What about setting the state of the service based on clock time ?
It would depend on how often puppet runs.
The cron suggestion would complement this in a nice "belt-and-suspenders"
solution.
“Sometimes I think the surest sign that intelligent life exists elsewhere in the
universe is that none of it has tried to contact us.” (Bill Waterson: Calvin &
Hobbes)
On Apr 09, 2015, at 03:12 PM, Gabriel Filion <gabs...@lelutin.ca> wrote:
On 09/04/15 02:01 AM, Peter Bukowinski wrote:
On Apr 9, 2015, at 1:26 AM, Gabriel Filion <gabs...@lelutin.ca> wrote:
A client of mine needs to be able to control which hours during the day
a certain daemon is running and which hours it is not.
So far I can think of hiera for controlling the on/off periods + some
math magic to determine in the puppet manifests whether we are currently
in the On or Off period (which would ensure either "running" or "stopped").
This seems like an overly-complex approach.
right
The other option could be a custom fact (which would make manifests less
complicated), but I'm unsure of how control over the on/off time periods
could be achieved in this case.
Am I more or less on to something with the above or am I trying to do
something with the wrong tool? One of the downsides of using puppet is
that runs are only once per hour (in that case) so the starting and
stopping times might be unreliable :\
Puppet is really good at managing steady states. Why not have puppet manage
cron entries responsible for starting and stopping the daemon? A custom fact
could be used to return the current on/off state (accurate as of the last
puppet run, or course) of the daemon for auditing purposes.
ah yes, I actually had thought about this but forgot to mention it. this
would be actually more reliable time-wise.
my only concern would then be if the service crashes during the "on"
period or gets started by someone for any reason in the "off" period and
forgotten there. puppet would add a safety net by ensuring the service's
state.. I'll have to verify if this can be possible and/or a concern
before I try to fix this part.
thanks for the input.
--
Gabriel Filion
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