不想使用我的 APC 附带的 APC 软件，我编写了一个 PowerShell 脚本来监控我的 UPS 并在电池电量达到 30% 时启动我的服务器的关闭序列。
该脚本通过 USB 重定向在虚拟化服务器上运行。该窗口始终保持打开状态，因为它监控主 UPS 电池电量的 WMI 输入。该脚本运行良好，但是我多次登录服务器并注意到屏幕上出现以下错误
Get-WmiObject : Call was canceled by the message filter. (Exception from HRESULT: 0x80010002 (RPC_E_CALL_CANCELED))
At C:\Users\user\Desktop\upsmonitor.ps1:38 char:27
+ $binfo = Get-WMIObject <<<< -class Win32_Battery -computername $system -namespace root\cimv2
+ CategoryInfo : InvalidOperation: (:) [Get-WmiObject], COMException
+ FullyQualifiedErrorId : GetWMICOMException,Microsoft.PowerShell.Commands.GetWmiObjectCommand
我认为这是由 WMI 活动中的一个问题引起的 - 我读过论坛说这是由 WMI 崩溃引起的。无论如何，这是有问题的，因为如果脚本需要运行并且它出错了，那么它对我没有好处。经常检查服务器并不理想，所以我想要一种方法
- 失败时重新执行脚本
- 至少在脚本失败时通知我
我已经阅读了-ErrorAction开关，但不确定如何在我的情况下实现它，或者它是否适用。通常我只会玩弄脚本，直到我能够解决问题，但它似乎只在我的生产环境中出现，而且不一致。我可能需要几个月的时间来解决这个问题，等待错误发生，希望我的修复工作。
我将不胜感激你们可以提供的任何帮助。
下面列出了该脚本。
## Variable Declaration
cls
$system = "."
$namespace = "root\CIMV2"
#SMTP Variables (for e-mail notifications)
$emailFrom = "ups@domain.com"
$emailto = "me@domain.com"
$subject = "UPS Notifications"
$PSEmailServer = "10.0.0.100"
#Check to see if the event log source exists, and create it if it doesn't
$sourceExists = get-eventlog -list | where-object {$_.logdisplayname -eq "UPS Monitor"}
if (! $sourceExists) {
new-eventlog -LogName "UPS Monitor" -source "UPS Monitor"
}
#Send the administrator a message to inform them of monitoring
$initialStatus = Get-WMIObject -class Win32_Battery -computer $system -namespace $namespace
send-mailmessage -From $emailFrom -To $emailTo -Subject $subject -Body "UPS Monitor Online: Monitoring UPS Status."
echo "UPS Monitor Online - Currently Monitoring UPS Status. DO NOT CLOSE THIS WINDOW!"
$eruntime = $initialstatus.estimatedruntime
#What's the status of the Battery upon starting the script
if ($initialStatus.batterystatus -eq 2) {
echo "Battery Status : On AC Power"
echo "Estimated Time remaining on charge : $eruntime minutes"
} elseif($initialStatus.batterystatus -eq 1) {
echo "Battery Status : Discharging"
echo "Estimated Time remaining on charge : $eruntime minutes"
}
write-eventlog -logname "UPS Monitor" -Source "UPS Monitor" -EntryType Information -EventID 1 -Message "UPS Monitor Online: Currently Monitoring UPS Status"
while($true)
{
$binfo = Get-WMIObject -class Win32_Battery -computername $system -namespace root\cimv2
if($binfo.BatteryStatus -eq 2) {
#On AC Power - No action required
}
if($binfo.BatteryStatus -eq 1){
#If UPS status is 1, UPS is discharging - Notifications will begin at 80% Battery Level
#echo "Battery Charge Percentage : " $binfo.EstimatedChargeRemaining
if($binfo.EstimatedChargeRemaining -eq 80){
#When the battery level gets to 80% write an event to the event log and e-mail the administrator
write-eventlog -logname "UPS Monitor" -Source "UPS Monitor" -EntryType Information -EventID 1 -Message "Power Failure Detected - 80% Battery Life Remaining"
send-mailmessage -From $emailFrom -To $emailTo -Subject $subject -Body "Power Failure Detected; Servers on Battery Power. Battery level is 80%"
start-sleep -seconds 30
}
elseif($binfo.EstimatedChargeRemaining -eq 60){
#When the battery level gets to 60% write an event to the event log and e-mail the administrator
write-eventlog -logname "UPS Monitor" -Source "UPS Monitor" -EntryType Information -EventID 1 -Message "Power Failure Detected : 60% Battery Life Remaining"
send-mailmessage -From $emailFrom -To $emailTo -Subject $subject -Body "Power Failure Detected; Servers on Battery Power. Battery level is 60%"
start-sleep -seconds 30
}
elseif($binfo.EstimatedChargeRemaining -eq 40){
#When the battery level gets to 40% write an event to the event log and e-mail the administrator and warn of shutdown
write-eventlog -logname "UPS Monitor" -Source "UPS Monitor" -EntryType Information -EventID 1 -Message "Power Failure Detected : 40% Battery Life Remaining"
send-mailmessage -From $emailFrom -To $emailTo -Subject $subject -Body "Power Failure Detected & Reserve battery is critical. Servers will be restarted at 30% battery life if AC power is not resumed"
start-sleep -seconds 30
}
elseif($binfo.EstimatedChargeRemaining -le 30){
#When the battery level gets to 30% being shutting down servers
write-eventlog -logname "UPS Monitor" -Source "UPS Monitor" -EntryType Information -EventID 1 -Message "Critical Battery Threshold Reached : Commencing Shutdown of servers"
send-mailmessage -From $emailFrom -To $emailTo -Subject $subject -Body "Power Failure Detected & Critical Battery Threshold has been Reached. Commencing Shutdown of Servers"
start-sleep -seconds 15
stop-computer -cn (Get-Content C:\Users\User\Desktop\serverlist.txt) -Force
}
}
}