<div dir="ltr">What CentOS images are you using? These have worked for me:<div><br></div><div><a href="https://github.com/rackerjoe/oz-image-build">https://github.com/rackerjoe/oz-image-build</a><br></div></div><div class="gmail_extra">
<br><br><div class="gmail_quote">On Wed, Apr 3, 2013 at 2:13 PM, Lorin Hochstein <span dir="ltr"><<a href="mailto:lorin@nimbisservices.com" target="_blank">lorin@nimbisservices.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Hi Joe:<div><br></div><div>It happens immediately thereafter. CentOS images have never worked on our setup.</div><div><br></div><div>Lorin<br><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Apr 3, 2013 at 3:30 PM, Joe Topjian <span dir="ltr"><<a href="mailto:joe.topjian@cybera.ca" target="_blank">joe.topjian@cybera.ca</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi Lorin,<div><br></div><div>Does this happen shortly after the guests were created? Or usually a few hours/days later? If the latter, are these guests seeing large amounts of bandwidth?</div>
<div>
<br></div><div>Thanks,</div><div>Joe</div></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div><div>On Wed, Apr 3, 2013 at 1:16 PM, Lorin Hochstein <span dir="ltr"><<a href="mailto:lorin@nimbisservices.com" target="_blank">lorin@nimbisservices.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr">Hi all:<div><br></div><div>I'm having a strange issue where networking on my CentOS guests isn't working properly, but things are working fine with my Ubuntu guests.</div>
<div><br></div><div>I'm running Folsom on Ubuntu 12.04, nova-network, not multi-host.<br>
</div><div><br></div><div>The first symptom is that CentOS instances don't get IP addresses via DHCP. If I trace the DHCP requests and replies using tcpdump, I can see the reply from dnsmasq reach the vnetX interface of the compute host, but it doesn't get to the eth0 interface of the compute host. (I'm at a loss here about how to debug something like that).</div>
<div><br></div><div>If I try to statically configure an IP address on the guest instead, networking still doesn't work. I can't ping anything on the subnet, and I don't even see the icmp traffic on vnetX of the host.</div>
<div><br></div><div>I've tried this twiddling the following options, but no change in behavior:</div><div><br></div><div>* Adding the following rule to nova-network node: <span style="font-family:arial,sans-serif;font-size:12.727272033691406px">iptables -A POSTROUTING -t mangle -p udp --dport bootpc -j CHECKSUM --checksum-fill </span></div>
<div style="font-family:arial,sans-serif;font-size:12.727272033691406px">* Adding the same rule to nova-compute node</div><div style="font-family:arial,sans-serif;font-size:12.727272033691406px">* Setting libvirt_use_virtio_for_bridge to "yes" and "no" (restarting nova-compute, re-launching instances)</div>
<div style="font-family:arial,sans-serif;font-size:12.727272033691406px"><div>* With and without vhost_net loaded in nova-compute (restarting nova-compute, re-launching instances)</div><div>* Disabling iIpv6 inside of the CentOS guest</div>
</div><div style="font-family:arial,sans-serif;font-size:12.727272033691406px"><br></div><div>Has anybody encountered this before?</div><span><font color="#888888"><div><br></div><div>Lorin</div><div><br></div>
<div>-- <br><div dir="ltr">
Lorin Hochstein<br><div>Lead Architect - Cloud Services</div><div>Nimbis Services, Inc.</div><div><a href="http://www.nimbisservices.com" target="_blank">www.nimbisservices.com</a></div></div>
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<br></blockquote></div><span><font color="#888888"><br><br clear="all"><span class="HOEnZb"><font color="#888888"><div><br></div>-- <br>Joe Topjian<div>Systems Administrator</div><div>Cybera Inc.</div><div><br></div><div>
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<div><br></div><div><font color="#666666"><span>Cybera</span><span> is a not-for-profit organization that works to spur and support innovation, for the economic benefit of Alberta, through the use of cyberinfrastructure.</span></font></div>
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</font></span></blockquote></div><span class="HOEnZb"><font color="#888888"><br><br clear="all"><div><br></div>-- <br><div dir="ltr">Lorin Hochstein<br><div>Lead Architect - Cloud Services</div><div>Nimbis Services, Inc.</div>
<div><a href="http://www.nimbisservices.com" target="_blank">www.nimbisservices.com</a></div>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br>Joe Topjian<div>Systems Administrator</div><div>Cybera Inc.</div><div><br></div><div><a href="http://www.cybera.ca" target="_blank">www.cybera.ca</a></div><div>
<br></div><div><font color="#666666"><span>Cybera</span><span> is a not-for-profit organization that works to spur and support innovation, for the economic benefit of Alberta, through the use of cyberinfrastructure.</span></font></div>
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