Open Stack

Thanks Ganesh!

I did not know about this tool.
I also quite like the network visualization bits, though I wonder how
practical that would be when one debugs very large deployments.

I think it won't be a bad idea to list these tools in the networking guide
or in neutron's devref, or both.

Salvatore

On 22 September 2015 at 04:25, Ganesh Narayanan (ganeshna) <
ganeshna at cisco.com> wrote:

> Another project for diagnosing OVS in Neutron:
>
> https://github.com/CiscoSystems/don
>
> Thanks,
> Ganesh
>
> From: Salvatore Orlando <salv.orlando at gmail.com>
> Reply-To: OpenStack Development Mailing List <
> openstack-dev at lists.openstack.org>
> Date: Monday, 21 September 2015 2:55 pm
> To: OpenStack Development Mailing List <openstack-dev at lists.openstack.org>
> Subject: Re: [openstack-dev] [neutron] Neutron debugging tool
>
> It sounds like indeed that easyOVS covers what you're aiming too.
> However, from what I gather there is still plenty to do in easy OVS, so
> perhaps rather than starting a new toolset from scratch you might build on
> the existing one.
>
> Personally I'd welcome its adoption into the Neutron stadium as debugging
> control plane/data plane issues in the neutron reference impl is becoming
> difficult also for expert users and developers.
> I'd just suggest renaming it because calling it "OVS" is just plain wrong.
> The neutron reference implementation and OVS are two distinct things.
>
> As concern neutron-debug, this is a tool that was developed in the early
> stages of the project to verify connectivity using "probes" in namespaces.
> These probes are simply tap interfaces associated with neutron ports. The
> neutron-debug tool is still used in some devstack exercises. Nevertheless,
> I'd rather keep building something like easyOVS and then deprecated
> neutron-debug rather than develop it.
>
> Salvatore
>
>
> On 21 September 2015 at 02:40, Li Ma <skywalker.nick at gmail.com> wrote:
>
>> AFAIK, there is a project available in the github that does the same
>> thing.
>> https://github.com/yeasy/easyOVS
>>
>> I used it before.
>>
>> On Mon, Sep 21, 2015 at 12:17 AM, Nodir Kodirov <nodir.qodirov at gmail.com>
>> wrote:
>> > Hello,
>> >
>> > I am planning to develop a tool for network debugging. Initially, it
>> > will handle DVR case, which can also be extended to other too. Based
>> > on my OpenStack deployment/operations experience, I am planning to
>> > handle common pitfalls/misconfigurations, such as:
>> > 1) check external gateway validity
>> > 2) check if appropriate qrouter/qdhcp/fip namespaces are created in
>> > compute/network hosts
>> > 3) execute probing commands inside namespaces, to verify reachability
>> > 4) etc.
>> >
>> > I came across neutron-debug [1], which mostly focuses on namespace
>> > debugging. Its coverage is limited to OpenStack, while I am planning
>> > to cover compute/network nodes as well. In my experience, I had to ssh
>> > to the host(s) to accurately diagnose the failure (e.g., 1, 2 cases
>> > above). The tool I am considering will handle these, given the host
>> > credentials.
>> >
>> > I'd like get community's feedback on utility of such debugging tool.
>> > Do people use neutron-debug on their OpenStack environment? Does the
>> > tool I am planning to develop with complete diagnosis coverage sound
>> > useful? Anyone is interested to join the development? All feedback are
>> > welcome.
>> >
>> > Thanks,
>> >
>> > - Nodir
>> >
>> > [1]
>> http://docs.openstack.org/cli-reference/content/neutron-debug_commands.html
>> >
>> >
>> __________________________________________________________________________
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>>
>>
>>
>> --
>>
>> Li Ma (Nick)
>> Email: skywalker.nick at gmail.com
>>
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>
>
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