Chef 简明教程
Chef - Chef-Client Run
为了测试 Chef-Client 运行，我们需要将 Chef-Client 配置为使用托管的 Chef 或自有托管服务器。
In order to test Chef-Client run, we need to have Chef-Client configured to use the hosted Chef or own hosted server.
Running Chef-Client in Debug Mode
vipin@server:~$ sudo chef-client -l debug
…TRUNCATED OUTPUT…
Hashed Path:A+WOcvvGu160cBO7IFKLYPhh9fI=
X-Ops-Content-Hash:2jmj7l5rSw0yVb/vlWAYkK/YBwk=
X-Ops-Timestamp:2012-12-27T11:14:07Z
X-Ops-UserId:vagrant'
Header hash: {"X-Ops-Sign"=>"algorithm=sha1;version=1.0;",
"X-Ops-Userid"=>"vagrant", "X-Ops-Timestamp"=>"2012-12-
27T11:14:07Z", "X-Ops-Content-
Hash"=>"2jmj7l5rSw0yVb/vlWAYkK/YBwk=", "X-Ops-
Authorization-
1"=>"HQmTt9U/
LJJVAJXWtyOu3GW8FbybxAIKp4rhiw9O9O3wtGYVHyVGuoilWDao",
"X-Ops-Authorization-
2"=>"2/uUBPWX+YAN0g1/
fD2854QAU2aUcnSaVM0cPNNrldoOocmA0U5HXkBJTKok",
"X-Ops-Authorization-
3"=>"6EXPrEJg5T+
ddWd5qHAN6zMqYc3untb41t+eBpigGHPhtn1LLInMkPeIYwBm",
"X-Ops-Authorization-
4"=>"B0Fwbwz2HVP3wEsYdBGu7yOatq7fZBXHfIpeOi0kn/
Vn0P7HrucnOpONmMgU", "X-Ops-Authorization-
5"=>"RBmmbetFSKCYsdg2v2mW/
ifLIVemhsHyOQjffPYPpNIB3U2n7vji37NxRnBY",
"X-Ops-Authorization-
6"=>"Pb3VM7FmY60xKvWfZyahM8y8WVV9xPWsD1vngihjFw=="}
[2012-12-27T11:14:07+00:00] DEBUG: Sending HTTP Request via
GET to api.opscode.com:443/organizations/agilewebops/
nodes/vagrant
[2012-12-27T11:14:09+00:00] DEBUG: ---- HTTP Status and
Header Data: ----
[2012-12-27T11:14:09+00:00] DEBUG: HTTP 1.1 200 OK
[2012-12-27T11:14:09+00:00] DEBUG: server: nginx/1.0.5
[2012-12-27T11:14:09+00:00] DEBUG: date: Thu, 27 Dec 2012Inspecting the Result of the Last Chef-Client Run
为了检查在开发新配方时的 Chef-Client 的最后一次运行，尤其是故障问题，我们需要确切地知道哪里出错了。尽管 Chef 在 stdout 中打印了一切，但人们可能想要再次查看调试日志。
In order to check the last Chef-Client run especially failure issues when we are developing a new cookbook, we need to know what exactly went wrong. Even though Chef prints everything in stdout, one might want to see the debug log again.
如果我们要进行测试，我们需要一份在编译时失败的错误配方。
If we want to test, we need to have a broken cookbook which is failing on compilation.
user@server:~$ sudo chef-client
==================================================================
==============
Recipe Compile Error in /srv/chef/file_store/cookbooks/my_
cookbook/recipes/default.rb
==================================================================
==============
NoMethodError
-------------
undefined method `each' for nil:NilClass
Cookbook Trace:
---------------
/srv/chef/file_store/cookbooks/my_cookbook/recipes/default.
rb:9:in `from_file'
Relevant File Content:
----------------------
/srv/chef/file_store/cookbooks/my_cookbook/recipes/default.rb:
2: # Cookbook Name:: my_cookbook
3: # Recipe:: default
4: #
5: # Copyright 2013, YOUR_COMPANY_NAME
6: #
7: # All rights reserved - Do Not Redistribute
8: #
9≫ nil.each {}
10:欲了解更多详情，我们可以查看堆栈轨迹。
For more details, we can look into the stacktrace.
user@server:~$ less /srv/chef/file_store/chef-stacktrace.out
Generated at 2013-07-21 18:34:05 +0000
NoMethodError: undefined method `each' for nil:NilClass
/srv/chef/file_store/cookbooks/my_cookbook/recipes/default.rb:9:in
`from_file'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/
mixin/from_file.rb:30:in `instance_eval'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/
mixin/from_file.rb:30:in `from_file'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/
cookbook_version.rb:346:in `load_recipe'