Manage Virtual Server Power Options

Virtual Server power options include the list of actions that you can run to change a VS power status. You can manage power options for a specific virtual server or power on/off multiple VSs that reside on the same compute resource. 

To manage power options for a specific virtual server:

  1. Go to your Control Panel's Virtual Servers menu.
  2. Click the label of the required virtual server.
  3. Click the Tools button on the VS's screen to expand the Tools menu.
  4. The Tools menu enables you to perform the following power actions on VSs (the exact list shown depends on the VS status): 

Reboot Virtual Server



To reboot a virtual server:

  1. Click the Reboot Virtual Server button.
  2. Click the OK button in the pop-up box to confirm the reboot. 


Reboot in Recovery



To reboot a virtual server in the recovery mode:

  1. Click the Reboot in Recovery button.
  2. Click the Yes button in the pop-up box to confirm the reboot in the recovery mode. 

For VSs with a password encryption enabled, the temporary login is "root" and password is "recovery".

For VSs with a password encryption disabled, the "rootpassword will be used to reboot the VS in recovery.

Windows virtual servers boot from the Linux-based recovery template in the recovery mode. You need to log in as admin via SSH or VNC console and mount a Windows system disk manually.

You cannot work with the "whole" disk (like mount -t ntfs-3g /dev/sdb1) while mounting and checking block devices inside the recovery image as Windows disk is split into partitions.

Suspend/Unsuspend Virtual Server



To suspend/unsuspend a virtual server: 

  1. Click the Suspend button to stop a VS, change its status to suspended and disable all the major actions on VS, unless unsuspended.

    The virtual server is suspended immediately after clicking the Suspend button without an additional confirmation.

  2. Click the Unsuspend button to activate the suspended VS and enable all the major actions. 


Shut Down Virtual Server 



To shut down a virtual server:

  1. Click the Shut Down Virtual Server button.
  2. In the pop-up box, select either the Shut Down VS option to terminate the VS gracefully or the Power Off VS option to terminate the VS forcefully.

  3. Click the Apply button to shut down the VS. 

Startup Virtual Server



To queue a start-up action for a VS that is currently powered-off, click the Startup Virtual Server button.

When you start up a VS, it might be implicitly cold migrated if the current compute resource does not have sufficient resources.

Startup on Recovery



To start a VS in the recovery mode:

  1. Click the Startup on Recovery button to start up a VS in the recovery mode. 
  2. In the pop-up box, click the Yes button to confirm the startup. 

For VSs with a password encryption enabled, the temporary login is "root" and password is "recovery".

For VSs with a password encryption disabled, the "rootpassword will be used to start up the VS.


Boot from ISO



You can boot virtual servers from your own ISOs or the ISOs that are uploaded and made publicly available by other users. If you boot a VS from an ISO with the RAM requirement larger than the VS's RAM, the transaction will fail. Make sure that you have the Any power action on own virtual servers and Allow own virtual servers to boot from ISO permissions enabled to have access to this feature.

To boot a VS from an ISO: 

  1. Click the Boot from ISO button. 
  2. Select the ISO image from which the VS will be booted. 
  3. Click the Boot button. 


  • Currently, OnApp supports only Linux ISOs.
  • If you boot a VS from an ISO with the RAM requirement larger than the VS's RAM, the transaction will fail.
  • As soon as you boot a VS from the installation ISO, OnApp may lose control of any components (backups, networks, disks). The migration option is not available for VSs booted from ISO. The only available actions will be to start and stop a VS. Be aware that all the contents of the disk may be also deleted.

Power On/Off Multiple Virtual Servers



To power on and power of virtual servers that are run on the same compute resource, follow the next steps: 

  1. In the Appliances section, expand the Compute Resources menu and click a label of a compute zone where a target compute resource runs.
  2. Click a label of a compute resource. On the screen that appears, you will see a list of all virtual servers hosted on the compute resource.
  3. Choose virtual servers that you want to power on or power off by selecting the required checkboxes in the first column of the table. 

    • To select all virtual servers residing on the compute resource, click the first checkbox. To cancel the selection of all virtual servers, click this checkbox again.

    • If you select all virtual servers, only the powered-off VSs will be powered on, while the already powered-on VSs will be skipped and vice versa.

Depending on the current power status of the selected VSs, one of the following options will become available. 

Power On

To power on the selected VSs: 

    • Click the Power On button.
    • In the pop-up box, click the YES button to confirm your action.


Power Off 

To power off the selected VSs: 

    • Click the Power Off button.
    • In the pop-up box, select one of the following methods: 
      • Gracefully shutdown - to run a graceful shutdown of VSs
      • Power Off - to run a forceful shutdown of VSs
    • Click the Submit button to confirm your action.
  • The bulk power on/off actions are available only to virtual servers that are run on KVM and Xen compute resources.
  • Make sure that you have the Any power action on own virtual servers and See all Compute resources permissions enabled to have access to this feature.