anchor.diff:  }
   --------------------------------------------------
   
  -Additionally, for settings that you do not wish to store in the configuration
  -file, you can use the value `${prompt.text}` or `${prompt.secret}` and start
  -Elasticsearch in the foreground. `${prompt.secret}` has echoing disabled so
  -that the value entered will not be shown in your terminal; `${prompt.text}`
  -will allow you to see the value as you type it in. For example:
  +另外, 对于你不希望存储在配置文件中的设置, 你可以使用值 `${prompt.text}` 或 `${prompt.secret}` 并在前台启动
  +Elasticsearch. `${prompt.secret}` 禁用了 echoing, 所以输入的值不会在终端中显示; `${prompt.text}` 允许你看到你在
  +它里面输入的值. 例如:
   
   [source,yaml]
   --------------------------------------------------
  
positive.code:   name: <NAME OF YOUR CLUSTER>
  --------------------------------------------------
  
  Make sure that you don't reuse the same cluster names in different
  environments, otherwise you might end up with nodes joining the wrong cluster.
  For instance you could use `logging-dev`, `logging-stage`, and `logging-prod`
  for the development, staging, and production clusters.
  
  [float]
  [[node-name]]
  ==== Node name
  
  You may also want to change the default node name for each node to
  something like the display hostname. By default Elasticsearch will
  randomly pick a Marvel character name from a list of around 3000 names
  when your node starts up.
  
  [source,yaml]
  --------------------------------------------------
  
negative.code: }
  --------------------------------------------------
  
  它也意味着很容易使用 `ES_JAVA_OPTS` 选项或作为 `elasticsearch` 命令的参数来提供外部的设置, 例如:
  
  [source,sh]
  --------------------------------------------------
  $ elasticsearch -Des.network.host=10.0.0.4
  --------------------------------------------------
  
  另一个选项是设置 `es.default.` 前缀而不是 `es.` 前缀, 它意味着仅当没有在配置文件中显示地设置时才使用默认设置.
  
  另一个选项是在配置文件中使用 `${...}` 符号, 这样会将其解析成一个环境变量设置, 例如:
  
  [source,js]
  --------------------------------------------------
  