[Openstack-operators] While adding external bridge connection lost to the network node

Geo Varghese gvarghese at aqorn.com
Fri Nov 21 12:22:18 UTC 2014


Thanks Britt.

You mean like this right?

cat /etc/network/interfaces
=========================
# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet dhcp

# The external network interface
auto br-ex
iface br-ex inet static
       address 192.168.122.54
       netmask 255.255.255.0
       gateway 192.168.122.1
       dns-nameservers 8.8.8.8 8.8.4.4
==========================================================

On Fri, Nov 21, 2014 at 5:48 PM, Britt Houser (bhouser) <bhouser at cisco.com>
wrote:

>  Correct.  You need to updated your /etc/interfaces file so that the
> 192.168.122.54/24 address gets assigned to br-ex instead of eth0.
>
>   From: Geo Varghese <gvarghese at aqorn.com>
> Date: Friday, November 21, 2014 at 7:16 AM
> To: Britt Houser <bhouser at cisco.com>
> Cc: "openstack at lists.openstack.org" <openstack at lists.openstack.org>, "
> openstack-operators at lists.openstack.org" <
> openstack-operators at lists.openstack.org>
> Subject: Re: [Openstack-operators] While adding external bridge
> connection lost to the network node
>
>   Hi Britt,
>
> Thanks for the answer.
>
> I am using Virtual machine(KVM) for openstack installation. Its a single
> node installation.
>
> Now i can create instance from openstack dahboard and and can login in to
> the instance from dashboard konsole.
>
> But i couln't connect to instance from controller node.
>
> Also i couldn't have connection between instances.
>
> Ifconfig output from openstack installation node
> =======================
> root at ubuntu:/home/geo# ifconfig
> br-int    Link encap:Ethernet  HWaddr 26:73:95:7a:c5:4e
>           inet6 addr: fe80::ec9d:9aff:fe2f:66ab/64 Scope:Link
>           UP BROADCAST RUNNING  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:0 (0.0 B)  TX bytes:648 (648.0 B)
>
> br-tun    Link encap:Ethernet  HWaddr 0e:af:b2:8e:89:44
>           inet6 addr: fe80::c89f:cfff:fe74:712/64 Scope:Link
>           UP BROADCAST RUNNING  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:0 (0.0 B)  TX bytes:648 (648.0 B)
>
> eth0      Link encap:Ethernet  HWaddr 52:54:00:d6:4c:4f
>           inet addr:192.168.122.54  Bcast:192.168.122.255
> Mask:255.255.255.0
>           inet6 addr: fe80::5054:ff:fed6:4c4f/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:162 errors:0 dropped:3 overruns:0 frame:0
>           TX packets:100 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:16187 (16.1 KB)  TX bytes:13445 (13.4 KB)
>
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           inet6 addr: ::1/128 Scope:Host
>           UP LOOPBACK RUNNING  MTU:65536  Metric:1
>           RX packets:737 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:737 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:104803 (104.8 KB)  TX bytes:104803 (104.8 KB)
>
> tap561bdedf-3e Link encap:Ethernet  HWaddr 42:c5:72:1c:3b:99
>           inet6 addr: fe80::40c5:72ff:fe1c:3b99/64 Scope:Link
>           UP BROADCAST RUNNING  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:0 (0.0 B)  TX bytes:648 (648.0 B)
>
> tapde436ec7-3b Link encap:Ethernet  HWaddr b6:09:88:dc:f7:5a
>           inet6 addr: fe80::b409:88ff:fedc:f75a/64 Scope:Link
>           UP BROADCAST RUNNING  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:0 (0.0 B)  TX bytes:648 (648.0 B)
> ======================================
>
>  Same eth0 i have used to add br-ex, you mean thats the issue right?
>
> On Fri, Nov 21, 2014 at 5:31 PM, Britt Houser (bhouser) <bhouser at cisco.com
> > wrote:
>
>>  Was the interface you added to br-ex the same interface to which you
>> connected to the box?  If so, this is expected.  When you add an interface
>> to the bridge you lose IP connectivity to that interface.  The IP address
>> which which was assigned to the interface now needs to be assigned to the
>> br-ex bridge, and then you'll have connectivity once again.
>>
>>  Thx,
>> britt
>>
>>   From: Geo Varghese <gvarghese at aqorn.com>
>> Date: Friday, November 21, 2014 at 1:39 AM
>> To: "openstack at lists.openstack.org" <openstack at lists.openstack.org>, "
>> openstack-operators at lists.openstack.org" <
>> openstack-operators at lists.openstack.org>
>> Subject: [Openstack-operators] While adding external bridge connection
>> lost to the network node
>>
>>   Hi Team,
>>
>> While adding external bridge connection lost to the network node from
>> other nodes. we couldn't ssh to network node after creating bridge.
>>
>> If we do below steps of following link
>> http://docs.openstack.org/icehouse/install-guide/install/apt/content/neutron-ml2-network-node.html
>>
>> ===========================================
>> 3) Add the external bridge:
>>
>> # ovs-vsctl add-br br-ex
>>
>> 4) Add a port to the external bridge that connects to the physical
>> external network interface:
>>
>> Replace INTERFACE_NAME with the actual interface name. For example, eth2
>> or ens256.
>>
>> # ovs-vsctl add-port br-ex INTERFACE_NAME
>> =============================================
>>
>> External connection to network node fails. Then we couldn't connect to network node from other machines.
>>
>> Any one faced this issue?
>>
>> Please help us to fix this issue.
>>
>>
>>  --
>> Regards,
>> Geo Varghese
>>
>
>
>
> --
>  --
> Regards,
> Geo Varghese
>



-- 
--
Regards,
Geo Varghese
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