<div dir="ltr">Davanum,<div><br></div><div>Can we also use SIGHUP signal tool instead of for these restarts?</div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr">Regards,<div>Sergey.</div></div></div></div>
<br><div class="gmail_quote">On 22 June 2015 at 13:12, Davanum Srinivas <span dir="ltr"><<a href="mailto:davanum@gmail.com" target="_blank">davanum@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Michał,<br>
<br>
we are adding that reread config to oslo.service, there's a test<br>
version on pypi 0.1.0 (API not yet stable) that you can try and see if<br>
it works for you.<br>
<br>
thanks,<br>
dims<br>
<div class="HOEnZb"><div class="h5"><br>
On Mon, Jun 22, 2015 at 5:40 AM, Jastrzebski, Michal<br>
<<a href="mailto:michal.jastrzebski@intel.com">michal.jastrzebski@intel.com</a>> wrote:<br>
> Hello,<br>
><br>
> I wanted to start discussion about versioned objects backporting for conductor-less projects.<br>
> In Vancouver we discussed compatibility mode, which works like that:<br>
><br>
> 1. We define one version for every object we use, this means adding base object, for example:<br>
><br>
> Class HeatObject:<br>
> VERSION=1.5<br>
><br>
> All objects inherit from this one, each time we change it, we bump up this variable.<br>
><br>
> 2. We introduce new config option in heat.conf<br>
><br>
> Combatibility_mode = 1.4<br>
><br>
> 3. Implement mechanism which will automatically backport each outgoing message to 1.4 as long as we have this var.<br>
><br>
> Upgrade flow looks like that:<br>
> 1. We have all nodes using 1.4 version<br>
> 2. We incrementally run new version with 1.4 compatibility mode<br>
> 3. When all nodes are already up-to-date, we incrementally turn off compatibility mode<br>
><br>
> This solution has one rather big disadvantage: 2 restarts.<br>
> 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.<br>
><br>
> Thoughts?<br>
><br>
> Regards,<br>
> Michał Jastrzębski<br>
><br>
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<br>
<br>
</div></div><span class="HOEnZb"><font color="#888888">--<br>
Davanum Srinivas :: <a href="https://twitter.com/dims" rel="noreferrer" target="_blank">https://twitter.com/dims</a><br>
</font></span><div class="HOEnZb"><div class="h5"><br>
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