迭代Chef ERB模板中的一系列哈希值

时间:2012-12-04 13:50:56

标签: ruby chef

我正在尝试为厨师制作食谱,其中包括以下属性:

default['web-server']['hosts'] = [ { host: "some-ip", server: "some-server", port: "9000" } ]

我的想法是迭代它来创建配置文件(在本例中为lighttpd),如下所示:

<% if node['web-server']['hosts'].length > 0 -%>
<%   node['web-server']['hosts'].each do |host| -%>

  $HTTP["host"] =~ "<%= host.host %>" {
    proxy.balance = "round-robin" proxy.server = (
      "" => (
          "play" => (
             "host" => "<%= host.server %>",
             "port" => <%= host.port %>
           )
         )
     )
  }
<%   end -%>
<% else -%>
<% end -%>

但是,在测试节点上运行chef-client时,我会收到:

FATAL: Chef::Mixin::Template::TemplateError: undefined method `host' for #<Mash:0x00000002b9a878>

循环哈希数组的正确方法是什么?

1 个答案:

答案 0 :(得分:3)

好的,我想出来了。正确的语法是通过hash[:key]访问哈希密钥,即

$HTTP["host"] =~ "<%= host[:host] %>" {
    proxy.balance = "round-robin" proxy.server = (
         "" => (
             "play" => (
               "host" => "<%= host[:server] %>",
               "port" => <%= host[:port] %>
             )
         )
       )
  }
  <%   end -%>
  <% else -%>
  <% end -%>