KVM命令参数
# virt-install --help
usage: virt-install --name NAME --memory MB STORAGE INSTALL [options]
从指定安装源创建新虚拟机。
optional arguments:
-h, --help show this help message and exit
--version show program's version number and exit
--connect URI 通过 libvirt URI 连接到虚拟机管理程序
通用选项:
-n NAME, --name NAME 客户机实例名称
--memory MEMORY Configure guest memory allocation. Ex:
--memory 1024 (in MiB)
--memory 512,maxmemory=1024
--memory 512,maxmemory=1024,hotplugmemorymax=2048,hotplugmemoryslots=2
--vcpus VCPUS Number of vcpus to configure for your guest. Ex:
--vcpus 5
--vcpus 5,maxvcpus=10,cpuset=1-4,6,8
--vcpus sockets=2,cores=4,threads=2
--cpu CPU CPU model and features. Ex:
--cpu coreduo,+x2apic
--cpu host-passthrough
--cpu host
--metadata METADATA 配置客户机元数据。例如：
--metadata name=foo,title="My pretty title",uuid=...
--metadata description="My nice long description"
安装方法选项:
--cdrom CDROM 光驱安装介质
-l LOCATION, --location LOCATION
安装源 (例如：nfs:host:/path, http://host/path,
ftp://host/path)
--pxe 使用 PXE 协议从网络引导
--import 在已有的磁盘镜像中构建客户机
--livecd 将光驱介质视为 Live CD
-x EXTRA_ARGS, --extra-args EXTRA_ARGS
将附加参数添加到由 --location
引导的内核中
--initrd-inject INITRD_INJECT
添加指定文件到由 --location 指定的 initrd
根中
--os-variant DISTRO_VARIANT
在客户机上安装的操作系统，例如：'fedor
a18'、'rhel6'、'winxp' 等。
--boot BOOT 配置客户机引导设置。例如：
--boot hd,cdrom,menu=on
--boot init=/sbin/init (针对容器)
--idmap IDMAP 为 LXC 容器启用用户名称空间。例如：
--idmap uid_start=0,uid_target=1000,uid_count=10
设备选项:
--disk DISK 指定存储的各种选项。例如：
--disk size=10 (在默认位置创建 10GiB 镜像)
--disk /my/existing/disk,cache=none
--disk device=cdrom,bus=scsi
--disk=?
-w NETWORK, --network NETWORK
配置客户机网络接口。例如：
--network bridge=mybr0
--network network=my_libvirt_virtual_net
--network network=mynet,model=virtio,mac=00:11...
--network none
--network help
--graphics GRAPHICS 配置客户机显示设置。例如：
--graphics vnc
--graphics spice,port=5901,tlsport=5902
--graphics none
--graphics vnc,password=foobar,port=5910,keymap=ja
--controller CONTROLLER
配置客户机控制器设备。例如：
--controller type=usb,model=ich9-ehci1
--input INPUT 配置客户机输入设备。例如：
--input tablet
--input keyboard,bus=usb
--serial SERIAL 配置客户机串口设备
--parallel PARALLEL 配置客户机并口设备
--channel CHANNEL 配置客户机通信通道
--console CONSOLE 配置文本控制台连接主机与客户机
--hostdev HOSTDEV 配置物理 USB/PCI 等主机设备与客户机共享
--filesystem FILESYSTEM
传递主机目录到客户机。例如：
--filesystem /my/source/dir,/dir/in/guest
--filesystem template_name,/,type=template
--sound [SOUND] 配置客户机声音设备仿真
--watchdog WATCHDOG 配置客户机 watchdog 设备
--video VIDEO 配置客户机视频硬件。
--smartcard SMARTCARD
配置客户机智能卡设备。例如：
--smartcard mode=passthrough
--redirdev REDIRDEV 配置客户机重定向设备。例如：
--redirdev usb,type=tcp,server=192.168.1.1:4000
--memballoon MEMBALLOON
配置客户机 memballoon 设备。例如：
--memballoon model=virtio
--tpm TPM 配置客户机 TPM 设备。例如：
--tpm /dev/tpm
--rng RNG Configure a guest RNG device. Ex:
--rng /dev/urandom
--panic PANIC 配置客户机 panic 设备。例如：
--panic default
--memdev MEMDEV Configure a guest memory device. Ex:
--memdev dimm,target_size=1024
客户机配置选项:
--security SECURITY 设置域安全驱动配置。
--cputune CPUTUNE Tune CPU parameters for the domain process.
--numatune NUMATUNE 为域进程调整 NUMA 策略。
--memtune MEMTUNE 为域进程调整内存策略。
--blkiotune BLKIOTUNE
为域进程调整 blkio 策略。
--memorybacking MEMORYBACKING
为域进程设置内存后备策略。例如：
--memorybacking hugepages=on
--features FEATURES 设置域 <features> XML。例如：
--features acpi=off
--features apic=on,eoi=on
--clock CLOCK 设置域 <clock> XML。例如：
--clock offset=localtime,rtc_tickpolicy=catchup
--pm PM 配置 VM 电源管理功能
--events EVENTS 配置 VM 生命周期管理策略
--resource RESOURCE 配置 VM 资源分区(cgroups)
--sysinfo SYSINFO Configure SMBIOS System Information. Ex:
--sysinfo emulate
--sysinfo host
--sysinfo bios_vendor=Vendor_Inc.,bios_version=1.2.3-abc,...
--sysinfo system_manufacturer=System_Corp.,system_product=Computer,...
--sysinfo baseBoard_manufacturer=Baseboard_Corp.,baseBoard_product=Motherboard,...
--qemu-commandline QEMU_COMMANDLINE
Pass arguments directly to the qemu emulator. Ex:
--qemu-commandline='-display gtk,gl=on'
--qemu-commandline env=DISPLAY=:0.1
虚拟化平台选项:
-v, --hvm 这个客户机应该是一个全虚拟化客户机
-p, --paravirt 这个客户机应该是一个半虚拟化客户机
--container 这个客户机应该是一个容器客户机
--virt-type HV_TYPE 要使用的管理程序名称 (kvm, qemu, xen, ...)
--arch ARCH 模拟 CPU 架构
--machine MACHINE 机器类型为仿真类型
其它选项:
--autostart 主机启动时自动启动域。
--transient Create a transient domain.
--wait WAIT 请等待数分钟以便完成安装。
--noautoconsole 不要自动尝试连接到客户端控制台
--noreboot 安装完成后不启动客户机。
--print-xml [XMLONLY]
打印生成的 XML 域，而不是创建客户机。
--dry-run 运行安装程序，但不创建设备或定义客户
机。
--check CHECK 启用或禁用验证检查。例如：
--check path_in_use=off
--check all=off
-q, --quiet 抑制非错误输出
-d, --debug 输入故障排除信息
使用 '--option=?' 或 '--option help' 来查看可用的子选项
请参考 man 手册，以便了解示例和完整的选项语法。
VIRT-INSTALL(1) Virtual Machine Manager VIRT-INSTALL(1)
NAME
virt-install - provision new virtual machines
SYNOPSIS
virt-install [OPTION]...
DESCRIPTION
virt-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 graphical installations using (for example) VNC or SPICE, as
well as text mode installs over 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.
Many arguments have sub options, specified like opt1=foo,opt2=bar, etc. Try --option=?
to see a complete list of sub options associated with that argument, example: virt-
install --disk=?
Most options are not required. Minimum requirements are --name, --memory, guest storage
(--disk or --filesystem), and an install option.
Manual page virt-install(1) line 1 (press h for help or q to quit)...skipping...
VIRT-INSTALL(1) Virtual Machine Manager VIRT-INSTALL(1)
NAME
virt-install - provision new virtual machines
SYNOPSIS
virt-install [OPTION]...
DESCRIPTION
virt-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 graphical installations using (for example) VNC or SPICE, as
well as text mode installs over 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.
Many arguments have sub options, specified like opt1=foo,opt2=bar, etc. Try --option=?
to see a complete list of sub options associated with that argument, example: virt-
install --disk=?
Most options are not required. Minimum requirements are --name, --memory, guest storage
(--disk or --filesystem), and an install option.
CONNECTING TO LIBVIRT
--connect URI
Connect to a non-default hypervisor. If this isn't specified, libvirt will try and
choose the most suitable default.
Some valid options here are:
qemu:///system
For creating KVM and QEMU guests to be run by the system libvirtd instance.
This is the default mode that virt-manager uses, and what most KVM users want.
qemu:///session
For creating KVM and QEMU guests for libvirtd running as the regular user.
xen:///
For connecting to Xen.
lxc:///
For creating linux containers
GENERAL OPTIONS
General 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".
--memory OPTIONS
Memory to allocate for the guest, in MiB. This deprecates the -r/--ram option. Sub
options are available, like 'maxmemory', 'hugepages', 'hotplugmemorymax' and
'hotplugmemoryslots'. The memory parameter is mapped to <currentMemory> element,
the 'maxmemory' sub-option is mapped to <memory> element and 'hotplugmemorymax' and
'hotplugmemoryslots' are mapped to <maxMemory> element.
To configure memory modules which can be hotunplugged see --memdev description.
Use --memory=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsMemoryAllocation>
--memorybacking OPTIONS
This option will influence how virtual memory pages are backed by host pages.
Use --memorybacking=? to see a list of all available sub options. Complete details
at <http://libvirt.org/formatdomain.html#elementsMemoryBacking>
--arch ARCH
Request a non-native CPU architecture for the guest virtual machine. If omitted,
the host CPU architecture will be used in the guest.
--machine MACHINE
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.
--metadata OPT=VAL,[...]
Specify metadata values for the guest. Possible options include name, uuid, title,
and description. This option deprecates -u/--uuid and --description.
Use --metadata=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsMetadata>
--events OPT=VAL,[...]
Specify events values for the guest. Possible options include on_poweroff,
on_reboot, and on_crash.
Use --events=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsEvents>
--resource OPT=VAL,[...]
Specify resource partitioning for the guest.
Use --resource=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#resPartition>
--sysinfo OPT=VAL,[...]
Configure sysinfo/SMBIOS values exposed to the guest OS. '--sysinfo host' can be
used to expose the host's SMBIOS info to the VM, otherwise values can be manually
specified.
Use --sysinfo=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsSysinfo>
--qemu-commandline ARGS
Pass options directly to the qemu emulator. Only works for the libvirt qemu driver.
The option can take a string of arguments, for example:
--qemu-commandline="-display gtk,gl=on"
Environment variables are specified with 'env', for example:
--qemu-commandline=env=DISPLAY=:0.1
Complete details about the libvirt feature:
<https://libvirt.org/drvqemu.html#qemucommand>
--vcpus OPTIONS
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 preferring sockets over cores over
threads.
'cpuset' sets 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.
Use --vcpus=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsCPUAllocation>
--numatune OPTIONS
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
"--vcpus cpuset=" option. mode can be one of 'interleave', 'preferred', or 'strict'
(the default). See 'man 8 numactl' for information about each mode.
Use --numatune=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsNUMATuning>
--memtune OPTIONS
Tune memory policy for the domain process. Example invocations
--memtune 1000
--memtune hard_limit=100,soft_limit=60,swap_hard_limit=150,min_guarantee=80
Use --memtune=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsMemoryTuning>
--blkiotune OPTIONS
Tune blkio policy for the domain process. Example invocations
--blkiotune 100
--blkiotune weight=100,device_path=/dev/sdc,device_weight=200
Use --blkiotune=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsBlockTuning>
--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 known to libvirt.
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.
If exact CPU model is specified virt-install will automatically copy CPU features
available on the host to mitigate recent CPU speculative execution side channel and
Microarchitectural Store Buffer Data security vulnerabilities. This however will
have some impact on performance and will break migration to hosts without security
patches. In order to control this behavior there is a secure parameter. Possible
values are on and off, with on as the default. It is highly recommended to leave
this enabled and ensure all virtualization hosts have fully up to date microcode,
kernel & virtualization software installed.
Some examples:
--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.
--cpu host-model-only
Expose the nearest host CPU model configuration to the guest. It is the best
CPU which can be used for a guest on any of the hosts.
--cpu cell0.memory=1234,cell0.cpus=0-3,cell1.memory=5678,cell1.cpus=4-7
Example of specifying two NUMA cells. This will generate XML like:
<cpu>
<numa>
<cell cpus="0-3" memory="1234"/>
<cell cpus="4-7" memory="5678"/>
</numa>
</cpu>
--cpu host-passthrough,cache.mode=passthrough
Example of passing through the host cpu's cache information.
Use --cpu=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsCPU>
--cputune OPTIONS
Tune CPU parameters for the guest.
Configure which of the host's physical CPUs the domain VCPU will be pinned to.
Example invocation
--cputune vpcupin0.vcpu=0,vpcupin0.cpuset=0-3,vpcupin1.vcpu=1,vpcupin1.cpuset=4-7
Use --cputune=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsCPUTuning>
--security type=TYPE[,label=LABEL][,relabel=yes|no]
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.
To have libvirt automatically apply your static label, you must specify
relabel=yes. Otherwise disk images must be manually labeled by the admin, including
images that virt-install is asked to create.
Use --security=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#seclabel>
--features FEAT=on|off,...
Set elements in the guests <features> XML on or off. Examples include acpi, apic,
eoi, privnet, and hyperv features. Some examples:
--features eoi=on
Enable APIC PV EOI
--features hyperv_vapic=on,hyperv_spinlocks=off
Enable hypver VAPIC, but disable spinlocks
--features kvm_hidden=on
Allow the KVM hypervisor signature to be hidden from the guest
--features pvspinlock=on
Notify the guest that the host supports paravirtual spinlocks for example by
exposing the pvticketlocks mechanism.
--features gic_version=2
This is relevant only for ARM architectures. Possible values are "host" or
version number.
--features smm=on
This enables System Management Mode of hypervisor. Some UEFI firmwares may
require this feature to be present. (QEMU supports SMM only with q35 machine
type.)
Use --features=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsFeatures>
--clock offset=OFFSET,TIMER_OPT=VAL,...
Configure the guest's <clock> XML. Some supported options:
--clock offset=OFFSET
Set the clock offset, ex. 'utc' or 'localtime'
--clock TIMER_present=no
Disable a boolean timer. TIMER here might be hpet, kvmclock, etc.
--clock TIMER_tickpolicy=VAL
Set a timer's tickpolicy value. TIMER here might be rtc, pit, etc. VAL might be
catchup, delay, etc. Refer to the libvirt docs for all values.
Use --clock=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsTime>
--pm OPTIONS
Configure guest power management features. Example suboptions include
suspend_to_mem=on|off and suspend_to_disk=on|off
Use --pm=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsPowerManagement>
INSTALLATION OPTIONS
-c OPTIONS
--cdrom OPTIONS
File or device used as a virtual CD-ROM device. It can be path to an ISO image or
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 OPTIONS
Distribution tree installation 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.
--location allows things like --extra-args for kernel arguments, and using
--initrd-inject. If you want to use those options with CDROM media, you have a few
options:
* Run virt-install as root and do --location ISO
* Mount the ISO at a local directory, and do --location DIRECTORY
* Mount the ISO at a local directory, export that directory over local http, and do
--location http://localhost/DIRECTORY
The "LOCATION" can take one of the following forms:
http://host/path
An HTTP server location containing an installable distribution image.
ftp://host/path
An FTP server location containing an installable distribution image.
nfs:host:/path or nfs://host/path
An NFS server location containing an installable distribution image. This
requires running virt-install as root.
DIRECTORY
Path to a local directory containing an installable distribution image. Note
that the directory will not be accessible by the guest after initial boot, so
the OS installer will need another way to access the rest of the install media.
ISO Mount the ISO and probe the directory. This requires running virt-install as
root, and has the same VM access caveat as DIRECTORY.
Some distro specific url samples:
Fedora/Red Hat Based
http://download.fedoraproject.org/pub/fedora/linux/releases/25/Server/x86_64/os
Debian
http://ftp.us.debian.org/debian/dists/stable/main/installer-amd64/
Ubuntu
http://us.archive.ubuntu.com/ubuntu/dists/wily/main/installer-amd64/
Suse
http://download.opensuse.org/distribution/11.0/repo/oss/
Mandriva
ftp://ftp.uwsg.indiana.edu/linux/mandrake/official/2009.0/i586/
Mageia
ftp://distrib-coffee.ipsl.jussieu.fr/pub/linux/Mageia/distrib/1
--pxe
Use the PXE boot protocol to load the initial ramdisk and kernel for starting the
guest installation process.
--import
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".
--livecd
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 "--disk none" flag in combination.
-x EXTRA
--extra-args OPTIONS
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"
--initrd-inject PATH
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 file:
--initrd-inject=/path/to/my.ks --extra-args "ks=file:/my.ks"
--os-variant OS_VARIANT
Optimize the guest configuration for a specific operating system (ex. 'fedora18',
'rhel7', 'winxp'). While not required, specifying this options is HIGHLY
RECOMMENDED, as it can greatly increase performance by specifying virtio among
other guest tweaks.
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'. Autodetection can be forced with the special value
'auto'.
Use the command "osinfo-query os" to get the list of the accepted OS variants.
--boot BOOTOPTS
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 its 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.
Some examples:
--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.
--boot kernel=KERNEL,initrd=INITRD,dtb=DTB
Have guest permanently boot off a local kernel/initrd pair with an external
device tree binary. DTB can be required for some non-x86 configurations like
ARM or PPC
--boot loader=BIOSPATH
Use BIOSPATH as the virtual machine BIOS.
--boot menu=on,useserial=on
Enable the bios boot menu, and enable sending bios text output over serial
console.
--boot init=INITPATH
Path to a binary that the container guest will init. If a root "--filesystem"
has been specified, virt-install will default to /sbin/init, otherwise will
default to /bin/sh.
--boot uefi
Configure the VM to boot from UEFI. In order for virt-install to know the
correct UEFI parameters, libvirt needs to be advertising known UEFI binaries
via domcapabilities XML, so this will likely only work if using properly
configured distro packages.
--boot
loader=/.../OVMF_CODE.fd,loader_ro=yes,loader_type=pflash,nvram_template=/.../OVMF_VARS.fd,loader_secure=no
Specify that the virtual machine use the custom OVMF binary as boot firmware,
mapped as a virtual flash chip. In addition, request that libvirt instantiate
the VM-specific UEFI varstore from the custom "/.../OVMF_VARS.fd" varstore
template. This is the recommended UEFI setup, and should be used if --boot uefi
doesn't know about your UEFI binaries. If your UEFI firmware supports Secure
boot feature you can enable it via loader_secure.
Use --boot=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsOS>
--idmap OPTIONS
If the guest configuration declares a UID or GID mapping, the 'user' namespace will
be enabled to apply these. A suitably configured UID/GID mapping is a pre-
requisite to make containers secure, in the absence of sVirt confinement.
--idmap can be specified to enable user namespace for LXC containers
Example:
--idmap
uid_start=0,uid_target=1000,uid_count=10,gid_start=0,gid_target=1000,gid_count=10
Use --idmap=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsOSContainer>
STORAGE OPTIONS
--disk OPTIONS
Specifies media to use as storage for the guest, with various options. The general
format of a disk string is
--disk opt1=val1,opt2=val2,...
The simplest invocation to create a new 10G disk image and associated disk device:
--disk size=10
virt-install will generate a path name, and place it in the default image location
for the hypervisor. To specify media, the command can either be:
--disk /some/storage/path[,opt1=val1]...
or explicitly specify one of the following arguments:
path
A path to some storage media to use, existing or not. Existing media can be a
file or block device.
Specifying a non-existent path implies attempting to create the new storage,
and will require specifying a 'size' value. Even for remote hosts, virt-install
will try to use libvirt storage APIs to automatically create the given path.
If the hypervisor supports it, path can also be a network URL, like
http://example.com/some-disk.img . For network paths, they hypervisor will
directly access the storage, nothing is downloaded locally.
pool
An existing libvirt storage pool name to create new storage on. Requires
specifying a 'size' value.
vol An existing libvirt storage volume to use. This is specified as
'poolname/volname'.
Other available options:
device
Disk device type. Value can be 'cdrom', 'disk', 'lun' or 'floppy'. Default is
'disk'. If a 'cdrom' is specified, and no install method is chosen, the cdrom
is used as the install media.
boot_order
Guest installation with multiple disks will need this parameter to boot
correctly after being installed. A boot_order parameter will take values
1,2,3,... Devices with lower value has higher priority.
bus Disk bus type. Value can be 'ide', 'sata', 'scsi', 'usb', 'virtio' or 'xen'.
The default is hypervisor dependent since not all hypervisors support all bus
types.
removable
Sets the removable flag (/sys/block/$dev/removable on Linux). Only used with
QEMU and bus=usb. Value can be 'on' or 'off'.
readonly
Set drive as readonly (takes 'on' or 'off')
shareable
Set drive as shareable (takes 'on' or 'off')
size
size (in GiB) to use if creating new storage
sparse
whether to skip fully allocating newly created storage. Value is 'yes' or 'no'.
Default is 'yes' (do not fully allocate) unless it isn't supported by the
underlying storage type.
The initial time taken to fully-allocate the guest virtual disk (sparse=no)
will be usually 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.
backing_store
Path to a disk to use as the backing store for the newly created image.
backing_format
Disk image format of backing_store
cache
The cache mode to be used. The host pagecache provides cache memory. The cache
value can be 'none', 'writethrough', 'directsync', 'unsafe' or 'writeback'.
'writethrough' provides read caching. 'writeback' provides read and write
caching. 'directsync' bypasses the host page cache. 'unsafe' may cache all
content and ignore flush requests from the guest.
discard
Whether discard (also known as "trim" or "unmap") requests are ignored or
passed to the filesystem. The value can be either "unmap" (allow the discard
request to be passed) or "ignore" (ignore the discard request). Since 1.0.6
(QEMU and KVM only)
format
Disk image format. 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.
If not specified when creating file images, this will default to 'qcow2'.
If creating storage, this will be the format of the new image. If using an
existing image, this overrides libvirt's format auto-detection.
driver_name
Driver name the hypervisor should use when accessing the specified storage.
Typically does not need to be set by the user.
driver_type
Driver format/type the hypervisor should use when accessing the specified
storage. Typically does not need to be set by the user.
io Disk IO backend. Can be either "threads" or "native".
error_policy
How guest should react if a write error is encountered. Can be one of "stop",
"ignore", or "enospace"
serial
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
startup_policy
It defines what to do with the disk if the source file is not accessible. See
possible values in <http://www.libvirt.org/formatdomain.html#elementsDisks>,
"startupPolicy" attribute of the <disk> element
snapshot_policy
Defines default behavior of the disk during disk snapshots. See possible
values in <http://www.libvirt.org/formatdomain.html#elementsDisks>, "snapshot"
attribute of the <disk> element.
See the examples section for some uses. This option deprecates -f/--file,
-s/--file-size, --nonsparse, and --nodisks.
Use --disk=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsDisks>
--filesystem
Specifies a directory on the host to export to the guest. The most simple
invocation is:
--filesystem /source/on/host,/target/point/in/guest
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:
type
The type or the source directory. Valid values are 'mount' (the default) or
'template' for OpenVZ templates.
mode
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.
source
The directory on the host to share.
target
The mount location to use in the guest.
Use --filesystem=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsFilesystems>
NETWORKING OPTIONS
-w OPTIONS
--network OPTIONS
Connect the guest to the host network. The value for "NETWORK" can take one of 4
formats:
bridge=BRIDGE
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.
network=NAME
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.
type=direct,source=IFACE[,source_mode=MODE]
Direct connect to host interface IFACE using macvtap.
user
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.
none
Tell virt-install not to add any default network interface.
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:
model
Network device model as seen by the guest. Value can be any nic model supported
by the hypervisor, e.g.: 'e1000', 'rtl8139', 'virtio', ...
mac 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'.
filterref
Controlling firewall and network filtering in libvirt. Value can be any
nwfilter defined by the "virsh" 'nwfilter' subcommands. Available filters can
be listed by running 'virsh nwfilter-list', e.g.: 'clean-traffic',
'no-mac-spoofing', ...
virtualport_type
The type of virtual port profile, one the following values
"802.Qbg"
The following additional parameters are accepted
virtualport_managerid
The VSI Manager ID identifies the database containing the VSI type and
instance definitions. This is an integer value and the value 0 is
reserved.
virtualport_typeid
The VSI Type ID identifies a VSI type characterizing the network
access. VSI types are typically managed by network administrator. This
is an integer value.
virtualport_typeidversion
The VSI Type Version allows multiple versions of a VSI Type. This is an
integer value.
virtualport_instanceid
The VSI Instance ID Identifier is generated when a VSI instance (i.e. a
virtual interface of a virtual machine) is created. This is a globally
unique identifier.
"802.Qbh"
The following additional parameters are accepted
virtualport_profileid
The profile ID contains the name of the port profile that is to be
applied to this interface. This name is resolved by the port profile
database into the network parameters from the port profile, and those
network parameters will be applied to this interface.
"openvswitch"
The following additional parameters are accepted
virtualport_profileid
The OpenVSwitch port profile for the interface
virtualport_interfaceid
A UUID to uniquely identify the interface. If omitted one will be
generated automatically
"midonet"
The following additional parameters are accepted
virtualport_interfaceid
A UUID identifying the port in the network to which the interface will
be bound
Use --network=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsNICS>
This option deprecates -m/--mac, -b/--bridge, and --nonetworks
GRAPHICS OPTIONS
If no graphics option is specified, "virt-install" will try to select the appropriate
graphics 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
--graphics TYPE,opt1=arg1,opt2=arg2,...
For example:
--graphics vnc,password=foobar
The supported options are:
type
The display type. This is one of:
vnc
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).
spice
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
none
No graphical console will be allocated for the guest. Guests will likely need
to have a text console configured on the first serial port in the guest (this
can be done via the --extra-args option). The command 'virsh console NAME' can
be used to connect to the serial device.
port
Request a permanent, statically assigned port number for the guest console.
This is used by 'vnc' and 'spice'
tlsport
Specify the spice tlsport.
listen
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.
Use 'none' to specify that the display server should not listen on any port.
The display server can be accessed only locally through libvirt unix socket
(virt-viewer with --attach for instance).
Use 'socket' to have the VM listen on a libvirt generated unix socket path on
the host filesystem.
This is used by 'vnc' and 'spice'
keymap
Request that the virtual 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' and 'spice'.
password
Request a console 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'
gl Whether to use OpenGl accelerated rendering. Value is 'yes' or 'no'. This is
used by 'spice'.
rendernode
DRM render node path to use. This is used when 'gl' is enabled.
Use --graphics=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsGraphics>
This deprecates the following options: --vnc, --vncport, --vnclisten, -k/--keymap,
--sdl, --nographics
--noautoconsole
Don't automatically try to connect to the guest console. The default behaviour is
to launch virt-viewer(1) 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 OPTIONS
Options 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.
--container
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).
--virt-type
The hypervisor to install on. Example choices are kvm, qemu, or xen. Available
options are listed via 'virsh capabilities' in the <domain> tags.
This deprecates the --accelerate option, which is now the default behavior. To
install a plain QEMU guest, use '--virt-type qemu'
DEVICE OPTIONS
All devices have a set of address.* options for configuring the particulars of the
device's address on its parent controller or bus. See
"http://libvirt.org/formatdomain.html#elementsAddress" for details.
--controller OPTIONS
Attach a controller device to the guest. TYPE is one of: ide, fdc, scsi, sata,
virtio-serial, or usb.
Controller also supports the special values usb2 and usb3 to specify which version
of the USB controller should be used (version 2 or 3).
model
Controller model. These may vary according to the hypervisor and its version.
Most commonly used models are e.g. auto, virtio-scsi for the scsi controller,
ehci or none for the usb controller. For full list and further details on
controllers/models, see
"http://libvirt.org/formatdomain.html#elementsControllers".
address
Shorthand for setting a manual PCI address from an lscpi style string. The
preferred method for setting this is using the address.* parameters.
index
A decimal integer describing in which order the bus controller is encountered,
and to reference the controller bus.
master
Applicable to USB companion controllers, to define the master bus startport.
Examples:
--controller usb,model=ich9-ehci1,address=0:0:4.0,index=0
Adds a ICH9 EHCI1 USB controller on PCI address 0:0:4.0
--controller usb,model=ich9-uhci2,address=0:0:4.7,index=0,master=2
Adds a ICH9 UHCI2 USB companion controller for the previous master controller,
ports start from port number 2.
The parameter multifunction='on' will be added automatically to the proper
device (if needed). This applies to all PCI devices.
Use --controller=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsControllers>
--input OPTIONS
Attach an input device to the guest. Example input device types are mouse, tablet,
or keyboard.
Use --input=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsInput>
--hostdev OPTIONS
--host-device OPTIONS
Attach a physical host device to the guest. Some example values for HOSTDEV:
--hostdev pci_0000_00_1b_0
A node device name via libvirt, as shown by 'virsh nodedev-list'
--hostdev 001.003
USB by bus, device (via lsusb).
--hostdev 0x1234:0x5678
USB by vendor, product (via lsusb).
--hostdev 1f.01.02
PCI device (via lspci).
Use --hostdev=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsHostDev>
--sound MODEL
Attach a virtual audio device to the guest. MODEL specifies the emulated sound card
model. Possible values are ich6, ich9, ac97, es1370, sb16, pcspk, or default.
'default' will try to pick the best model that the specified OS supports.
This deprecates the old --soundhw option.
Use --sound=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsSound>
--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
reset
Forcefully reset the guest (the default)
poweroff
Forcefully power off the guest
pause
Pause the guest
none
Do nothing
shutdown
Gracefully shutdown the guest (not recommended, since a hung guest probably
won't respond to a graceful shutdown)
MODEL is the emulated device model: either i6300esb (the default) or ib700. Some
examples:
Use the recommended settings:
--watchdog default
Use the i6300esb with the 'poweroff' action
--watchdog i6300esb,action=poweroff
Use --watchdog=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsWatchdog>
--parallel OPTIONS
--serial OPTIONS
Specifies a serial device to attach to the guest, with various options. The general
format of a serial string is
--serial type,opt1=val1,opt2=val2,...
--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 'bind'. 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.
Some examples:
Wait for connections on any address, port 4567:
--serial tcp,host=0.0.0.0:4567
Connect to localhost, port 1234:
--serial tcp,host=:1234,mode=connect
Wait for telnet connection on localhost, port 2222. The user could then connect
interactively to this console via 'telnet localhost 2222':
--serial tcp,host=:2222,mode=bind,protocol=telnet
--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):
--serial udp,host=:514
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 udp,host=192.168.10.20:4444
--serial unix,path=UNIXPATH,mode=MODE
Unix socket, see unix(7). MODE has similar behavior and defaults as --serial
tcp,mode=MODE
Use --serial=? or --parallel=? to see a list of all available sub options. Complete
details at <http://libvirt.org/formatdomain.html#elementsCharSerial> and
<http://libvirt.org/formatdomain.html#elementsCharParallel>
--channel
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.
Use --channel=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsCharChannel>
--console
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).
Example:
--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.
Use --console=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsCharConsole>
--video OPTIONS
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, virtio, or vmvga (vmware).
Use --video=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsVideo>
--smartcard MODE[,OPTIONS]
Configure a virtual smartcard device.
Mode is one of host, host-certificates, or passthrough. Additional options are:
type
Character device type to connect to on the host. This is only applicable for
passthrough mode.
An example invocation:
--smartcard passthrough,type=spicevmc
Use the smartcard channel of a SPICE graphics device to pass smartcard info to
the guest
Use --smartcard=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsSmartcard>
--redirdev BUS[,OPTIONS]
Add a redirected device.
type
The redirection type, currently supported is tcp or spicevmc.
server
The TCP server connection details, of the form 'server:port'.
Examples of invocation:
--redirdev usb,type=tcp,server=localhost:4000
Add a USB redirected device provided by the TCP server on 'localhost' port
4000.
--redirdev usb,type=spicevmc
Add a USB device redirected via a dedicated Spice channel.
Use --redirdev=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsRedir>
--memballoon MODEL
Attach a virtual memory balloon device to the guest. If the memballoon device needs
to be explicitly disabled, MODEL='none' is used.
MODEL is the type of memballoon device provided. The value can be 'virtio', 'xen'
or 'none'. Some examples:
Use the recommended settings:
--memballoon virtio
Do not use memballoon device:
--memballoon none
Use --memballoon=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsMemBalloon>
--tpm TYPE[,OPTIONS]
Configure a virtual TPM device.
Type must be passthrough. Additional options are:
model
The device model to present to the guest operating system. Model must be tpm-
tis.
An example invocation:
--tpm passthrough,model=tpm-tis
Make the host's TPM accessible to a single guest.
--tpm /dev/tpm
Convenience option for passing through the hosts TPM.
Use --tpm=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsTpm>
--rng TYPE[,OPTIONS]
Configure a virtual RNG device.
Type can be random or egd.
If the specified type is random then these values must be specified:
backend_device
The device to use as a source of entropy.
Whereas, when the type is egd, these values must be provided:
backend_host
Specify the host of the Entropy Gathering Daemon to connect to.
backend_service
Specify the port of the Entropy Gathering Daemon to connect to.
backend_type
Specify the type of the connection: tcp or udp.
backend_mode
Specify the mode of the connection. It is either 'bind' (wait for connections
on HOST:PORT) or 'connect' (send output to HOST:PORT).
backend_connect_host
Specify the remote host to connect to when the specified backend_type is udp
and backend_mode is bind.
backend_connect_service
Specify the remote service to connect to when the specified backend_type is udp
and backend_mode is bind.
An example invocation:
--rng egd,backend_host=localhost,backend_service=8000,backend_type=tcp
Connect to localhost to the TCP port 8000 to get entropy data.
--rng /dev/random
Use the /dev/random device to get entropy data, this form implicitly uses the
"random" model.
Use --rng=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsRng>
--panic MODEL[,OPTS]
Attach a panic notifier device to the guest. For the recommended settings, use:
--panic default
Use --panic=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsPanic>
--memdev OPTS
Add a memory module to a guest which can be hotunplugged. To add a memdev you need
to configure hotplugmemory and NUMA for a guest.
Use --memdev=? to see a list of all available sub options. Complete details at
<http://libvirt.org/formatdomain.html#elementsMemory>.
MISCELLANEOUS OPTIONS
-h
--help
Show the help message and exit
--version
Show program's version number and exit
--autostart
Set the autostart flag for a domain. This causes the domain to be started on host
boot up.
--transient
Use --import or --boot and --transient if you want a transient libvirt VM. These
VMs exist only until the domain is shut down or the host server is restarted.
Libvirt forgets the XML configuration of the VM after either of these events. Note
that the VM's disks will not be deleted. See:
<http://wiki.libvirt.org/page/VM_lifecycle#Transient_guest_domains_vs_Persistent_guest_domains>
--print-xml [STEP]
Print the generated XML of the guest, instead of defining it. By default this WILL
do storage creation (can be disabled with --dry-run). This option implies --quiet.
If the VM install has multiple phases, by default this will print all generated
XML. If you want to print a particular step, use --print-xml 2 (for the second
phase XML).
--noreboot
Prevent the domain from automatically rebooting after the install has completed.
--wait WAIT
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 necessarily 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.
--dry-run
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.
--check
Enable or disable some validation checks. Some examples are warning about using a
disk that's already assigned to another VM (--check path_in_use=on|off), or warning
about potentially running out of space during disk allocation (--check
disk_size=on|off). Most checks are performed by default.
-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 "~/.cache/virt-manager/virt-install.log"
even if this parameter is omitted.
EXAMPLES
Install a Fedora 9 plain QEMU guest, using LVM partition, virtual networking, booting
from PXE, using VNC server/viewer, with virtio-scsi disk
# virt-install \
--connect qemu:///system \
--name demo \
--memory 500 \
--disk path=/dev/HostVG/DemoVM,bus=scsi \
--controller virtio-scsi \
--network network=default \
--virt-type qemu \
--graphics vnc \
--os-variant fedora9
Run a Live CD image under Xen fullyvirt, in diskless environment
# virt-install \
--hvm \
--name demo \
--memory 500 \
--disk none \
--livecd \
--graphics vnc \
--cdrom /root/fedora7live.iso
Run /usr/bin/httpd in a linux container guest (LXC). Resource usage is capped at 512
MiB of ram and 2 host cpus:
# virt-install \
--connect lxc:/// \
--name httpd_guest \
--memory 512 \
--vcpus 2 \
--init /usr/bin/httpd
Start a linux container guest(LXC) with a private root filesystem, using /bin/sh as
init. Container's root will be under host dir /home/LXC. The host dir "/home/test"
will be mounted at "/mnt" dir inside container:
# virt-install \
--connect lxc:/// \
--name container \
--memory 128 \
--filesystem /home/LXC,/ \
--filesystem /home/test,/mnt \
--init /bin/sh
Install a paravirtualized Xen guest, 500 MiB of RAM, a 5 GiB of disk, and Fedora Core 6
from a web server, in text-only mode, with old style --file options:
# virt-install \
--paravirt \
--name demo \
--memory 500 \
--disk /var/lib/xen/images/demo.img,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 \
--memory 512 \
--disk /home/user/VMs/mydisk.img \
--import
Start serial QEMU ARM VM, which requires specifying a manual kernel.
# virt-install \
--name armtest \
--memory 1024 \
--arch armv7l --machine vexpress-a9 \
--disk /home/user/VMs/myarmdisk.img \
--boot kernel=/tmp/my-arm-kernel,initrd=/tmp/my-arm-initrd,dtb=/tmp/my-arm-dtb,kernel_args="console=ttyAMA0 rw root=/dev/mmcblk0p3" \
--graphics none
BUGS
Please see http://virt-manager.org/page/BugReporting
COPYRIGHT
Copyright (C) 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 ALSO
virsh(1), "virt-clone(1)", "virt-manager(1)", the project website
"http://virt-manager.org"
1.5.0 2019-08-09 VIRT-INSTALL(1)
Manual page virt-install(1) line 1377/1424 (END) (press h for help or q to quit)手机扫一扫
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