We've got quite a few puppet nodes now (50-60, and increasing), and some
have quite large catalogues. I've noticed that sometimes too many nodes
attempt to check in at once that their puppet runs will time out or fail
for other reasons.
Certainly if I kick off all nodes simultaneously using clusterssh then
they will all fail.
The load average on the Puppetmaster is <1 and it has plenty of memory.
The server that provides PuppetDB has a very low load average too and
does not appear to be limited by resources, however we have no
visibility of the Postgres backend, which is run by a different team who
do not expose their monitoring.
I'd like to know how to increase the number of simultaneous runs the
puppetmaster can handle because as we keep increasing the number of
nodes in our network we wil surely run into problems.
Cheers,
Jonathan
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