Puppet - 测试包是否已经定义? [英] Puppet - test if a package already defined?

问题描述

我正在编写一些 puppet 模块，并且在两个模块中定义了一个包，因此出现以下错误:

I'm writing some puppet modules and have a package defined in two modules hence get the following error:

err: Could not retrieve catalog from remote server: Error 400 on SERVER: Duplicate definition: Package[gnome-session-fallback] is already defined in file /etc/puppet/modules/vnc4server/manifests/init.pp at line 3; cannot redefine at /etc/puppet/modules/vino/manifests/init.pp:7 on node l

因此要确保包尚未定义，但以下内容不起作用:

Hence want to ensure that the package has not already been defined but the following does not work:

if ! defined ('gnome-session-fallback') {
    package { 'gnome-session-fallback':
        ensure => installed,
    }
}

谁能建议如何解决这个问题，在更广泛的范围内，避免模块中此类冲突的正确"方法是什么?

Can anyone suggest how to fix this, and on the broader scale, what is the "proper" approach to avoiding clashes such as this in modules?

推荐答案

您在 defined() 中缺少 Package[].正确的做法:

You are missing Package[] inside defined(). The correct way to do it:

if ! defined(Package['gnome-session-fallback']) {
    package { 'gnome-session-fallback':
        ensure => installed,
    }
}

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