Gentle shutdown feature
Rob Riepel
riepel at networking.stanford.edu
Tue Jul 1 20:08:57 UTC 2014
On Jul 1, 2014, at 2:27 AM, Phil Mayers <p.mayers at imperial.ac.uk> wrote:
> On 27/06/14 16:35, John Wobus wrote:
>
>> There are other similar sites that use the same "stop and
>> start frequently" strategy. I would naturally be concerned
>> if the daemons had trouble ever reaching normal state.
>
> Yes, we do this, and I agree.
Same here.
We generate a complete configuration every 10 minutes and restart the server if there are changes (with 1800+ shared networks and 222000+ host entries being updated by 800+ people it’s easier to keep things in sync by creating a new config than doing diffs and using OMAPI).
> It's really peculiar for a standard shutdown signal - INT or TERM - to result in the daemon not coming immediately back into service on the next startup.
>
> Would recommend making it a different signal e.g. USR1 or an OMAPI command.
I suppose it boils down to what is a “standard” restart. We can cope with using “kill -9” to facilitate a quick restart, but it seems wrong to do so. If the consensus is that INT or TERM result in a checks and lengthy restart, it would be good to have a signal or OMAPI command that results in a quick restart.
--
Rob Riepel
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