厨师：在不同的食谱中使用属性

Question

我正在尝试使用在一本食谱中定义的属性，比如 foo，在另一本食谱中，比如 bar。我收到错误“nil:NilClass 的未定义方法 `[]'”

Chef
    solo.rb
    cookbooks
        foo
            attributes
                default.rb
            recipes
                default.rb
            metadata.rb
        bar
            attributes
                default.rb
            recipes
                default.rb
            metadata.rb
    roles
        roles.json

以上是我的厨师的结构。

solo.rb

cookbook_path File.expand_path("../chef/cookbooks", __FILE__)
json_attribs File.expand_path("../chef/roles/roles.json", __FILE__)
log_location STDOUT
log_level :debug

roles.json

{
    "run_list": ["recipe[foo::default]"]
}

foo/attributes/default.rb

default['foo']['var1'] = "Hello"

栏/属性/default.rb

default['bar']['var1'] = node['foo']['var1']

foo/metadata.rb

name 'foo'
depends 'bar'

当我运行查询 chef-solo -c solo.rb 时，我收到如下错误

================================================================================
Recipe Compile Error in ../chef/cookbooks/bar/attributes/default.rb
================================================================================

NoMethodError
-------------
undefined method `[]' for nil:NilClass

Relevant File Content:
----------------------
Recipe Compile Error in ../chef/cookbooks/bar/attributes/default.rb:
1>> default['bar']['var1'] = node['foo']['var1']

这里foo 是我的应用程序，bar 是Chef Maven。如何导入属性？？

Answer 1

您已经反转了食谱依赖项。如果你想在 bar 食谱中使用 node['foo']['var1'] 属性，那么 bar 食谱应该依赖于 foo 食谱，而不是相反。

去掉foo/metadata.rb中的depends 'bar'，创建bar/metadata.rb

name 'bar'
depends 'foo'

完整示例：

|____cookbooks
| |____foo
| | |____attributes
| | | |____default.rb
| |____bar
| | |____recipes
| | | |____default.rb
| | |____attributes
| | | |____default.rb
| | |____metadata.rb

cookbooks/foo/attributes/default.rb

default['foo']['var1'] = "Hello"

cookbooks/bar/attributes/default.rb

default['bar']['var1'] = node['foo']['var1']

cookbooks/bar/recipes/default.rb

log "The value of ['bar']['var1'] is #{node['bar']['var1']}. The value of ['foo']['var1'] is also #{node['foo']['var1']}"

cookbooks/bar/metadata.rb

name 'bar'
depends 'foo'

样本输出

# chef-client -z -o 'recipe[bar]'    
...
resolving cookbooks for run list: ["bar"]
Synchronizing Cookbooks:
  - foo (0.0.0)
  - bar (0.0.0)
Compiling Cookbooks...
Converging 1 resources
Recipe: bar::default
  * log[The value of ['bar']['var1'] is Hello. The value of ['foo']['var1'] is also Hello] action write