如何使廚師資源執行中的錯誤消息更豐富？

Question

下面是一些嘗試將文件解壓到某個目錄的廚師代碼。

該配方被稱爲從一些其他食譜深處，它失敗隨機。

unless ::File.exists?(::File.join(node[:zookeeper][:install_dir], zk_basename)) 

    execute 'install zookeeper' do # <-- Line 57 
    user node[:zookeeper][:user] 
    cwd Chef::Config[:file_cache_path] 
    command "tar -C#{node[:zookeeper][:install_dir]} -zxf #{zk_basename}.tar.gz" 
    end 
end 

我看到的錯誤是：

Mixlib::ShellOut::ShellCommandFailed: execute[install zookeeper] (zookeeper::add line 57) had an error: 
Mixlib::ShellOut::ShellCommandFailed: Expected process to exit with [0], but received '2' . , 
FATAL: Mixlib::ShellOut::ShellCommandFailed: execute[install zookeeper] (zookeeper::add line 57) had an error: 
Mixlib::ShellOut::ShellCommandFailed: Expected process to exit with [0], but received '2' . 

由於錯誤的環境中隨機發生我沒有SSH訪問，我想提高廚師的配方來抓住這個錯誤，並提供更多的細節在這樣的錯誤消息：

1. 尺寸和tar.gz文件的目標目錄的
2. 權限的創建日期

請注意，我必須將它們放入異常的錯誤消息中，因爲這是唯一可以看到（無ssh訪問）的複雜廚師跑步。

Answer 1

您可以添加這樣的事情

log 'log_important_bits' do 
    message lazy { 
    the_dir = ::File.stat(node[:zookeeper][:install_dir]) 
    the_file = ::File.stat(::File.join(node[:zookeeper][:install_dir], zk_basename)) 
    "file.size = #{the_file.size} ... put whatever you want here" 
    } 
    level :error # So you'll always see it 
end