// SetupContext creates a new cluster and context in ~/.kube using the provided API Server. If setCurrent is true, it is made the current context.
func SetupContext(clusterName, contextName, kubeAPIServer string, setCurrent bool) error {
pathOpts := kubectlcfg.NewDefaultPathOptions()
config, err := getConfig(pathOpts)
if err != nil {
return err
}
cluster, exists := config.Clusters[clusterName]
if !exists {
cluster = kubecfg.NewCluster()
}
// configure cluster
cluster.Server = kubeAPIServer
cluster.InsecureSkipTLSVerify = true
config.Clusters[clusterName] = cluster
context, exists := config.Contexts[contextName]
if !exists {
context = kubecfg.NewContext()
}
// configure context
context.Cluster = clusterName
config.Contexts[contextName] = context
// set as current if requested
if setCurrent {
config.CurrentContext = contextName
}
return kubectlcfg.ModifyConfig(pathOpts, *config, true)
}
// defaultLoadingRules use the same rules (as of 2/17/16) as kubectl.
func defaultLoadingRules() *clientcmd.ClientConfigLoadingRules {
opts := config.NewDefaultPathOptions()
loadingRules := opts.LoadingRules
loadingRules.Precedence = opts.GetLoadingPrecedence()
return loadingRules
}
// NewKubectlCommand creates the `kubectl` command and its nested children.
func NewKubectlCommand(f *cmdutil.Factory, in io.Reader, out, err io.Writer) *cobra.Command {
// Parent command to which all subcommands are added.
cmds := &cobra.Command{
Use: "kubectl",
Short: "kubectl controls the Kubernetes cluster manager",
Long: `kubectl controls the Kubernetes cluster manager.
Find more information at https://github.com/kubernetes/kubernetes.`,
Run: runHelp,
BashCompletionFunction: bash_completion_func,
}
f.BindFlags(cmds.PersistentFlags())
f.BindExternalFlags(cmds.PersistentFlags())
// From this point and forward we get warnings on flags that contain "_" separators
cmds.SetGlobalNormalizationFunc(flag.WarnWordSepNormalizeFunc)
cmds.AddCommand(NewCmdGet(f, out))
cmds.AddCommand(NewCmdDescribe(f, out))
cmds.AddCommand(NewCmdCreate(f, out))
cmds.AddCommand(NewCmdReplace(f, out))
cmds.AddCommand(NewCmdPatch(f, out))
cmds.AddCommand(NewCmdDelete(f, out))
cmds.AddCommand(NewCmdEdit(f, out, err))
cmds.AddCommand(NewCmdApply(f, out))
cmds.AddCommand(NewCmdNamespace(out))
cmds.AddCommand(NewCmdLogs(f, out))
cmds.AddCommand(NewCmdRollingUpdate(f, out))
cmds.AddCommand(NewCmdScale(f, out))
cmds.AddCommand(NewCmdCordon(f, out))
cmds.AddCommand(NewCmdDrain(f, out))
cmds.AddCommand(NewCmdUncordon(f, out))
cmds.AddCommand(NewCmdAttach(f, in, out, err))
cmds.AddCommand(NewCmdExec(f, in, out, err))
cmds.AddCommand(NewCmdPortForward(f))
cmds.AddCommand(NewCmdProxy(f, out))
cmds.AddCommand(NewCmdRun(f, in, out, err))
cmds.AddCommand(NewCmdStop(f, out))
cmds.AddCommand(NewCmdExposeService(f, out))
cmds.AddCommand(NewCmdAutoscale(f, out))
cmds.AddCommand(rollout.NewCmdRollout(f, out))
cmds.AddCommand(NewCmdLabel(f, out))
cmds.AddCommand(NewCmdAnnotate(f, out))
cmds.AddCommand(cmdconfig.NewCmdConfig(cmdconfig.NewDefaultPathOptions(), out))
cmds.AddCommand(NewCmdClusterInfo(f, out))
cmds.AddCommand(NewCmdApiVersions(f, out))
cmds.AddCommand(NewCmdVersion(f, out))
cmds.AddCommand(NewCmdExplain(f, out))
cmds.AddCommand(NewCmdConvert(f, out))
return cmds
}
// GetCurrentContext returns the context currently being used by kubectl
func GetCurrentContext() (string, error) {
pathOpts := kubectlcfg.NewDefaultPathOptions()
config, err := getConfig(pathOpts)
if err != nil {
return "", err
}
return config.CurrentContext, nil
}
// SetCurrentContext changes the kubectl context to the given value
func SetCurrentContext(context string) error {
pathOpts := kubectlcfg.NewDefaultPathOptions()
config, err := getConfig(pathOpts)
if err != nil {
return err
}
config.CurrentContext = context
return kubectlcfg.ModifyConfig(pathOpts, *config, true)
}
// ValidateToken validates that the given token is valid on the given server
//
// It returns a client config if successful, or an error
func ValidateToken(server string, token string) (*kclient.Config, error) {
opts := &cmd.LoginOptions{
Server: server,
Token: token,
InsecureTLS: true,
APIVersion: api.Version,
StartingKubeConfig: kclientcmdapi.NewConfig(),
PathOptions: kcmdconfig.NewDefaultPathOptions(),
Out: ioutil.Discard,
}
// check the token
if err := opts.GatherInfo(); err != nil {
return nil, err
}
return opts.Config, nil
}
// Login uses the given server/username/password to login on an openshift instance
//
// It returns a client config if successful, or an error
func Login(server string, username string, password string) (*kclient.Config, error) {
opts := &cmd.LoginOptions{
Server: server,
Username: username,
Password: password,
InsecureTLS: true,
APIVersion: api.Version,
StartingKubeConfig: kclientcmdapi.NewConfig(),
PathOptions: kcmdconfig.NewDefaultPathOptions(),
Out: ioutil.Discard,
}
// perform the login, and store a new token in opts
if err := opts.GatherInfo(); err != nil {
return nil, err
}
return opts.Config, nil
}