Powershell脚本检查服务是否启动，如果没有启动它

Question

我已经构建了一个小型 powershell 脚本来检查服务是否已启动。如果未启动，请尝试启动它，然后等待一分钟并再次检查。不断重复这个过程，直到服务启动成功。我发现循环的行为不像我预期的那样，我似乎必须在循环中重新分配服务变量才能获得更新的状态。这是我的代码：

$ServiceName = 'Serenade'
$arrService = Get-Service -Name $ServiceName

if ($arrService.Status -ne 'Running'){
$ServiceStarted = $false}
Else{$ServiceStarted = $true}

while ($ServiceStarted -ne $true){
Start-Service $ServiceName
write-host $arrService.status
write-host 'Service started'
Start-Sleep -seconds 60
$arrService = Get-Service -Name $ServiceName #Why is this line needed?
if ($arrService.Status -eq 'Running'){
$ServiceStarted = $true}
}

如果我在没有倒数第三行（带有注释的行）的情况下运行代码，我会得到以下输出。我可以签入 Windows 服务管理器，并且该服务在第一个循环之后显然已启动。为什么需要倒数第三行？

鉴于这种行为，是否有更好的方法来编写此代码？

谢谢

Answer 1

$ServiceName = 'Serenade'
$arrService = Get-Service -Name $ServiceName

while ($arrService.Status -ne 'Running')
{

    Start-Service $ServiceName
    write-host $arrService.status
    write-host 'Service starting'
    Start-Sleep -seconds 60
    $arrService.Refresh()
    if ($arrService.Status -eq 'Running')
    {
        Write-Host 'Service is now Running'
    }

}

我们能否对多个服务使用相同的脚本，并在服务出现故障时发送一封电子邮件。

Answer 2

尽量让事情顺利进行——我在这里建议稍微修改一下 GuyWhoLikesPowershell 的建议。

我用一段时间替换了 if 和 until - 我检查了“Stopped”，因为如果状态是“starting”或“Stopping”，我不想开始。

$Service = 'ServiceName'
while ((Get-Service $Service).Status -eq 'Stopped') 
{
    Start-Service $Service -ErrorAction SilentlyContinue
    Start-Sleep 10
} 
Return "$($Service) has STARTED"

Answer 3

下面是一个紧凑的脚本，它将检查是否“正在运行”并尝试启动服务，直到服务返回为运行状态。

$Service = 'ServiceName'
If ((Get-Service $Service).Status -ne 'Running') {
   do {
       Start-Service $Service -ErrorAction SilentlyContinue
       Start-Sleep 10
   } until ((Get-Service $Service).Status -eq 'Running')
} Return "$($Service) has STARTED"

Answer 4

一个可能更简单的解决方案：

get-service "servicename*" | Where {$_.Status -eq 'Stopped'} | start-service

Answer 5

结合 Alaa Akoum 和 Nick Eagle 的解决方案，我可以循环访问一系列 Windows 服务，并在它们正在运行时停止它们。

# stop the following Windows services in the specified order:
[Array] $Services = 'Service1','Service2','Service3','Service4','Service5';

# loop through each service, if its running, stop it
foreach($ServiceName in $Services)
{
    $arrService = Get-Service -Name $ServiceName
    write-host $ServiceName
    while ($arrService.Status -eq 'Running')
    {
        Stop-Service $ServiceName
        write-host $arrService.status
        write-host 'Service stopping'
        Start-Sleep -seconds 60
        $arrService.Refresh()
        if ($arrService.Status -eq 'Stopped')
            {
              Write-Host 'Service is now Stopped'
            }
     }
 }

同样可以启动一系列服务，如果它们没有运行：

# start the following Windows services in the specified order:
[Array] $Services = 'Service1','Service2','Service3','Service4','Service5';

# loop through each service, if its not running, start it
foreach($ServiceName in $Services)
{
    $arrService = Get-Service -Name $ServiceName
    write-host $ServiceName
    while ($arrService.Status -ne 'Running')
    {
        Start-Service $ServiceName
        write-host $arrService.status
        write-host 'Service starting'
        Start-Sleep -seconds 60
        $arrService.Refresh()
        if ($arrService.Status -eq 'Running')
        {
          Write-Host 'Service is now Running'
        }
    }
}

Answer 6

给定$arrService = Get-Service -Name $ServiceName，$arrService.Status 是一个静态 属性，对应于调用时的值。需要时使用$arrService.Refresh() 将属性更新为当前值。

MSDN ~ ServiceController.Refresh()

通过将属性重置为其当前值来刷新属性值。

Answer 7

我认为您的代码可能过于复杂：如果您只是检查服务是否正在运行，如果没有，则运行它然后停止重新评估，以下就足够了：

Good point on the refresh.

$ServiceName = 'Serenade'
$arrService = Get-Service -Name $ServiceName

while ($arrService.Status -ne 'Running')
{

    Start-Service $ServiceName
    write-host $arrService.status
    write-host 'Service starting'
    Start-Sleep -seconds 60
    $arrService.Refresh()
    if ($arrService.Status -eq 'Running')
    {
        Write-Host 'Service is now Running'
    }

}

Answer 8

[Array] $servers = "Server1","server2";
$service='YOUR SERVICE'

foreach($server in $servers)

{
    $srvc = Get-WmiObject -query "SELECT * FROM win32_service  WHERE   name LIKE '$service' " -computername $server  ;
    $res=Write-Output $srvc | Format-Table -AutoSize $server, $fmtMode, $fmtState, $fmtStatus ;  
   $srvc.startservice() 
   $res
}