Why not just get the list of servers dynamically from Active Directory? Use the LastBootupTime property on the Win32_OperatingSystem WMI class to see when the system last booted up.
$ServerList = Get-ADComputer -Properties operatingsystem -Filter
'operatingsystem -like "*server*"';
foreach ($Server in $ServerList) {
'{0},{1}' -f $Server.Name, (Get-WmiObject -ComputerName $Server.Name
-Class Win32_OperatingSystem).LastBootupTime;
}
Results look like this:
Cheers,
Trevor Sullivan
From: listsad...@lists.myitforum.com [mailto:listsad...@lists.myitforum.com]
On Behalf Of Daniel Chenault
Sent: Monday, March 10, 2014 4:01 PM
To: Scripting
Subject: [scripting] hit or miss
We had an outage over the weekend and I've been tasked with discovering
which servers were affected. Get-eventlog should help here, right? Not
working... I ran it against a single machine I know for sure was affected
and it worked. Now it's skipping over machines I know were affected. Mongo
confused...
#server-out.txt is all servers dumped from AD
$servers = Get-Content c:\admin\server_out.txt
$startdate = "3/8/2014 10:30:00 PM"
$enddate = "3/9/2014 01:00:00 am"
foreach ($server in $servers)
{
write-host "Testing connection to" $server
if((Test-Connection -Cn $server -BufferSize 16 -Count 1 -ea 0 -quiet))
{
$holder = $null
$holder = Get-EventLog system -After $startdate -Before $enddate
-ComputerName $server | where {$_.eventid -eq 41}
write-host $holder
if ($holder -ne $null)
{
write-host $server "was affected"
write-host "Appending " + $server + " to file"
Out-File -InputObject $server -FilePath c:\admin\affected.txt
-append
}
}
}
NB: source is Kernel-Power
<<image001.png>>
