Open Stack

OK thanks Julien,

I’m about to go on holiday for a month so I’ll pick this up when I return. One of our devs is playing with this and thinking of ways to support the things currently not implemented/working.

Cheers,
Sam


> On 2 Aug 2016, at 8:35 PM, Julien Danjou <julien at danjou.info> wrote:
> 
> On Tue, Aug 02 2016, Sam Morrison wrote:
> 
> Hi Sam!
> 
>> We have been using gnocchi for a while now with the influxDB driver
>> and are keen to get the influxdb driver back into upstream.
>> 
>> However looking into the code and how it’s arranged it looks like
>> there are a lot of assumptions that the backend storage driver is
>> carbonara based.
> 
> More or less. There is a separation layer (index/storage) and a full
> abstraction layer so it's possible to write a driver for any TSDB.
> Proof, we had an InfluxDB driver.
> Now the separation layer is not optimal for some TSDBs like InfluxDB,
> unfortunately nobody never stepped up to enhance it.
> 
>> Is gnocchi an API for time series DBs or is it a time series DB
>> itself?
> 
> Both. It's an API over TSDBs, and it also has its own TSDB based on
> Carbonara+{Ceph,File,Swift}.
> 
>> The tests that are failing are due to the way carbonara and influx handle the
>> retention and multiple granularities differently. (which we can work around
>> outside of gnocchi for now)
>> 
>> So I guess I’m wondering if there will be support for other drivers apart from carbonara?
> 
> Sure. We dropped the InfluxDB driver because nobody was maintaining it
> and it was not passing the tests anymore. But we'd be glad to have it
> in-tree I'd say.
> 
>> We use influx because we already use it for other stuff within our organisation
>> and don’t want to set up ceph or swift (which is quite an endeavour) to support
>> another time series DB.
> 
> That makes sense. If you don't need scaling, I can only encourage you
> taking a look at using Carbonara+file rather than InfluxDB in the
> future, which I think is still a better choice.
> 
> But in the meantime, feel free to send a patch to include back InfluxDB
> in Gnocchi. As long as you're ready to help us maintain it, we'll all
> open on that. :)
> 
> Cheers,
> -- 
> Julien Danjou
> # Free Software hacker
> # https://julien.danjou.info