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Davanum,

Can we also use SIGHUP signal tool instead of for these restarts?

Regards,
Sergey.

On 22 June 2015 at 13:12, Davanum Srinivas <davanum at gmail.com> wrote:

> Michał,
>
> we are adding that reread config to oslo.service, there's a test
> version on pypi 0.1.0 (API not yet stable) that you can try and see if
> it works for you.
>
> thanks,
> dims
>
> On Mon, Jun 22, 2015 at 5:40 AM, Jastrzebski, Michal
> <michal.jastrzebski at intel.com> wrote:
> > Hello,
> >
> > I wanted to start discussion about versioned objects backporting for
> conductor-less projects.
> > In Vancouver we discussed compatibility mode, which works like that:
> >
> > 1. We define one version for every object we use, this means adding base
> object, for example:
> >
> > Class HeatObject:
> >         VERSION=1.5
> >
> > All objects inherit from this one, each time we change it, we bump up
> this variable.
> >
> > 2. We introduce new config option in heat.conf
> >
> > Combatibility_mode = 1.4
> >
> > 3. Implement mechanism which will automatically backport each outgoing
> message to 1.4 as long as we have this var.
> >
> > Upgrade flow looks like that:
> > 1. We have all nodes using 1.4 version
> > 2. We incrementally run new version with 1.4 compatibility mode
> > 3. When all nodes are already up-to-date, we incrementally turn off
> compatibility mode
> >
> > This solution has one rather big disadvantage: 2 restarts.
> > This can be mitigated by adding another call to reread config without
> restart. Oslo.config has this capability, but we need to add call to run it.
> >
> > Thoughts?
> >
> > Regards,
> > Michał Jastrzębski
> >
> >
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>
> --
> Davanum Srinivas :: https://twitter.com/dims
>
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