Powershell script for checking Windows Server cluster health

Background

You have been tasked to write a script to check the health of your Windows Server clusters. Additionally, you are also required to email the cluster health report to your team.

Script

In order for the following script to work, FailoverClusters module must be imported to the sever that this script will run on. This can be achived by running the following command and it is a one-time task.

Import-Module FailoverClusters

param(

#parameter 1, cluster server list

[String]$clustersfile,

#parameter 2, email the report or not. Default is Yes.

[String]$emailtoteam="Yes"

)

#start of summary text

$summary = "############## Summary ##############`r`n"

#define log file

$logfile = "path to log file_$(get-date -f yyyyMMddhhmmss).txt"

$clusterlist = get-content $clustersfile

foreach ($cluster in $clusterlist) {

$errorflag = 0

Write-Host $cluster

$summary += $cluster

$cluster | Out-File $logfile -Append

if(Get-Cluster -Name $cluster -ErrorAction Continue) {

### cluster node

$clusternodes = Get-ClusterNode -Cluster $cluster

$clusternodes | ft | Out-File $logfile -Append

foreach ($clusternode in $clusternodes) {

if(($clusternode | select -ExpandProperty State) -ne "Up") {

$errorflag += 1 #if the status is not UP, then report error

}

}

### cluster resource

$clusterresources = Get-ClusterResource -Cluster $cluster

$clusterresources | ft | Out-File $logfile -Append

foreach ($clusterresource in $clusterresources) {

if(($clusterresource | select -ExpandProperty State) -ne "Online") {

$errorflag += 1 #if the status is not ONLINE, then report error

}

}

if($errorflag -ne 0) {

"ERROR: Check cluster`r`n" | Out-File $logfile -Append

Write-Host "Check cluster" -BackgroundColor Red -ForegroundColor White

Write-Host ""

$summary += " : Check cluster`r`n"

} else {

"OK`r`n" | Out-File $logfile -Append

Write-Host "OK" -BackgroundColor Green -ForegroundColor Black

Write-Host ""

$summary += " : OK`r`n"

}

"----------------------------------------------`r`n" | Out-File $logfile -Append

} else {

"`r`nERROR: Cannot connect to cluster, Please check manually`r`n" | Out-File $logfile -Append

"----------------------------------------------`r`n" | Out-File $logfile -Append

Write-Host "Cannot connect to cluster, Please check manually" -BackgroundColor Red -ForegroundColor White

Write-Host ""

$summary += " : Cannot connect to cluster, Please check manually`r`n"

Continue

}

}

$summary | Out-File $logfile -Append

function sendemail{

if($emailtoteam -eq "Yes") {

$smtpserver = "smtp server hostname"

$dateformat = Get-Date -Format M

$emailsubject = "Daily cluster check - $dateformat"

$to = "report recipient mailbox"

Send-MailMessage -To $to -From "sender address" -SmtpServer $smtpserver -Subject $emailsubject -Body $summary -Attachments $logfile -Cc "copied recipient mailbox if any"

}

}

sendemail