许多系统都遵循这种模式，在这些系统中，你编写一些模块/组件，然后通过一个外部配置文件定义他们之间的连接。
There are lots of systems that follow this pattern, where you write some modules / components in source code then describe how they are connected using an external config file.
如果没有看到全部五个调控器，要检查在配置文件中是否启用了所有调控器并确保按第1部分中的说明装载了调控器的模块。
If you do not see all five of the governors, check to make sure all the governors are enabled in your config file and that you have the governor's module loaded as I described in Part 1.
接下来，修改 PAM 配置文件，将 pam_namspace.so 模块添加到从控制台或安全 shell 登录时要运行的模块列表中。
Next, modify the PAM configuration files to add the pam_namspace.so module to the list of required modules to run on login from the console and from the secure shell.
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