libvirt users - Mar 2012 - Unable to connect qemu:///system on CentOS 6.2 X86_64

Dear all:
    I ust installed Fedora16Fedora16 X86_64 on my new machine, and then I
ran the commands as follows(ran as root):

yum install qemu-kvm
yum install qemu
yum install libvirt
yum install virt-manager

   then I started the libvirtd as follow:
/etc/init.d/lbvirtd start

So , it ran well.


However, after a few days , when I ran the command "virt-manager" , it
showed as in the attachment.



it seemed that ti cannot connect the hipervisor.


Then I did a little test:
I ran the conmand "virsh list" , but it didnot work,either.

Then I used Python as follows:
import libvirt
cc = libvirt.open(r'qemu:///system'
)

but it didnot work,either.


All the test above are under root . I hope that someone can give me some
suggestiion. Thanks to all!
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On Mon, 5 Mar 2012 20:50:29 +0800, suyi wang <wangsuyi640 at gmail.com>
wrote:
> Dear all:
>  ? ? I ust installed Fedora16Fedora16 X86_64 on my new machine, and
> then I ran the commands as follows(ran as root):
> 
> yum install qemu-kvm
> yum install qemu
> yum install libvirt
> yum install virt-manager
> 
>  ? ?then I started the libvirtd as follow:
> /etc/init.d/lbvirtd start
> 
> So , it ran well.
> 
> However, after a few days , when I ran the command "virt-manager"
,
> it showed as in the attachment.
> 
> it seemed that ti cannot connect the hipervisor.
> 
> Then I did a little test:
> I ran the conmand "virsh list" , but it didnot work,either.
> 
> Then I used Python as follows:
> import libvirt
>  cc = libvirt.open(r'qemu:///system'
> )
> 
> but it didnot work,either.
> 
> All the test above are under root . I hope that someone can give me
> some suggestiion. Thanks to all!

Try:

# service qemu-kvm restart
# service libvirtd restart 

:-)

-- 

Micha? Kulling
http://iq.pl/

Try one more time and paste /var/log/message (tail -100
/var/log/message) and /var/log/secure (tail -40 /var/log/secure) to
pastebin.com and send link.

On Mon, 5 Mar 2012 22:16:15 +0800, suyi wang <wangsuyi640 at gmail.com>
wrote:
> I just tried it , but... :(
> 
> 2012/3/5 Micha? Kulling | IQ.pl 
>  On Mon, 5 Mar 2012 20:50:29 +0800, suyi wang 
>  wrote:
> 
>> Dear all:
>  > ?? ? I ust installed Fedora16Fedora16 X86_64 on my new machine,
> and
>  > then I ran the commands as follows(ran as root):
>  >
>  > yum install qemu-kvm
>  > yum install qemu
>  > yum install libvirt
>  > yum install virt-manager
>  >
>  > ?? ?then I started the libvirtd as follow:
>  > /etc/init.d/lbvirtd start
>  >
>  > So , it ran well.
>  >
>  > However, after a few days , when I ran the command
"virt-manager"
> ,
>  > it showed as in the attachment.
>  >
>  > it seemed that ti cannot connect the hipervisor.
>  >
>  > Then I did a little test:
>  > I ran the conmand "virsh list" , but it didnot work,either.
>  >
>  > Then I used Python as follows:
>  > import libvirt
>  > ?cc = libvirt.open(r'qemu:///system'
>  > )
>  >
>  > but it didnot work,either.
>  >
>  > All the test above are under root . I hope that someone can give
> me
>  > some suggestiion. Thanks to all!
> 
>  Try:
> 
>  # service qemu-kvm restart
>  # service libvirtd restart
> 
>  :-)
> 
>  --
> 
>  Micha? Kulling
>  http://iq.pl/ [3]
> 
> 
> 
> Links:
> ------
> [1] mailto:mkulling at iq.pl
> [2] mailto:wangsuyi640 at gmail.com
> [3] http://iq.pl/
-- 

Micha? Kulling
http://iq.pl/