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-# 调度器启动
-
-## 前言
-本篇介绍scheduler的初始化相关逻辑
-
-## 入口
-入口函数是位于`cmd/kube-scheduler/scheduler.go`中的main()方法,调用的是app.NewSchedulerCommand()方法，跳转至此方法，可以看到函数上方的注释：
-
-```
-// NewSchedulerCommand creates a *cobra.Command object with default parameters
-func NewSchedulerCommand() *cobra.Command {
-    ...
-}
-```
-NewSchedulerCommand创建的是一个cobra.Command对象，后续的命令行处理相关功能都是借助cobra来实现的，那么继续往下之前，为了避免一脸懵，有必要了解一下cobra这个工具
-
-## cobra
-#### 什么是cobra?
-github主页: https://github.com/spf13/cobra
-主页的介绍是: Cobra是一个强大的用于创建现代化CLI命令行程序的库，用于生成应用程序和命令文件。众多高知名度的项目采用了它，例如我们熟悉的kubernetes和docker
-cobra创建的程序CLI遵循的模式是: `APPNAME COMMAND ARG --FLAG`，与常见的其他命令行程序一样，例如git: `git clone URL --bare`
-
-#### 安装：
-
-```
-#最简单的安装方式，但毫无意外，事情并没有那么简单，我们的网络的问题，导致无法正常安装依赖，
-go get -u github.com/spf13/cobra/cobra
-
-#怎么办呢？先进入GOPATH中，手动安装报错缺失的两个依赖:
-cd /Users/ywq/go/
-mkdir -p src/golang.org/x
-cd golang.org/x
-git clone https://github.com/golang/text.git
-git clone https://github.com/golang/sys.git
-
-#然后执行:
-go install github.com/spf13/cobra/cobra
-matebook-x-pro:x ywq$ ls /Users/ywq/go/bin/cobra
-/Users/ywq/go/bin/cobra
-#安装完毕,记得把GOBIN加入PATH环境变量哦,否则无法直接运行cobra命令
-```
-
-#### 简单试用cobra:
-```
-matebook-x-pro:local ywq$ cd /Users/ywq/go/src/local/
-matebook-x-pro:local ywq$ cobra init testapp --pkg-name=local/testapp
-matebook-x-pro:local ywq$ ls
-testapp
-matebook-x-pro:local ywq$ ls testapp/
-LICENSE  cmd/     main.go
-matebook-x-pro:local ywq$ ls testapp/cmd/
-root.go
-matebook-x-pro:local ywq$ cd testapp
-matebook-x-pro:local ywq$ go run main.go 
-# 报错：subcommand is required，要求提供子命令
-
-# 现在还未创建子命令，那么来创建几个试试:
-matebook-x-pro:testapp ywq$ cobra add get
-get created at /Users/ywq/go/src/local/testapp
-matebook-x-pro:testapp ywq$ cobra add delete
-delete created at /Users/ywq/go/src/local/testapp
-matebook-x-pro:testapp ywq$ cobra add add
-add created at /Users/ywq/go/src/local/testapp
-matebook-x-pro:testapp ywq$ cobra add update
-matebook-x-pro:testapp ywq$ ls cmd/
-add.go		delete.go	get.go		root.go		update.go
-
-# 创建完成，会发现cmd/目录下多了几个go文件,调用试试:
-matebook-x-pro:testapp ywq$ go run main.go get
-get called
-matebook-x-pro:testapp ywq$ go run main.go add
-add called
-```
-