functions/Test-DbaConnection.ps1
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#ValidationTags#Messaging,FlowControl,Pipeline,CodeStyle# function Test-DbaConnection { <# .SYNOPSIS Tests the connection to a single instance. .DESCRIPTION Tests the ability to connect to an SQL Server instance outputting information about the server and instance. .PARAMETER SqlInstance The SQL Server Instance to test connection .PARAMETER Credential Credential object used to connect to the Computer as a different user .PARAMETER SqlCredential Login to the target instance using alternative credentials. Windows and SQL Authentication supported. Accepts credential objects (Get-Credential) .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: CIM, Test, Connection 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/Test-DbaConnection .EXAMPLE PS C:\> Test-DbaConnection SQL2016 ``` ComputerName : SQL2016 InstanceName : MSSQLSERVER SqlInstance : sql2016 SqlVersion : 13.0.4001 ConnectingAsUser : BASE\ctrlb ConnectSuccess : True AuthType : Windows Authentication AuthScheme : KERBEROS TcpPort : 1433 IPAddress : 10.2.1.5 NetBiosName : sql2016.base.local IsPingable : True PSRemotingAccessible : True DomainName : base.local LocalWindows : 10.0.15063.0 LocalPowerShell : 5.1.15063.502 LocalCLR : 4.0.30319.42000 LocalSMOVersion : 13.0.0.0 LocalDomainUser : True LocalRunAsAdmin : False ``` Test connection to SQL2016 and outputs information collected #> [CmdletBinding()] param ( [parameter(ValueFromPipeline)] [Alias("ServerInstance", "SqlServer")] [DbaInstance[]]$SqlInstance, [PSCredential]$Credential, [PSCredential]$SqlCredential, [Alias('Silent')] [switch]$EnableException ) process { foreach ($instance in $SqlInstance) { # Get local environment Write-Message -Level Verbose -Message "Getting local environment information" $localInfo = [pscustomobject]@{ Windows = [environment]::OSVersion.Version.ToString() Edition = $PSVersionTable.PSEdition PowerShell = $PSVersionTable.PSversion.ToString() CLR = [string]$PSVersionTable.CLRVersion SMO = ((([AppDomain]::CurrentDomain.GetAssemblies() | Where-Object { $_.Fullname -like "Microsoft.SqlServer.SMO,*" }).FullName -Split ", ")[1]).TrimStart("Version=") DomainUser = $env:computername -ne $env:USERDOMAIN RunAsAdmin = ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator") } try { <# gather following properties #> <# InputName : ComputerName : IPAddress : DNSHostName : DNSDomain : Domain : DNSHostEntry : FQDN : FullComputerName : #> $resolved = Resolve-DbaNetworkName -ComputerName $instance.ComputerName -Credential $Credential } catch { Stop-Function -Message "Unable to resolve server information" -Category ConnectionError -Target $instance -ErrorRecord $_ -Continue } # Test for WinRM #Test-WinRM neh Write-Message -Level Verbose -Message "Checking remote acccess" try { $null = Invoke-Command2 -ComputerName $instance.ComputerName -Credential $Credential -ScriptBlock { Get-ChildItem } -ErrorAction Stop $remoting = $true } catch { $remoting = $_ } # Test Connection first using Ping class which requires ICMP access then failback to tcp if pings are blocked Write-Message -Level Verbose -Message "Testing ping to $($instance.ComputerName)" $ping = New-Object System.Net.NetworkInformation.Ping $timeout = 1000 #milliseconds $reply = $ping.Send($instance.ComputerName, $timeout) $pingable = $reply.Status -eq 'Success' # this whole section does nothing and returns errors for default instances with a non-default port - baseaddress not defined # commenting it all out # SQL Server connection # if ($instance.InstanceName -ne "MSSQLSERVER") { # #Variable marked as unused by PSScriptAnalyzer, need to be in PSCustomObject? # #$sqlport = "N/A" # } else { # Write-Message -Level Verbose -Message "Testing raw socket connection to default SQL port" # $tcp = New-Object System.Net.Sockets.TcpClient # try { # $tcp.Connect($baseaddress, 1433) # $tcp.Close() # $tcp.Dispose() # } catch { # # here to avoid an empty catch # $null = 1 # } # } try { $server = Connect-SqlInstance -SqlInstance $instance.FullSmoName -SqlCredential $SqlCredential $connectSuccess = $true $instanceName = $server.InstanceName } catch { $connectSuccess = $false $instanceName = $instance.InstanceName Stop-Function -Message "Issue connection to SQL Server on $instance" -Category ConnectionError -Target $instance -ErrorRecord $_ -Continue } $username = $server.ConnectionContext.TrueLogin if ($username -like "*\*") { $authType = "Windows Authentication" } else { $authType = "SQL Authentication" } # TCP Port try { $tcpport = (Get-DbaTcpPort -SqlInstance $server -EnableException).Port } catch { $tcpport = $_ } # Auth Scheme try { $authscheme = (Test-DbaConnectionAuthScheme -SqlInstance $server -WarningVariable authwarning -WarningAction SilentlyContinue).AuthScheme } catch { $authscheme = $_ } if ($authwarning) { $authscheme = "N/A" } [pscustomobject]@{ ComputerName = $resolved.ComputerName InstanceName = $instanceName SqlInstance = $instance.FullSmoName SqlVersion = $server.Version ConnectingAsUser = $username ConnectSuccess = $connectSuccess AuthType = $authType AuthScheme = $authscheme TcpPort = $tcpport IPAddress = $resolved.IPAddress NetBiosName = $resolved.FullComputerName IsPingable = $pingable PSRemotingAccessible = $remoting DomainName = $resolved.Domain LocalWindows = $localInfo.Windows LocalPowerShell = $localInfo.PowerShell LocalCLR = $localInfo.CLR LocalSMOVersion = $localInfo.SMO LocalDomainUser = $localInfo.DomainUser LocalRunAsAdmin = $localInfo.RunAsAdmin LocalEdition = $localInfo.Edition } } } end { Test-DbaDeprecation -DeprecatedOn "1.0.0" -EnableException:$false -Alias Test-SqlConnection } } |