| encoding/hex | Package hex implements hexadecimal encoding and decoding. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/distribution/reference | Package reference provides a general type to represent any way of referencing images within the registry. |
| github.com/pkg/errors | Package errors provides simple error handling primitives. |
| github.com/spf13/pflag | Package pflag is a drop-in replacement for Go's flag package, implementing POSIX/GNU-style --flags. |
| k8s.io/apimachinery/pkg/util/sets | Package sets has generic set and specified sets. |
| k8s.io/apimachinery/pkg/util/validation | |
| k8s.io/apimachinery/pkg/util/validation/field | |
| k8s.io/cluster-bootstrap/token/api | Package api (k8s.io/cluster-bootstrap/token/api) contains constants and types needed for bootstrap tokens as maintained by the BootstrapSigner and TokenCleaner controllers (in k8s.io/kubernetes/pkg/controller/bootstrap) |
| k8s.io/cluster-bootstrap/token/util | |
| k8s.io/klog/v2 | Package klog contains the following functionality: |
| k8s.io/kubernetes/cmd/kubeadm/app/apis/bootstraptoken/v1 | |
| k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm | Package kubeadm is the package that contains the libraries that drive the kubeadm binary. |
| k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta3 | Package v1beta3 defines the v1beta3 version of the kubeadm configuration file format. |
| k8s.io/kubernetes/cmd/kubeadm/app/cmd/options | Package options provide a central point for defining flags for kubeadm cobra commands, no matter if hard coded commands or autogenerated command for phases. |
| k8s.io/kubernetes/cmd/kubeadm/app/componentconfigs | |
| k8s.io/kubernetes/cmd/kubeadm/app/constants | |
| k8s.io/kubernetes/cmd/kubeadm/app/features | |
| k8s.io/kubernetes/cmd/kubeadm/app/util | Package util contains kubeadm utilities. |
| k8s.io/utils/net | |
| net | Package net provides a portable interface for network I/O, including TCP/IP, UDP, domain name resolution, and Unix domain sockets. |
| net/url | Package url parses URLs and implements query escaping. |
| 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. |
| strconv | Package strconv implements conversions to and from string representations of basic data types. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |