Chef - Chef-Client 執行

為了測試 Chef-Client 的執行，我們需要配置 Chef-Client 以使用託管的 Chef 或自己託管的伺服器。

在除錯模式中執行 Chef-Client

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 2012 

檢查最後一次 Chef-Client 執行的結果

為了檢查最後一次 Chef-Client 執行，特別是在我們開發新食譜時出現故障問題，我們需要知道具體出了什麼問題。即使 Chef 在 stdout 中列印所有內容，也可能會想要再次檢視除錯日誌。

如果我們想測試，我們需要有一個在編譯時失敗的損壞食譜。

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: 

有關更多詳細資訊，我們可以檢視堆疊跟蹤。

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'