John T. Yocum
2007-Jun-07 07:35 UTC
[Xen-users] Unable to access network after installing Xen 3.1
Hello, I''ve installed Xen 3.1 on CentOS 5 x86_64. After completing the installation, and rebooting I am unable to access the network from dom0. (There are no other domains running, as they are stored on an iSCSI SAN.) I can ping the system''s interfaces from itself, however I am unable to ping any other IPs, including those in the same subnet. In addition, xend starts without any errors, and creates the bridge interface as it should. As well, I made sure to disable any firewalls but that didn''t help either. Any insight into what may be the problem, would be much appreciated. Thank you, John _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
John T. Yocum
2007-Jun-07 08:57 UTC
Re: [Xen-users] Unable to access network after installing Xen 3.1
Hi Arik,
What do the configs for the domU''s look like? I''ve got a
system running
CentOS 5, with the included version of Xen, and haven''t had any
problems
with network access.
Here''s an example config from one of my working domU''s.
kernel = "/boot/vmlinuz-2.6.18-8.1.3.el5xen"
ramdisk = "/boot/initrd-2.6.18-8.1.3.el5xenU.img"
memory = "1024"
vcpus = "8"
name = "cp"
vif = [''bridge=xenbr0,mac=00:16:3e:01:01:01'']
disk = [''phy:hn1/cpRoot,sda1,w'',
''phy:hn1/cpHsphere,sda2,w'',
''phy:hn1/cpSwap,sda3,w'']
root = "/dev/sda1 ro"
--John
Arie Goldfeld wrote:> John,
>
> I have another problem, maybe you could help me out with it. I use
> CentOS x86_64 built-in Xen; the two Dom0 NICs work all right, but the
> guest domains cannot connect to the network. I can''t figure out
what is
> the problem...
> I have two guests:
> - FC6 fully virtualized
> - CEntOS 4.5 paravirtualized
>
> Thanks,
> Arik
>
>
> On 6/7/07, *John T. Yocum* <john@fluidhosting.com
> <mailto:john@fluidhosting.com>> wrote:
>
> Hello,
>
> I''ve installed Xen 3.1 on CentOS 5 x86_64. After completing
the
> installation, and rebooting I am unable to access the network from
> dom0.
> (There are no other domains running, as they are stored on an iSCSI
> SAN.)
>
> I can ping the system''s interfaces from itself, however I am
unable to
> ping any other IPs, including those in the same subnet.
>
> In addition, xend starts without any errors, and creates the bridge
> interface as it should. As well, I made sure to disable any firewalls
> but that didn''t help either.
>
> Any insight into what may be the problem, would be much appreciated.
>
> Thank you,
> John
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
<mailto:Xen-users@lists.xensource.com>
> http://lists.xensource.com/xen-users
>
>
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http://lists.xensource.com/xen-users
John T. Yocum
2007-Jun-07 09:11 UTC
Re: [Xen-users] Unable to access network after installing Xen 3.1
Hello, The config appears OK, although I''m not very experienced with Xen. I''d check the firewall configuration, and make sure it isn''t blocking anything. --John Arie Goldfeld wrote:> Hi John, > > thanks for your prompt reply! Appreciate your help. > > My domU config files are: > > *FC6 fully virtualized* > -------------------------------------------------------------------------------------------------------------------- > > # Automatically generated xen config file > name = "test" > builder = "hvm" > memory = "500" > disk = [ ''file:/var/lib/xen/images/test,hda,w'', ] > vif = [ ''type=ioemu, mac=00:16:3e:73:dd:8d, bridge=xenbr0'', ] > uuid = "e974c2c8-7e0d-d182-709e-838679483473" > device_model = "/usr/lib64/xen/bin/qemu-dm" > kernel = "/usr/lib/xen/boot/hvmloader" > vnc=1 > vncunused=1 > apic=1 > acpi=1 > pae=1 > > vcpus=1 > serial = "pty" # enable serial console > on_reboot = ''restart'' > on_crash = ''restart'' > > ------------------------------------------------- > > > > *CentOS 4.5 paravirtualized* > > ------------------------------------------------- > > # Automatically generated xen config file > name = "centos5pv" > memory = "512" > disk = [ ''tap:aio:/var/lib/xen/images/centos5pv,xvda,w'', ] > vif = [ ''mac=00:16:3e:78:4d:eb, bridge=xenbr1'', ] > #vif = [ ''type=ioemu, bridge=xenbr1'', ] > #vif = [ '''', ''bridge=xenbr0'' ] > #vif = [ '''' ] > vfb = ["type=vnc,vncunused=1"] > uuid = "249fc72f-41ad-c8f1-aeee-f950d5363045" > bootloader="/usr/bin/pygrub" > vcpus=4 > name="cent5pv1" > on_reboot = ''restart'' > on_crash = ''restart'' > > > > > On 6/7/07, *John T. Yocum* <john@fluidhosting.com > <mailto:john@fluidhosting.com>> wrote: > > Hi Arik, > > What do the configs for the domU''s look like? I''ve got a system running > CentOS 5, with the included version of Xen, and haven''t had any > problems > with network access. > > Here''s an example config from one of my working domU''s. > > kernel = "/boot/vmlinuz-2.6.18-8.1.3.el5xen" > ramdisk = "/boot/initrd-2.6.18-8.1.3.el5xenU.img" > memory = "1024" > vcpus = "8" > name = "cp" > vif = [''bridge=xenbr0,mac=00:16:3e:01:01:01''] > disk = [''phy:hn1/cpRoot,sda1,w'', > ''phy:hn1/cpHsphere,sda2,w'', > ''phy:hn1/cpSwap,sda3,w''] > root = "/dev/sda1 ro" > > --John > > > Arie Goldfeld wrote: > > John, > > > > I have another problem, maybe you could help me out with it. I use > > CentOS x86_64 built-in Xen; the two Dom0 NICs work all right, but the > > guest domains cannot connect to the network. I can''t figure out > what is > > the problem... > > I have two guests: > > - FC6 fully virtualized > > - CEntOS 4.5 paravirtualized > > > > Thanks, > > Arik > > > > > > On 6/7/07, *John T. Yocum* <john@fluidhosting.com > <mailto:john@fluidhosting.com> > > <mailto: john@fluidhosting.com <mailto:john@fluidhosting.com>>> > wrote: > > > > Hello, > > > > I''ve installed Xen 3.1 on CentOS 5 x86_64. After completing the > > installation, and rebooting I am unable to access the network > from > > dom0. > > (There are no other domains running, as they are stored on an > iSCSI > > SAN.) > > > > I can ping the system''s interfaces from itself, however I am > unable to > > ping any other IPs, including those in the same subnet. > > > > In addition, xend starts without any errors, and creates the > bridge > > interface as it should. As well, I made sure to disable any > firewalls > > but that didn''t help either. > > > > Any insight into what may be the problem, would be much > appreciated. > > > > Thank you, > > John > > > > _______________________________________________ > > Xen-users mailing list > > Xen-users@lists.xensource.com > <mailto:Xen-users@lists.xensource.com> > <mailto:Xen-users@lists.xensource.com > <mailto:Xen-users@lists.xensource.com>> > > http://lists.xensource.com/xen-users > > > > > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users