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Manual Chapter: Understanding vCMP Hosts
Manual Chapter
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Overview: Managing vCMP hosts

With vCMP initial setup successfully completed to process application traffic, you will likely want to manage the configuration of the vCMP host to optimize performance.

The vCMP host is the system-wide hypervisor that makes it possible for you to create, view, and manage all guests on the system. A vCMP host allocates system resources to guests as needed.

vCMP host configuration encompasses these activities:

  • Viewing host properties
  • Creating additional VLANs for guests if needed
  • Adding additional vCMP guests
  • Managing application volumes
Note: To manage a vCMP system, you must have the Administrator user role assigned to your user account.
Important: Do not configure BIG-IP module features (such as BIG-IP Local Traffic Manager™ virtual servers, pools, and profiles) when logged in to the vCMP host. Use the vCMP host to create and manage vCMP guests and to perform Layer 2 network configuration only. Attempting to configure BIG-IP modules while logged in to the vCMP host produces unwanted results. Always log in to the relevant vCMP guest to configure the features of a BIG-IP module.

Viewing host properties for slots

You must have created at least one vCMP guest on the system to view host properties.

Use the BIG-IP Configuration utility to view the host properties for all slots on the system or for a single slot. The host properties that you can view are:

  • The state of each guest
  • The slot numbers on which each guest runs
  • The number of CPU cores allocated to each guest
  1. Use a browser to log in to the VIPRION chassis's management IP address. This logs you in to the floating IP address for the cluster.
  2. On the Main tab, click vCMP > Host Properties.
  3. View host properties for all slots, or in the upper right corner of the screen, from the View list, select a slot number.
The screen displays the host properties for the chosen slots.

vCMP host properties

This topic describes the vCMP host properties on the BIG-IP system.

Property Name Value Description
State Configured, Provisioned, or Deployed The state of the named guest.
On Slots One or more numeric values in the range of 1 through 4. The slot numbers pertaining to each guest.
Number of Cores A numeric value The number of CPU cores currently allocated to the named guest.

About disk management for vCMP application volumes

You can view a vCMP application volume on the system, control the amount of physical disk space that the BIG-IP system allocates to a vCMP volume, or delete a vCMP volume. The BIG-IP system creates a vCMP application volume when you initially provision the vCMP feature.

You control the amount of disk space that the BIG-IP system allocates to a vCMP application volume by using the Disk Management screens of the BIG-IP Configuration utility. The Disk Management screens allow you to reserve an amount of disk space for other uses, so that the system does not allocate all available disk resources to the vCMP application volume.

Important: When you provision the vCMP feature, the BIG-IP system allocates most, but not all, of the disk space to the vCMP application volume. The system reserves approximately 30 GB of disk space for other uses. If you want the system to reserve more than 30 GB of disk space (such as for installing another version of the BIG-IP system in the future), do this before you provision the vCMP feature. Doing so after you have provisioned the vCMP feature produces unwanted results. When increasing the reserve space on the disk, the recommended amount of space to reserve is 8 GB per BIG-IP installation.
Note: If the disk space for the host approaches the maximum threshold, the vCMP system displays a warning message about depleted disk space.

Viewing disk space allocation for a vCMP application volume

You can use this procedure to view the amount of disk space, in megabytes, that the system has allocated to a vCMP application volume.
  1. Use a browser and the cluster management IP address of the vCMP host to log in to the vCMP host (hypervisor) and access the BIG-IP Configuration utility.
  2. On the Main tab, click System > Disk Management. The display shows the logical disks and application volumes from the perspective of the primary slot of the BIG-IP system cluster.
  3. Click the logical disk for which you want to reserve disk space. An example of a logical disk is HD1.
  4. On the menu bar, click Image List if displayed. The screen displays a list of the installed images on the system.
  5. If a list of images appears, locate the relevant image, and in the Disk column, click the logical disk name.
  6. In the Contained Application Volumes area of the screen, in the Volume column, locate the vCMP application volume.
  7. In the Size (MB) column, view the size of the application volume, in megabytes.

Deleting vCMP application volumes

Sometimes, you might need to de-provision the vCMP feature to perform certain disk management tasks. For example, you might want to increase the amount of disk space that the BIG-IP system reserves for non-vCMP uses such as an additional installation location. In this case, you must first de-provision the vCMP feature, and then explicitly delete the vCMP application volume from the system, before increasing the reserve amount. Once you have increased the reserve amount, you can re-provision the vCMP feature, thereby creating a new vCMP application volume.

  1. Use a browser and the cluster management IP address of the vCMP host to log in to the vCMP host (hypervisor) and access the BIG-IP Configuration utility.
  2. On the Main tab, click System > Disk Management. The display shows the logical disks and application volumes from the perspective of the primary slot of the BIG-IP system cluster.
  3. Click the logical disk for which you want to reserve disk space. An example of a logical disk is HD1.
  4. On the menu bar, click Image List if displayed. The screen displays a list of the installed images on the system.
  5. If a list of images appears, locate the relevant image, and in the Disk column, click the logical disk name.
  6. In the Contained Application Volumes area of the screen, in the Volume column, locate the vCMP application volume.
  7. To the left of the application volume name, check the box.
  8. Click Delete.
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