IT博客汇 | chef使用shell的output做为Template的变量

chef使用shell的output做为Template的变量

深夜的蚊子发表于 2016-12-12 08:08:25

本文主要介绍如何在chef中使用shell的output结果动态创建一个变量，从而在template中使用该变量

这里主要用到了chef里的ruby_block资源

看一个例子

#tricky way to load this Chef::Mixin::ShellOut utilities
Chef::Resource::RubyBlock.send(:include, Chef::Mixin::ShellOut)
ruby_block "get output" do
    block do
        command = '/tmp/test.sh'
        command_out = shell_out(command)
        node.default['return_val'] = command_out.stdout
    end
    action :create
end

template '/tmp/new.sh' do
   source 'test.erb'
   owner 'root'
   group 'root'
   mode '0644'
   variables( lazy {{:config_var => node['return_val']}})
end

上面的代码执行结果如下

* ruby_block[get output] action run
  - execute the ruby block reload client config
* template[/tmp/new.sh] action create
  - create new file /tmp/new.sh
  - update content in file /tmp/new.sh from none to 2c9c1f
  --- /tmp/new.sh  2016-08-05 13:20:21.678786687 +0000
  +++ /tmp/.chef-new.sh20160805-12338-81wvgw   2016-08-05 13:20:21.678786687 +0000
  @@ -1 +1,2 @@
  +mrigesh
  - change mode from '' to '0644'
  - change owner from '' to 'root'
  - change group from '' to 'root'
  - restore selinux security context