functions/Watch-DbaDbLogin.ps1
function Watch-DbaDbLogin { <# .SYNOPSIS Tracks SQL Server logins: which host they came from, what database they're using, and what program is being used to log in. .DESCRIPTION Watch-DbaDbLogin uses SQL Server DMVs to track logins into a SQL Server table. This is helpful when you need to migrate a SQL Server and update connection strings, but have inadequate documentation on which servers/applications are logging into your SQL instance. Running this script every 5 minutes for a week should give you a sufficient idea about database and login usage. .PARAMETER SqlInstance The SQL Server that stores the Watch database. .PARAMETER SqlCms Specifies a Central Management Server to query for a list of servers to watch. .PARAMETER ServersFromFile Specifies a file containing a list of servers to watch. This file must contain one server name per line. .PARAMETER Database The name of the Watch database. .PARAMETER Table The name of the Watch table. By default, this is DbaTools-WatchDbLogins. .PARAMETER SqlCredential Allows you to login to servers using SQL Logins instead of Windows Authentication (AKA Integrated or Trusted). To use: $scred = Get-Credential, then pass $scred object to the -SqlCredential parameter. Windows Authentication will be used if SqlCredential is not specified. SQL Server does not accept Windows credentials being passed as credentials. To connect as a different Windows user, run PowerShell as that user. .PARAMETER Silent If this switch is enabled, the internal messaging functions will be silenced. .NOTES Tags: Login Author: Chrissy LeMaire (@cl), netnerds.net Requires: sysadmin access on all SQL Servers for the most accurate results Website: https://dbatools.io Copyright: (C) Chrissy LeMaire, clemaire@gmail.com License: GNU GPL v3 https://opensource.org/licenses/GPL-3.0 .LINK https://dbatools.io/Watch-DbaDbLogin .EXAMPLE Watch-DbaDbLogin -SqlInstance sqlserver -SqlCms SqlCms1 A list of all database instances within the Central Management Server SqlCms1 is generated. Using this list, the script enumerates all the processes and gathers login information and saves it to the table Dblogins in the DatabaseLogins database on SQL Server sqlserver. .EXAMPLE Watch-DbaDbLogin -SqlInstance sqlcluster -Database CentralAudit -ServersFromFile .\sqlservers.txt A list of servers is gathered from the file sqlservers.txt in the current directory. Using this list, the script enumerates all the processes and gathers login information and saves it to the table Dblogins in the CentralAudit database on SQL Server sqlcluster. .EXAMPLE Watch-DbaDbLogin -SqlInstance sqlserver -SqlCms SqlCms1 -SqlCredential $cred A list of servers is generated using database instance names within the SQL2014Clusters group on the Central Management Server SqlCms1. Using this list, the script enumerates all the processes and gathers login information and saves it to the table Dblogins in the DatabaseLogins database on sqlserver. #> [CmdletBinding(DefaultParameterSetName = "Default")] param ( [parameter(Mandatory = $true)] [Alias("ServerInstance", "SqlServer")] [DbaInstance]$SqlInstance, [object]$Database, [string]$Table = "DbaTools-WatchDbLogins", [PSCredential]$SqlCredential, # Central Management Server [string]$SqlCms, # File with one server per line [string]$ServersFromFile, [switch]$Silent ) process { if (Test-Bound 'SqlCms', 'ServersFromFile' -Not) { Stop-Function -Message "You must specify a server list source using -SqlCms or -ServersFromFile" return } Write-Message -Level Verbose -Message "Attempting to connect to $SqlInstance" try { Write-Message -Level Verbose -Message "Connecting to $SqlInstance" $serverDest = Connect-SqlInstance -SqlInstance $SqlInstance -SqlCredential $SqlCredential } catch { Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $SqlInstance -Continue } $systemdbs = "master", "msdb", "model", "tempdb" $excludedPrograms = "Microsoft SQL Server Management Studio - Query", "SQL Management" <# Get servers to query from Central Management Server or File #> if ($SqlCms) { try { $servers = Get-DbaRegisteredServerName -SqlInstance $SqlCms -SqlCredential $SqlCredential -Silent } catch { Stop-Function -Message "The CMS server, $SqlCms, was not accessible." -Target $SqlCms -ErrorRecord $_ return } } if (Test-Bound 'ServersFromFile') { if (Test-Path $ServersFromFile) { $servers = Get-Content $ServersFromFile } else { Stop-Function -Message "$ServersFromFile was not found." -Target $ServersFromFile return } } <# Process each server #> foreach ($instance in $servers) { Write-Message -Level Verbose -Message "Attempting to connect to $instance" try { Write-Message -Level Verbose -Message "Connecting to $instance" $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $SqlCredential -MinimumVersion 9 } catch { Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue } if (!(Test-SqlSa $server)) { Write-Warning "Not a sysadmin on $instance, resultset would be underwhelming. Skipping."; continue } $sql = " SELECT s.login_time AS [LoginTime] , s.login_name AS [Login] , ISNULL(s.host_name,N'') AS [Host] , ISNULL(s.program_name,N'') AS [Program] , ISNULL(r.database_id,N'') AS [DatabaseId] , ISNULL(DB_NAME(r.database_id),N'') AS [Database] , CAST(~s.is_user_process AS bit) AS [IsSystem] , CaptureTime = (SELECT GETDATE()) FROM sys.dm_exec_sessions AS s LEFT OUTER JOIN sys.dm_exec_requests AS r ON r.session_id = s.session_id" Write-Message -Level Debug -Message $sql $procs = $server.Query($sql) | Where-Object { $_.Host -ne $sourceserver.ComputerNamePhysicalNetBIOS -and ![string]::IsNullOrEmpty($_.Host) } $procs = $procs | Where-Object { $systemdbs -notcontains $_.Database -and $excludedPrograms -notcontains $_.Program } if ($procs.Count -gt 0) { $procs | Select-Object @{Label="ComputerName"; Expression= {$server.NetName}}, @{Label="InstanceName"; Expression= {$server.ServiceName}}, @{Label="SqlInstance"; Expression= {$server.DomainInstanceName}}, LoginTime, Login, Host, Program, DatabaseId, Database, IsSystem, CaptureTime | Out-DbaDataTable | Write-DbaDataTable -SqlInstance $serverDest -Database $Database -Table $Table -AutoCreateTable Write-Output "Added process information for $instance to datatable." } else { Write-message -Level Verbose -Message "No data returned for $instance." } } } end { Test-DbaDeprecation -DeprecatedOn "1.0.0" -Silent:$false -Alias Watch-SqlDbLogin } } |