PowerShell 发送美观的Vsphere DataStore警报

唐伯虎

　　豆子今天登陆Vsphere VCenter的时候，无意中发现有DataStore的警报信息，个别DataStore的使用空间超过90%了，需要清空一下SAN Volume的Snapshot。这个是运维常见的问题，那么顺便就用PowerShell写个脚本，定期检查发送邮件好了。
　　

　　脚本本身很容易，但是我想让他尽量的美观一些。
　　之前我写过一个博文可以自定义sytle的样式 http://beanxyz.blog.51cto.com/5570417/1786712， 不过现在看起来有些麻烦，还是觉得找找如果有比较好看的现成的css文件可以直接调用就好了。
　　

　　上网搜了搜 table有哪些现成的css模板，随便找了一个https://codepen.io/anon/pen/vJmLWL，看着还成
　　下载他的css下来

　　下载的css文件，保存在C:\tmp 目录
　　

@import url(https://fonts.googleapis.com/css?family=Roboto:400,500,700,300,100);
body {
  background-color: #3e94ec;
  font-family: "Roboto", helvetica, arial, sans-serif;
  font-size: 16px;
  font-weight: 400;
  text-rendering: optimizeLegibility;
}
div.table-title {
   display: block;
  margin: auto;
  max-width: 600px;
  padding:5px;
  width: 100%;
}
.table-title h3 {
   color: #fafafa;
   font-size: 30px;
   font-weight: 400;
   font-style:normal;
   font-family: "Roboto", helvetica, arial, sans-serif;
   text-shadow: -1px -1px 1px rgba(0, 0, 0, 0.1);
   text-transform:uppercase;
}
/*** Table Styles **/
.table-fill {
  background: white;
  border-radius:3px;
  border-collapse: collapse;
  height: 200px;
  margin: auto;
  max-width: 600px;
  padding:5px;
  width: 100%;
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
  animation: float 5s infinite;
}
 
th {
  color:#D5DDE5;;
  background:#1b1e24;
  border-bottom:4px solid #9ea7af;
  border-right: 1px solid #343a45;
  font-size:23px;
  font-weight: 100;
  padding:24px;
  text-align:left;
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
  vertical-align:middle;
}
th:first-child {
  border-top-left-radius:3px;
}
 
th:last-child {
  border-top-right-radius:3px;
  border-right:none;
}
  
tr {
  border-top: 1px solid #C1C3D1;
  border-bottom-: 1px solid #C1C3D1;
  color:#666B85;
  font-size:16px;
  font-weight:normal;
  text-shadow: 0 1px 1px rgba(256, 256, 256, 0.1);
}
 
tr:hover td {
  background:#4E5066;
  color:#FFFFFF;
  border-top: 1px solid #22262e;
  border-bottom: 1px solid #22262e;
}
 
tr:first-child {
  border-top:none;
}
tr:last-child {
  border-bottom:none;
}
 
tr:nth-child(odd) td {
  background:#EBEBEB;
}
 
tr:nth-child(odd):hover td {
  background:#4E5066;
}
tr:last-child td:first-child {
  border-bottom-left-radius:3px;
}
 
tr:last-child td:last-child {
  border-bottom-right-radius:3px;
}
 
td {
  background:#FFFFFF;
  padding:20px;
  text-align:left;
  vertical-align:middle;
  font-weight:300;
  font-size:18px;
  text-shadow: -1px -1px 1px rgba(0, 0, 0, 0.1);
  border-right: 1px solid #C1C3D1;
}
td:last-child {
  border-right: 0px;
}
th.text-left {
  text-align: left;
}
th.text-center {
  text-align: center;
}
th.text-right {
  text-align: right;
}
td.text-left {
  text-align: left;
}
td.text-center {
  text-align: center;
}
td.text-right {
  text-align: right;
}

　　

　　下面是正式的脚本，Set-CellColor也是别人写好的现成的，我直接拿来用了，主要功能是根据条件来更改html文件table的格子的颜色，比如某个值大于警报线就标记为红色等等。脚本中间加载Vsphere SnapIn，查询datastore的状态，最后把结果转换为html，通过Office365发送邮件出去
　　

　　

#修改颜色块的设定
Function Set-CellColor
{   
  [CmdletBinding()]
  Param (
    [Parameter(Mandatory,Position=0)]
    [string]$Property,
    [Parameter(Mandatory,Position=1)]
    [string]$Color,
    [Parameter(Mandatory,ValueFromPipeline)]
    [Object[]]$InputObject,
    [Parameter(Mandatory)]
    [string]$Filter,
    [switch]$Row
  )
  
  Begin {
    Write-Verbose "$(Get-Date): Function Set-CellColor begins"
    If ($Filter)
    {   If ($Filter.ToUpper().IndexOf($Property.ToUpper()) -ge 0)
      {   $Filter = $Filter.ToUpper().Replace($Property.ToUpper(),"`$Value")
        Try {
          [scriptblock]$Filter = [scriptblock]::Create($Filter)
        }
        Catch {
          Write-Warning "$(Get-Date): ""$Filter"" caused an error, stopping script!"
          Write-Warning $Error[0]
          Exit
        }
      }
      Else
      {   Write-Warning "Could not locate $Property in the Filter, which is required.  Filter: $Filter"
        Exit
      }
    }
  }
  
  Process {
    ForEach ($Line in $InputObject)
    {   If ($Line.IndexOf("<tr><th") -ge 0)
      {   Write-Verbose "$(Get-Date): Processing headers..."
        $Search = $Line | Select-String -Pattern '<th ?[a-z\-:;"=]*>(.*?)<\/th>' -AllMatches
        $Index = 0
        ForEach ($Match in $Search.Matches)
        {   If ($Match.Groups[1].Value -eq $Property)
          {   Break
          }
          $Index ++
        }
        If ($Index -eq $Search.Matches.Count)
        {   Write-Warning "$(Get-Date): Unable to locate property: $Property in table header"
          Exit
        }
        Write-Verbose "$(Get-Date): $Property column found at index: $Index"
      }
      If ($Line -match "<tr( style=""background-color:.+?"")?><td")
      {   $Search = $Line | Select-String -Pattern '<td ?[a-z\-:;"=]*>(.*?)<\/td>' -AllMatches
        $Value = $Search.Matches[$Index].Groups[1].Value -as [double]
        If (-not $Value)
        {   $Value = $Search.Matches[$Index].Groups[1].Value
        }
        If (Invoke-Command $Filter)
        {   If ($Row)
          {   Write-Verbose "$(Get-Date): Criteria met!  Changing row to $Color..."
            If ($Line -match "<tr style=""background-color:(.+?)"">")
            {   $Line = $Line -replace "<tr style=""background-color:$($Matches[1])","<tr style=""background-color:$Color"
            }
            Else
            {   $Line = $Line.Replace("<tr>","<tr style=""background-color:$Color"">")
            }
          }
          Else
          {   Write-Verbose "$(Get-Date): Criteria met!  Changing cell to $Color..."
            $Line = $Line.Replace($Search.Matches[$Index].Value,"<td style=""background-color:$Color"">$Value</td>")
          }
        }
      }
      Write-Output $Line
    }
  }
  
  End {
    Write-Verbose "$(Get-Date): Function Set-CellColor completed"
  }
}
#加载Vsphere
function Load-PowerCLI
{
  #pls download and install module first
  Add-PSSnapin VMware.VimAutomation.Core
   # Add-PSSnapin VMware.VimAutomation.Vds
   # Add-PSSnapin VMware.VumAutomation
  . "C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\Scripts\Initialize-PowerCLIEnvironment.ps1"
}
#判断是否已经加载SnapIn
$snapins=Get-PSSnapin
if($snapins.name -eq "VMware.VimAutomation.Core")
{
  Write-Host "Vsphere SnapIn is loaded" -ForegroundColor Cyan
}
else{
  Load-PowerCLI
}
#绑定VCenter
Connect-VIServer sydvcs2012
#获取DataStore的数据
$report = @()
foreach($cluster in Get-Cluster){
  Get-VMHost -Location $cluster | Get-Datastore | %{
    $info = "" | select DataCenter, Cluster, Name, Capacity, Free, 'UsagePercentage(%)'
    $info.Datacenter = $_.Datacenter
    $info.Cluster = $cluster.Name
    $info.Name = $_.Name 
    $info.Capacity = [math]::Round($_.capacityMB/1024,2) 
    $info.Free="{0:N1}" -f $_.FreeSpaceGB
    $info.'UsagePercentage(%)'=[math]::round(100*($_.CapacityGB-$_.FreeSpaceGB)/$_.CapacityGB,2)
    $report += $info
  }
}

#通过Office365发送邮件
$from = "aaa@abc.com"
$to = "bean@abc.com"
$smtp = "smtp.office365.com" 
$sub = "DataStore list" 
$secpasswd = ConvertTo-SecureString "Password" -AsPlainText -Force 
$mycreds = New-Object System.Management.Automation.PSCredential ($from, $secpasswd)
#指定css模板转换数据为html格式，根据条件指定cell的颜色
$htmlbody=$report| ConvertTo-Html -Body "<H1> DataStore </H1>" -CssUri C:\tmp\table.css | Set-CellColor -Property "UsagePercentage(%)" -Color red -Filter "UsagePercentage(%) -gt 80" 
#发送邮件
Send-MailMessage -To $to -From $from -Subject $sub -Body ($htmlbody|Out-String) -Credential $mycreds -SmtpServer $smtp -DeliveryNotificationOption Never -BodyAsHtml -UseSsl -port 587

　　

　　我收到的邮件效果
　　

　　

　　最后添加脚本到task scheduler里面让他每日自动运行就行了