<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Since there seems to be a fair amount of people on this list running Ceph with Openstack, I wanted to ask what configuration most people are using for their Ceph/Openstack configuration.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We tried installing Ceph on CentOS 6 (storage nodes and nova nodes) but discovered that the kernel that is included in RDO (for nova) doesn’t include rbd support in qemu-img. No problem we thought, we will just use the kernel-lt from elrepo which does include support for rbd. However after installing those kernels we discovered that our GRE based networking didn’t work. After some additional troubleshooting we determined that the kernel-lt didn’t include the backported ovs vport GRE capability that the RDO kernel has (it apparently was added in 3.11 but kernel-lt is 3.10).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>So we have to decide how we want to implement our cluster and cloud. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Are you implementing Openstack on Debian/Ubuntu to get around these sorts of issues? <o:p></o:p></p><p class=MsoNormal>Are you running newer mainline kernels (kernel-ml) with CentOS 6? <o:p></o:p></p><p class=MsoNormal>Or are you running vlan based tenant isolation for your tenant networks? <o:p></o:p></p><p class=MsoNormal>Are you running custom compiled kernels?<o:p></o:p></p><p class=MsoNormal>Is there something else I am missing?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Any input from your experience is greatly appreciated.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Warm regards,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Tom Walsh<o:p></o:p></p><p class=MsoNormal>Express Web Systems<o:p></o:p></p></div></body></html>