// GetKubeConfig returns a config used for the Kubernetes client with CLI
// options parsed.
func GetKubeConfig(cmd *cobra.Command) *client.Config {
config := &client.Config{}
var host string
if hostFlag := GetFlagString(cmd, "server"); len(hostFlag) > 0 {
host = hostFlag
glog.V(2).Infof("Using server from -s flag: %s", host)
} else if len(os.Getenv("KUBERNETES_MASTER")) > 0 {
host = os.Getenv("KUBERNETES_MASTER")
glog.V(2).Infof("Using server from env var KUBERNETES_MASTER: %s", host)
} else {
// TODO: eventually apiserver should start on 443 and be secure by default
host = "http://localhost:8080"
glog.V(2).Infof("No server found in flag or env var, using default: %s", host)
}
config.Host = host
if client.IsConfigTransportSecure(config) {
// Get the values from the file on disk (or from the user at the
// command line). Override them with the command line parameters, if
// provided.
authPath := GetFlagString(cmd, "auth-path")
authInfo, err := kubectl.LoadAuthInfo(authPath, os.Stdin)
if err != nil {
glog.Fatalf("Error loading auth: %v", err)
}
config.Username = authInfo.User
config.Password = authInfo.Password
// First priority is flag, then file.
config.CAFile = FirstNonEmptyString(GetFlagString(cmd, "certificate-authority"), authInfo.CAFile)
config.CertFile = FirstNonEmptyString(GetFlagString(cmd, "client-certificate"), authInfo.CertFile)
config.KeyFile = FirstNonEmptyString(GetFlagString(cmd, "client-key"), authInfo.KeyFile)
config.BearerToken = authInfo.BearerToken
// For config.Insecure, the command line ALWAYS overrides the authInfo
// file, regardless of its setting.
if insecureFlag := GetFlagBoolPtr(cmd, "insecure-skip-tls-verify"); insecureFlag != nil {
config.Insecure = *insecureFlag
} else if authInfo.Insecure != nil {
config.Insecure = *authInfo.Insecure
}
}
// The API version (e.g. v1beta1), not the binary version.
config.Version = GetFlagString(cmd, "api-version")
return config
}
func main() {
flag.Usage = func() {
usage()
}
flag.Parse()
util.InitLogs()
defer util.FlushLogs()
verflag.PrintAndExitIfRequested()
// Initialize the client
if clientConfig.Host == "" {
clientConfig.Host = os.Getenv("KUBERNETES_MASTER")
}
// Load namespace information for requests
// Check if the namespace was overriden by the -ns argument
ctx := api.NewDefaultContext()
if len(*ns) > 0 {
ctx = api.WithNamespace(ctx, *ns)
} else {
nsInfo, err := kubecfg.LoadNamespaceInfo(*nsFile)
if err != nil {
glog.Fatalf("Error loading current namespace: %v", err)
}
ctx = api.WithNamespace(ctx, nsInfo.Namespace)
}
if clientConfig.Host == "" {
// TODO: eventually apiserver should start on 443 and be secure by default
clientConfig.Host = "http://localhost:8080"
}
if client.IsConfigTransportSecure(clientConfig) {
auth, err := kubecfg.LoadAuthInfo(*authConfig, os.Stdin)
if err != nil {
glog.Fatalf("Error loading auth: %v", err)
}
clientConfig.Username = auth.User
clientConfig.Password = auth.Password
if auth.CAFile != "" {
clientConfig.CAFile = auth.CAFile
}
if auth.CertFile != "" {
clientConfig.CertFile = auth.CertFile
}
if auth.KeyFile != "" {
clientConfig.KeyFile = auth.KeyFile
}
if auth.BearerToken != "" {
clientConfig.BearerToken = auth.BearerToken
}
if auth.Insecure != nil {
clientConfig.Insecure = *auth.Insecure
}
}
kubeClient, err := client.New(clientConfig)
if err != nil {
glog.Fatalf("Can't configure client: %v", err)
}
if *serverVersion != verflag.VersionFalse {
got, err := kubeClient.ServerVersion()
if err != nil {
fmt.Printf("Couldn't read version from server: %v\n", err)
os.Exit(1)
}
if *serverVersion == verflag.VersionRaw {
fmt.Printf("%#v\n", *got)
os.Exit(0)
} else {
fmt.Printf("Server: Kubernetes %s\n", got)
os.Exit(0)
}
}
if *preventSkew {
got, err := kubeClient.ServerVersion()
if err != nil {
fmt.Printf("Couldn't read version from server: %v\n", err)
os.Exit(1)
}
if c, s := version.Get(), *got; !reflect.DeepEqual(c, s) {
fmt.Printf("Server version (%#v) differs from client version (%#v)!\n", s, c)
os.Exit(1)
}
}
if *proxy {
glog.Info("Starting to serve on localhost:8001")
if *openBrowser {
go func() {
time.Sleep(2 * time.Second)
open.Start("http://localhost:8001/static/")
}()
}
server, err := kubecfg.NewProxyServer(*www, clientConfig)
if err != nil {
glog.Fatalf("Error creating proxy server: %v", err)
}
glog.Fatal(server.Serve())
}
if len(flag.Args()) < 1 {
usage()
os.Exit(1)
}
method := flag.Arg(0)
matchFound := executeAPIRequest(ctx, method, kubeClient) || executeControllerRequest(ctx, method, kubeClient) || executeNamespaceRequest(method, kubeClient)
if matchFound == false {
glog.Fatalf("Unknown command %s", method)
}
}