ruby - puppet getvar() 函数不工作

Question

我正在查看 https://github.com/puppetlabs/puppetlabs-stdlib#getvar

我的 list

class test::var inherits stdlib {

$datalocation = 'site::data'
$bar = getvar("${datalocation}::bar")
# Equivalent to $bar = $site::data::bar

notify{"This is getvar() testing variable, Now bar equal to ${bar}":}

}

当我在客户端上运行 puppet 时，我得到一片空白

[root@401 ~]# puppet agent --test --noop
...
...
Notice: /Stage[main]/test::Var/Notify[This is getvar() testing variable, Now bar equal to '']/message: current_value absent, should be This is getvar() testing variable, Now bar equal to '' (noop)

我错过了什么吗？

Answer 1

当我运行上面的代码时，我的 puppet 输出的一部分是以下警告:

Warning: Scope(Class[Test::Var]): Could not look up qualified variable 'site::data::bar'; class site::data could not be found

这意味着 site::data::bar 在当前范围内不存在。如果您首先定义它，那么您的分配和后续通知将按预期工作。

class site::data {
  $bar = 'foo'
}

class test::var inherits stdlib {
  require site::data

  $datalocation = 'site::data'
  $bar = getvar("${datalocation}::bar")
  # Equivalent to $bar = $site::data::bar                                                                                                                                    

  notify{"This is getvar() testing variable, Now bar equal to ${bar}":}

}