To configure Hyper-V virtual machine restart automatically using Windows PowerShell

In the actual production environment of the enterprise, especially after the server virtualization is deployed, it is necessary to configure the virtual machine restart automatically, which can reduce the downtime even when the server is in trouble or the scheduled maintenance is complete and the virtual machine can be restarted automatically.

Today's article focuses on configuring virtual machines to automatically restart in a Hyper-V environment using PowerShell.

One, use Windows PowerShell to see that the virtual machine has not been configured to restart automatically

The system's built-in PowerShell allows you to see which auto-start is configured for your virtual machine. Instead of using the right mouse button VM to select Settings to view, use the following PowerShell command on the Hyper-V host and use the Get VM cmdlet to pipeline to the Selection object:

Get-vm–vmname * | Select-object vmname,automaticstartaction

By using the above command, we can not only view the VMS on which they are hosted, but also show whether they are configured to restart automatically

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Ability to discover two virtual machines on the current host and not configured to restart automatically

Second, configure the virtual machine automatic restart

In Hyper-V, Microsoft offers three ways to start a VM self-booting, namely:

1) None-do not perform any action

2) Auto-start (if it is still running when the service is stopped)

3) always automatically restarts the secondary virtual machine

When you choose to start automatically, you can also choose whether to configure for delayed start.

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Use the following command to configure a virtual machine to start automatically

Get-vm–vmname bj-vmm-01 | Set-vm–automaticstartaction Start

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If you want to set up all virtual machines on the Hyper-V server to restart automatically, use the following command

Get-vm–vmname * | Set-vm–automaticstartaction Start

Third, configure the virtual machine automatic restart (delay)

If a critical business is running on a Hyper-V server, such as a DC server, a SQL Server, and a System Center server, the services of the SCCM server cannot be started because of the corresponding dependent environment and the SQL database service is not started, so You can configure automatic restart of SQL data, configure the SCCM server to delay startup, and set a delay time (such as 120S)

Get-vm–vmname bj-srv-01 | Set-vm–automaticstartdelay 120

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Use the following command to view the virtual machines that have been configured for delayed startup

Get-vm–vmname * | Select-object Vmname,automaticstartaction,automaticstartdelay

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Iv. Configure automatic restart of VMS on multiple Hyper-V hosts

In large data centers where a large number of Hyper-V hosts are deployed, it is unrealistic to log on to each host to be configured for automatic restarts, and it is a requirement to enable the automatic restart of virtual machines on multiple Hyper-V hosts.

Get-vm–computername Sysvh-33-202,sysvh-98-250–vmname * | Select-object Vmname,automaticstartaction,automaticstartdelay

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If you have many Hyper-V hosts that need to be configured for virtual machine self-booting, then the following is also a configuration method

$hosts = @{computername = "sysvh-33-201", "SYSVH-33-202GET-VM @hosts –vmname * | Set-vm–automaticstartaction startget-vm @hosts –vmname * | Select-object Vmname,automaticstartaction,automaticstartdelay "}

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To configure Hyper-V virtual machine restart automatically using Windows PowerShell