如何使厨师资源执行中的错误消息更丰富？

Question

下面是一些尝试将文件解压到某个目录的厨师代码。

该配方被称为从一些其他食谱深处，它失败随机。

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 

我看到的错误是：

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' . 

由于错误的环境中随机发生我没有SSH访问，我想提高厨师的配方来抓住这个错误，并提供更多的细节在这样的错误消息：

1. 尺寸和tar.gz文件的目标目录的
2. 权限的创建日期

请注意，我必须将它们放入异常的错误消息中，因为这是唯一可以看到（无ssh访问）的复杂厨师跑步。

Answer 1

您可以添加这样的事情

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