为什么Augeas Puppet资源类型需要3个defnode参数？

Question

我正在尝试使用Puppet中的augeas资源类型在xml配置文件中添加或更新用户,此处清单:

  augeas { "nexus_user_newadmin":
    lens    => "Xml.lns",
    incl    => "security.xml",
    root    => "/usr/local/nexus/conf",
    changes => [
      "defnode user /files/security.xml/security/users/user[id/#text='newadmin']",
      "set $user/id/#text 'newadmin'",
      "set $user/firstName/#text 'first name'",
      "set $user/lastName/#text 'last name'",
      "set $user/password/#text 'passhere'",
      "set $user/status/#text 'active'",
      "set $user/email/#text 'test@domain.com'",
    ],
  }

xml文件如下所示:

<?xml version="1.0"?>
<security>
          <users>
            ...
            <user>
              <id>deployment</id>
              <firstName>Deployment</firstName>
              <lastName>User</lastName>
              <password>somepasshere</password>
              <status>active</status>
              <email>changeme1@yourcompany.com</email>
            </user>
          </users>
</security>

当我运行清单时,我收到错误:

Main/Augeas[nexus_user_newadmin]: Could not evaluate: missing string argument 3 for defnode

看起来命令defnode在从puppet使用时需要3个强制参数,但在从augtool使用时只需要2(和1个可选).(见我原帖)

我怎样才能克服Puppet中augeas实现中的这些限制？

Answer 1

那里有几个问题.

首先,while defnode中包含一个可选的第三个参数(一个值)augtool,这个参数在Ruby/Puppet中是必需的.但是,您可以将其设置为空字符串.

其次,$user变量由Puppet解析,因为你使用双引号,所以Augeas不接收它(它是空的).您必须使用单引号或逃避美元符号.通常,建议在Puppet中使用单引号,除非您需要扩展变量.

第三,它会更好地使用incl和lens,而不是root.您也将从contextPuppet中自动受益:

augeas { 'nexus_user_newadmin':
  lens    => 'Xml.lns',
  incl    => '/usr/local/nexus/conf/security.xml',
  changes => [
    'defnode user security/users/user[id/#text="newadmin"] ""',
    'set $user/id/#text "newadmin"',
    'set $user/firstName/#text "first name"',
    'set $user/lastName/#text "last name"',
    'set $user/password/#text "passhere"',
    'set $user/status/#text "active"',
    'set $user/email/#text "test@domain.com"',
  ],
}