Open Stack

Is SSH the only protocol failing? Have you checked MTU size in your
infrastructure?

Regards
Diego

 --
Diego Parrilla
<http://www.stackops.com/>*CEO*
*www.stackops.com <http://www.stackops.com/> | * diego.parrilla at stackops.com |
+34 91 005-2164 | skype:diegoparrilla




On Tue, May 20, 2014 at 6:02 PM, Martinx - ジェームズ
<thiagocmartinsc at gmail.com>wrote:

> 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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>>
>
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