MSSQL/WMI/PowerShell结合篇（三）执行PowerShell远程脚本

实时监控的基本原理：WMI Monitor—>数据库服务器(内网)—>PowerShell—>监控服务器(内外网)—>发送微信

前面已介绍如何创建WMI Monitor，本文介绍如何执行PowerShell远程脚本，实现将WMI获取到的信息从数据库服务器传到监控服务器，即数据库服务器(内网)—>PowerShell—>监控服务器(内外网)

一、帐号密码信息加密

设置密钥，并将密钥、帐号、密码加密后信息存放于文本中

1、设置加密密钥

function Set-Key {

param([string]$string)

$length = $string.length

$pad = 32-$length

if (($length -lt 16) -or ($length -gt 32)) {Throw "String must be between 16 and 32 characters"}

$encoding = New-Object System.Text.ASCIIEncoding

$bytes = $encoding.GetBytes($string + "0" * $pad)

return $bytes

}

2、加密方法

##set Encrypted Data

function Set-EncryptedData {

param($key,[string]$plainText)

$securestring = new-object System.Security.SecureString

$chars = $plainText.toCharArray()

foreach ($char in $chars) {$secureString.AppendChar($char)}

$encryptedData = ConvertFrom-SecureString -SecureString $secureString -Key $key

return $encryptedData

}

3、解密方法

##get Encrypted Data

function Get-EncryptedData {

param($key,$data)

$data | ConvertTo-SecureString -key $key |

ForEach-Object {[Runtime.InteropServices.Marshal]::PtrToStringAuto([Runtime.InteropServices.Marshal]::SecureStringToBSTR($_))}

}

二、创建远程会话，并执行远程脚本

获取密钥，并对帐号密码进行解密

$idkeystr=gc D:\xxx\IDkey.txt

$userid=gc D:\xxx\ID.txt

$IDkey=set-key $idkeystr

$appServerUser=get-EncryptedData $IDkey $userid

$pwkeystr=gc D:\xxx\PWkey.txt

$passwd=gc D:\xxx\PW.txt

$PWkey=set-key $pwkeystr

$appServerPwd=get-EncryptedData $PWkey $passwd

$appServer='MonitorServer'

$password = ConvertTo-SecureString $appServerPwd -AsPlainText -Force 

$appCred = New-Object System.Management.Automation.PsCredential($appServerUser,$password)

##创建会话

$s = New-PSSession -ComputerName $appServer -Credential $appCred -UseSSL -SessionOption (New-PSSessionOption -SkipCACheck -SkipCNCheck) -Authentication Negotiate

##执行无参数脚本

Invoke-Command -Session $s -ScriptBlock {powershell -File E:\\xxx\\xxx.ps1}

##执行带参数脚本

Invoke-Command -Session $s -ScriptBlock {powershell -File E:\\xxx\\xxx.ps1 $args[0] $args[1] $args[2]} -ArgumentList $text1,$text2,$text3

##删除会话

$s|Remove-PSSession

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