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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I am 99% sure I configured the linuxbridge agent on the network node the same way as on the compute nodes, but it was doing nothing. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>But I did it a while ago, so I could be wrong. Anyway having the agent constantly running just to create a bridge at boot is bit of a waste.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The next maintenance window I will try again, just to understand.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Kris G. Lindgren [mailto:klindgren@godaddy.com] <br><b>Sent:</b> Wednesday 08 April 2015 17:01<br><b>To:</b> Daniele Venzano; 'Daniel Comnea'<br><b>Cc:</b> openstack-operators@lists.openstack.org<br><b>Subject:</b> Re: [Openstack-operators] Flat network with linux bridge plugin<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'>We run this exact configuration with the exception that we are using OVS instead of linux bridge agent. On your "Network nodes" (those running metadata/dhcp) you need to configure them exactly like you do you compute services from the standpoint of the L2 agent. Once we did that when the l2 agent starts it creates the bridges it cares about and the dhcp agent then gets plugged into those bridges. We didn't have to specifically create any bridges or manually plug vifs into it to get everything to work.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'>I would be highly surprised if the linuxbridge agent acted any differently. Mainly because the dhcp agent consumes an IP/port on the network, no different than a vm would. So the L2 agent should plug it for you automatically.<o:p></o:p></span></p></div><div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'>____________________________________________<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'>Kris Lindgren<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'>Senior Linux Systems Engineer<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'>GoDaddy, LLC.<o:p></o:p></span></p></div></div></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p></div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>From: </span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>Daniele Venzano <<a href="mailto:daniele.venzano@eurecom.fr">daniele.venzano@eurecom.fr</a>><br><b>Organization: </b>EURECOM<br><b>Date: </b>Wednesday, April 8, 2015 at 4:21 AM<br><b>To: </b>'Daniel Comnea' <<a href="mailto:comnea.dani@gmail.com">comnea.dani@gmail.com</a>><br><b>Cc: </b>"<a href="mailto:openstack-operators@lists.openstack.org">openstack-operators@lists.openstack.org</a>" <<a href="mailto:openstack-operators@lists.openstack.org">openstack-operators@lists.openstack.org</a>><br><b>Subject: </b>Re: [Openstack-operators] Flat network with linux bridge plugin<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p></div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Juno (from ubuntu cloud), on Ubuntu 14.04</span><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'> <a href="mailto:daniel.comnea@gmail.com">daniel.comnea@gmail.com</a> [<a href="mailto:daniel.comnea@gmail.com">mailto:daniel.comnea@gmail.com</a>] <b>On Behalf Of </b>Daniel Comnea<br><b>Sent:</b> Wednesday 08 April 2015 11:29<br><b>To:</b> Daniele Venzano<br><b>Cc:</b> Sam Morrison; <a href="mailto:openstack-operators@lists.openstack.org">openstack-operators@lists.openstack.org</a><br><b>Subject:</b> Re: [Openstack-operators] Flat network with linux bridge plugin</span><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal><span style='color:black'> <o:p></o:p></span></p><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='color:black'>Which release are you using it, on which OS ?<o:p></o:p></span></p></div></div><div><p class=MsoNormal><span style='color:black'> <o:p></o:p></span></p><div><p class=MsoNormal><span style='color:black'>On Wed, Apr 8, 2015 at 9:00 AM, Daniele Venzano <<a href="mailto:daniele.venzano@eurecom.fr" target="_blank">daniele.venzano@eurecom.fr</a>> wrote:<o:p></o:p></span></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Well, I found a way to make it work.</span><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Yes, you need a bridge (brctl addbr ...).</span><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>You need to create it by hand and add the interfaces (physical and dnsmasq namespace) to it.</span><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The linuxbridge agent installed on the network node does not do anything.</span><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The problem with this is that the interface for the namespace is created after an arbitrary amount of time by one of the neutron daemons, so you cannot simply put the bridge creation in one of the boot scripts, but you have to wait for the interface to appear.</span><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span style='color:black'><o:p></o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'> Sam Morrison [mailto:<a href="mailto:sorrison@gmail.com" target="_blank">sorrison@gmail.com</a>] <br><b>Sent:</b> Wednesday 08 April 2015 05:46<br><b>To:</b> Daniele Venzano<br><b>Cc:</b> <a href="mailto:openstack-operators@lists.openstack.org" target="_blank">openstack-operators@lists.openstack.org</a><br><b>Subject:</b> Re: [Openstack-operators] Flat network with linux bridge plugin</span><span style='color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'>Hi Daniele,<o:p></o:p></span></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'>I’ve started playing with neutron too and have the exact same issue. Did you find a solution?<o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'>Cheers,<o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'>Sam<o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p></div><div><div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'>On 18 Feb 2015, at 8:47 pm, Daniele Venzano <<a href="mailto:Daniele.Venzano@eurecom.fr" target="_blank">Daniele.Venzano@eurecom.fr</a>> wrote:<o:p></o:p></span></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>Hello,</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>I’m trying to configure a very simple Neutron setup.</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>On the compute nodes I want a linux bridge connected to a physical interface on one side and the VMs on the other side. This I have, by using the linux bridge agent and a physnet1:em1 mapping in the config file.</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>On the controller side I need the dhcp and metadata agents. I installed and configured them. They start, no errors in logs. I see a namespace with a ns-* interface in it for dhcp. Outside the namespace I see a tap* interface without IP address, not connected to anything.</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>I installed the linux bridge agent also on the controller node, hoping it would create the bridge between the physnet interface and the dhcp namespace tap interface, but it just sits there and does nothing.</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>So: I have VMs sending DHCP requests. I see the requests on the controller node, but the dhcp namespace is not connected to anything.</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>I can provide logs and config files, but probably I just need a hint in the right direction.</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>On the network controller:</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>Do I need a bridge to connect the namespace to the physical interface?</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>Should this bridge be created by me by hand, or by the linuxbridge agent? Should I run the linuxbridge agent on the network controller?</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>I do not want/have a l3 agent. I want to have just one shared network for all tenants, very simple.</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>Thanks,</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>Daniele</span><span style='color:black'><o:p></o:p></span></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";color:black'>_______________________________________________<br>OpenStack-operators mailing list<br></span><span style='color:black'><a href="mailto:OpenStack-operators@lists.openstack.org" target="_blank"><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";color:purple'>OpenStack-operators@lists.openstack.org</span></a></span><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";color:black'><br></span><span style='color:black'><a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators" target="_blank"><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";color:purple'>http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators</span></a><o:p></o:p></span></p></div></blockquote></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p></div></div></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='color:black'><br>_______________________________________________<br>OpenStack-operators mailing list<br><a href="mailto:OpenStack-operators@lists.openstack.org">OpenStack-operators@lists.openstack.org</a><br><a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators" target="_blank">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators</a><o:p></o:p></span></p></div><p class=MsoNormal><span style='color:black'> <o:p></o:p></span></p></div></div></div></div></body></html>