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Automate VM Power State Management in VMware vSphere with PowerShell

PowerShell scripts can significantly streamline your workflows in VMware vSphere by automating common tasks such as managing the power state of your virtual machines (VMs). The following script showcases how to retrieve the power state of all VMs in your vSphere environment and allows you to power on or off specific VMs based on their names. This script is perfect for system administrators looking to optimize their management tasks.
Ensure you have the necessary PowerCLI module installed and connected to your vSphere server before executing the script.
### Step 1: Load VMware PowerCLI Module
Before working with VMs, you need to make sure that the VMware PowerCLI module is loaded.
“`powershell

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# Load the VMware PowerCLI module
Import-Module VMware.PowerCLI

“`
### Step 2: Connect to the vSphere Server
Use the `Connect-VIServer` cmdlet to connect to your vSphere environment with the appropriate credentials.
“`powershell

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# Connect to the vSphere server
$vcServer = vcenter.domain.com
$vcUsername = username
$vcPassword = password # Ensure to use a secure method to store passwords
$securePassword = ConvertTo-SecureString $vcPassword -AsPlainText -Force
$cred = New-Object System.Management.Automation.PSCredential($vcUsername, $securePassword)
Connect-VIServer -Server $vcServer -Credential $cred

“`
### Step 3: Get Power State of All VMs
Retrieve the current power state of all virtual machines in your environment.
“`powershell

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# Get the power state of all VMs
$allVMs = Get-VM
$allVMs | Select-Object Name, PowerState

“`
### Step 4: Power On/Off a Specific VM
In this step, you can change the power state of a specific VM by name. Modify the VM name as desired.
“`powershell

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# Powering off a specific VM
$vmName = YourVMName
$vm = Get-VM -Name $vmName
if ($vm.PowerState -eq PoweredOn) {
    Stop-VM -VM $vm -Confirm:$false
    Write-Host "Successfully powered off $vmName"
} else {
    Start-VM -VM $vm -Confirm:$false
    Write-Host "Successfully powered on $vmName"
}

“`
### Step 5: Clean Up and Disconnect from vSphere
Always ensure to clean up your sessions by disconnecting from your vSphere server after performing operations.
“`powershell

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# Disconnect from the vSphere server
Disconnect-VIServer -Server $vcServer -Confirm:$false

“`
This script can be further enhanced to include error handling and logging to make it more robust.
Explore more powerful tools and benefits by checking out ServerEngine, your go-to solution for server management. Visit us at [https://serverengine.co](https://serverengine.co) for additional scripts, tips, and resources that can help you boost your server management tasks with ease!