I'll check out the library and the fdqn_rotate function.
Thanks.
On Wednesday, October 10, 2012 12:55:21 PM UTC-7, jcbollinger wrote:
On Wednesday, October 10, 2012 11:10:32 AM UTC-5, trevman wrote:
I'm looking for a way to balance out services when insuring the content
of configuration files.
Example is how to do this with /etc/yp.conf:
##
domain example.com server 192.168.1.2
domain example.com server 192.168.1.3
domain example.com server 192.168.1.4
##
I'd like to *change the order of the entries *in a random or rotating
fashion so that multiple machines would get a *different *order so that
we can scale the services without having to invest in a load balancer.
Obviously, we wouldn't want the contents to continually change on every
machine, so the tests would need to be appropriate.
Any ideas?
There are lots of ways you could do this, but the the ready-built
fqdn_rotate() function in Puppetlabs's add-in stdlib module (
https://github.com/puppetlabs/puppetlabs-stdlib) would probably serve as
a good foundation. Put the NIS server IPs in an array, shuffle it with
fqdn_rand(), and read the results out into your yp.conf template. Each
node will have a consistent order as long as its FQDN does not change.
John
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