We have a server (managed by puppet) that generates a file once per day. Is there an approach I could use to make puppet do the following:
It's really the recognizing and uploading that I'm not clear on. I think I understand how to ensure the existence on server B and reload the service.
Any patterns or documentation would be helpful. Thanks.
I'd have a look into exported resources.
You could define an additional resource using a custom fact as source for the file contents:
node servera { @@file { "/generated/file" ensure => present, content => $::myspecialfilecontent tag => myspecialfile, } } and realise the resource on serverb:
node serverb { File <<| tag == 'myspecialfile' |>> { notify => Service["your_service"], } } the custom puppet fact could look like follows (put it in a modules/.../lib/facter/myspecialfilecontent.rb file and enable pluginsync):
filename = '/generated/file' Facter.add(:myspecialfilecontent) do setcode do if File.file?(filename) File.read(filename) end end end you need storeconfigs = true (puppetdb) for that though.
This is not a very clean solution but it could work.
Let's assume that you have a common class or node (like the default) that applies to all the nodes managed by puppet.
Here you create the policy to manage the file created daily, but only a virtual resource.
node default { $fsufix = strftime("%y_%m_%d") @file { "everyday_file" : path => "/scratch/usern/file_${fsufix}", ensure => present, } } Then for the serverA, you just need to check whether that file is present by realizing the virtual resource we just created earlier :
node 'serverA' inherits default { realize(File["everyday_file"]) } After this you want serverB to do the same as serverA plus refresh a service if the file is created or modified :
node 'serverB' inherits default { realize(File["everyday_file"]) service { "mysqld" : ensure => running, hasrestart => true, subscribe => File ["everyday_file"], } } 