[Haskell-cafe] Project idea, seeking feedback

[Ben Kolera]

Don't forget http://zipkin.io/ . It's awesome. :)

Cheers,
Ben

On Thu, 16 Nov 2017 at 08:46 Alex <alex at centromere.net> wrote:

> On Wed, 15 Nov 2017 15:30:37 +0100
> MarLinn <monkleyon at gmail.com> wrote:
>
> > Hi Alex,
> >
> > sounds ambitious. But you might be able to reduce the scope massively
> > by relying on existing tools.
> >
>
> Yes! I do not wish to reinvent the wheel.
>
> > Examples:
> >
> >   *
> >
> >     Let something like Nagios do the monitoring. I know there's tools
> > to control Nagios from Haskell. What I don't know is how up-to-date
> >     they are, and I haven't seen something that reports internal
> >     performance data of a Haskell app to Nagios, but that should be
> >     simple if necessary.
> >
>
> I don't think Nagios is a good fit because I want to do more than
> monitor the performance of the interpreter. I want to rely on that
> performance data so that I can use resources more effectively. For
> example, I want to know what the load average of a particular node is,
> and then I want to rely on historical performance data of the DSL
> primitives to determine if the next instruction to be executed should
> be scheduled to run on that node or a different one.
>
> >   *
> >
> >     Let something like Cassandra handle both the heaviest parts of
> >     messaging between your node controllers and the storage of their
> >     config data. If you base your WUI on top of the DB, you can
> > separate it from the controllers as well.
> >
> >   *
> >
> >     Coordination of resources is a variant of scheduling, which is a
> >     ""solved"" problem. So there should be libraries you can use.
> >
>
> For cluster coordination/configuration I was thinking of using Consul.
>
> >   *
> >
> >     Logging has been worked on by many a commercial Haskeller. My
> > guess is that filtering is just a matter of looking at one of the
> >     libraries from the right angle.
> >
>
> I intend to leverage existing libraries where possible. I want to
> create an environment in which the commercial Haskeller never has to
> choose and wire in a logging library. The decision is already made by
> the framework. They just need to insert logging statements where
> appropriate.
>
> > Or just use Kubernetes. Whichever is easier. ;)
> >
>
> Kubernetes is a great tool, but it doesn't do what I envision.
>
> --
> Alex
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