gfa
Jul 30, 2013, 1:08 PM
Post #1 of 1
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problem with quantum, gre and ovs
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hello
i feel sorry i have to ask silly questions, but i ran out of ideas.
i'm running grizzly on 3, physical, nodes. 8 (domU) nodes are cloud
controllers, those nodes run (in a failover configuration using
pacemaker) most
of the services needed to run an openstack cloud.
the other node (is just 1 by now, but will be more of them) is the
compute node. to make things simple i configured it as kvm
i'm using ovs plugin with gre to deliver connectivity from controlled
node to compute node.
what i'm seeing is dhcp request packets reaching the dhcp server
interface, and the dhcp reply pkts.
dhcp reply pkts reach up to physical interface on the compute node
but they don't appear on br-tun on the compute node, neither on br-int
i've tested configuring all ovs switches to a controller where i had
setup a hub-like flow policy (i know is no optimal, but i'm a noob on
openflow) but results were the same.
if i set the ip addr manually on the vm i cannot ping dhcp server or
router, even if i add their mac addr to arp table. vm can ping btw them
(so is not br-int on compute node to blame)
any ideas?
thanks!
ovs-vsctl show on compute node
5db7aef3-414a-45a4-af3f-0ae2aea2602b
Bridge br-int
Port "qvoca28289c-5a"
tag: 4
Interface "qvoca28289c-5a"
Port br-int
Interface br-int
type: internal
Port patch-tun
Interface patch-tun
type: patch
options: {peer=patch-int}
Port "qvo6e51a433-64"
tag: 4
Interface "qvo6e51a433-64"
Port "qvo2c6a9e59-78"
tag: 4
Interface "qvo2c6a9e59-78"
Port "qvo7c8804e8-3f"
tag: 4
Interface "qvo7c8804e8-3f"
Port "qvo995dfe81-de"
tag: 4
Interface "qvo995dfe81-de"
Bridge br-tun
Port "gre-1"
Interface "gre-1"
type: gre
options: {in_key=flow, out_key=flow,
remote_ip="xxx.xxx.10.41"}
Port br-tun
Interface br-tun
type: internal
Port patch-int
Interface patch-int
type: patch
options: {peer=patch-tun}
ovs_version: "1.9.0"
ovs-vsctl show on node (domU) witch run all quantum services
Port br-int
Interface br-int
type: internal
Port patch-tun
Interface patch-tun
type: patch
options: {peer=patch-int}
Port "tap5838ba69-d8"
tag: 1
Interface "tap5838ba69-d8"
Bridge br-ex
Port "eth2"
Interface "eth2"
Port br-ex
Interface br-ex
type: internal
Bridge br-tun
Port patch-int
Interface patch-int
type: patch
options: {peer=patch-tun}
Port "gre-2"
Interface "gre-2"
type: gre
options: {in_key=flow, out_key=flow,
remote_ip="xxx.xxx.10.141"}
Port br-tun
Interface br-tun
type: internal
ovs_version: "1.9.0"
ovs_quantum_plugin.ini
[DATABASE]
sql_connection =
postgresql://quantumpluginopenvswitchdb:xxx [at] xxx/quantumpluginopenvswitchdb
reconnect_interval = 2
[OVS]
tenant_network_type = gre
enable_tunneling = True
tunnel_id_ranges = 10:1000
local_ip = xxx.xxx.10.41
[AGENT]
polling_interval = 5
root_helper = sudo /usr/bin/quantum-rootwrap /etc/quantum/rootwrap.conf
[SECURITYGROUP]
firewall_driver =
quantum.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
quantum.conf
[DEFAULT]
verbose = True
sql_connection =
postgresql://quantumpluginopenvswitchdb:xxx [at] xxx/quantumpluginopenvswitch
lock_path = $state_path/lock
bind_host = 0.0.0.0
bind_port = 9696
core_plugin =
quantum.plugins.openvswitch.ovs_quantum_plugin.OVSQuantumPluginV2
api_paste_config = /etc/quantum/api-paste.ini
control_exchange = quantum
rabbit_host=xxx.xxx.10.45
notification_driver = quantum.openstack.common.notifier.rabbit_notifier
default_notification_level = INFO
notification_topics = notifications
[QUOTAS]
[DEFAULT_SERVICETYPE]
[AGENT]
root_helper = sudo quantum-rootwrap /etc/quantum/rootwrap.conf
[keystone_authtoken]
auth_host = xxx.xxx.10.24
auth_port = 35357
auth_protocol = http
admin_tenant_name = servicios
admin_user = quantum
admin_password = xxxxxx
signing_dir = /var/lib/quantum/keystone-signing
tcpdump -i eth0 -p ip proto gre on compute node
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
17:05:45.988893 IP kvm02 > xxx.xxx.10.41: GREv0, key=0xa, length 82: IP6
fe80::98e3:ceff:fe5d:9e1c > ip6-allrouters: ICMP6, router solicitation,
length 16
17:05:46.160915 IP kvm02 > xxx.xxx.10.41: GREv0, key=0xa, length 82: IP6
fe80::5042:93ff:fe5f:c24e > ip6-allrouters: ICMP6, router solicitation,
length 16
17:05:47.496954 IP kvm02 > xxx.xxx.10.41: GREv0, key=0xa, length 102:
IP6 fe80::98e3:ceff:fe5d:9e1c > ff02::16: HBH ICMP6, multicast listener
report v2, 1 group record(s), length 28
17:05:47.864548 IP kvm02 > xxx.xxx.10.41: GREv0, key=0xa, length 354: IP
0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from
fa:16:3e:f2:7a:9f (oui Unknown), length 300
17:05:47.865444 IP xxx.xxx.10.38 > kvm02: GREv0, key=0xa, length 354: IP
172.16.99.7.bootps > 172.16.99.6.bootpc: BOOTP/DHCP, Reply, length 300
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