Jira (PUP-5646) fqdn_rand in real world - only 336 of possible 1440 daily cron slots ever used.

[Eric Thompson (JIRA)]

Title: Message Title

Eric Thompson commented on PUP-5646   Re: fqdn_rand in real world - only 336 of possible 1440 daily cron slots ever used. at master SHA=5b8f627b259686a281ddee395dba0de74e9ef289 i tried many things to get a good distribution test on the new fqdn_rand. i ended up with 1000 individual puppet apply runs doing (each): #$size = range("1","10") # this produces all the same value because, map: #$randos = $size.map |$val| { fqdn_rand(24) * fqdn_rand(60) } # this is skewed by $val in non-deterministic ways #$randos = $size.map |$val| { fqdn_rand(24+$val) * fqdn_rand(60+$val) } #notice($randos) #notice("min: ${min(*$randos)} max: ${max(*$randos)}") # $fqdn doesn't change after run init #$size.each |Integer $val| { file {"/root/random_nums.txt": ensure => present} file_line { "line ${val}": path => '/root/random_nums.txt', line => "${val},${::fqdn},${fqdn_rand(24)}", } exec { "hostname ${val}": command => "/bin/hostname eq2ba5oa6v9gevt${val}.${::facts['networking']['domain']}"} #} this produced a file with content like: 951,eq2ba5oa6v9gevt950.delivery.puppetlabs.net,8 952,eq2ba5oa6v9gevt951.delivery.puppetlabs.net,13 953,eq2ba5oa6v9gevt952.delivery.puppetlabs.net,17 954,eq2ba5oa6v9gevt953.delivery.puppetlabs.net,1 955,eq2ba5oa6v9gevt954.delivery.puppetlabs.net,22 956,eq2ba5oa6v9gevt955.delivery.puppetlabs.net,11 957,eq2ba5oa6v9gevt956.delivery.puppetlabs.net,14 958,eq2ba5oa6v9gevt957.delivery.puppetlabs.net,2 959,eq2ba5oa6v9gevt958.delivery.puppetlabs.net,9 960,eq2ba5oa6v9gevt959.delivery.puppetlabs.net,6 961,eq2ba5oa6v9gevt960.delivery.puppetlabs.net,14 962,eq2ba5oa6v9gevt961.delivery.puppetlabs.net,12 963,eq2ba5oa6v9gevt962.delivery.puppetlabs.net,8 964,eq2ba5oa6v9gevt963.delivery.puppetlabs.net,7 965,eq2ba5oa6v9gevt964.delivery.puppetlabs.net,21 966,eq2ba5oa6v9gevt965.delivery.puppetlabs.net,21 967,eq2ba5oa6v9gevt966.delivery.puppetlabs.net,13 968,eq2ba5oa6v9gevt967.delivery.puppetlabs.net,14 (see attached) i imported this into a spread sheet and got: (fqdn_rand(24)): mean: 11.409 min: 0 stdev: 6.953133471 max: 23 so the distribution is certainly not as thin as before. Add Comment   This message was sent by Atlassian JIRA (v6.4.12#64027-sha1:e3691cc) -- You received this message because you are subscribed to the Google Groups "Puppet Bugs" group. To unsubscribe from this group and stop receiving emails from it, send an email to puppet-bugs+unsubscr...@googlegroups.com. To post to this group, send email to puppet-bugs@googlegroups.com. Visit this group at https://groups.google.com/group/puppet-bugs. For more options, visit https://groups.google.com/d/optout.