Top 25 PowerCLI Commands Every VMware Admin Should Know

Introduction

PowerCLI is the command-line toolkit that turns VMware administrators into automation professionals. Whether you are troubleshooting issues, deploying new workloads, or auditing your environment, knowing the right commands makes your workflow faster and more reliable.

This article covers the top 25 PowerCLI commands that every vSphere admin should know. These are organized into categories: connection, VM management, host operations, storage, and automation essentials.

1–5: Connection and Session Basics

Connect-VIServer -Server "vcenter.lab.local"
Disconnect-VIServer -Server "vcenter.lab.local" -Confirm:$false
Get-VIServer
Get-PowerCLIConfiguration
Set-PowerCLIConfiguration -InvalidCertificateAction Ignore -Confirm:$false

6–10: VM Inventory and State Management

Get-VM
Get-VM -Name "AppServer01"
Start-VM -VM "AppServer01"
Stop-VM -VM "AppServer01" -Confirm:$false
Restart-VMGuest -VM "AppServer01"

11–15: Snapshots and Tools Monitoring

Get-Snapshot -VM "AppServer01"
New-Snapshot -VM "AppServer01" -Name "PreUpdate"
Remove-Snapshot -VM "AppServer01" -Name "PreUpdate" -Confirm:$false
Get-VM | Where-Object {$_.ExtensionData.Guest.ToolsStatus -ne "toolsOk"}
Get-VM | Get-VMQuestion

16–20: Host and Cluster Insights

Get-VMHost
Get-Cluster
Get-VMHost | Select Name, ConnectionState, Version
Set-VMHost -State Maintenance
Get-VMHostService | Where-Object {$_.Running -eq $false}

21–25: Automation, Reports, and Exports

Get-VM | Export-Csv "C:\Reports\VM_Inventory.csv" -NoTypeInformation
Get-VM | Get-Snapshot | Export-Csv "C:\Reports\Snapshot_Report.csv" -NoTypeInformation
Get-Datastore | Select Name, FreeSpaceGB, CapacityGB
Get-VirtualSwitch -VMHost "esxi01.lab.local"
Get-TagAssignment -Entity (Get-VM -Name "WebApp01")

Diagram: PowerCLI Command Categories

Tips for Mastering PowerCLI Commands

• Use Get-Help <Command> -Full for inline documentation
• Use -WhatIf when testing destructive commands
• Group commands into task-specific scripts
• Use Out-GridView for interactive visual selection

Use Case: Rapid Troubleshooting Toolkit

Keep the following in your daily toolkit:

# Check all powered off VMs
Get-VM | Where-Object {$_.PowerState -eq "PoweredOff"}

# Hosts with disconnected state
Get-VMHost | Where-Object {$_.ConnectionState -ne "Connected"}

# Snapshots older than 7 days
Get-VM | Get-Snapshot | Where-Object {$_.Created -lt (Get-Date).AddDays(-7)}

Troubleshooting Common Mistakes