[Openstack] Havana Neutron OVS issue

Jitendra Kumar Bhaskar jitendra.b at pramati.com
Fri Nov 22 19:21:45 UTC 2013


Hi Heiko,

Can you please post nova-compute.log and neutron/server.log, so that We can
see where its failing. Make sure you are using 3.8.0.33-generic kernel.

Regards
*Jitendra Bhaskar*






On Fri, Nov 22, 2013 at 10:23 PM, Heiko Krämer <info at honeybutcher.de> wrote:

> Heyho guys,
>
> I'm running in the exactly same issue -.-
>
> have spend today 6 hours to find a solution but without success.
>
> Have tried with recompilation of dkms module of OpenVswitch, some
> settings on dnsmasq and so on ....
> Each spawned instance will discover for an ip address but don't get an
> answer.
> Do anyone have a hint ?
>
>
> Cheers and thx
> Heiko
> On 14.11.2013 16:44, Nick Maslov wrote:
> > Hi guys,
> >
> > I`m running neutron on ubuntu 13.10.
> >
> > And I`m having issues with VM`s getting IP through DHCP, it never gets
> one. I`m using OVS plugin.
> >
> > So, agents are up:
> >
>
> +--------------------------------------+--------------------+-----------+-------+----------------+
> > | id | agent_type | host | alive | admin_state_up |
> >
>
> +--------------------------------------+--------------------+-----------+-------+----------------+
> > | 78237168-a0ea-410c-a634-fcbc35bfc1d6 | Open vSwitch agent | nova06 |
> :-) | True |
> > | b8476a04-4cfd-434b-8b95-53a3f59cfdb9 | Open vSwitch agent | nova05 |
> :-) | True |
> > | 9f733be5-36cc-421c-90c8-83f00eb99e2a | Open vSwitch agent |
> net01-001 | :-) | True |
> > | 83a712aa-fdc7-42e0-a229-d850faa6741d | DHCP agent | net01-001 | :-)
> | True |
> > | 9b814c89-41d7-47bd-bfa2-f1825f755c9b | L3 agent | net01-001 | :-) |
> True |
> >
>
> +--------------------------------------+--------------------+-----------+-------+----------------+
> >
> > Network namespaces are created as well:
> >
> > root at net01-001:/etc/neutron/plugins/openvswitch# ip netns
> > qrouter-33eb1c85-432f-4470-9d69-81ab09fbee28
> > qdhcp-73dfbc17-09ea-4201-8dd8-e82038c4fd5f
> >
> > I can ping from qdhcp namespace the IP of router in qrouter, so those
> namespace can see each other.
> >
> > When I spin up a VM, i see that DHCPREQUEST packets are leaving
> compute node, hit the eth physical interface of network node - but never
> get down to br-tun device. I figured all that with tcpdump.
> >
> > • Also, on network node I don’t see bridges:
> > root at net01-001:/etc/neutron/plugins/openvswitch# brctl show
> > bridge name bridge id STP enabled interfaces
> >
> > Should they be there?
> >
> > • Also, for GRE tunnels the speed rates are weird:
> >
> > # ovs-ofctl show br-tun
> > OFPT_FEATURES_REPLY (xid=0x2): dpid:0000ce0987a95746
> > n_tables:254, n_buffers:256
> > capabilities: FLOW_STATS TABLE_STATS PORT_STATS QUEUE_STATS ARP_MATCH_IP
> > actions: OUTPUT SET_VLAN_VID SET_VLAN_PCP STRIP_VLAN SET_DL_SRC
> SET_DL_DST SET_NW_SRC SET_NW_DST SET_NW_TOS SET_TP_SRC SET_TP_DST ENQUEUE
> > 1(patch-int): addr:3e:ac:8c:7d:19:5f
> > config: 0
> > state: 0
> > speed: 0 Mbps now, 0 Mbps max
> > 2(gre-1): addr:ce:6e:63:61:d2:9a
> > config: 0
> > state: 0
> > speed: 0 Mbps now, 0 Mbps max
> > 3(gre-2): addr:76:14:f3:e0:48:3c
> > config: 0
> > state: 0
> > speed: 0 Mbps now, 0 Mbps max
> > 4(gre-3): addr:d6:e3:27:a9:1b:46
> > config: 0
> > state: 0
> > speed: 0 Mbps now, 0 Mbps max
> >
> > • OpenVSwitch ports are the following:
> >
> > root at net01-001:/etc/neutron/plugins/openvswitch# ovs-vsctl show
> > 3db4ec17-7d21-4d4a-b5da-772a14ee819d
> > Bridge br-ex
> > Port br-ex
> > Interface br-ex
> > type: internal
> > Port "eth0"
> > Interface "eth0"
> > Bridge br-int
> > Port br-int
> > Interface br-int
> > type: internal
> > Port patch-tun
> > Interface patch-tun
> > type: patch
> > options: {peer=patch-int}
> > Bridge br-tun
> > Port "gre-2"
> > Interface "gre-2"
> > type: gre
> > options: {in_key=flow, local_ip="91.238.146.15", out_key=flow,
> remote_ip="91.238.146.9"}
> > Port br-tun
> > Interface br-tun
> > type: internal
> > Port patch-int
> > Interface patch-int
> > type: patch
> > options: {peer=patch-tun}
> > Port "gre-1"
> > Interface "gre-1"
> > type: gre
> > options: {in_key=flow, local_ip="91.238.146.15", out_key=flow,
> remote_ip="91.238.146.5"}
> > Port "gre-3"
> > Interface "gre-3"
> > type: gre
> > options: {in_key=flow, local_ip="91.238.146.15", out_key=flow,
> remote_ip="91.238.146.8"}
> > ovs_version: “1.10.2"
> >
> > Is anyone might point me to a solution to this issue?
> >
> > Thanks,
> > NM
> >
> >
> >
> >
> >
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>
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