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[Rdo-list] port qg-xxxxxx of external gateway goes to br-int instead of br-eth2



Hello guys,

I'm trying to add a second external network to my openstack. I followed the documentation, created a new router and set the new gateway. I can't ping my external gateway from my router namespace  and I can ping this gateway from my server.

I kept comparing the configuration of my new external gateway (which doesn't work in neutron) and my oldest one (which keeps working) and noticed that when I set a gateway to my router this creates a port with a name that bigins with qg. Normally this port has to be assigned to the external bridge (in my case it should be the new external bridge br-eth2). BUT what I saw is that this port qg-xxx is mapped instead to the br-int.

For more explanation please see my confs and some command outputs:


[root OScontroller templates(keystone_admin)]# neutron net-external-list
+--------------------------------------+-------------------+------------------------------------------------------+
| id                                   | name              | subnets                                              |
+--------------------------------------+-------------------+------------------------------------------------------+
| 59c6f54f-26e3-4360-8a05-1a63285c846c | public            | 6744a5b3-1a33-42ae-8ae7-1467ebdc1b13 192.168.5.0/24  |
| 7ee9f199-2c22-42a9-a6af-1b06c2d62a35 | ruckus_management | cba357ee-f9a7-49f3-89e4-9f5d864747cd 192.168.31.0/24 |
+--------------------------------------+-------------------+------------------------------------------------------+







****this router with its gateway are working***

[root OScontroller templates(keystone_admin)]# ip netns exec qrouter-e8243f85-4c56-47bd-a1ee-40724a861dc6 ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
25: qr-2b96e8b6-38: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
    link/ether fa:16:3e:b5:54:4d brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.1/24 brd 10.0.0.255 scope global qr-2b96e8b6-38
       valid_lft forever preferred_lft forever
    inet6 fe80::f816:3eff:feb5:544d/64 scope link
       valid_lft forever preferred_lft forever
26: qr-9e50bd2e-fa: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
    link/ether fa:16:3e:fc:06:9b brd ff:ff:ff:ff:ff:ff
    inet 20.0.0.1/24 brd 20.0.0.255 scope global qr-9e50bd2e-fa
       valid_lft forever preferred_lft forever
    inet6 fe80::f816:3eff:fefc:69b/64 scope link
       valid_lft forever preferred_lft forever
27: qg-cd45a565-0b: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
    link/ether fa:16:3e:20:81:60 brd ff:ff:ff:ff:ff:ff
    inet 192.168.5.100/24 brd 192.168.5.255 scope global qg-cd45a565-0b
       valid_lft forever preferred_lft forever
    inet 192.168.5.101/32 brd 192.168.5.101 scope global qg-cd45a565-0b
       valid_lft forever preferred_lft forever
    inet 192.168.5.103/32 brd 192.168.5.103 scope global qg-cd45a565-0b
       valid_lft forever preferred_lft forever
    inet6 fe80::f816:3eff:fe20:8160/64 scope link
       valid_lft forever preferred_lft forever






************* this is the new router and gateway that I configured and they are not working
[root OScontroller templates(keystone_admin)]# ip netns exec qrouter-b3c51abb-4a14-4af2-ae72-b41e7cba4e84 ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
38: qg-6406f3e3-72: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
    link/ether fa:16:3e:63:48:64 brd ff:ff:ff:ff:ff:ff
    inet 192.168.31.70/24 brd 192.168.31.255 scope global qg-6406f3e3-72
       valid_lft forever preferred_lft forever
    inet6 fe80::f816:3eff:fe63:4864/64 scope link
       valid_lft forever preferred_lft forever




[root OScontroller templates(keystone_admin)]# ovs-vsctl show
9b3e4cc7-6761-483e-a538-1a132734d1a5
    Bridge br-tun
        Port br-tun
            Interface br-tun
                type: internal
        Port "vxlan-c0a80523"
            Interface "vxlan-c0a80523"
                type: vxlan
                options: {df_default="true", in_key=flow, local_ip="192.168.5.34", out_key=flow, remote_ip="192.168.5.35"}
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
    Bridge "br-eth2"
        Port "phy-br-eth2"
            Interface "phy-br-eth2"
                type: patch
                options: {peer="int-br-eth2"}
        Port "eth2"
            Interface "eth2"
        Port "br-eth2"
            Interface "br-eth2"
                type: internal
    Bridge br-int
        fail_mode: secure
        Port "qr-9e50bd2e-fa"
            tag: 1
            Interface "qr-9e50bd2e-fa"
                type: internal
        Port "tap61f76964-85"
            tag: 1
            Interface "tap61f76964-85"
                type: internal
        Port "qvo0952a802-99"
            tag: 2
            Interface "qvo0952a802-99"
        Port "qvo5cc221dc-e8"
            tag: 1
            Interface "qvo5cc221dc-e8"
        Port "tap599b2f77-21"
            tag: 4095
            Interface "tap599b2f77-21"
                type: internal
        Port "tapa383b7ae-99"
            tag: 2
            Interface "tapa383b7ae-99"
                type: internal
        Port "tapbea1a763-0b"
            tag: 2
            Interface "tapbea1a763-0b"
                type: internal
        Port "qr-2b96e8b6-38"
            tag: 2
            Interface "qr-2b96e8b6-38"
                type: internal
        Port int-br-ex
            Interface int-br-ex
                type: patch
                options: {peer=phy-br-ex}
        Port "qg-6406f3e3-72"
            tag: 9
            Interface "qg-6406f3e3-72"
                type: internal
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
        Port "int-br-eth2"
            Interface "int-br-eth2"
                type: patch
                options: {peer="phy-br-eth2"}
        Port br-int
            Interface br-int
                type: internal
    Bridge br-ex
        Port "qg-cd45a565-0b"
            Interface "qg-cd45a565-0b"
                type: internal
        Port br-ex
            Interface br-ex
                type: internal
        Port "eth0"
            Interface "eth0"
        Port phy-br-ex
            Interface phy-br-ex
                type: patch
                options: {peer=int-br-ex}
    ovs_version: "2.3.1"
[root OScontroller templates(keystone_admin)]#



************************fichiers de conf*********************

[root OScontroller neutron]#  cat l3_agent.ini | grep -v ^# | grep -v ^$
[DEFAULT]
debug = False
interface_driver =neutron.agent.linux.
interface.OVSInterfaceDriver
use_namespaces = True
gateway_external_network_id =
handle_internal_only_routers = True
external_network_bridge =
metadata_port = 9697
send_arp_for_ha = 3
periodic_interval = 40
periodic_fuzzy_delay = 5
enable_metadata_proxy = True
router_delete_namespaces = False
agent_mode = legacy
allow_automatic_l3agent_failover=False



root OScontroller neutron]# cat plugin.ini | grep -v ^# | grep -v ^$
[ml2]
type_drivers = vxlan
tenant_network_types = vxlan
mechanism_drivers =openvswitch
[ml2_type_flat]
[ml2_type_vlan]
[ml2_type_gre]
[ml2_type_vxlan]
vni_ranges =10:100
vxlan_group =224.0.0.1
[securitygroup]
enable_security_group = True


[root OScontroller openvswitch]# cat ovs_neutron_plugin.ini | grep -v ^# | grep -v ^$
[ovs]
enable_tunneling = True
integration_bridge = br-int
tunnel_bridge = br-tun
local_ip =192.168.5.34
network_vlan_ranges = physnet1,physnet2
bridge_mappings =physnet1:br-ex,physnet2:br-eth2
[agent]
polling_interval = 2
tunnel_types =vxlan
vxlan_udp_port =4789
l2_population = False
arp_responder = False
enable_distributed_routing = False
[securitygroup]
firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver


[root OScontroller network-scripts]# cat ifcfg-eth0
NAME=eth0
UUID=1b3a9854-df55-43cf-a9b8-21c1a9cc1e5b
DEVICE=eth0
HWADDR=44:1e:a1:75:ea:d6
DEVICETYPE=ovs
OVS_BRIDGE=br-ex
>TYPE=OVSPort
NM_CONTROLLED=yes


[root OScontroller network-scripts]# cat ifcfg-eth2
NAME=eth2
DEVICE=eth2
HWADDR=44:1e:a1:75:ea:d2
DEVICETYPE=ovs
OVS_BRIDGE=br-eth2
>TYPE=OVSPort
NM_CONTROLLED=yes


[root OScontroller network-scripts]# cat ifcfg-br-eth2
DEVICE=br-eth2
DEVICETYPE=ovs
TYPE=OVSBridge
BOOTPROTO=static
IPADDR=192.168.31.34
NETMASK=255.255.255.0
>GATEWAY=192.168.31.1
DNS1=8.8.8.8


[root OScontroller network-scripts]# cat ifcfg-br-ex
DEVICE=br-ex
DEVICETYPE=ovs
TYPE=OVSBridge
BOOTPROTO=static
IPADDR=192.168.5.34
NETMASK=255.255.255.0
>GATEWAY=192.168.5.1
DNS1=8.8.8.8
DNS2=192.168.5.1


Thank you for your help,
Sara




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