Cloud projects inside of RedHat

Chris Lalancette clalance at redhat.com
Wed Dec 15 19:24:43 UTC 2010


On 12/15/10 - 10:33:26PM, Kashyap Chamarthy wrote:
> >>I guess this is incorrect. Because I'm very sure(&  rechecked) the
> >>'repomod.xml' does exist in the url(mentioned in f14x86_64.tdl). And
> >>using the very same url I do a lot of unattended network installs
> >>via virt-install and kickstart.
> >
> >Hm, OK.  It's a really good question, it should work.  Questions:
> >
> >1)  When you do the installs that succeed, do you use the virbr0 bridge, or do
> >you have a real bridge that you typically use?
>  Yes, I do have a real bridge(br0) on my laptop.
> 
> That's my current bridge configuration.
> -----------------------
> kashyap@~$ brctl show
> bridge name	bridge id		STP enabled	interfaces
> br0		8000.001f16114aca	no		eth0
> virbr0		8000.000000000000	yes		
> virbr1		8000.000000000000	yes		
> kashyap@~$
> ----------------------
> But, I also tried it on a different machine wich has the default
> virbr0( something like below) to no avail.
> -------------------
> [kashyap at foobar ~]# brctl show
> bridge name	bridge id		STP enabled	interfaces
> virbr0		8000.000000000000	yes		
> [kashyap at foobar ~]#
> -------------------
> 
> Currently oz always uses the
> >virbr0 bridge, and I'm wondering if there is some kind of firewall rule that
> >is preventing it from getting out to the network.
> 
> I have my 'iptables' turned off. (In both instances above)
> 
> >2)  What is your host system?  Fedora 13?  Fedora 14?  Something else?
> 
> F14(newest updated); x86_64. Lenovo X200.
> >
> >I'll try to reproduce this locally and see what happens.

OK, it works fine for me locally.  I can only guess that there is a rule or
something that is not properly setup for you.  So let me get a bit information
from you:

1)  brctl showstp virbr0
2)  iptables -L ; iptables -t nat -L
3)  cat /proc/sys/net/ipv4/ip_forward

If it is indeed something to do with iptables (as I suspect), then the
following *might* help out:

$ sudo virsh net-destroy default
$ sudo virsh net-start default

Let me know if that helps, and if not, please give me the information from
above.

Thanks,
-- 
Chris Lalancette



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