Hi ,
How about an option for throttling number of max puppet clients being
active - then puppet client time to run has come it registers at the
puppetmaster - and once there is below max allowed active puppet clients
running - puppetmaster initiates the client run (puppet client needs to
have "listen=true" for that to work). Priorities can also be added
easily. This also gives you easy visibility on then running puppet every
X minutes becomes a bottleneck.
This ca be probably done with mcollective - but requires a separate
daemon process to manage the queue waiting puppet clients.
The advanate of separate daemon is that it can have a view of more than
one puppetmaster.
The disadvantage is that puppet clients can still connect directly
puppetmaster avoiding the queue altogether.
So it looks like a builtin puppet queue functionality is a better choice.
wdyt?
Alex
On 11/05/2011 06:42 PM, Nigel Kersten wrote:
On Thu, Nov 3, 2011 at 12:41 PM, Jo Rhett <jrh...@netconsonance.com
<mailto:jrh...@netconsonance.com>> wrote:
Nigel, As you've said, the time chosen for the run cycle will be
consistent. All of these settings are already set -- this isn't a
question of how to change how often to run, it's how to affect the
chosen runtime?
I've got an awful lot of systems (> 100) which have decided to all
roll at 28 and 58 minutes after the hour. How can I rebalance them?
This should be what the splay settings do for you Jo.
Even though those agents all roll at 28/58 minutes past the hour, if
you set splay to true, they'll then wait a random amount of time up to
"splaylimit" before they *actually* perform the run.
The default setting for "splay" is off, so you won't see this behavior
unless you explicitly turn it on.
Does that make more sense?
On Nov 3, 2011, at 8:38 AM, Nigel Kersten wrote:
On Thu, Nov 3, 2011 at 8:36 AM, Jo Rhett
<jrh...@netconsonance.com <mailto:jrh...@netconsonance.com>> wrote:
For a long time it appeared that run cycles were fairly
balanced -- a few every 30 seconds over the 30 minute period.
Right now I'm seeing more than 100 systems hit in the same
minute: 28 and 58 minutes after the hour. Is there some way
to alter the spread of these systems back to even out the load?
Or passenger options which could limit the effects of this?
In your puppet.conf agent block:
# How often puppet agent applies the client configuration; in
seconds.
# Note that a runinterval of 0 means "run continuously"
rather than
# "never run." If you want puppet agent to never run, you
should start
# it with the `--no-client` option.
# The default value is '1800'.
runinterval = 1800
...
# The maximum time to delay before runs. Defaults to being
the same as the
# run interval.
# The default value is '$runinterval'.
splaylimit = 1800
...
# Whether to sleep for a pseudo-random (but consistent)
amount of time before
# a run.
splay = false
--
Jo Rhett
Net Consonance : consonant endings by net philanthropy, open
source and other randomness
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