Open Stack

Hi Nikita:

Thank you for the very prompt response.

I have tried with both the auto-generated Sahara security group as
well as a custom security group that explicitly allows all TCP and
ICMP traffic on all ports in both directions. Still no success: I get
the same SSH banner error. (although as always, using ip netns ...
manually will succeed).

I am running Sahara 3.0.1-4 on a Red Hat 7 host running RHEL Openstack
8 / Liberty. I believe this version of Sahara is somewhat out of date,
but this is what Red Hat and my operations team provide me.  This
link: http://pastebin.com/Y5qigucq has a list of Python packages
installed on my system that Sahara depends on.

Again, thank you very much for your help.

Best,
Jeremy

On Wed, Jul 20, 2016 at 11:32 AM, Nikita Konovalov
<nkonovalov at mirantis.com> wrote:
> Hi, Jeremy.
>
> It looks like there might be a problem in instance to instance
> communication. Could you please check that the tcp traffic between instances
> is not blocked. Especially on port 22.
>
> Could you also send witch version of Sahara do you have and what versions of
> python dependencies are installed in your system.
>
> On Wed, Jul 20, 2016 at 6:20 PM, Jeremy Freudberg <jfreud at bu.edu> wrote:
>>
>> Hi all, I'm having an issue with Sahara accessing its instances. This
>> is over private IP, not public/floating. I have use_floating_ips =
>> false and use_namespaces = true in sahara.conf. My setup also uses
>> Neutron, so use_neutron = true as well.
>>
>> Here is an excerpt from the logs:
>>
>> DEBUG sahara.utils.ssh_remote
>> [req-ad9e16b1-176b-4283-92ea-e2032928e3a0 ] [instance:
>> f2145fd1-fa9e-4d45-9d61-653bb6d6dd6d, cluster:
>> 6493dfa9-4875-4844-abd4-d425b3312ee4] Returning neutron info: {'host':
>> u'192.168.201.23', 'tenant': u'jfreud at bu.edu', 'network':
>> u'433d83c0-1f7f-4fb7-b4a1-995b47344ac4'} get_neutron_info
>> /usr/lib/python2.7/site-packages/sahara/utils/ssh_remote.py:581
>>
>> DEBUG sahara.service.engine [req-ad9e16b1-176b-4283-92ea-e2032928e3a0
>> ] [instance: f2145fd1-fa9e-4d45-9d61-653bb6d6dd6d, cluster:
>> 6493dfa9-4875-4844-abd4-d425b3312ee4] Can't login to node, IP:
>> 192.168.201.23, reason SSHException: Error reading SSH protocol banner
>>
>> We would think this to be a networking issue, right? (Or maybe an SSH
>> issue...) However, when I perform the SSH command manually, I can
>> connect to my instances:
>>
>> ip netns exec qdhcp-433d83c0-1f7f-4fb7-b4a1-995b47344ac4 ssh -i
>> /path/to/private/key ubuntu at 192.168.201.23
>>
>> The above command executes successfully and SSH connects.
>>
>> Any help is greatly appreciated.
>>
>> Thanks,
>> Jeremy Freudberg
>>
>> _______________________________________________
>> Mailing list:
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>> Post to     : openstack at lists.openstack.org
>> Unsubscribe :
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>
>
>
>
> --
> Best Regards,
> Nikita Konovalov
> Mirantis, Inc