqlInstance The target SQL Server instance or instances. Defaults to localhost. If target is a cluster, you must also specify InstanceClusterName (see below) .PARAMETER Credential Allows you to login to the computer (not sql instance) using alternative credentials. .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. .PARAMETER WhatIf Shows what would happen if the command were to run. No actions are actually performed. .PARAMETER Confirm Prompts you for confirmation before executing any changing operations within the command. .NOTES Tags: Certificate Author: Chrissy LeMaire (@cl), netnerds.net Website: https://dbatools.io Copyright: (c) 2018 by dbatools, licensed under MIT License: MIT https://opensource.org/licenses/MIT .LINK https://dbatools.io/Remove-DbaNetworkCertificate .EXAMPLE PS C:\> Remove-DbaNetworkCertificate Removes the Network Certificate for the default instance (MSSQLSERVER) on localhost .EXAMPLE PS C:\> Remove-DbaNetworkCertificate -SqlInstance sql1\SQL2008R2SP2 Removes the Network Certificate for the SQL2008R2SP2 instance on sql1 .EXAMPLE PS C:\> Remove-DbaNetworkCertificate -SqlInstance localhost\SQL2008R2SP2 -WhatIf Shows what would happen if the command were run #> [CmdletBinding(SupportsShouldProcess, ConfirmImpact = "Low", DefaultParameterSetName = 'Default')] param ( [Parameter(ValueFromPipeline)] [DbaInstanceParameter[]]$SqlInstance = $env:COMPUTERNAME, [PSCredential]$Credential, [switch]$EnableException ) process { # Registry access foreach ($instance in $sqlinstance) { $stepCounter = 0 Write-Message -Level VeryVerbose -Message "Processing $instance" -Target $instance $null = Test-ElevationRequirement -ComputerName $instance -Continue try { Write-Message -Level Verbose -Message "Resolving hostname." $resolved = $null $resolved = Resolve-DbaNetworkName -ComputerName $instance -Credential $Credential -EnableException } catch { $resolved = Resolve-DbaNetworkName -ComputerName $instance -Credential $Credential -Turbo } if ($null -eq $resolved) { Stop-Function -Message "Can't resolve $instance" -Target $instance -Continue -Category InvalidArgument } try { $sqlwmi = Invoke-ManagedComputerCommand -ComputerName $resolved.FQDN -ScriptBlock { $wmi.Services } -Credential $Credential -ErrorAction Stop | Where-Object DisplayName -eq "SQL Server ($($instance.InstanceName))" } catch { Stop-Function -Message "Failed to access $instance" -Target $instance -Continue -ErrorRecord $_ } $regroot = ($sqlwmi.AdvancedProperties | Where-Object Name -eq REGROOT).Value $vsname = ($sqlwmi.AdvancedProperties | Where-Object Name -eq VSNAME).Value $instancename = $sqlwmi.DisplayName.Replace('SQL Server (', '').Replace(')', '') # Don't clown, I don't know regex :( $serviceaccount = $sqlwmi.ServiceAccount if ([System.String]::IsNullOrEmpty($regroot)) { $regroot = $sqlwmi.AdvancedProperties | Where-Object { $_ -match 'REGROOT' } $vsname = $sqlwmi.AdvancedProperties | Where-Object { $_ -match 'VSNAME' } if (![System.String]::IsNullOrEmpty($regroot)) { $regroot = ($regroot -Split 'Value\=')[1] $vsname = ($vsname -Split 'Value\=')[1] } else { Stop-Function -Message "Can't find instance $vsname on $instance" -Continue -Category ObjectNotFound -Target $instance } } if ([System.String]::IsNullOrEmpty($vsname)) { $vsname = $instance } Write-ProgressHelper -StepNumber ($stepCounter++) -Message "Regroot: $regroot" -Target $instance Write-ProgressHelper -StepNumber ($stepCounter++) -Message "ServiceAcct: $serviceaccount" -Target $instance Write-ProgressHelper -StepNumber ($stepCounter++) -Message "InstanceName: $instancename" -Target $instance Write-ProgressHelper -StepNumber ($stepCounter++) -Message "VSNAME: $vsname" -Target $instance $scriptblock = { $regroot = $args[0] $serviceaccount = $args[1] $instancename = $args[2] $vsname = $args[3] $regpath = "Registry::HKEY_LOCAL_MACHINE\$($regroot)\MSSQLServer\SuperSocketNetLib" $cert = (Get-ItemProperty -Path $regpath -Name Certificate).Certificate Set-ItemProperty -Path $regpath -Name Certificate -Value $null [pscustomobject]@{ ComputerName = $env:COMPUTERNAME InstanceName = $instancename SqlInstance = $vsname ServiceAccount = $serviceaccount RemovedThumbprint = $cert.Thumbprint } } if ($PScmdlet.ShouldProcess("local", "Connecting to $ComputerName to remove the cert")) { try { Invoke-Command2 -ComputerName $resolved.fqdn -Credential $Credential -ArgumentList $regroot, $serviceaccount, $instancename, $vsname -ScriptBlock $scriptblock -ErrorAction Stop } catch { Stop-Function -Message "Failed to connect to $($resolved.fqdn) using PowerShell remoting." -ErrorRecord $_ -Target $instance -Continue } } } } } |