ActiveXperts Network Monitor

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NOTE: ActiveXperts Network Monitor ships with a large collection of PowerShell scripts to monitor any aspect of your network. Most PowerShell scripts also have a VBScript implementation. Download Now »

Memory check

You can use any of the Powershell programs below in ActiveXperts Network Monitor. Click here for an explanation about how to include scripts in ActiveXperts Network Monitor.

Example

#################################################################################
# ActiveXperts Network Monitor PowerShell script, © ActiveXperts Software B.V.
# For more information about ActiveXperts Network Monitor, visit the ActiveXperts 
# Network Monitor web site at http://www.activexperts.com
#################################################################################
# Script:
#     Memory.ps1
# Description:
#     Checks memory usage on a (remote) computer
# Parameters:
#     1) strComputer (string)  - Hostname or IP address of the computer you want to monitor
#     2) strFlagFree (string)  - Either "free" or "used"
#     3) numLimitMB (number)   - Limit, in MB
#     4) strAltCredentials (string, optional) - Alternate credentials
# Usage:
#     .\Memory.ps1 "" " | used>" MBs " | <>"
# Sample:
#     .\Memory.ps1 "localhost" "free" 50
#################################################################################

# Parameters
param
  (
    [string]$strComputer,
    [string]$strFlagFree,
    [int]$numLimitMB,
    [string]$strAltCredentials
  )

cls

# Check paramters input
if( ([string]$strComputer -eq "") -or ([string]$strFlagFree -eq "") -or ($numLimitMB -eq "") )
  {
    echo "UNCERTAIN: Invalid number of parameters - Usage: .\memory.ps1  |  [alt-credentials]"
    exit
  }

# Create object
if( [string]$strAltCredentials -eq ""  )
  {
    $objMem = Get-WmiObject -ComputerName $strComputer -Class Win32_OperatingSystem
  }
else
  {
    $objNmCredentials = new-object -comobject ActiveXperts.NMServerCredentials
    $strLogin = $objNmCredentials.GetLogin( $strAltCredentials )
    $strPassword = $objNmCredentials.GetPassword( $strAltCredentials )
    if($strPassword -ne "") { $strPasswordSecure = ConvertTo-SecureString -string $strPassword -AsPlainText -Force }
    $objCredentials = new-object -typename System.Management.Automation.PSCredential $strLogin, $strPasswordSecure
    $objMem = Get-WmiObject -ComputerName $strComputer -Class Win32_OperatingSystem -Credential $objCredentials 
  }

#################################################################################
# The script itself
#################################################################################

if( $objMem -eq $null )
  {
    $res = "UNCERTAIN: Unable to connect. Please make sure that PowerShell and WMI are both installed on the monitered system. Also check your credentials"
    echo $res
    exit
  }

$freeMB = [math]::round( ( $objMem.FreePhysicalMemory / 1024 ), 0 )
$totalMB = [math]::round( ( $objMem.TotalVisibleMemorySize / 1024 ), 0 )
$usedMB = $totalMB - $freeMB

## echo "freeMB: " $freeMB
## echo "totalMB: " $totalMB
## echo "used: " $usedMB

# Free memory
if( $strFlagFree -eq "free" )
  {
    if( $freeMB -gt $numLimitMB )
      {
        $res = "SUCCESS: Free physical memory=[" + $freeMB + " MB], minimum required=[" + $numLimitMB + " MB] DATA:" + $freeMB
      }
    else
      {
        $res = "ERROR: Free physical memory=[" + $freeMB + " MB], minimum required=[" + $numLimitMB + " MB] DATA:" + $freeMB
      }
    echo $res
    exit
  }

# Used memory
if( $strFlagFree -eq "used" )
  {
    if( $usedMB -lt $numLimitMB )
      {
        $res = "SUCCESS: Used physical memory=[" + $usedMB + " MB], maximum allowed=[" + $numLimitMB + " MB] DATA: " + $usedMB 
      }
    else
      {
        $res = "ERROR: Used physical memory=[" + $usedMB + " MB], maximum allowed=[" + $numLimitMB + " MB] DATA: " + $usedMB 
      }
    echo $res
    exit
  }