hi,guys-
I have a mysql database which stores host informations,so I wrote a
function to get some values.
- Here is the function rb(this function should return the type I defined
in the database):
#hosttype.rb
require "mysql"
module Puppet::Parser::Functions
newfunction(:hosttype, :type => :rvalue, :doc => "Gets host type from
db.") do |args|
dbh = Mysql.real_connect("mysql_server_ip", "username", "password",
"puppet")
res = dbh.query("SELECT host_type FROM host_extra_info where
name='" + args[0] + "'")
# return res.fetch_row
puts res.fetch_row
res.free
dbh.close if dbh
end
end
- Also I wrote a .pp file to test it:
#/tmp/1.pp
$extraaaaa = hosttype("my_hostname")
notify { $extraaaaa: }
Test results(the red value is the query result from db):
[root@pm tmp]# puppet 1.pp
notice: server
notice: /Stage[main]//Notify[server]/message: defined 'message' as 'server'
notice: Finished catalog run in 0.06 seconds
It looks right,but when I use it in my module manifests,it didn't work!
- my custom module manifests:
#extracache.pp
class custom::extracache {
$extra_info = hosttype($hostname)
notify { test:
message => "$extra_info"
}
file { "/etc/puppet/host_extra_info.cache":
content => "$extra_info",
}
}
Puppet run results:
[root@pm tmp]# puppet agent --onetime --no-daemonize --verbose
info: Retrieving plugin
notice:
/File[/var/lib/puppet/lib/puppet/parser/functions/hosttype.rb]/content:
content changed '{md5}2493078b3c7e78b5c9e26b35bb1ccd85' to
'{md5}614766f30295d33d8d27fa6dab768cc4'
info: Loading downloaded plugin
/var/lib/puppet/lib/puppet/parser/functions/hosttype.rb
info: Caching catalog for xxxxxxx
info: Applying configuration version '1362562073'
notice:
notice: /Stage[main]/Custom::Extracache/Notify[test]/message: defined
'message' as ''
notice: Finished catalog run in 0.73 seconds
It becomes nil,and I just don't know why.
Any reply I will appreciate!
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