VIRT-INSTALLSection: Virtual Machine Install Tools (1)
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NAMEvirt-install - provision new virtual machines
DESCRIPTIONvirt-install is a command line tool for creating new KVM, Xen, or Linux container guests using the "libvirt" hypervisor management library. See the EXAMPLES section at the end of this document to quickly get started.
virt-install tool supports both text based & graphical installations, using VNC or SDL graphics, or a text serial console. The guest can be configured to use one or more virtual disks, network interfaces, audio devices, physical USB or PCI devices, among others.
The installation media can be held locally or remotely on NFS, HTTP, FTP servers. In the latter case "virt-install" will fetch the minimal files necessary to kick off the installation process, allowing the guest to fetch the rest of the OS distribution as needed. PXE booting, and importing an existing disk image (thus skipping the install phase) are also supported.
Given suitable command line arguments, "virt-install" is capable of running completely unattended, with the guest 'kickstarting' itself too. This allows for easy automation of guest installs. An interactive mode is also available with the --prompt option, but this will only ask for the minimum required options.
OPTIONSMost options are not required. Minimum requirements are --name, --ram, guest storage (--disk, --filesystem or --nodisks), and an install option.
- -h, --help
- Show the help message and exit
Connect to a non-default hypervisor. The default connection is chosen based
on the following rules:
- If running on a host with the Xen kernel (checks against /proc/xen)
- If running on a bare metal kernel as root (needed for KVM installs)
If running on a bare metal kernel as non-root
It is only necessary to provide the "--connect" argument if this default prioritization is incorrect, eg if wanting to use QEMU while on a Xen kernel.
General OptionsGeneral configuration parameters that apply to all types of guest installs.
- -n NAME, --name=NAME
- Name of the new guest virtual machine instance. This must be unique amongst all guests known to the hypervisor on the connection, including those not currently active. To re-define an existing guest, use the virsh(1) tool to shut it down ('virsh shutdown') & delete ('virsh undefine') it prior to running "virt-install".
- -r MEMORY, --ram=MEMORY
- Memory to allocate for guest instance in megabytes. If the hypervisor does not have enough free memory, it is usual for it to automatically take memory away from the host operating system to satisfy this allocation.
- Request a non-native CPU architecture for the guest virtual machine. If omitted, the host CPU architecture will be used in the guest.
- The machine type to emulate. This will typically not need to be specified for Xen or KVM, but is useful for choosing machine types of more exotic architectures.
- -u UUID, --uuid=UUID
- UUID for the guest; if none is given a random UUID will be generated. If you specify UUID, you should use a 32-digit hexadecimal number. UUID are intended to be unique across the entire data center, and indeed world. Bear this in mind if manually specifying a UUID
Number of virtual cpus to configure for the guest. If 'maxvcpus' is specified,
the guest will be able to hotplug up to MAX vcpus while the guest is running,
but will startup with VCPUS.
CPU topology can additionally be specified with sockets, cores, and threads. If values are omitted, the rest will be autofilled prefering sockets over cores over threads.
Set which physical cpus the guest can use. "CPUSET" is a comma separated list of numbers, which can also be specified in ranges or cpus to exclude. Example:
0,2,3,5 : Use processors 0,2,3 and 5 1-5,^3,8 : Use processors 1,2,4,5 and 8
If the value 'auto' is passed, virt-install attempts to automatically determine an optimal cpu pinning using NUMA data, if available.
Tune NUMA policy for the domain process. Example invocations
--numatune 1,2,3,4-7 --numatune \"1-3,5\",mode=preferred
Specifies the numa nodes to allocate memory from. This has the same syntax as "--cpuset" option. mode can be one of 'interleave', 'preferred', or 'strict' (the default). See 'man 8 numactl' for information about each mode.
The nodeset string must use escaped-quotes if specifying any other option.
- --cpu MODEL[,+feature][,-feature][,match=MATCH][,vendor=VENDOR]
Configure the CPU model and CPU features exposed to the guest. The only
required value is MODEL, which is a valid CPU model as listed in libvirt's
Specific CPU features can be specified in a number of ways: using one of libvirt's feature policy values force, require, optional, disable, or forbid, or with the shorthand '+feature' and '-feature', which equal 'force=feature' and 'disable=feature' respectively
- --cpu core2duo,+x2apic,disable=vmx
- Expose the core2duo CPU model, force enable x2apic, but do not expose vmx
- --cpu host
- Expose the host CPUs configuration to the guest. This enables the guest to take advantage of many of the host CPUs features (better performance), but may cause issues if migrating the guest to a host without an identical CPU.
- Human readable text description of the virtual machine. This will be stored in the guests XML configuration for access by other applications.
- --security type=TYPE[,label=LABEL]
- Configure domain security driver settings. Type can be either 'static' or 'dynamic'. 'static' configuration requires a security LABEL. Specifying LABEL without TYPE implies static configuration.
Installation Method options
- -c CDROM, --cdrom=CDROM
- File or device use as a virtual CD-ROM device for fully virtualized guests. It can be path to an ISO image, or to a CDROM device. It can also be a URL from which to fetch/access a minimal boot ISO image. The URLs take the same format as described for the "--location" argument. If a cdrom has been specified via the "--disk" option, and neither "--cdrom" nor any other install option is specified, the "--disk" cdrom is used as the install media.
- -l LOCATION, --location=LOCATION
Distribution tree installtion source. virt-install can recognize
certain distribution trees and fetches a bootable kernel/initrd pair to
launch the install.
With libvirt 0.9.4 or later, network URL installs work for remote connections. virt-install will download kernel/initrd to the local machine, and then upload the media to the remote host. This option requires the URL to be accessible by both the local and remote host.
The "LOCATION" can take one of the following forms:
- Path to a local directory containing an installable distribution image
- nfs:host:/path or nfs://host/path
- An NFS server location containing an installable distribution image
- An HTTP server location containing an installable distribution image
- An FTP server location containing an installable distribution image
Some distro specific url samples:
- Fedora/Red Hat Based
- Use the PXE boot protocol to load the initial ramdisk and kernel for starting the guest installation process.
- Skip the OS installation process, and build a guest around an existing disk image. The device used for booting is the first device specified via "--disk" or "--filesystem".
- Path to a binary that the container guest will init. If a root "--filesystem" is has been specified, virt-install will default to /sbin/init, otherwise will default to /bin/sh.
- Specify that the installation media is a live CD and thus the guest needs to be configured to boot off the CDROM device permanently. It may be desirable to also use the "--nodisks" flag in combination.
- -x EXTRA, --extra-args=EXTRA
- Additional kernel command line arguments to pass to the installer when performing a guest install from "--location". One common usage is specifying an anaconda kickstart file for automated installs, such as --extra-args ``ks=http://myserver/my.ks''
Add PATH to the root of the initrd fetched with "--location". This can be
used to run an automated install without requiring a network hosted kickstart
--initrd-inject=/path/to/my.ks --extra-args ``ks=file:/my.ks''
Optimize the guest configuration for a type of operating system (ex. 'linux',
'windows'). This will attempt to pick the most suitable ACPI & APIC settings,
optimally supported mouse drivers, virtio, and generally accommodate other
operating system quirks.
By default, virt-install will attempt to auto detect this value from the install media (currently only supported for URL installs). Autodetection can be disabled with the special value 'none'
See "--os-variant" for valid options.
Further optimize the guest configuration for a specific operating system
variant (ex. 'fedora8', 'winxp'). This parameter is optional, and does not
require an "--os-type" to be specified.
By default, virt-install will attempt to auto detect this value from the install media (currently only supported for URL installs). Autodetection can be disabled with the special value 'none'.
If the special value 'list' is passed, virt-install will print the full list of variant values and exit. The printed format is not a stable interface, DO NOT PARSE IT.
If the special value 'none' is passed, no os variant is recorded and OS autodetection is disabled.
Values for some recent OS options are:
- win7 : Microsoft Windows 7
- vista : Microsoft Windows Vista
- winxp64 : Microsoft Windows XP (x86_64)
- winxp : Microsoft Windows XP
- win2k8 : Microsoft Windows Server 2008
- win2k3 : Microsoft Windows Server 2003
- freebsd8 : FreeBSD 8.x
- generic : Generic
- debiansqueeze : Debian Squeeze
- debianlenny : Debian Lenny
- fedora16 : Fedora 16
- fedora15 : Fedora 15
- fedora14 : Fedora 14
- mes5.1 : Mandriva Enterprise Server 5.1 and later
- mandriva2010 : Mandriva Linux 2010 and later
- rhel6 : Red Hat Enterprise Linux 6
- rhel5.4 : Red Hat Enterprise Linux 5.4 or later
- rhel4 : Red Hat Enterprise Linux 4
- sles11 : Suse Linux Enterprise Server 11
- sles10 : Suse Linux Enterprise Server
- ubuntuoneiric : Ubuntu 11.10 (Oneiric Ocelot)
- ubuntunatty : Ubuntu 11.04 (Natty Narwhal)
- ubuntumaverick : Ubuntu 10.10 (Maverick Meerkat)
- ubuntulucid : Ubuntu 10.04 (Lucid Lynx)
- ubuntuhardy : Ubuntu 8.04 LTS (Hardy Heron)
Use '--os-variant list' to see the full OS list
Optionally specify the post-install VM boot configuration. This option allows
specifying a boot device order, permanently booting off kernel/initrd with
option kernel arguments, and enabling a BIOS boot menu (requires libvirt
0.8.3 or later)
--boot can be specified in addition to other install options (such as --location, --cdrom, etc.) or can be specified on it's own. In the latter case, behavior is similar to the --import install option: there is no 'install' phase, the guest is just created and launched as specified.
- --boot cdrom,fd,hd,network,menu=on
- Set the boot device priority as first cdrom, first floppy, first harddisk, network PXE boot. Additionally enable BIOS boot menu prompt.
- --boot kernel=KERNEL,initrd=INITRD,kernel_args=console=/dev/ttyS0
- Have guest permanently boot off a local kernel/initrd pair, with the specified kernel options.
Specifies media to use as storage for the guest, with various options. The
general format of a disk string is
To specify media, the command can either be:
or explicitly specify one of the following arguments:
A path to some storage media to use, existing or not. Existing media can be
a file or block device. If installing on a remote host, the existing media
must be shared as a libvirt storage volume.
Specifying a non-existent path implies attempting to create the new storage, and will require specifyng a 'size' value. If the base directory of the path is a libvirt storage pool on the host, the new storage will be created as a libvirt storage volume. For remote hosts, the base directory is required to be a storage pool if using this method.
- An existing libvirt storage pool name to create new storage on. Requires specifying a 'size' value.
- An existing libvirt storage volume to use. This is specified as 'poolname/volname'.
Other available options:
- Disk device type. Value can be 'cdrom', 'disk', or 'floppy'. Default is 'disk'. If a 'cdrom' is specified, and no install method is chosen, the cdrom is used as the install media.
- Disk bus type. Value can be 'ide', 'scsi', 'usb', 'virtio' or 'xen'. The default is hypervisor dependent since not all hypervisors support all bus types.
- Disk permissions. Value can be 'rw' (Read/Write), 'ro' (Readonly), or 'sh' (Shared Read/Write). Default is 'rw'
- size (in GB) to use if creating new storage
whether to skip fully allocating newly created storage. Value is 'true' or
'false'. Default is 'true' (do not fully allocate).
The initial time taken to fully-allocate the guest virtual disk (sparse=false) will be usually by balanced by faster install times inside the guest. Thus use of this option is recommended to ensure consistently high performance and to avoid I/O errors in the guest should the host filesystem fill up.
- The cache mode to be used. The host pagecache provides cache memory. The cache value can be 'none', 'writethrough', or 'writeback'. 'writethrough' provides read caching. 'writeback' provides read and write caching.
Image format to be used if creating managed storage. For file volumes, this
can be 'raw', 'qcow2', 'vmdk', etc. See format types in
<http://libvirt.org/storage.html> for possible values. This is often
mapped to the driver_type value as well.
With libvirt 0.8.3 and later, this option should be specified if reusing and existing disk image, since libvirt does not autodetect storage format as it is a potential security issue. For example, if reusing an existing qcow2 image, you will want to specify format=qcow2, otherwise the hypervisor may not be able to read your disk image.
- Driver name the hypervisor should use when accessing the specified storage. Typically does not need to be set by the user.
- Driver format/type the hypervisor should use when accessing the specified storage. Typically does not need to be set by the user.
- Disk IO backend. Can be either ``threads'' or ``native''.
- How guest should react if a write error is encountered. Can be one of ``stop'', ``none'', or ``enospace''
- Serial number of the emulated disk device. This is used in linux guests to set /dev/disk/by-id symlinks. An example serial number might be: WD-WMAP9A966149
See the examples section for some uses. This option deprecates "--file", "--file-size", and "--nonsparse".
Specifies a directory on the host to export to the guest. The most simple
Which will work for recent QEMU and linux guest OS or LXC containers. For QEMU, the target point is just a mounting hint in sysfs, so will not be automatically mounted.
The following explicit options can be specified:
- The type or the source directory. Valid values are 'mount' (the default) or 'template' for OpenVZ templates.
- The access mode for the source directory from the guest OS. Only used with QEMU and type=mount. Valid modes are 'passthrough' (the default), 'mapped', or 'squash'. See libvirt domain XML documentation for more info.
- The directory on the host to share.
- The mount location to use in the guest.
- Request a virtual machine without any local disk storage, typically used for running 'Live CD' images or installing to network storage (iSCSI or NFS root).
- -f DISKFILE, --file=DISKFILE
- This option is deprecated in favor of "--disk path=DISKFILE".
- -s DISKSIZE, --file-size=DISKSIZE
- This option is deprecated in favor of "--disk ...,size=DISKSIZE,..."
- This option is deprecated in favor of "--disk ...,sparse=false,..."
- -w NETWORK, --network=NETWORK,opt1=val1,opt2=val2
Connect the guest to the host network. The value for "NETWORK" can take
one of 3 formats:
- Connect to a bridge device in the host called "BRIDGE". Use this option if the host has static networking config & the guest requires full outbound and inbound connectivity to/from the LAN. Also use this if live migration will be used with this guest.
- Connect to a virtual network in the host called "NAME". Virtual networks can be listed, created, deleted using the "virsh" command line tool. In an unmodified install of "libvirt" there is usually a virtual network with a name of "default". Use a virtual network if the host has dynamic networking (eg NetworkManager), or using wireless. The guest will be NATed to the LAN by whichever connection is active.
- Connect to the LAN using SLIRP. Only use this if running a QEMU guest as an unprivileged user. This provides a very limited form of NAT.
If this option is omitted a single NIC will be created in the guest. If there is a bridge device in the host with a physical interface enslaved, that will be used for connectivity. Failing that, the virtual network called "default" will be used. This option can be specified multiple times to setup more than one NIC.
Other available options are:
- Network device model as seen by the guest. Value can be any nic model supported by the hypervisor, e.g.: 'e1000', 'rtl8139', 'virtio', ...
- Fixed MAC address for the guest; If this parameter is omitted, or the value "RANDOM" is specified a suitable address will be randomly generated. For Xen virtual machines it is required that the first 3 pairs in the MAC address be the sequence '00:16:3e', while for QEMU or KVM virtual machines it must be '52:54:00'.
- Request a virtual machine without any network interfaces.
- -b BRIDGE, --bridge=BRIDGE
- This parameter is deprecated in favour of "--network bridge=bridge_name".
- -m MAC, --mac=MAC
- This parameter is deprecated in favour of "--network NETWORK,mac=12:34..."
Graphics ConfigurationIf no graphics option is specified, "virt-install" will default to '--graphics vnc' if the DISPLAY environment variable is set, otherwise '--graphics none' is used.
- --graphics TYPE,opt1=arg1,opt2=arg2,...
Specifies the graphical display configuration. This does not configure any
virtual hardware, just how the guest's graphical display can be accessed.
Typically the user does not need to specify this option, virt-install will
try and choose a useful default, and launch a suitable connection.
General format of a graphical string is
The supported options are:
The display type. This is one of:
Setup a virtual console in the guest and export it as a VNC server in the host. Unless the "port" parameter is also provided, the VNC server will run on the first free port number at 5900 or above. The actual VNC display allocated can be obtained using the "vncdisplay" command to "virsh" (or virt-viewer(1) can be used which handles this detail for the use).
Setup a virtual console in the guest and display an SDL window in the host to render the output. If the SDL window is closed the guest may be unconditionally terminated.
Export the guest's console using the Spice protocol. Spice allows advanced features like audio and USB device streaming, as well as improved graphical performance.
Using spice graphic type will work as if those arguments were given:
--video qxl --channel spicevmc
No graphical console will be allocated for the guest. Fully virtualized guests (Xen FV or QEmu/KVM) will need to have a text console configured on the first serial port in the guest (this can be done via the --extra-args option). Xen PV will set this up automatically. The command 'virsh console NAME' can be used to connect to the serial device.
- Request a permanent, statically assigned port number for the guest console. This is used by 'vnc' and 'spice'
- Specify the spice tlsport.
- Address to listen on for VNC/Spice connections. Default is typically 127.0.0.1 (localhost only), but some hypervisors allow changing this globally (for example, the qemu driver default can be changed in /etc/libvirt/qemu.conf). Use 0.0.0.0 to allow access from other machines. This is use by 'vnc' and 'spice'
- Request that the virtual VNC console be configured to run with a specific keyboard layout. If the special value 'local' is specified, virt-install will attempt to configure to use the same keymap as the local system. A value of 'none' specifically defers to the hypervisor. Default behavior is hypervisor specific, but typically is the same as 'local'. This is used by 'vnc'
- Request a VNC password, required at connection time. Beware, this info may end up in virt-install log files, so don't use an important password. This is used by 'vnc' and 'spice'
Set an expiration date for password. After the date/time has passed,
all new graphical connections are denyed until a new password is set.
This is used by 'vnc' and 'spice'
The format for this value is YYYY-MM-DDTHH:MM:SS, for example 2011-04-01T14:30:15
- This option is deprecated in favor of "--graphics vnc,..."
- This option is deprecated in favor of "--graphics vnc,port=PORT,..."
- This option is deprecated in favor of "--graphics vnc,listen=LISTEN,..."
- -k KEYMAP, --keymap=KEYMAP
- This option is deprecated in favor of "--graphics vnc,keymap=KEYMAP,..."
- This option is deprecated in favor of "--graphics sdl,..."
- This option is deprecated in favor of "--graphics none"
- Don't automatically try to connect to the guest console. The default behaviour is to launch a VNC client to display the graphical console, or to run the "virsh" "console" command to display the text console. Use of this parameter will disable this behaviour.
Virtualization Type optionsOptions to override the default virtualization type choices.
- -v, --hvm
- Request the use of full virtualization, if both para & full virtualization are available on the host. This parameter may not be available if connecting to a Xen hypervisor on a machine without hardware virtualization support. This parameter is implied if connecting to a QEMU based hypervisor.
- -p, --paravirt
- This guest should be a paravirtualized guest. If the host supports both para & full virtualization, and neither this parameter nor the "--hvm" are specified, this will be assumed.
- This guest should be a container type guest. This option is only required if the hypervisor supports other guest types as well (so for example this option is the default behavior for LXC and OpenVZ, but is provided for completeness).
- The hypervisor to install on. Example choices are kvm, qemu, xen, or kqemu. Availabile options are listed via 'virsh capabilities' in the <domain> tags.
- Prefer KVM or KQEMU (in that order) if installing a QEMU guest. This behavior is now the default, and this option is deprecated. To install a plain QEMU guest, use '--virt-type qemu'
- Force disable APIC for the guest.
- Force disable ACPI for the guest.
Attach a physical host device to the guest. Some example values for HOSTDEV:
- --soundhw MODEL
Attach a virtual audio device to the guest. MODEL specifies the emulated
sound card model. Possible values are ich6, ac97, es1370, sb16, pcspk,
or default. 'default' will be AC97 if the hypervisor supports it,
otherwise it will be ES1370.
This deprecates the old boolean --sound model (which still works the same as a single '--soundhw default')
- --watchdog MODEL[,action=ACTION]
Attach a virtual hardware watchdog device to the guest. This requires a
daemon and device driver in the guest. The watchdog fires a signal when
the virtual machine appears to hung. ACTION specifies what libvirt will do
when the watchdog fires. Values are
MODEL is the emulated device model: either i6300esb (the default) or ib700. Some examples:
Use the recommended settings:
Use the i6300esb with the 'poweroff' action
Specifies a serial device to attach to the guest, with various options. The
general format of a serial string is
--serial and --parallel devices share all the same options, unless otherwise noted. Some of the types of character device redirection are:
- --serial pty
- Pseudo TTY. The allocated pty will be listed in the running guests XML description.
- --serial dev,path=HOSTPATH
- Host device. For serial devices, this could be /dev/ttyS0. For parallel devices, this could be /dev/parport0.
- --serial file,path=FILENAME
- Write output to FILENAME.
- --serial pipe,path=PIPEPATH
- Named pipe (see pipe(7))
- --serial tcp,host=HOST:PORT,mode=MODE,protocol=PROTOCOL
TCP net console. MODE is either 'bind' (wait for connections on HOST:PORT)
or 'connect' (send output to HOST:PORT), default is 'connect'. HOST defaults
to '127.0.0.1', but PORT is required. PROTOCOL can be either 'raw' or 'telnet'
(default 'raw'). If 'telnet', the port acts like a telnet server or client.
Connect to localhost, port 1234:
Wait for connections on any address, port 4567:
Wait for telnet connection on localhost, port 2222. The user could then connect interactively to this console via 'telnet localhost 2222':
- --serial udp,host=CONNECT_HOST:PORT,bind_host=BIND_HOST:BIND_PORT
UDP net console. HOST:PORT is the destination to send output to (default
HOST is '127.0.0.1', PORT is required). BIND_HOST:BIND_PORT is the optional
local address to bind to (default BIND_HOST is 127.0.0.1, but is only set if
BIND_PORT is specified). Some examples:
Send output to default syslog port (may need to edit /etc/rsyslog.conf accordingly):
Send output to remote host 192.168.10.20, port 4444 (this output can be read on the remote host using 'nc -u -l 4444'):
- --serial unix,path=UNIXPATH,mode=MODE
- Unix socket, see unix(7). MODE has similar behavior and defaults as --serial tcp,mode=MODE
Specifies a communication channel device to connect the guest and host
machine. This option uses the same options as --serial and --parallel
for specifying the host/source end of the channel. Extra 'target' options
are used to specify how the guest machine sees the channel.
Some of the types of character device redirection are:
- --channel SOURCE,target_type=guestfwd,target_address=HOST:PORT
- Communication channel using QEMU usermode networking stack. The guest can connect to the channel using the specified HOST:PORT combination.
- --channel SOURCE,target_type=virtio[,name=NAME]
- Communication channel using virtio serial (requires 2.6.34 or later host and guest). Each instance of a virtio --channel line is exposed in the guest as /dev/vport0p1, /dev/vport0p2, etc. NAME is optional metadata, and can be any string, such as org.linux-kvm.virtioport1. If specified, this will be exposed in the guest at /sys/class/virtio-ports/vport0p1/NAME
- --channel spicevmc,target_type=virtio[,name=NAME]
- Communication channel for QEMU spice agent, using virtio serial (requires 2.6.34 or later host and guest). NAME is optional metadata, and can be any string, such as the default com.redhat.spice.0 that specifies how the guest will see the channel.
Connect a text console between the guest and host. Certain guest and
hypervisor combinations can automatically set up a getty in the guest, so
an out of the box text login can be provided (target_type=xen for xen
paravirt guests, and possibly target_type=virtio in the future).
- --console pty,target_type=virtio
- Connect a virtio console to the guest, redirected to a PTY on the host. For supported guests, this exposes /dev/hvc0 in the guest. See http://fedoraproject.org/wiki/Features/VirtioSerial for more info. virtio console requires libvirt 0.8.3 or later.
- Specify what video device model will be attached to the guest. Valid values for VIDEO are hypervisor specific, but some options for recent kvm are cirrus, vga, qxl, or vmvga (vmware).
Configure a virtual smartcard device.
Mode is one of host, host-certificates, or passthrough. Additional options are:
An example invocation:
See "http://libvirt.org/formatdomain.html#elementsSmartcard" for complete details.
- Set the autostart flag for a domain. This causes the domain to be started on host boot up.
If the requested guest has no install phase (--import, --boot), print the
generated XML instead of defining the guest. By default this WILL do storage
creation (can be disabled with --dry-run).
If the guest has an install phase, you will need to use --print-step to specify exactly what XML output you want. This option implies --quiet.
- Acts similarly to --print-xml, except requires specifying which install step to print XML for. Possible values are 1, 2, 3, or all. Stage 1 is typically booting from the install media, and stage 2 is typically the final guest config booting off hardisk. Stage 3 is only relevant for windows installs, which by default have a second install stage. This option implies --quiet.
- Prevent the domain from automatically rebooting after the install has completed.
- Amount of time to wait (in minutes) for a VM to complete its install. Without this option, virt-install will wait for the console to close (not neccessarily indicating the guest has shutdown), or in the case of --noautoconsole, simply kick off the install and exit. Any negative value will make virt-install wait indefinitely, a value of 0 triggers the same results as noautoconsole. If the time limit is exceeded, virt-install simply exits, leaving the virtual machine in its current state.
- Prevent interactive prompts. If the intended prompt was a yes/no prompt, always say yes. For any other prompts, the application will exit.
- Proceed through the guest creation process, but do NOT create storage devices, change host device configuration, or actually teach libvirt about the guest. virt-install may still fetch install media, since this is required to properly detect the OS to install.
- Specifically enable prompting for required information. Default prompting is off (as of virtinst 0.400.0)
- Check that the number virtual cpus requested does not exceed physical CPUs and warn if they do.
- -q, --quiet
- Only print fatal error messages.
- -d, --debug
- Print debugging information to the terminal when running the install process. The debugging information is also stored in "$HOME/.virtinst/virt-install.log" even if this parameter is omitted.
EXAMPLESInstall a Fedora 13 KVM guest with virtio accelerated disk/network, creating a new 8GB storage file, installing from media in the hosts CDROM drive, auto launching a graphical VNC viewer
# virt-install \ --connect qemu:///system \ --virt-type kvm \ --name demo \ --ram 500 \ --disk path=/var/lib/libvirt/images/demo.img,size=8 \ --graphics vnc \ --cdrom /dev/cdrom \ --os-variant fedora13
Install a Fedora 9 plain QEMU guest, using LVM partition, virtual networking, booting from PXE, using VNC server/viewer
# virt-install \ --connect qemu:///system \ --name demo \ --ram 500 \ --disk path=/dev/HostVG/DemoVM \ --network network=default \ --virt-type qemu --graphics vnc \ --os-variant fedora9
Install a guest with a real partition, with the default QEMU hypervisor for a different architecture using SDL graphics, using a remote kernel and initrd pair:
# virt-install \ --connect qemu:///system \ --name demo \ --ram 500 \ --disk path=/dev/hdc \ --network bridge=eth1 \ --arch ppc64 \ --graphics sdl \ --location http://download.fedora.redhat.com/pub/fedora/linux/core/6/x86_64/os/
Run a Live CD image under Xen fullyvirt, in diskless environment
# virt-install \ --hvm \ --name demo \ --ram 500 \ --nodisks \ --livecd \ --graphics vnc \ --cdrom /root/fedora7live.iso
Run /usr/bin/httpd in a linux container guest (LXC). Resource usage is capped at 512 MB of ram and 2 host cpus:
# virt-install \ --connect lxc:/// \ --name httpd_guest \ --ram 512 \ --vcpus 2 \ --init /usr/bin/httpd
Install a paravirtualized Xen guest, 500 MB of RAM, a 5 GB of disk, and Fedora Core 6 from a web server, in text-only mode, with old style --file options:
# virt-install \ --paravirt \ --name demo \ --ram 500 \ --file /var/lib/xen/images/demo.img \ --file-size 6 \ --graphics none \ --location http://download.fedora.redhat.com/pub/fedora/linux/core/6/x86_64/os/
Create a guest from an existing disk image 'mydisk.img' using defaults for the rest of the options.
# virt-install \ --name demo --ram 512 --disk /home/user/VMs/mydisk.img --import
Test a custom kernel/initrd using an existing disk image, manually specifying a serial device hooked to a PTY on the host machine.
# virt-install \ --name mykernel --ram 512 --disk /home/user/VMs/mydisk.img --boot kernel=/tmp/mykernel,initrd=/tmp/myinitrd,kernel_args="console=ttyS0" --serial pty
AUTHORSWritten by Daniel P. Berrange, Hugh Brock, Jeremy Katz, Cole Robinson and a team of many other contributors. See the AUTHORS file in the source distribution for the complete list of credits.
BUGSPlease see http://virt-manager.org/page/BugReporting
COPYRIGHTCopyright (C) 2006-2011 Red Hat, Inc, and various contributors. This is free software. You may redistribute copies of it under the terms of the GNU General Public License "http://www.gnu.org/licenses/gpl.html". There is NO WARRANTY, to the extent permitted by law.
SEE ALSOvirsh(1), "virt-clone(1)", "virt-manager(1)", the project website "http://virt-manager.org"
- SEE ALSO
This document was created by man2html, using the manual pages.
Time: 05:29:12 GMT, December 24, 2015