Re: [dpdk-dev] DPDK Telemetry library enhancement

[Jerin Jacob <jerinjacobk@gmail.com>]

On Wed, May 5, 2021 at 3:31 PM Bruce Richardson
<bruce.richardson@intel.com> wrote:
>
> On Wed, May 05, 2021 at 03:07:02PM +0530, Jerin Jacob wrote:
> > On Wed, May 5, 2021 at 2:13 PM Thomas Monjalon <thomas@monjalon.net> wrote:
> > >
> > > 05/05/2021 09:49, Harman Kalra:
> > > > Hi All,
> > > >
> > > > We have a use case where we need to gather statistics over network. Current implementation of telemetry library is based on Unix socket, we would like to enhance the scope of library to use network sockets. We understand security challenges with network sockets, to overcome them can we can think of two steps:
> > > > 1. By default library will be using Unix sockets, it will be user decision to run library with network sockets by passing respective eal flags.
> > > > 2. We can introduce some key/password authentication mechanism to the library, where only authorized clients can get connected to the server. Password can be passed by the user as eal flags, something similar to vf token which is uuid based.
> > > > Kindly provide us suggestions/challenges over this enhancements.
> > >
> > > Not sure it should be part of the telemetry lib.
> > > In any case, when implementing network communication,
> > > I encourage you to look at ZeroMQ.
> >
> > ZeroMQ is a good option for Transport to hide the underlying transport
> > variants like In-process, Intra-process, TCP.
> > Also, it has various different options for security backend like
> > http://curvezmq.org/
> >
>
> Sounds reasonable - I'm in favour of any scheme that means that we don't
> need to implement out own authentication or security mechanisms for this.
>
> > if we pick ZeroMQ for transport then it will translate to
> >
> > 1) Remove unix file socket from telemetry
> > 2) Use ZeroMQ for local and remote messaging
> > 3) Needs to make telemetry or dpdk depends on ZeroMQ library(Since
> > telemetry is experimental, I hope, we can change this)
> >
> > Thoughts from others including telemetry maintainers
> >
> I'd like to keep the existing Unix socket around, as well as any extra
> zeromq interface, rather than replacing one with the other. Then rather

I think, the purpose of zeromq is to unify the different transport
mechanisms to avoid multiple code
path for different transport.IMHO, at some point in time it needs to unify.


> than introducing a hard dependency on zeromq, it can be an optional one,
> where support is compiled in if available. There may be monitoring
> applications such as collectd, which run their own local monitoring process
> and for which the local unix interface may be as good.

Collectd has zeromq plugin for transport[1]. So, I think, we can meet
that use case too with zeromq

[1]
https://collectd.org/wiki/index.php/Plugin:ZeroMQ


>
> /Bruce