Fedora xen - Nov 2006 - RE: virt-manager gives "The console is currentlyunavailable" in FC6

Anyway I''d suggest:
- Check that you can ping localhost
I could ping the localhost

- Check there''s a localhost entry in /etc/hosts associated with
127.0.0.1
(and not with ::1)
I have two entries one with 127.0.0.1 and ::1. I went ahead and
commented out  ::1 entry
- Run "netstat -antp" to see what ports programs are listening on
I see various services on IP address of the local host 172.xx.xx.xx and
127.0.0.1 and ::22 and ::1 and 0.0.0.0

I see sshd, cupsd and hpiod running with local address as ::22, ::1 and
0.0.0.0.



Regards
Shobha Ranganathan
"The significant challenges we face cannot be resolved at the same level
of thinking we were at when we created them." Albert Einstein
 

-----Original Message-----
From: fedora-xen-bounces@redhat.com
[mailto:fedora-xen-bounces@redhat.com] On Behalf Of Daniel P. Berrange
Sent: Tuesday, November 14, 2006 5:28 PM
To: Robert Thiem
Cc: fedora-xen@redhat.com
Subject: Re: [Fedora-xen] virt-manager gives "The console is
currentlyunavailable" in FC6

On Wed, Nov 15, 2006 at 11:23:20AM +1000, Robert Thiem
wrote:
> When first setting up FC6 I had an issue where I could start an FC6
Xen
> guest install but couldn''t connect with VNC.
> 
> I don''t know if it''s the same (I can''t remember
the exact messages I
was
> getting), but it ended up being that "localhost"
wouldn''t resolve to
an
> IPv4 address. This was due to a nasty combination of anaconda putting
IPv4
> and v6 entries in /etc/hosts and system-config-network trimming the
> "extra" v4 entry when run.
> 
> Anyway I''d suggest:
> - Check that you can ping localhost
> - Check there''s a localhost entry in /etc/hosts associated with
127.0.0.1
> (and not with ::1)
> - Run "netstat -antp" to see what ports programs are listening on
Ahhh, that would certainly make sense - virt-manager explicitly connects
to ''localhost'' when opening the VNC connection. Since the VNC
server
doesn''t support IPv6, I think it''d be fairly safe for me to
switch
virt-manager to explicitly use ''127.0.0.1''  which would
eliminate this
particularly /etc/hosts issue.

Thanks for the info about the issue.

Regards,
Dan.
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On Tue, Nov 14, 2006 at 05:45:17PM -0800, Ranganathan, Shobha
wrote:
> Anyway I''d suggest:
> - Check that you can ping localhost
> I could ping the localhost
> 
> - Check there''s a localhost entry in /etc/hosts associated with
> 127.0.0.1
> (and not with ::1)
> I have two entries one with 127.0.0.1 and ::1. I went ahead and
> commented out  ::1 entry
> - Run "netstat -antp" to see what ports programs are listening on
> I see various services on IP address of the local host 172.xx.xx.xx and
> 127.0.0.1 and ::22 and ::1 and 0.0.0.0
> 
> I see sshd, cupsd and hpiod running with local address as ::22, ::1 and
> 0.0.0.0.
For fully-virt  / HVM guests you should see a ''qemu-dm''
process listening
on the port associated with VNC (something around 5900+). If you don''t
then this is the primary problem to address - the qemu-dm*log file may
be useful. Also grabbing the command line for qemu-dm active process
should indicate what port it tried to start on. In my case:

# virsh dumpxml  rhel4i386 | grep graphics
    <graphics type=''vnc'' port=''5900''/>
# ps -axuww | grep qemu
root      4005  0.0  0.1  64616  5132 ?        Sl   20:05   0:00
/usr/lib64/xen/bin/qemu-dm -d 2 -m 500 -boot c -serial pty -vcpus 4 -acpi
-domain-name rhel4i386 -net nic,vlan=1,macaddr=00:16:3e:39:f9:76,model=rtl8139
-net tap,vlan=1,bridge=xenbr0 -vncunused -k en-us -vnclisten 127.0.0.1
# netstat -t -a -n -p | grep qemu
tcp        0      0 127.0.0.1:5900              0.0.0.0:*                  
LISTEN      4005/qemu-dm
# virsh dumpxml  rhel4i386 | grep graphics
    <graphics type=''vnc'' port=''5900''/>


Regards,
Dan.
-- 
|=- Red Hat, Engineering, Emerging Technologies, Boston.  +1 978 392 2496 -=|
|=-           Perl modules: http://search.cpan.org/~danberr/              -=|
|=-               Projects: http://freshmeat.net/~danielpb/               -=|
|=-  GnuPG: 7D3B9505   F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505  -=|