ConditionalForcedServerRestart.ps1 - PowerShellCommunity.org - Windows PowerShell Discussion Forums - Using PowerShell

ConditionalForcedServerRestart.ps1

Last Post 16 May 2008 09:28 PM by Joel "Jaykul" Bennett. 1 Replies.

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kscriss

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Posts:128

20 Mar 2008 11:03 AM
# # \\\\ //// # \\ - - // # @ @ # ---oOOo-( )-oOOo--- # # PowerShell Script: ConditionalForcedServerRestart.ps1 # # Author: Kevin Criss # # Description: # Reboots servers if they have not been rebooted in the last 30 minutes. Sometimes Windows Updates do not require a # system restart for every sever in an Systems-Application group of servers. Some systems require either all their # server are rebooted or none of their servers are rebooted. You might run two copies of this script. One copy # would perform a conditional forced restart on your group-a servers and then scheduled to run at a later time the 2nd # copy of this script will perform a condition forced restart on the group-b servers. To do this you would renamed # this script and then change the hard-coded $Inputfile. These Powershell scripts would be run as a .bat file scheudled tasks from you # run-hosting server. # ################################################ # Function Get-Uptime written by Brandon Shell # ################################################ # From Brandon Shell's blog at http://www.bsonposh.com/modules/wordpress/?p=18 # Filed on: February 7, 2007 @ 12:57 pm # With modifications by me necessary for this script and some Don Hite magic. Function Get-Uptime { Param([string]$server) Begin { function PingServer { Param([string]$srv) $pingresult = Get-WmiObject win32_pingstatus -f "address='$srv'" if($pingresult.statuscode -eq 0) {$true} else {$false} } function myUptime { param([string]$srv) $os = Get-WmiObject Win32_OperatingSystem -ComputerName $srv $LastBootUptime = $os.ConvertToDateTIme($os.LastBootUpTime) # Don Hite's magic formula has been applied to Brandon Shell's script. # http://www.myitforum.com/articles/4...0485 # $uptime = $os.LastBootUpTime # return $uptime return $LastBootUptime } function ConvertDate { param($LastBootUptime,[string]$srv) # param([string]$date,[string]$srv) # $year = $date.substring(0,4) # $Month = $date.Substring(4,2) # $day = $date.Substring(6,2) # $hour = $date.Substring(8,2) # $min = $date.Substring(10,2) # $sec = $date.Substring(12,2) # $RebootTime = New-Object System.DateTime($year,$Month,$day,$hour,$min,$sec) $RebootTime = $LastBootUpTime $now = [System.DateTime]::Now $uptime = $now.Subtract($RebootTime) $uptimeval = "$($uptime.days) days, $($uptime.Hours) hours, $($uptime.Minutes) minutes, $($uptime.seconds) seconds" $lastReboot = $rebootTime.toString() $sObject = New-Object -typename System.Object $sObject \| Add-Member -memberType noteProperty -name ServerName -Value $srv $sObject \| Add-Member -memberType noteProperty -name Days -Value $uptime.days $sObject \| Add-Member -memberType noteProperty -name Hours -Value $uptime.Hours $sObject \| Add-Member -memberType noteProperty -name Minutes -Value $uptime.Minutes $sObject \| Add-Member -memberType noteProperty -name Seconds -Value $uptime.seconds $sObject \| Add-Member -memberType noteProperty -name uptime -Value $uptimeval $sObject \| Add-Member -memberType noteProperty -name LastReboot -Value $rebootTime.ToUniversalTime() $sObject \| Add-Member -memberType noteProperty -name LastRebootUtc -Value $rebootTime.ToFileTimeUtc() $sObject \| Add-Member -memberType noteProperty -name LastRebootTime -Value $rebootTime $sObject \| Add-Member -memberType noteProperty -name PingServer -Value $True Write-Output $sObject } $process = @() $objCollection = @() } Process { if(PingServer $server) { # $result = myUptime $server # $srvObject = ConvertDate $result $server # $srvObject = ConvertDate $result $server $LastBootUpTime = myUptime $server $srvObject = ConvertDate $LastBootUptime $server $objCollection += $srvObject } else { $sObject = New-Object -typename System.Object $sObject \| Add-Member -memberType noteProperty -name ServerName -Value $srv $sObject \| Add-Member -memberType noteProperty -name Days -Value $Null $sObject \| Add-Member -memberType noteProperty -name Hours -Value $Null $sObject \| Add-Member -memberType noteProperty -name Minutes -Value $$Null $sObject \| Add-Member -memberType noteProperty -name Seconds -Value $Null $sObject \| Add-Member -memberType noteProperty -name uptime -Value $Null $sObject \| Add-Member -memberType noteProperty -name LastReboot -Value $Null $sObject \| Add-Member -memberType noteProperty -name LastRebootUtc -Value $Null $sObject \| Add-Member -memberType noteProperty -name LastRebootTime -Value $Null $sObject \| Add-Member -memberType noteProperty -name PingServer -Value $False # Write-Output $sObject $srvObject = $sObject $objCollection += $srvObject Write-Host "Server [$server] not Pingable" -foregroundcolor red } Write-Output $objCollection } End { } # End of Brandon Shell's Get-Uptime function which includes sub functions: PingServer, myUptime, and ConvertDate } ############################################ # Script Block $Check_If_Boot_Required # ############################################ $Check_If_Boot_Required = { $ServerName = $_.ServerName "Processing Server = $ServerName" \| Out-Host $result = Get-Uptime $ServerName If ($result.PingServer) { $LastReBoot = $result.LastReBoot $LastReBootTime = $result.LastRebootTime $Uptime = $result.uptime "Time Last Boot Time = $LastRebootTime" \| Out-Host "Universal Last Boot Time = $LastReBoot" \| Out-Host $LastBootTimeSpan = [TimeSpan]((get-date) - $LastReBoot) $MinutesSinceLastReboot = [int]$LastBootTimeSpan.TotalMinutes "Minutes Since Last Reboot = $MinutesSinceLastReboot" \| Out-Host # List the hotfixes for this server since yesterday. # $TodaysDate = Get-Date # $A = Get-WmiObject Win32_QuickFixEngineering -ComputerName $ServerName \| Where-Object { $_.InstalledOn } # $B = $A \| Where-Object {$(get-date($_.installedOn)) -ge $TodaysDate.AddDays(-1)} # $B \| foreach-object {$HotfixID = $_.HotfixID; $InstalledOn = $_.Installedon; $Description=$_.Description; $Body = $Body + " $HotfixID $Installedon $Description `r`n"} # The above 4 lines of code work, but I currently lack the confidence in this GWMI (or my familiarity with) to use it on our production servers. If ($MinutesSinceLastReboot -gt [int]30) # Has it been more than 30 minutes since this server was last restarted??? If so lets restart it. { "This sever $Server needs to be rebooted" \| Out-Host $Body = $Body + "`r`n Server = $Servername - Uptime = $Uptime. " $Body = $Body + "`r`n Server = $ServerName - Will be rebooted by this script. Its last reboot was on $LastRebootTime. " $Body = $Body + "`r`n " # Shutdown -r -f -m \\$ServerName -c "A non-restarting Windows Update occurred requiring a system restart for application reasons" # #################################################################################################################################### # The business end of this script. Uncomment out the above line of code to conditionally restart the servers in your $InputFile. # #################################################################################################################################### } Else { # No need to restart this server. "This server $Server appears to have been restarted within the last 30 minutes." \| Out-Host $Body = $Body + "`r`n Server = $Servername - Uptime = $Uptime. " $Body = $Body + "`r`n Server = $ServerName - Was not rebooted by this script. Its last reboot was on $LastReBootTime. " $Body = $Body + "`r`n " } } Else { # This server does not ping and can not be managed by this script. $StaffAlertWarning = $True $Body = $Body + "`r`n * Warning . " $Body = $Body + "`r`n Server = $ServerName - Is not currently pingable and therefore can not be managed by this script. " $Body = $Body + "`r`n " } } # # ############################################ # Main Routine # ############################################ # ################################################### Initializations ########################################################### $StartDate = Get-Date Set-Location "C:\Program Files\Scripts\" $InputFile = "C:\Program Files\Scripts\GroupA-ConditionalForcedRestartServers.csv" # $DoNotSendSpam = "C:\Program Files\Scripts\ManagersAndOnCallStaff.csv" ####################################################### Step 1 ################################################################ Import-Csv $InputFile \| ForEach-Object -Process {.$Check_If_Boot_Required} ####################################################### Step 2 ############################################################### $mail = New-Object System.Net.Mail.MailMessage $mail.From = New-Object System.Net.Mail.MailAddress("kcriss@iot.in.gov"); $mail.To.Add("EmailRecipient1@yourDomain.com"); # $mail.To.Add("EmailRecipient2@yourDomain.com"); # $mail.To.Add("EmailRecipient3@yourDomain.com"); # $mail.To.Add("EmailRecipient4@yourDomain.com"); # $mail.To.Add("EmailRecipient5@yourDomain.com"); If ($StaffAlertCritical -eq $True) { # Import-Csv $DoNotSendSpam \| ForEach-Object -Process {$EmailAddress=$_.EmailAddress;$Mail.To.Add("$EmailAddress")} $Body = $Body + "`r`n Critical error detected notify the primary applications contact. " $Body = $Body + "`r`n * Critical error detected notify the primary system administration contact. " } $date=date $ShortDate=$date.toshortdatestring() $ShortTime=$date.toshorttimestring() $mail.Subject = "ProjectName Conditional Forced Server Restart "+"$ShortDate"+" at "+"$ShortTime"; $Span = [TimeSpan]((get-date) - $StartDate) $ElapseTime =$Span.tostring() $Body = $Body + "`r`n " $Body = $Body + "`r`n Elapse runtime = $ElapseTime" "Elapse runtime = $ElapseTime" \| Out-Host " " \| Out-Host $DynamicSubject = $Null If ($StaffAlertWarning) { $DynamicSubject = " with Warning Errors!" } If ($StaffAlertError) { $DynamicSubject = " with Severe Errors!" } If ($StaffAlertCritical) { $DynamicSubject = " with Critical Errors!" } $mail.Subject += $DynamicSubject $mail.body = $Body # ./Highlight-syntax.ps1 ./ConditionalForcedServerRestart.ps1 -Linenumbers \| Out-File "C:\Program Files\Scripts\ConditionalForcedServerRestart.html" # The above line of code requires another script which is available free from the Sapiens scripting vault. # $mail.attachments.add("C:\Program Files\Scripts\ConditionalForcedServerRestart.html") $smtp = New-Object System.Net.Mail.SmtpClient("YourMailrelay.YourDomain.Com"); $smtp.Send($mail)

My blog: http://blogs.powershellcentral.com/kscriss/

Joel "Jaykul" Bennett User is Offline

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Posts:112
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16 May 2008 09:28 PM
This one also ought to go on the PowerShellScripting.com/scripts (not to say that you shouldn't put it here, just that it looks useful, and will have a better audience there -- especially as we've got some improvements in mind for the script repository, and we'll be bringing the existing scripts over. My main suggestion would be to move from the huge scriptblock to having another function. If you take like 118 and 119 and change them from this: $Check_If_Boot_Required = { to this: function Test-BootRequired { PROCESS { and then close it with two }} on line 169 ... Then I believe you can rewrite line 182 to be more efficient, and clearer, as well. Of course, you can invoke the scriptblock directly too (just like the function) -- if you put the PROCESS{...} around your code in your scriptblock, you could just pipe Import-CSV $inputFile\| &$Check_If_Boot_Required -- but I think it's generally a better idea to store your scriptblocks in the function provider instead of in the variable provider. Your line would end up like this: Import-Csv $InputFile \| Test-BootRequired By the way, does this send an email regardless of whether a reboot has been performed? I haven't run it yet...

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