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PowerShell PowerCLI Get-VMHost

Gathering virtual machine (VM) host information is crucial for managing and maintaining a VMware environment effectively. Here are several key reasons why administrators typically need to gather VM host information:

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  • Inventory Management: It's essential to maintain an up-to-date inventory of all VMs and their associated hosts. This helps administrators track resources, monitor usage, and plan for capacity management.

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  • Performance Monitoring: Understanding the host information allows administrators to monitor the performance metrics of both individual hosts and VMs. This includes CPU usage, memory utilization, storage performance, and network activity, which helps in identifying performance bottlenecks and optimizing resource allocation.

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  • Troubleshooting: When issues arise, having detailed host information enables quicker troubleshooting. Administrators can identify which host a VM is running on and check for any host-specific issues that may be affecting VM performance or availability.

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  • Resource Allocation and Optimization: By knowing the host details, administrators can make informed decisions about resource allocation and VM placement. They can balance workloads across hosts to ensure optimal performance and resource utilization.

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  • Security and Compliance: Host information is critical for maintaining security and compliance standards. Administrators can track host configurations, apply security patches, and ensure that hosts meet organizational or regulatory requirements.

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  • Backup and Disaster Recovery: Host information helps in planning and executing backup and disaster recovery strategies. Administrators can identify which VMs reside on which hosts, prioritize backups, and implement recovery plans efficiently.

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  • Lifecycle Management: Managing the lifecycle of hosts involves tasks such as upgrading host software, replacing hardware, and retiring old hosts. Detailed host information facilitates effective lifecycle management planning and execution.

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In summary, gathering VM host information is fundamental for maintaining the health, performance, security, and efficiency of a VMware environment. It supports various administrative tasks, from daily operations to strategic planning and compliance management.

Gather VM Host Information
  • Format Data
  • Out-GridView

Get-VMHost | select-object Name, LicenseKey, state, connectionstate, powerstate, manufacturer, model, ProcessorType, NumCPU, @{l='CPUtotalMhz';e={("{0:N0}" -f $_.CPUtotalMhz)}}, @{l='CpuUsageMHz';e={("{0:N0}" -f $_.CpuUsageMHz)}} , @{l='MemoryTotalGB';e={($_.memorytotalGB).tostring("##.##")}},  @{l='MemoryUsageGB';e={($_.memoryUsageGB).tostring("##.##")}}, version | Out-GridView
        

PowerShell VMware Host Using PowerCLI
Gather VM Host Information
  • Format Data
  • CSS & Header
  • Convert to HTML
  • Export to File
  • Attach and Email
     

​    <#

 

    PowerCLI 6.0 Load

   & 'C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\Scripts\Initialize-PowerCLIEnvironment.ps1'

 

    PowerCLI 6.5 Load

   & 'C:\Program Files (x86)\VMware\Infrastructure\PowerCLI\Scripts\Initialize-PowerCLIEnvironment.ps1'

 

    #>

 

Remove-Item "C:\temp\MyHTMLFile.html"

 

& 'C:\Program Files (x86)\VMware\Infrastructure\PowerCLI\Scripts\Initialize-PowerCLIEnvironment.ps1'

 

$vCenter = "YourvCenterServer"

$UserName = "YourUsername"

$Password = "YourPassword"

 

Connect-VIServer -Server $vCenter -Protocol https -User $UserName -Password $Password

 

$MyHosts = Get-VMHost | Select Name, ConnectionState, Version, Build, @{l = 'RAM Total GB'; e = { ($_.MemoryTotalGB).tostring("#.##") } }, @{l = 'RAM Usage GB'; e = { ($_.MemoryUsageGB).tostring("#.##") } }, @{l = 'RAM Free GB'; e = { ($_.MemoryTotalGB - $_.MemoryUsageGB).tostring("#.##") } }, @{l = 'CPU Used GHz'; e = { ($_.CPUUsageMHZ / 1000) } }, @{l = 'CPU Total GHz'; e = { ($_.CpuTotalMhz / (1000)) } } | Sort-Object Name

 

# HTML/CSS style for the output file

 

$head = " <style>"

$head += "BODY{background-color:white;}"

$head += "TABLE{border-width: 1px;border-style: solid;border-color: black;border-collapse: collapse; width:1200px}"

$head += "TH{border-width: 1px;padding:0px;border-style: solid;border-color: black;background-color:yellow}"

$head += "TD{border-width: 1px;padding: 0px;border-style: solid;border-color: black}"

$head += "</style>"


 

# Write the output to an HTML file

$myHosts | ConvertTo-HTML -Head $head -Body $strMail | Out-File C:\temp\MyHTMLFile.html

 

# Mail the output file

$msg = new-object Net.Mail.MailMessage

$att = new-object Net.Mail.Attachment("C:\temp\MyHTMLFile.html")

$smtp = new-object Net.Mail.SmtpClient("YourMailRelayHere")

$msg.From = "YourEmail@Your.com"

$msg.To.Add("YourEmail@Your.com")

$msg.Subject = "ESXI Build Information"

$msg.IsBodyHtml = 1

$msg.Body = Get-Content C:\temp\MyHTMLFile.html

$smtp.Send($msg)

 

Disconnect-viserver -server $vCenter -Confirm:$False             

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