Open Stack

Apparently we're all facing the same issue. The fact is, Neutron is too
much complex...

Back with Havana, we faced this:
https://bugs.launchpad.net/neutron/+bug/1252900

But now, with Ubuntu 14.04 + IceHouse, seems to be a different problem.

"Neutron + GRE or VXLAN", is very hard to stabilize and doesn't scale very
well...

I'm seeing that it works better with "VLAN / Flat Networks" (i.e. without
using the Neutron Network Node as Instance's default gateway). I'll try it
instead...

Maybe James Denton, from Rackspace, might help us again!     :-P

Best!
Thiago


On 20 May 2014 11:21, Jason Bishop <jason.bishop at gmail.com> wrote:

>
> that happened to me too.  maybe same root cause?
>
> see http://ubuntuforums.org/showthread.php?t=2223789
>
> cheers
> jason
>
>
>
> On Mon, May 19, 2014 at 10:59 PM, Martinx - ジェームズ <
> thiagocmartinsc at gmail.com> wrote:
>
>> I managed to login into a Ubuntu Instance via `SPICE Console` and there
>> is more network outages from within it, take a look ("apt-get update" froze
>> too):
>>
>> --
>> http://i.imgur.com/IeEXIjR.png
>> --
>>
>> Am I missing something?!
>>
>>
>> On 20 May 2014 02:47, Martinx - ジェームズ <thiagocmartinsc at gmail.com> wrote:
>>
>>> Hey Stackers!
>>>
>>> I'm facing a weird network issue here, with *IceHouse* and *Neutron L3*...
>>> Using "Per-Project Router with Private Networks"...
>>>
>>> I am unable to connect via SSH into an Instance, from its own "Project
>>> Namespace Router", look:
>>>
>>> --
>>> root at net-controller-1:~# ip netns exec
>>> qrouter-c252886a-1fd0-45dd-9e3b-4233786e7960 ssh -i ~/pem
>>> ubuntu at 192.168.1.17 -v
>>> OpenSSH_6.6.1, OpenSSL 1.0.1f 6 Jan 2014
>>> debug1: Reading configuration data /etc/ssh/ssh_config
>>> debug1: /etc/ssh/ssh_config line 19: Applying options for *
>>> debug1: Connecting to 192.168.1.17 [192.168.1.17] port 22.
>>> debug1: Connection established.
>>> debug1: permanently_set_uid: 0/0
>>> debug1: identity file /root/pem type -1
>>> debug1: identity file /root/pem-cert type -1
>>> debug1: Enabling compatibility mode for protocol 2.0
>>> debug1: Local version string SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2
>>> debug1: Remote protocol version 2.0, remote software version
>>> OpenSSH_6.6p1 Ubuntu-2ubuntu1
>>> debug1: match: OpenSSH_6.6p1 Ubuntu-2ubuntu1 pat
>>> OpenSSH_6.5*,OpenSSH_6.6* compat 0x14000000
>>> debug1: SSH2_MSG_KEXINIT sent
>>> ...
>>> ...
>>> ...ssh stucked!!!
>>> ...
>>> --
>>>
>>> The SSH connection froze at "debug1: SSH2_MSG_KEXINIT sent" and it
>>> never establishes...
>>>
>>> From its attached `Floating IP`, the symptom is the same, I can't
>>> connect via SSH into a Instance, I tried it with 12.04 and 14.04, same
>>> result for both...
>>>
>>> The Instance looks good from SPICE Consoles (but I need to login with
>>> "ubuntu user" via network first, using ssh key).
>>>
>>> -
>>>
>>> I'm running tcpdump on both "qr-$INT" and at the Compute Node DATA
>>> NETWORK, to see the GREv0 traffic too, here it is:
>>>
>>> --
>>> root at net-controller-1:~# ip netns exec
>>> qrouter-c252886a-1fd0-45dd-9e3b-4233786e7960 tcpdump -v -ni qr-eeb0d2f3-42
>>>
>>> http://paste.openstack.org/show/80969/
>>>
>>> NOTE: From the line ~16 to 32, SSH was already frozen...
>>> --
>>>
>>> root at compute-node-1:~# tcpdump -ni eth1 | grep -v IP6
>>>
>>> http://paste.openstack.org/show/80970/
>>> --
>>>
>>> What can I do to deep investigate this?!
>>>
>>> I double checked everything, including OVS bridges, sysctl.conf, `ethtool
>>> --offload ethX gro off` and etc... Don't know what's is wrong...
>>>
>>> I think that this is the last problem I'm facing with IceHouse, I would
>>> like to put it into prod but, I am unable to do it right now...   :-/
>>>
>>> Tks in advance!
>>>
>>> Best,
>>> Thiago
>>>
>>
>>
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