puppet 自定义facter

[root@agent1 facter]# rpm -ql facter
/usr/bin/facter
/usr/lib/ruby/site_ruby/1.8/facter
/usr/lib/ruby/site_ruby/1.8/facter.rb
/usr/lib/ruby/site_ruby/1.8/facter/Cfkey.rb
/usr/lib/ruby/site_ruby/1.8/facter/application.rb
/usr/lib/ruby/site_ruby/1.8/facter/architecture.rb
/usr/lib/ruby/site_ruby/1.8/facter/augeasversion.rb
/usr/lib/ruby/site_ruby/1.8/facter/blockdevices.rb
/usr/lib/ruby/site_ruby/1.8/facter/domain.rb
/usr/lib/ruby/site_ruby/1.8/facter/ec2.rb
/usr/lib/ruby/site_ruby/1.8/facter/facterversion.rb
/usr/lib/ruby/site_ruby/1.8/facter/filesystems.rb
/usr/lib/ruby/site_ruby/1.8/facter/fqdn.rb
/usr/lib/ruby/site_ruby/1.8/facter/hardwareisa.rb
/usr/lib/ruby/site_ruby/1.8/facter/hardwaremodel.rb

[root@agent1 ~]# cd /usr/lib/ruby/site_ruby/1.8/facter/
[root@agent1 facter]# vim rpms.rb
Facter.add(:rpms) do
  setcode do
    %x{/bin/rpm -qa | wc -l}.chomp  #定义一个shell命令
  end
end

[root@agent1 facter]# facter | grep rpms
rpms => 918
[root@agent1 facter]# facter  rpms
918

[root@agent1 ~]# vim /var/lib/puppet/kiss_fact/users.rb
Facter.add(:users) do
  setcode do
    %x{/usr/bin/who |wc -l}.chomp
  end
end
[root@agent1 kiss_fact]# facter users #无显示结果，需要设置FACTERLIB
[root@agent1 kiss_fact]#

[root@agent1 kiss_fact]# export FACTERLIB=/var/lib/puppet/kiss_fact
[root@agent1 kiss_fact]# facter users
2
[root@agent1 kiss_fact]# facter | grep users
users => 2

[root@agent1 ~]# vim /usr/lib/ruby/site_ruby/1.8/facter/util/config.rb
 32   def self.external_facts_dirs
 33     if Facter::Util::Root.root?
 34       windows_dir = windows_data_dir
 35       if windows_dir.nil? then
 36         ["/etc/facter/facts.d", "/etc/puppetlabs/facter/facts.d"]  #external路径位置
 37       else
 38         [File.join(windows_dir, 'PuppetLabs', 'facter', 'facts.d')]
 39       end
 40     else
 41       [File.expand_path(File.join("~", ".facter", "facts.d"))]
 42     end
 43   end

[root@agent1 ~]# mkdir /etc/facter/facts.d -p
[root@agent1 facts.d]# vim roles.txt
web=http
db=mysql

[root@agent1 facts.d]# facter web1
http1
[root@agent1 facts.d]# facter db1
mysql1
[root@agent1 facts.d]# facter | egrep 'web1|db1'
db1 => mysql1
web1 => http1

[root@agent1 facts.d]# vim roles.yaml
---
web2:
 - http2
db2:
 - mysql2

[root@agent1 facts.d]# facter | egrep 'web2|db2'
db2 => mysql2
web2 => http2

[root@agent1 facts.d]# vim roles.json
{
   "web3": "http3",
   "db3": "mysql3"
}

[root@agent1 facts.d]# facter | egrep 'web3|db3'
Cannot parse JSON data file /etc/facter/facts.d/roles.json without the json library.
Suggested next step is `gem install json` to install the json library. #缺少json包
[root@agent1 facts.d]# rpm -ivh rubygem-json-1.5.5-2.el5.x86_64.rpm #安装rubygem-json包，找不到安装包的同志可在群共享里面查找，群号码在文章最后面。

[root@agent1 facts.d]# facter | egrep 'web3|db3'
db3 => mysql3
web3 => http3

[root@agent1 facts.d]# vim roles.sh
#!/bin/bash
echo "web4=http4"
echo "db4=mysql4"

[root@agent1 facts.d]# chmod a+x roles.sh

[root@agent1 facts.d]# facter web4 db4
db4 => mysql4
web4 => http4

[root@puppetmaster ~]# cd /etc/puppet/environments/kissprd/environment/modules/
[root@puppetmaster modules]# tree facts/  #目录结构
facts/
└── lib
    └── facter
        └── hwclock.rb
2 directories, 1 file

[root@puppetmaster facter]# vim hwclock.rb  #自定义fact：hwclock，显示节点硬件时间
Facter.add(:hwclock) do
  setcode do
    %x{/usr/sbin/hwclock}.chomp
  end
end

[root@puppetmaster kissprd]# vim application/modules/motd/manifests/init.pp
class motd{
  package{ 'setup':
    ensure => present,
  }
  file{ '/etc/motd':
    ensure  => present,
    owner   => 'root',
    group   => 'root',
    mode    => '0644',
    source  => "puppet://$puppetserver/modules/motd/etc/motd",
    require => Package['setup'],
  }
  notify { " Hardware-Clock: ${::hwclock}": } #添加一个通知，这里只是测试，没有实际意义
}

[root@puppetmaster kissprd]# vim /etc/puppet/puppet.conf
[main]
    logdir = /var/log/puppet
    rundir = /var/run/puppet
    ssldir = $vardir/ssl
    pluginsync = true    #添加插件选项
...

[root@puppetmaster kissprd]# vim environment/modules/puppet/templates/puppet.conf.erb
### config by  puppet ###
[main]
    logdir = /var/log/puppet
    rundir = /var/run/puppet
    ssldir = $vardir/ssl
    pluginsync = true  #添加插件选项
[agent]
    classfile = $vardir/classes.txt
    localconfig = $vardir/localconfig
    server = <%= scope.lookupvar('puppet::params::puppetserver') %>
    certname = <%= scope.lookupvar('puppet::params::certname') %>

[root@agent1 ~]# facter -p hwclock  #没有这个fact，自定义fact需要加上-p参数才能显示
[root@agent1 ~]# puppet agent -t --environment=kissprd  #运行一次
info: Retrieving plugin
notice: /File[/var/lib/puppet/lib/facter/historys.rb]/ensure: removed
notice: /File[/var/lib/puppet/lib/facter/hwclock.rb]/ensure: defined content as '{md5}d8cc9fe2b349a06f087692763c878e28'
info: Loading downloaded plugin /var/lib/puppet/lib/facter/hwclock.rb  #下载插件至节点factpath指定的目录
info: Loading facts in /var/lib/puppet/lib/facter/hwclock.rb
info: Caching catalog for agent1_cert.kisspuppet.com
info: Applying configuration version '1396170375'
notice:  Hardware-Clock: Sun 30 Mar 2014 05:06:16 PM CST  -0.055086 seconds
notice: /Stage[main]/Motd/Notify[ Hardware-Clock: Sun 30 Mar 2014 05:06:16 PM CST  -0.055086 seconds]/message: defined 'message' as ' Hardware-Clock: Sun 30 Mar 2014 05:06:16 PM CST  -0.055086 seconds' #应用
notice: Finished catalog run in 0.51 seconds
[root@agent1 ~]# facter -p  hwclock #自定义的hwclock生效
hwclock => Sun 30 Mar 2014 05:06:25 PM CST  -0.567090 seconds
[root@agent1 ~]# ll /var/lib/puppet/lib/facter/  #插件已经下载到本地
total 4
-rw-r--r-- 1 root root 79 Mar 30 17:06 hwclock.rb

[root@agent1 ~]# puppet --genconfig | grep factpath
    factpath = /var/lib/puppet/lib/facter:/var/lib/puppet/facts