vCloud – VM Management

Resource Verification

Organization Administrators are able to monitor vDC resource consumption before making resource changes to a VM. Under the Administration tab, select “Virtual Datacenters” and switch to the “Monitor” tab. This will display the current level of allocated resources assigned to powered on VMs. More resources may be added by opening a ticket with GreenCloud support, or contacting a GreenCloud sales representative.

 

VM Resource Changes

The following changes require the VM to be shut down:

  • Modify CPU/Memory
  • Change Network Connection
  • Move to a different vApp or vDC
  • vApp Template creation

To make changes to a VM, right-click and select Properties, then select the Hardware tab at the top.

At the top of the Hardware tab, the CPU and Memory can be modified once the VM is powered down. To view the rest of the Hardware tab, scroll down.

Disks can be added and removed from the VM from the Hard Disks section. Disk sizes can also be changed here. Please note that disks can only be expanded. To remove space from a disk, you will need to create a new, smaller disk, copy the data to it, and delete the original large disk. For this reason, GreenCloud recommends having a dedicated boot disk with the OS and adding separate disks as opposed to expanding the boot disk and using partitions. Disk additions of more than 2TB require a VM shutdown.

A VM’s NIC can be modified from the NICs section. The Network dropdown shows the Org VDC network to which the NIC is currently connected. The IP mode (Manual, Pool, or DHCP) can be set, and the IP address can be viewed. The IP can also be set here if the IP mode is manual. Should the MAC address need to be modified, it can be refreshed here while the VM is powered off.

After making any changes, a running task will appear in the vCloud interface. Once the task is complete, the changes will have been applied and the VM can be powered on.

 

Guest OS Customization

Guest OS Customization is a VMware tool which forces changes to the VM’s network settings, host name, administrator password, and domain membership, and can run customization scripts. However, it is not recommended to run Guest OS Customization more than once. Guest Customization should be run once to change the SID on a new VM for licensing purposes, and to reset the initial administrator password, and should be disabled after this.

To change Guest OS Customization settings, right-click a powered off VM and select Properties, then go to the Guest OS Customization tab. See below for an example. The “Enable guest customization” and “Change SID” checkboxes should be checked on first startup, as well as the “Allow local administrator password”. Make sure to specify a strong password.

The VM will restart multiple times after applying Guest OS Customization. The process will take 10-15 minutes. Once the process is complete, shut the VM down and disable Guest OS Customization. Otherwise there is a risk that the hostname may accidentally change or the administrator password may randomly reset at a later date.

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