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This package enables the virtual machine to report its host name to the oVirt Engine, which enables the Red Hat Satellite server to identify the virtual machine as a content host and report the applicable errata. The Katello agent is deprecated and will be removed in a future Satellite version. Migrate your processes to use the remote execution feature to update clients remotely.
Setting up Satellite errata viewing for a host in the Administration Guide. You can configure a headless virtual machine when it is not necessary to access the machine via a graphical console. This headless machine will run without graphical and video devices. This can be useful in situations where the host has limited resources, or to comply with virtual machine usage requirements such as real-time virtual machines.
Headless virtual machines can be administered via a Serial Console, SSH, or any other service for command line access. Headless mode is applied via the Console tab when creating or editing virtual machines and machine pools, and when editing templates. It is also available when creating or editing instance types. If you are creating a new headless virtual machine, you can use the Run Once window to access the virtual machine via a graphical console for the first run only.
To set console mode, comment out the spashimage flag in the GRUB menu configuration file:. Restart the virtual machine if it is running when selecting the Headless Mode option. Select Headless Mode. All other fields in the Graphical Console section are disabled. Optionally, select Enable VirtIO serial console to enable communicating with the virtual machine via serial console. This is highly recommended.
Reboot the virtual machine if it is running. See Rebooting a Virtual Machine. You can configure a virtual machine for high performance, so that it runs with performance metrics as close to bare metal as possible. When you choose high performance optimization, the virtual machine is configured with a set of automatic, and recommended manual, settings for maximum efficiency. The high performance option is only accessible in the Administration Portal, by selecting High Performance from the Optimized for dropdown list in the Edit or New virtual machine, template, or pool window.
This option is not available in the VM Portal. The high performance option is supported by oVirt 4. It is not available for earlier versions. If you change the optimization mode of a running virtual machine to high performance, some configuration changes require restarting the virtual machine.
To change the optimization mode of a new or existing virtual machine to high performance, you may need to make manual changes to the cluster and to the pinned host configuration first. A high performance virtual machine has certain limitations, because enhanced performance has a trade-off in decreased flexibility:.
High performance templates and pools are created and edited in the same way as virtual machines. If a high performance template or pool is used to create new virtual machines, those virtual machines inherits this property and its configurations. Certain settings, however, are not inherited and must be set manually:. Selecting this option automatically performs certain configuration changes to this virtual machine, which you can view by clicking different tabs. You can change them back to their original settings or override them.
If you change a setting, its latest value is saved. See Configuring the Recommended Manual Settings for details. Alternatively, click OK to ignore the recommendations. The result may be a drop in the level of performance. You can view the optimization type in the General tab of the details view of the virtual machine, pool, or template.
Certain configurations can override the high performance settings. For example, if you select an instance type for a virtual machine before selecting High Performance from the Optimized for drop-down menu and performing the manual configuration, the instance type configuration will not affect the high performance configuration.
If, however, you select the instance type after the high performance configurations, you should verify the final configuration in the different tabs to ensure that the high performance configurations have not been overridden by the instance type. The following table summarizes the automatic settings. The Applies to column indicates the relevant resources:. Highly Available is not automatically enabled. If you select it manually, high availability should be enabled for pinned hosts only.
Otherwise, a warning will appear in the engine log. The following icons indicate the states of a high performance virtual machine in the Compute Virtual Machines screen.
You can configure the recommended manual settings in either the New or the Edit windows. The following table summarizes the recommended manual settings. See Virtual Machine Resource Allocation settings explained for information about the syntax of this field. CPU-intensive workloads perform best when the host and virtual machine expect the same cache usage.
CPU pinning can only be set for virtual machines and pools, but not for templates. Therefore, you must set CPU pinning manually whenever you create a high performance virtual machine or pool, even if they are based on a high performance template. In the Host tab, select the Specific Host s radio button and select the host s from the list. The IO and emulator threads pinning topology.
NUMA pinning can only be set for virtual machines, not for pools or templates. You must set NUMA pinning manually when you create a high performance virtual machine based on a template.
Huge pages are pre-allocated when a virtual machine starts to run dynamic allocation is disabled by default. You should set the huge page size to the largest size supported by the pinned host. Requires a kernel command line in the Edit Host configuration in the Administraion Portal. See Custom kernel command line. Click Compute Clusters and select the cluster. It features mappings that are valid for Windows and non-Windows time zones.
Do not edit the actual timezone. For example, timezone. Add new time zones to that file. Be sure each key is a valid General time zone from the time zone database and the value is a valid Windows time zone:.
Changes to storage, operating system, or networking parameters can adversely affect the virtual machine. Ensure that you have the correct details before attempting to make any changes. Virtual machines can be edited while running, and some changes listed in the procedure below will be applied immediately. To apply all other changes, the virtual machine must be shut down and restarted.
External virtual machines marked with the prefix external cannot be edited through the oVirt Engine. Memory Size Edit this field to hot plug virtual memory.
See Hot Plugging Virtual Memory. See CPU hot plug. Some changes are applied immediately. All other changes are applied when you shut down and restart your virtual machine. Until then, the pending changes icon appears as a reminder to restart the virtual machine.
You can add multiple network interfaces to virtual machines. Doing so allows you to put your virtual machine on multiple logical networks. You can create an overlay network for your virtual machines, isolated from the hosts, by defining a logical network that is not attached to the physical interfaces of the host. For example, you can create a DMZ environment, in which the virtual machines communicate among themselves over the bridge created in the host.
The overlay network uses OVN, which must be installed as an external network provider. See the Administration Guide for more information. Select the Profile and the Type of network interface from the drop-down lists. The Profile and Type drop-down lists are populated in accordance with the profiles and network types available to the cluster and the network interface cards available to the virtual machine.
The new network interface is listed in the Network Interfaces tab in the details view of the virtual machine. The Link State is set to Up by default when the network interface card is defined on the virtual machine and connected to the network.
In order to change any network settings, you must edit the network interface. This procedure can be performed on virtual machines that are running, but some actions can be performed only on virtual machines that are not running. Change settings as required. See Adding a Network Interface. You can hot plug network interfaces.
Hot plugging means enabling and disabling devices while a virtual machine is running. Set the Card Status to Plugged to enable the network interface, or set it to Unplugged to disable the network interface. You can configure the ovirt-guest-agent on a virtual machine to ignore certain NICs. This prevents IP addresses associated with network interfaces created by certain software from appearing in reports.
You must specify the name and number of the network interface you want to ignore for example, eth0 , docker0. See Creating a template from an existing virtual machine for details. Image is the default type of disk. You can also add a Direct LUN disk. Image disk creation is managed entirely by the Engine. Direct LUN disks require externally prepared targets that already exist. Existing disks are either floating disks or shareable disks attached to virtual machines.
Use the drop-down lists and check boxes to configure the disk. See Add Virtual Disk dialogue entries for more details on the fields for all disk types. Floating disks can minimize the amount of time required to set up virtual machines.
Floating disks can be attached to a single virtual machine, or to multiple virtual machines if the disk is shareable. Each virtual machine that uses the shared disk can use a different disk interface type. Select one or more virtual disks from the list of available disks and select the required interface from the Interface drop-down.
No Quota resources are consumed by attaching virtual disks to, or detaching virtual disks from, virtual machines. You can extend the available size of a virtual disk while the virtual disk is attached to a virtual machine. Resizing a virtual disk does not resize the underlying partitions or file systems on that virtual disk. Use the fdisk utility to resize the partitions and file systems as required.
See How to Resize a Partition using fdisk for more information. When the resizing of the drive is complete, the status of the drive becomes OK. You can hot plug virtual disks. Hot plugging means enabling or disabling devices while a virtual machine is running. Click More Actions , then click Activate to enable the disk, or Deactivate to disable the disk.
Click More Actions , then click Deactivate. Optionally, select the Remove Permanently check box to completely remove the virtual disk from the environment. If you do not select this option - for example, because the disk is a shared disk - the virtual disk will remain in Storage Disks. If the disk was created as block storage, for example iSCSI, and the Wipe After Delete check box was selected when creating the disk, you can view the log file on the host to confirm that the data has been wiped after permanently removing the disk.
If the disk was created as block storage, for example iSCSI, and the Discard After Delete check box was selected on the storage domain before the disk was removed, a blkdiscard command is called on the logical volume when it is removed and the underlying storage is notified that the blocks are free. A blkdiscard is also called on the logical volume when a virtual disk is removed if the virtual disk is attached to at least one virtual machine with the Enable Discard check box selected.
Click Storage Domains. Select one or more disk images and click Import. This opens the Import Disk s window. You can import floating virtual disks from a storage domain.
Floating disks created outside of a oVirt environment are not registered with the Engine. Scan the storage domain to identify unregistered floating disks to be imported. You can hot plug virtual memory. Each time memory is hot plugged, it appears as a new memory device in the Vm Devices tab in the details view of the virtual machine, up to a maximum of 16 available slots.
If the hot plug fails for example, if there are no more available slots , the memory increase will be applied when the virtual machine is restarted. If you might need to later hot unplug the memory that you are now hot plugging, see Hot Unplugging Virtual Memory.
Increase the Memory Size by entering the total amount required. Memory can be added in multiples of MB. By default, the maximum memory allowed for the virtual machine is set to 4x the memory size specified. Though the value is changed in the user interface, the maximum value is not hot plugged, and you will see the pending changes icon. To avoid that, you can change the maximum memory back to the original value. This action opens the Pending Virtual Machine changes window, as some values such as maxMemorySizeMb and minAllocatedMem will not change until the virtual machine is restarted.
However, the hot plug action is triggered by the change to the Memory Size value, which can be applied immediately.
You can see the newly added memory device in the Vm Devices tab in the details view. You can hot unplug virtual memory. Hot unplugging disables devices while a virtual machine is running. The virtual machine must not have a memory balloon device enabled.
This feature is disabled by default. In virtual machines running up-to-date versions of Enterprise Linux or CoreOS, this rule is set by default. For more information, see Setting kernel command-line parameters in the RHEL 8 document Managing, monitoring and updating the kernel.
In the Hot Unplug column, click Hot Unplug beside the memory device to be removed. The Physical Memory Guaranteed value for the virtual machine is decremented automatically if necessary. You can hot plug vCPUs. See the table below for support details. Windows virtual machines must have the guest agents installed.
Virtual machines can be pinned to multiple hosts. Multi-host pinning allows a virtual machine to run on a specific subset of hosts within a cluster, instead of one specific host or all hosts in the cluster. The virtual machine cannot run on any other hosts in the cluster even if all of the specified hosts are unavailable.
Multi-host pinning can be used to limit virtual machines to hosts with, for example, the same physical hardware configuration. If a host fails, a highly available virtual machine is automatically restarted on one of the other hosts to which the virtual machine is pinned. Select the Specific Host s radio button under Start Running On and select two or more hosts from the list. Select Low , Medium , or High from the Priority drop-down list. When migration is triggered, a queue is created in which the high priority virtual machines are migrated first.
If a cluster is running low on resources, only the high priority virtual machines are migrated. You can view virtual machines pinned to a host even while the virtual machines are offline. Use the Pinned to Host list to see which virtual machines will be affected and which virtual machines will require a manual restart after the host becomes active again. Click Compute Hosts. Procedure from the list to eject the CD currently accessible to the virtual machine.
Smart cards are an external hardware security feature, most commonly seen in credit cards, but also used by many businesses as authentication tokens.
Smart cards can be used to protect oVirt virtual machines. Click the Console tab and select the Smartcard enabled check box. Connect to the running virtual machine by clicking the Console button. Smart card authentication is now passed from the client hardware to the virtual machine. If the Smart card hardware is not correctly installed, enabling the Smart card feature will result in the virtual machine failing to load properly.
Click the Console tab, and clear the Smartcard enabled check box. Smart cards may require certain libraries in order to access their certificates. These libraries must be visible to the NSS library, which spice-gtk uses to provide the smart card to the guest.
For instance, if you have only the 32b PKCS 11 library available, you must install the 32b build of virt-viewer in order for smart cards to work. Enterprise Linux provides support for Smart cards. Install the Smart card support group. If the Smart Card Support group is installed on a Enterprise Linux system, smart cards are redirected to the guest when Smart Cards are enabled. Enterprise Linux provides a system-wide registry of pkcs11 modules in the pkit , and these are accessible to all applications.
To register the third party PKCS 11 library in the pkit database, run the following command as root:. Libraries that provide PKCS 11 support must be obtained from third parties. When such libraries are obtained, register them by running the following command as a user with elevated privileges:. You can turn off a virtual machine using Shutdown or Power Off. Shutdown gracefully shuts down a virtual machine.
Power Off executes a hard shutdown. A graceful shutdown is usually preferable to a hard shutdown. If an exclamation point appears next to the virtual machine, a snapshot deletion process has failed, and you may not be able to restart the machine after shutting it down. Try to delete the snapshot again and ensure that the explanation mark disappears before shutting down the virtual machine.
See Deleting a snapshot for more information. Click Shutdown or right-click the virtual machine and select Shutdown from the pop-up menu. Optionally in the Administration Portal, enter a Reason for shutting down the virtual machine in the Shut down Virtual Machine s confirmation window. This allows you to provide an explanation for the shutdown, which will appear in the logs and when the virtual machine is powered on again.
The virtual machine shutdown Reason field will only appear if it has been enabled in the cluster settings. If the virtual machine gracefully shuts down, the Status of the virtual machine changes to Down. If the virtual machine does not gracefully shut down, click the down arrow next to Shutdown and then click Power Off to execute a hard shutdown, or right-click the virtual machine and select Power Off from the pop-up menu.
Suspending a virtual machine is equal to placing that virtual machine into Hibernate mode. Click Suspend or right-click the virtual machine and select Suspend from the pop-up menu. Several situations can occur where you need to reboot the virtual machine, such as after an update or configuration change.
If a guest operating system can not be loaded or has become unresponsive, you need to reset the virtual machine. Click Reboot or right-click the virtual machine and select Reboot from the pop-up menu. Click the down arrow next to Reboot , then click Reset , or right-click the virtual machine and select Reset from the pop-up menu.
During reboot and reset operations, the Status of the virtual machine changes to Reboot In Progress before returning to Up. The Remove button is disabled while virtual machines are running; you must shut down a virtual machine before you can remove it. Click Compute Virtual Machines and select the virtual machine to remove. Optionally, select the Remove Disk s check box to remove the virtual disks attached to the virtual machine together with the virtual machine.
If the Remove Disk s check box is cleared, then the virtual disks remain in the environment as floating disks. The Clone VM button is disabled while virtual machines are running; you must shut down a virtual machine before you can clone it. Click Compute Virtual Machines and select the virtual machine to clone. The guest tools are distributed as an ISO file that you can attach to virtual machines. Update the guest agents and drivers on your Enterprise Linux virtual machines to use the latest version.
When you need to update the drivers for a Windows virtual machine, the simplest method is to use Windows Update. Updating Windows guest agents and drivers using the command prompt.
During this procedure, you must remove and reinstall the drivers, which can lead to network disruption. This procedure restores your settings after reinstalling the drivers. If you are updating the drivers, on the Windows virtual machine, use the netsh utility to save TCP settings before uninstalling the netkvm driver:.
Upload the ISO file to a data domain. To install the guest agents and drivers, or just the drivers, use virtio-win-gt-x Errata for each virtual machine can be viewed after the oVirt virtual machine has been configured to receive errata information from the Red Hat Satellite server.
For more information on configuring a virtual machine to display available errata see Configuring Satellite Errata. As the SuperUser , the system administrator manages all aspects of the Administration Portal.
More specific administrative roles can be assigned to other users. These restricted administrator roles are useful for granting a user administrative privileges that limit them to a specific resource.
For example, a DataCenterAdmin role has administrator privileges only for the assigned data center with the exception of the storage for that data center, and a ClusterAdmin has administrator privileges only for the assigned cluster. A UserVmManager is a system administration role for virtual machines in a data center. This role can be applied to specific virtual machines, to a data center, or to the whole virtualized environment; this is useful to allow different users to manage certain virtual resources.
Many end users are concerned solely with the virtual machine resources of the virtualized environment. As a result, oVirt provides several user roles which enable the user to manage virtual machines specifically, but not other resources in the data center.
The table below describes the administrator roles and privileges applicable to virtual machine administration. Possesses administrative permissions for all objects underneath a specific data center except for storage. Possesses administrative permissions for all objects underneath a specific cluster.
Possesses administrative permissions for all operations on a specific logical network. Can configure and manage networks attached to virtual machines. To configure port mirroring on a virtual machine network, apply the NetworkAdmin role on the network and the UserVmManager role on the virtual machine. The table below describes the user roles and privileges applicable to virtual machine users. These roles allow access to the VM Portal for managing and accessing virtual machines, but they do not confer any permissions for the Administration Portal.
Apply this role to a user for the whole environment with the Configure window, or for specific data centers or clusters. For example, if a PowerUserRole is applied on a data center level, the PowerUser can create virtual machines and templates in the data center. Can manage virtual machines and create and use snapshots. A user who creates a virtual machine in the VM Portal is automatically assigned the UserVmManager role on the machine. This role is not applied to a specific virtual machine; apply this role to a user for the whole environment with the Configure window.
When applying this role to a cluster, you must also apply the DiskCreator role on an entire data center, or on specific storage domains. If the Allow all users to use this Network option was selected when a logical network is created, VnicProfileUser permissions are assigned to all users for the logical network. Users can then attach or detach virtual machine network interfaces to or from the logical network. If you are creating virtual machines for users other than yourself, you have to assign roles to the users before they can use the virtual machines.
Note that permissions can only be assigned to existing users. See Users and Roles in the Administration Guide for details on creating user accounts.
However, customized roles can be configured via the Administration Portal. The default roles are described below.
A User can connect to and use virtual machines. This role is suitable for desktop end users performing day-to-day tasks. A PowerUser can create virtual machines and view virtual resources. This role is suitable if you are an administrator or manager who needs to provide virtual resources for your employees.
A UserVmManager can edit and remove virtual machines, assign user permissions, use snapshots and use templates. It is suitable if you need to make configuration changes to your virtual environment.
When you create a virtual machine, you automatically inherit UserVmManager privileges. This enables you to make changes to the virtual machine and assign permissions to the users you manage, or users who are in your Identity Management IdM or RHDS group. Enter a name, or user name, or part thereof in the Search text box, and click Go. A list of possible matches display in the results list. If a user is assigned permissions to only one virtual machine, single sign-on SSO can be configured for the virtual machine.
With single sign-on enabled, when a user logs in to the VM Portal, and then connects to a virtual machine through, for example, a SPICE console, users are automatically logged in to the virtual machine and do not need to type in the user name and password again. Single sign-on can be enabled or disabled on a per virtual machine basis. See Configuring Single Sign-On for Virtual Machines for more information on how to enable and disable single sign-on for virtual machines.
Click Remove. A warning message displays, asking you to confirm removal of the selected permissions. Take a snapshot of a virtual machine before you make a change to it that may have unintended consequences.
You can use a snapshot to return a virtual machine to a previous state. If no disks are selected, a partial snapshot of the virtual machine, without a disk, is created. You can preview this snapshot to view the configuration of the virtual machine. Note that committing a partial snapshot will result in a virtual machine without a disk.
The snapshot is created with a status of Locked , which changes to Ok. When you click the snapshot, its details are shown on the General , Disks , Network Interfaces , and Installed Applications drop-down views in the Snapshots tab. Click the Preview drop-down menu button and select Custom. This allows you to create and restore from a customized snapshot using the configuration and disk s from multiple snapshots. The status of the snapshot changes to Preview Mode.
The status of the virtual machine briefly changes to Image Locked before returning to Down. Click Commit to permanently restore the virtual machine to the condition of the snapshot. Any subsequent snapshots are erased. Alternatively, click the Undo button to deactivate the snapshot and return the virtual machine to its previous state.
After a short time, the cloned virtual machine appears in the Virtual Machines tab in the navigation pane with a status of Image Locked. The virtual machine remains in this state until oVirt completes the creation of the virtual machine. A virtual machine with a preallocated 20 GB hard drive takes about fifteen minutes to create. Sparsely-allocated virtual disks take less time to create than do preallocated virtual disks.
If the deletion fails, fix the underlying problem for example, a failed host, an inaccessible storage device, or a temporary network issue and try again.
First, you select one of the cluster hosts and a device type. Then, you choose and attach one or more of the host devices on that host. When you change the Pinned Host setting, it removes the current host devices. When you finish attaching one or more host devices, you run the virtual machine to apply the changes. The virtual machine starts on the host that has the attached host devices. If the virtual machine cannot start on the specified host or access the host device, it cancels the start operation and produces an error message with information about the cause.
The nvdimm option is a technical preview feature. For more information, see nvdimm host devices. Click OK to attach these devices to the virtual machine and close the window. Click the Edit button. This opens the Edit Virtual Machine pane.
In most cases, select scsi-hd. While the virtual machine starts running, watch for Operation Canceled error messages. If you cannot add a host device to a virtual machine, or a virtual machine cannot start running with the attached host devices, it generates Operation Canceled error messages. For example:. You can fix the error by removing the host device from the virtual machine or correcting the issues the error message describes. Respond to a Cannot add Host devices because the VM is in Up status message by shutting down the virtual machine before adding a host device.
Pinning a Virtual Machine to Multiple Hosts. If you are removing all host devices directly attached to the virtual machine in order to add devices from a different host, you can instead add the devices from the desired host, which will automatically remove all of the devices already attached to the virtual machine.
Click the Host Devices tab to list the host devices attached to the virtual machine. Select the host device to detach from the virtual machine, or hold Ctrl to select multiple devices, and click Remove device. This opens the Remove Host Device s window. You can use the Host Devices tab in the details view of a virtual machine to pin it to a specific host. If the virtual machine has any host devices attached to it, pinning it to another host automatically removes the host devices from the virtual machine.
Click Pin to another host. This opens the Pin VM to Host window. Technology Preview features are not supported with Red Hat production service-level agreements SLAs and might not be functionally complete, and Red Hat does not recommend using them for production.
These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process.
Precise sizing is also needed to make memory hotplug work. If those internal arrangements change, it can cause data loss. This combination is currently not expected to be stable until further work is completed.
Affinity groups help you determine where selected virtual machines run in relation to each other and specified hosts. This capability helps manage workload scenarios such as licensing requirements, high-availability workloads, and disaster recovery.
When you create an affinity group, you select the virtual machines that belong to the group. To define where these virtual machines can run in relation to each other , you enable a VM Affinity Rule : A positive rule tries to run the virtual machines together on a single host; a negative affinity rule tries to run the virtual machines apart on separate hosts.
If the rule cannot be fulfilled, the outcome depends on whether the weight or filter module is enabled. Optionally, you can add hosts to the affinity group. To define where virtual machines in the group can run in relation to hosts in the group , you enable a Host Affinity Rule : A positive rule tries to run the virtual machines on hosts in the affinity group; a negative affinity rule tries to run the virtual machines on hosts that are not in the affinity group.
With the weight module, the scheduler attempts to fulfill a rule, but allows the virtual machines in the affinity group to run anyway if the rule cannot be fulfilled. However, if a single host does not have sufficient resources for this, the scheduler runs the virtual machines on multiple hosts.
The filter module overrides the weight module. With the filter module enabled, the scheduler requires that a rule be fulfilled. If a rule cannot be fulfilled, the filter module prevents the virtual machines in the affinity group from running. However, if those hosts are down, the scheduler does not run the virtual machines at all.
To see how these rules and options can be used with one another, see Affinity group examples. An affinity label is functionally the same as an affinity group with a positive Host Affinity Rule and Enforcing enabled. For affinity labels to work, the filter module section of the scheduling policies must contain Label. If an affinity group and affinity label conflict with each other, the affected virtual machines do not run.
To help prevent, troubleshoot, and resolve conflicts, see Affinity group troubleshooting. For more information, see Scheduling Policies in the Administration Guide.
Affinity groups apply to virtual machines in a cluster. Moving a virtual machine from one cluster to another removes it from the affinity groups in the original cluster. From the VM Affinity Rule drop-down, select Positive to apply positive affinity or Negative to apply negative affinity.
Select Disable to disable the affinity rule. Select the Enforcing check box to apply hard enforcement, or ensure this check box is cleared to apply soft enforcement. Use the drop-down list to select the virtual machines to be added to the affinity group. The affinity policy that applied to the virtual machines that were members of that affinity group no longer applies.
The following examples illustrate how to apply affinity rules for various scenarios, using the different features of the affinity group capability described in this chapter. Dalia is the DevOps engineer for a startup. Adds the two virtual machines, VM01 and VM02 , to the affinity group.
Sets VM Affinity to Negative so the virtual machines try to run on separate hosts. Leaves Enforcing cleared disabled so that both virtual machines can continue running in case only one host is available during an outage. Leaves the Hosts list empty so the virtual machines run on any host in the cluster. Sohni is a software developer who uses two virtual machines to build and test his software many times each day.
There is heavy network traffic between these two virtual machines. Running the machines on the same host reduces both network traffic and the effects of network latency on the build and test process. Adds VM01 and VM02 , the build and test virtual machines, to the affinity group. Adds the high-specification hosts, host03 , host04 , and host05 , to the affinity group. Sets VM affinity to Positive so the virtual machines try to run on the same host, reducing network traffic and latency effects.
Sets Host affinity to Positive so the virtual machines try to run on the high specification hosts, accelerating the process. Leaves Enforcing cleared disabled for both rules so the virtual machines can run if the high-specification hosts are not available.
Bandile, a software asset manager, helps his organization comply with the restrictive licensing requirements of a 3D imaging software vendor. Additionally, the physical CPU-based licensing model requires that the workstations run on either of two GPU-equipped hosts, host-gpu-primary or host-gpu-backup. To meet these requirements, Bandile creates an affinity group called "3D seismic imaging" and does the following:.
Sets VM affinity to Positive and selects Enforcing so the licensing server and workstations must run together on one of the hosts, not on multiple hosts.
Sets Host affinity to Positive and selects Enforcing so the virtual machines must run on either of the GPU-equipped the hosts, not other hosts in the cluster. Understand that an affinity label is the equivalent of an affinity group with a Host affinity rule that is Positive and has Enforcing enabled. Understand that if an affinity label and affinity group conflict with each other, the intersecting set of virtual machines do not run.
Otherwise, a conflict is not possible. Inspect the affinity groups. They must contain a rule that has Enforcing enabled. Inspect the affinity labels and groups. Make a list of virtual machines that are members of both an affinity label and an affinity group with an Enforcing option enabled. For each host and virtual machine in this intersecting set, analyze the conditions under which a potential conflict occurs.
If you have overlapping affinity groups and affinity labels, it can be easier to view them in one place as affinity groups. Consider converting an affinity label into an equivalent affinity group, which has a Host affinity rule with Positive selected and Enforcing enabled.
Affinity labels are used to set hard Enforced positive affinity between virtual machines and hosts. See the Affinity Groups section for more information about affinity hardness and polarity. Labels function identically to a hard positive affinity group, but simplify configuration in certain use cases. For example, if you have virtual machines that require specific host hardware, you can use affinity labels to ensure that those virtual machines run on the required hosts.
If you use software that is license-limited to a certain number of physical machines, you can use affinity labels to ensure that virtual machines running that software are limited to the required physical hosts. Affinity labels are a subset of affinity groups and can conflict with them. If there is a conflict, the virtual machine will not start. You can create affinity labels from the details view of a virtual machine, host, or cluster.
This procedure uses the cluster details view. Click Compute Clusters and select the appropriate cluster. Use the drop-down lists to select the virtual machines and hosts to be associated with the label.
You can edit affinity labels from the details view of a virtual machine, host, or cluster. The export storage domain is deprecated.
Storage data domains can be unattached from a data center and imported to another data center in the same environment, or in a different environment. Virtual machines, floating virtual disks, and templates can then be uploaded from the imported storage domain to the attached data center. You can export virtual machines and templates from, and import them to, data centers in the same or different Red Hat Virtualization environment. You can export or import virtual machines by using an export domain, a data domain, or by using a Red Hat Virtualization host.
When you export or import a virtual machine or template, properties including basic details such as the name and description, resource allocation, and high availability settings of that virtual machine or template are preserved.
The permissions and user roles of virtual machines and templates are included in the OVF files, so that when a storage domain is detached from one data center and attached to another, the virtual machines and templates can be imported with their original permissions and user roles. In order for permissions to be registered successfully, the users and roles related to the permissions of the virtual machines or templates must exist in the data center before the registration process.
V2V converts virtual machines so that they can be hosted by oVirt. Export a virtual machine to the export domain so that it can be imported into a different data center. Before you begin, the export domain must be attached to the data center that contains the virtual machine to be exported.
Optionally, select the following check boxes in the Export Virtual Machine window:. Force Override : overrides existing images of the virtual machine on the export domain. Collapse Snapshots : creates a single export volume per disk. This option removes snapshot restore points and includes the template in a template-based virtual machine, and removes any dependencies a virtual machine has on a template.
For a virtual machine that is dependent on a template, either select this option, export the template with the virtual machine, or make sure the template exists in the destination data center. When you create a virtual machine from a template by clicking Compute Templates and clicking New VM , you wll see two storage allocation options in the Storage Allocation section in the Resource Allocation tab:. If Clone is selected, the virtual machine is not dependent on the template.
The template does not have to exist in the destination data center. If Thin is selected, the virtual machine is dependent on the template, so the template must exist in the destination data center or be exported with the virtual machine.
Alternatively, select the Collapse Snapshots check box to collapse the template disk and virtual disk into a single disk. The export of the virtual machine begins. The virtual machine displays in Compute Virtual Machines with an Image Locked status while it is exported. Depending on the size of your virtual machine hard disk images, and your storage hardware, this can take up to an hour.
Click the Events tab to view progress. You can export a virtual machine to a data domain to store a clone of the virtual machine as a backup. When you export a virtual machine that is dependent on a template, the target storage domain should include that template.
When you create a virtual machine from a template, you can choose from either of two storage allocation options:. Clone : The virtual machine is not dependent on the template. The template does not have to exist in the destination storage domain.
Thin : The virtual machine is dependent on the template, so the template must exist in the destination storage domain. Optional Check Collapse snapshots to export the virtual machine without any snapshots. When you move a disk from one type of data domain another, the disk format changes accordingly. For example, if the disk is on an NFS data domain, and it is in sparse format, then if you move the disk to an iSCSI domain its format changes to preallocated.
This is different from using an export domain, because an export domain is NFS. The virtual machine appears with an Image Locked status while it is exported. When complete, the virtual machine has been exported to the data domain and appears in the list of virtual machines. You have a virtual machine on an export domain. Before the virtual machine can be imported to a new data center, the export domain must be attached to the destination data center.
Click Storage Domains and select the export domain. The export domain must have a status of Active. Select the Collapse Snapshots check box to remove snapshot restore points and include templates in template-based virtual machines. Click the virtual machine to be imported and click the Disks sub-tab. From this tab, you can use the Allocation Policy and Storage Domain drop-down lists to select whether the disk used by the virtual machine will be thinly provisioned or preallocated, and can also select the storage domain on which the disk will be stored.
An icon is also displayed to indicate which of the disks to be imported acts as the boot disk for that virtual machine. The Import Virtual Machine Conflict window opens if the virtual machine exists in the virtualized environment. Import as cloned and enter a unique name for the virtual machine in the New Name field. Optionally select the Apply to all check box to import all duplicated virtual machines with the same suffix, and then enter a suffix in the Suffix to add to the cloned VMs field.
During a single import operation, you can only import virtual machines that share the same architecture. If any of the virtual machines to be imported have a different architecture to that of the other virtual machines to be imported, a warning will display and you will be prompted to change your selection so that only virtual machines with the same architecture will be imported.
If you are importing a virtual machine from an imported data storage domain, the imported storage domain must be attached to a data center and activated.
For each virtual machine in the Import Virtual Machine s window, ensure the correct target cluster is selected in the Cluster list. Map external virtual machine vNIC profiles to profiles that are present on the target cluster s :. If multiple target clusters are selected in the Import Virtual Machine s window, select each target cluster in the Target Cluster drop-down list and ensure the mappings are correct.
If a MAC address conflict is detected, an exclamation mark appears next to the name of the virtual machine. Mouse over the icon to view a tooltip displaying the type of error that occurred.
Alternatively, you can select the Reassign check box per virtual machine. If there are no available addresses to assign, the import operation will fail. The imported virtual machines no longer appear in the list under the VM Import tab. Import virtual machines from a VMware vCenter provider to your oVirt environment. You can import from a VMware provider by entering its details in the Import Virtual Machine s window during each import operation, or you can add the VMware provider as an external provider, and select the preconfigured provider during import operations.
The virt-v2v package is not available on the ppc64le architecture and these hosts cannot be used as proxy hosts. The virt-v2v package must be installed on at least one host, referred to in this procedure as the proxy host. Local storage is not supported. This image includes the guest tools that are required for migrating Windows virtual machines. The virtual machine must be shut down before being imported. Starting the virtual machine through VMware during the import process can result in data corruption.
An import operation can only include virtual machines that share the same architecture. If any virtual machine to be imported has a different architecture, a warning appears and you are prompted to change your selection to include only virtual machines with the same architecture. Click More Actions and select Import. This opens the Import Virtual Machine s window. If you have configured a VMware provider as an external provider, select it from the External Provider list.
Verify that the provider credentials are correct. If you did not specify a destination data center or proxy host when configuring the external provider, select those options now. If you have not configured a VMware provider, or want to import from a new VMware provider, provide the following details:.
Select from the list the Data Center in which the virtual machine will be available. Enter the IP address or fully qualified domain name of the host from which the virtual machines will be imported in the ESXi field. Enter the name of the data center and the cluster in which the specified ESXi host resides in the Data Center field. If not, clear the option. The user must have access to the VMware data center and ESXi host on which the virtual machines reside. Select a host in the chosen data center with virt-v2v installed to serve as the Proxy Host during virtual machine import operations.
This host must also be able to connect to the network of the VMware vCenter external provider. Click Load to list the virtual machines on the VMware provider that can be imported. Select one or more virtual machines from the Virtual Machines on Source list, and use the arrows to move them to the Virtual Machines to Import list. Click Next. If required, you can change the driver type to VirtIO manually after the import. To change the driver type after a virtual machine has been imported, see Editing network interfaces.
If the network device uses driver types other than e or rtl, the driver type is changed to VirtIO automatically during the import. The Attach VirtIO-drivers option allows the VirtIO drivers to be injected to the imported virtual machine files so that when the driver is changed to VirtIO, the device will be properly detected by the operating system. Select the Clone check box to change the virtual machine name and MAC addresses, and clone all disks, removing all snapshots.
If a virtual machine appears with a warning symbol beside its name or has a tick in the VM in System column, you must clone the virtual machine and change its name. Click each virtual machine to be imported and click the Disks sub-tab.
Use the Allocation Policy and Storage Domain lists to select whether the disk used by the virtual machine will be thinly provisioned or preallocated, and select the storage domain on which the disk will be stored.
If you selected the Clone check box, change the name of the virtual machine in the General sub-tab. Click Compute Clusters. You can export a virtual machine to a specific path or mounted NFS shared storage on a host in the oVirt data center.
Enter the absolute path to the export directory in the Directory field, including the trailing slash.
You can import the file from any oVirt Node in the data center. The import process uses virt-v2v. Only virtual machines running operating systems compatible with virt-v2v can be successfully imported. Ensure that it has sufficient space. Select the virtual machine from the Virtual Machines on Source list, and use the arrows to move it to the Virtual Machines to Import list.
Select the virtual machine, and on the General tab select the Operating System. Import virtual machines from Xen on Enterprise Linux 5 to your oVirt environment. The virt-v2v package must be installed on at least one host referred to in this procedure as the proxy host.
Enterprise Linux hosts must be Enterprise Linux 7. If the drivers are not installed, the virtual machine may not boot after import. If you are not using VirtIO drivers, review the configuration of the virutal machine before first boot to ensure that VirtIO devices are not being used.
Shut down the virtual machine. Starting the virtual machine through Xen during the import process can result in data corruption. Due to current limitations, Xen virtual machines with block devices do not appear in the Virtual Machines on Source list. They must be imported manually. The target storage domain must be a file-based domain. Due to current limitations, specifying a block-based domain causes the V2V operation to fail. If a virtual machine appears with a warning symbol beside its name, or has a tick in the VM in System column, select the Clone check box to clone the virtual machine.
Cloning a virtual machine changes its name and MAC addresses and clones all of its disks, removing all snapshots. Attach an export domain. Doesn't work this product key for microsoft office frontpage These product keys work for me!!
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