preflight

Imports

• github.com/blang/semver
• k8s.io/kubernetes/pkg/kubeapiserver/authorizer/modes
• k8s.io/kubernetes/pkg/util/initsystem
• k8s.io/kubernetes/pkg/api/validation
• k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm
• github.com/PuerkitoBio/purell
• k8s.io/kubernetes/cmd/kubeadm/app/constants
• k8s.io/kubernetes/test/e2e_node/system

Standard library imports

• bufio
• bytes
• crypto/tls
• crypto/x509
• encoding/json
• fmt
• io
• io/ioutil
• net
• net/http
• net/url
• os
• os/exec
• path/filepath
• time