Open Stack

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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