當IIS使用Powershell響應緩慢時，如何回收appool？

Question

我正在嘗試編寫腳本來檢查Web應用程序的運行狀況。 例如，如果我在10秒鍾內沒有收到消息，則必須使用Powershell來回收我的apppool。或者除了200-ok的代碼外，我的應用程序池應該被回收。

請看下面的代碼和錯誤：

# Load IIS module:
Import-Module WebAdministration
while ($true) {
    write-host 'Runnig For Check app.xxx.com ...'

# First we create the request.
$HTTP_Request = [System.Net.WebRequest]::Create('https://app.xxx.com/')
Try
{
# We then get a response from the site.
$HTTP_Response = $HTTP_Request.GetResponse()

# We then get the HTTP code as an integer.
$HTTP_Status = [int]$HTTP_Response.StatusCode

If ($HTTP_Status -eq 200) {
    Write-Host "Site is OK!"
}
Else {
    Write-Host "The Site may be down, please check!"
    Restart-WebAppPool -Name "app.xxx.com"
}
}
Catch
{
     Stop-WebAppPool -Name "app.xxx.com"
     Restart-WebAppPool -Name "app.xxx.com"
}

# Finally, we clean up the http request by closing it.
$HTTP_Response.Close()

 Start-Sleep -Seconds 120
}

錯誤：

Restart-WebAppPool：必須重新啟動已停止的對象。 在C：\\ Scripts \\ CheckHealthHaydigo.ps1：25 char：6 + Restart-WebAppPool-名稱“ app.xxx.com” + ~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~ + + CategoryInfo：InvalidOperation：（:) [Restart-WebAppPool]，InvalidOperationException + FullyQualifiedErrorId：InvalidOperation，Microsoft.IIs.PowerShell.Provider.RestartAppPoolCommand

Answer 1

看來您應該在嘗試重新啟動應用程序池之前檢查其狀態。

if ((Get-WebAppPoolState -Name "app.xxx.com").Value -eq "Stopped") {
    Start-WebAppPool -Name "app.xxx.com"
}
else {
    Restart-WebAppPool -Name "app.xxx.com"
}