| github.com/pkg/errors | Package errors provides simple error handling primitives. |
| k8s.io/apimachinery/pkg/util/errors | Package errors implements various utility functions and types around errors. |
| k8s.io/kubernetes/cmd/kubeadm/app/constants | |
| k8s.io/utils/exec | Package exec provides an injectable interface and implementations for running commands. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| path/filepath | Package filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths. |
| runtime | Package runtime contains operations that interact with Go's runtime system, such as functions to control goroutines. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |