View source for libvirt
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**libvirt : The virtualization API**
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%%(bash)
virsh --version=long
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virsh -c qemu:///system
#virsh list
virsh -c qemu:///system start archlinux
virsh -c qemu:///system shutdown archlinux
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snapshot & restore
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virsh # snapshot-create archlinux
Domain snapshot 1315923139 created
virsh # snapshot-create archlinux
Domain snapshot 1315923216 created
virsh # snapshot-list archlinux
Name Creation Time State
---------------------------------------------------
1315923139 2011-09-13 17:12:19 +0300 running
1315923216 2011-09-13 17:13:36 +0300 running
virsh # snapshot-revert archlinux 1315923139
virsh # snapshot-list archlinux
Name Creation Time State
---------------------------------------------------
1315923139 2011-09-13 17:12:19 +0300 running
1315923216 2011-09-13 17:13:36 +0300 running
virsh # snapshot-revert archlinux 1315923216
virsh # snapshot-list archlinux
Name Creation Time State
---------------------------------------------------
1315923139 2011-09-13 17:12:19 +0300 running
1315923216 2011-09-13 17:13:36 +0300 running
virsh # snapshot-delete archlinux 1315923216
Domain snapshot 1315923216 deleted
virsh # snapshot-delete archlinux 1315923139
Domain snapshot 1315923139 deleted
virsh # snapshot-create-as archlinux archlinux_20110913_1742
Domain snapshot archlinux_20110913_1742 created
virsh # snapshot-list archlinux
Name Creation Time State
---------------------------------------------------
archlinux_20110913_1742 2011-09-13 17:42:48 +0300 running
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=== virsh connect ===
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virsh -c qemu:///system list --all
or via ssh
virsh -c qemu+ssh://example.com/system list --all
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Problem on client:
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error: End of file while reading data: sh: nc.openbsd: command not found: Input/output error
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Solution on server:
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# ln -s /usr/bin/nc /usr/bin/nc.openbsd
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((#top))
----
=== virt-install ===
eg.
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#!/bin/sh
virt-install \
--connect=qemu+ssh://ebal@example.com/system \
-n archlinux \
-r 512 \
-d \
--description='Arch Linux, a lightweight and flexible Linux' \
--os-type=linux \
--boot menu=on \
--disk path=/var/lib/libvirt/images/archlinux.qcow2,size=8 \
-c /var/lib/libvirt/isos/archlinux-2011.08.19-core-dual.iso \
--livecd \
--graphics vnc,listen=10.10.10.1,port=5902
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((#top))
----
=== libvirtd ~PolicyKit ===
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/etc/polkit-1/localauthority/50-local.d/libvirtd.pkla
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%%
[Local access to libvirtd to group: kvm]
Identity = unix-group:kvm
Action = org.libvirt.unix.manage
ResultAny = yes
ResultInactive = yes
ResultActive = yes
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((#top))
----
=== libvirt capabilities ===
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# virsh capabilities
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((#top))
----
=== interfaces ===
%%(bash)
virsh iface-list
virsh iface-undefine em1
virsh iface-destroy em1
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((#top))
----
===auth===
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unix_sock_group = "kvm"
unix_sock_ro_perms = "0777"
unix_sock_rw_perms = "0770"
unix_sock_dir = "/var/run/libvirt"
auth_unix_ro = "none"
auth_unix_rw = "none"
%%
((#top))
----
=== domstate ===
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$ sudo virsh domstate winxp
running
$ sudo virsh domstate f17
shut off
%%