Puppet v8自定义模块出现Unknown variable: 'ssh_user'错误求助

错误信息 #

Error: Could not retrieve catalog from remote server: Error 500 on SERVER: Server Error: Evaluation Error: Unknown variable: 'ssh_user'

相关代码片段 #

class users::virtual {

    define ssh_user( $user=$name, $uid, $password, $key, $home_dir = 'home' ) {
        user { $user:
            ensure     => present,
            managehome => true,
            uid        => $uid,
            password   => $password,
            home       => "/${home_dir}/${user}"
         }

        ssh_authorized_key { "${user}_key":
            key  => $key,
            type => "ssh-rsa",
            user => $user,
        }

    }

    define ssh_home ($home_dir = 'home') {
      file { "/${home_base_dir}/${name}/.ssh":
          ensure => directory,
          owner  => $name,
          group => $name,
          mode => 0700,
      } ->

      file { "/${home_dir}/${name}/.ssh/id_rsa":
          source => "puppet:///modules/users/${name}/ssh/id_rsa",
          owner  => $name,
          group => $name,
          mode => 0600,
      } ->

      file { "/${home_dir}/${name}/.ssh/id_rsa.pub":
          source => "puppet:///modules/users/${name}/ssh/id_rsa.pub",
          owner  => $name,
          group => $name,
          mode => 0644,
      }
    }
            
    ssh_user { "myuser":
        uid      => 1010,
        password => 'hidden',
        key      => "hidden",
    }

}

问题原因 #

1. 资源类型与变量混淆：你错误地将自定义资源类型ssh_user当成变量来使用（比如写成$ssh_user或@ssh_user）。Puppet中调用自定义资源时，直接使用资源类型名称即可，不需要加$或@前缀。一旦写成$ssh_user，Puppet会将其视为变量，但该变量从未被定义，因此触发"Unknown variable"错误。

2. 额外未定义变量问题：你定义的ssh_home资源中，第一个file资源引用了未定义的$home_base_dir变量，这也会导致类似的变量未定义错误，需要将其改为参数中已定义的$home_dir来修复。

修复方案 #

• 确保调用自定义资源时使用正确的资源类型名，保持代码中最后一段的写法即可：

  ssh_user { "myuser":
      uid      => 1010,
      password => 'hidden',
      key      => "hidden",
  }
  

• 修正ssh_home中的变量错误：

  define ssh_home ($home_dir = 'home') {
    file { "/${home_dir}/${name}/.ssh":
        ensure => directory,
        owner  => $name,
        group => $name,
        mode => 0700,
    } ->
    # 后续代码保持不变
  }
  

内容的提问来源于stack exchange，提问作者Confounder