Summary •Goroutine is great for concurrency programming. •Channel used for coordination between goroutines. •State machine pattern simplifies the implementation of control flow. •Try it, love it and contribute

行的操作失败的次数，counter类型 • kubelet_pod_start_duration_seconds*：histogram类型，描述pod从pending 状态进入running状态花费的时间 • go_goroutines：kubelet的goroutine的数量 • kubelet_pleg_relist_duration_seconds*：histogram类型，pleg是Pod Lifecycle Event