如何获得一个 linux 命令输出到厨师属性

Question

我想将命令输出放入厨师属性中。 有人可以帮助我如何在执行资源或 bash 资源中设置它。

ruby_block "something" do
    block do
        #tricky way to load this Chef::Mixin::ShellOut utilities
        Chef::Resource::RubyBlock.send(:include, Chef::Mixin::ShellOut)      
        command = 'cat #{fileName}'
        command_out = shell_out(command)
        node.set['my_attribute'] = command_out.stdout
    end
    action :create
end

如何在上面的代码中使用属性..

Answer 1

您的问题的答案在How can I put the output of a Chef 'execute resource' into a variable 中非常详细。 稍加修改，如果我理解正确，您的问题可以这样解决：

ruby_block "something" do
    block do
        #tricky way to load this Chef::Mixin::ShellOut utilities
        Chef::Resource::RubyBlock.send(:include, Chef::Mixin::ShellOut)      
        command = 'cat /etc/hostname'
        command_out = shell_out(command)
        node.set['my_attribute'] = command_out.stdout
    end
    action :create
end

将command的内容替换为要运行的命令，将my_attribute替换为要设置的属性。