{"id":810789,"date":"2026-05-21T12:00:52","date_gmt":"2026-05-21T12:00:52","guid":{"rendered":"https:\/\/www.ninjaone.com\/?post_type=script_hub&p=810789"},"modified":"2026-05-21T12:00:52","modified_gmt":"2026-05-21T12:00:52","slug":"como-aumentar-o-tamanho-do-arquivo-de-registro-de-eventos-powershell","status":"publish","type":"script_hub","link":"https:\/\/www.ninjaone.com\/pt-br\/script-hub\/como-aumentar-o-tamanho-do-arquivo-de-registro-de-eventos-powershell\/","title":{"rendered":"Como aumentar de forma eficiente o tamanho do arquivo de registro de eventos com o PowerShell"},"content":{"rendered":"

Os logs de eventos em plataformas Windows oferecem informa\u00e7\u00f5es valiosas sobre as opera\u00e7\u00f5es do sistema e poss\u00edveis problemas. Dessa forma, os profissionais de TI precisam de uma maneira de ajustar o tamanho desses registros para acomodar diferentes requisitos. Este artigo se aprofunda em um script do PowerShell criado especificamente para aqueles que querem saber como aumentar o tamanho do arquivo de registro de eventos<\/strong>, garantindo que os sistemas estejam sempre sob vigil\u00e2ncia adequada.<\/p>\n

Hist\u00f3rico<\/h2>\n

O PowerShell, a estrutura de automa\u00e7\u00e3o de tarefas da Microsoft, tornou-se uma ferramenta indispens\u00e1vel para profissionais de TI em todo o mundo. Entre seus in\u00fameros recursos est\u00e1 a capacidade de modificar as configura\u00e7\u00f5es do sistema, incluindo o tamanho dos registros de eventos. Como os sistemas geram grandes quantidades de registros ao longo do tempo, ter a capacidade de ajustar a capacidade de armazenamento desses registros \u00e9 fundamental para os provedores de servi\u00e7os gerenciados (MSPs)<\/a> e administradores de TI.<\/p>\n

O roteiro<\/h2>\n
#Requires -Version 5.1\r\n\r\n<#\r\n.SYNOPSIS\r\n    Changes the max size for the specified Event Logs.\r\n.DESCRIPTION\r\n    Changes the max size for the specified Event Logs.\r\n    Common log names used: Security, Application, System\r\n    To get a list of Event Log names from your system you can run:\r\n        Get-WinEvent -ListLog * | Select-Object LogName\r\n.EXAMPLE\r\n     -LogName Security -MaxSize 50MB\r\n    Changes the max log size for Security to 50MB\r\n.EXAMPLE\r\n     -LogName Security, Application, System -MaxSize 50MB\r\n    Changes the max log size for Security, Application, and System to 50MB\r\n.OUTPUTS\r\n    None\r\n.NOTES\r\n    Windows 10 defaults to 20MB \/ 20480KB\r\n\r\n    Minimum OS Architecture Supported: Windows 10, Windows Server 2016\r\n    Release Notes:\r\n    Initial Release\r\nBy using this script, you indicate your acceptance of the following legal terms as well as our Terms of Use at https:\/\/www.ninjaone.com\/terms-of-use.\r\n    Ownership Rights: NinjaOne owns and will continue to own all right, title, and interest in and to the script (including the copyright). NinjaOne is giving you a limited license to use the script in accordance with these legal terms. \r\n    Use Limitation: You may only use the script for your legitimate personal or internal business purposes, and you may not share the script with another party. \r\n    Republication Prohibition: Under no circumstances are you permitted to re-publish the script in any script library or website belonging to or under the control of any other software provider. \r\n    Warranty Disclaimer: The script is provided \u201cas is\u201d and \u201cas available\u201d, without warranty of any kind. NinjaOne makes no promise or guarantee that the script will be free from defects or that it will meet your specific needs or expectations. \r\n    Assumption of Risk: Your use of the script is at your own risk. You acknowledge that there are certain inherent risks in using the script, and you understand and assume each of those risks. \r\n    Waiver and Release: You will not hold NinjaOne responsible for any adverse or unintended consequences resulting from your use of the script, and you waive any legal or equitable rights or remedies you may have against NinjaOne relating to your use of the script. \r\n    EULA: If you are a NinjaOne customer, your use of the script is subject to the End User License Agreement applicable to you (EULA).\r\n#>\r\n\r\n[CmdletBinding(SupportsShouldProcess)]\r\nparam (\r\n    # Event Log name\r\n    # https:\/\/learn.microsoft.com\/en-us\/powershell\/module\/microsoft.powershell.management\/limit-eventlog?view=powershell-5.1#-logname\r\n    [Parameter(Mandatory = $true)]\r\n    [ValidateScript(\r\n        {\r\n            if ( -not $($_ | Where-Object { $_ -in $(Get-WinEvent -ListLog * | Select-Object LogName).LogName }) ) {\r\n                throw \"$_ is not a valid Event Log Name.\"\r\n            }\r\n            else {\r\n                $true\r\n            }\r\n        }\r\n    )]\r\n    [String[]]\r\n    $LogName,\r\n    # The max size of the event log storage in KB.\r\n    # Use KB, MB, or GB after your number like 111MB for example.\r\n    [Parameter(Mandatory = $true)]\r\n    [Int64]\r\n    [ValidateRange(64KB, 4GB)]\r\n    $MaxSize\r\n)\r\n\r\nbegin {\r\n    function Test-IsElevated {\r\n        $id = [System.Security.Principal.WindowsIdentity]::GetCurrent()\r\n        $p = New-Object System.Security.Principal.WindowsPrincipal($id)\r\n        $p.IsInRole([System.Security.Principal.WindowsBuiltInRole]::Administrator)\r\n    }\r\n\r\n    if (-not (Test-IsElevated)) {\r\n        Write-Error -Message \"Access Denied. Please run with Administrator privileges.\"\r\n        exit 1\r\n    }\r\n\r\n    \"Used Parameters:\"\r\n    $(\r\n        $PSBoundParameters.Keys | ForEach-Object {\r\n            $Key = $_\r\n            $Value = $PSBoundParameters[\"$_\"] -join ', '\r\n            \"-$Key $Value\"\r\n        }\r\n    ) -join ' '\r\n\r\n    # Look for Event log names that don't exist\r\n    if ($($LogName | ForEach-Object { $_ -notin $(Get-WinEvent -ListLog * | Select-Object LogName).LogName })) {\r\n        $InvalidLogNames = $LogName | Where-Object { $_ -notin $(Get-WinEvent -ListLog * | Select-Object LogName).LogName }\r\n        Write-Error \"Invalid Log Names Found.\"\r\n        Write-Host \"Invalid Log Names: $($InvalidLogNames -join ', ')\"\r\n        exit 1\r\n    }\r\n\r\n    \"Current Log Sizes:\"\r\n    Get-WinEvent -ListLog $LogName | Select-Object LogName, MaximumSizeInBytes | ForEach-Object {\r\n        \"$($_.LogName): $($_.MaximumSizeInBytes \/ 1024)KB\"\r\n    }\r\n}\r\nprocess {\r\n    if ($PSCmdlet.ShouldProcess($($LogName -join ','), \"Limit-EventLog\")) {\r\n        Limit-EventLog -LogName $LogName -MaximumSize $MaxSize -ErrorAction Stop\r\n        # -ErrorAction Stop will exit and return an exit code of 1\r\n        \"Changed Log Sizes to:\"\r\n        Get-WinEvent -ListLog $LogName | Select-Object LogName, MaximumSizeInBytes | ForEach-Object {\r\n            \"$($_.LogName): $($_.MaximumSizeInBytes \/ 1024)KB\"\r\n        }\r\n    }\r\n    else {\r\n        # If -WhatIf was used then print out what the changes would have been.\r\n        \"Would have changed the max log size(s) of: $($LogName -join ',') to $($MaxSize \/ 1024)KB\"\r\n    }\r\n}\r\nend {}<\/pre>\n
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Detalhamento<\/h2>\n
O script come\u00e7a validando seus requisitos de ambiente. Em seguida, ele faz o seguinte:<\/p>\n