Warn if hyperkit version is old (#4691)

* Add warn if hyperkit driver version is old

* Add hyperkit upgrade documentation

* Improve kvm/hyperkit upgrade warn message

* Move validateDriverVersion to before downloading ISO

* Change executable to use constants

cmd/minikube/cmd/start.go

@@ -210,8 +210,10 @@ var startCmd = &cobra.Command{
 // runStart handles the executes the flow of "minikube start"
 func runStart(cmd *cobra.Command, args []string) {
 	out.T(out.Happy, "minikube {{.version}} on {{.os}} ({{.arch}})", out.V{"version": version.GetVersion(), "os": runtime.GOOS, "arch": runtime.GOARCH})
+
 	validateConfig()
 	validateUser()
+	validateDriverVersion(viper.GetString(vmDriver))
 
 	k8sVersion, isUpgrade := getKubernetesVersion()
 	config, err := generateConfig(cmd, k8sVersion)
@@ -235,7 +237,6 @@ func runStart(cmd *cobra.Command, args []string) {
 		exit.WithError("Failed to save config", err)
 	}
 
-	validateDriverVersion(viper.GetString(vmDriver))
 	// exits here in case of --download-only option.
 	handleDownloadOnly(&cacheGroup, k8sVersion)
 	mRunner, preExists, machineAPI, host := startMachine(&config)
@@ -904,39 +905,60 @@ func saveConfig(clusterConfig *cfg.Config) error {
 }
 
 func validateDriverVersion(vmDriver string) {
-	if vmDriver == constants.DriverKvm2 {
-		cmd := exec.Command("docker-machine-driver-kvm2", "version")
-		output, err := cmd.Output()
+	var (
+		driverExecutable    string
+		driverDocumentation string
+	)
+
+	switch vmDriver {
+	case constants.DriverKvm2:
+		driverExecutable = fmt.Sprintf("docker-machine-driver-%s", constants.DriverKvm2)
+		driverDocumentation = fmt.Sprintf("%s#%s", constants.DriverDocumentation, "kvm2-upgrade")
+	case constants.DriverHyperkit:
+		driverExecutable = fmt.Sprintf("docker-machine-driver-%s", constants.DriverHyperkit)
+		driverDocumentation = fmt.Sprintf("%s#%s", constants.DriverDocumentation, "hyperkit-upgrade")
+	default: // driver doesn't support version
+		return
+	}
 
-		// we don't want to fail if an error was returned,
-		// libmachine has a nice message for the user if the driver isn't present
-		if err != nil {
-			out.WarningT("Error checking driver version: {{.error}}", out.V{"error": err})
-			return
-		}
+	cmd := exec.Command(driverExecutable, "version")
+	output, err := cmd.Output()
 
-		v := extractVMDriverVersion(string(output))
+	// we don't want to fail if an error was returned,
+	// libmachine has a nice message for the user if the driver isn't present
+	if err != nil {
+		out.WarningT("Error checking driver version: {{.error}}", out.V{"error": err})
+		return
+	}
 
-		// if the driver doesn't have return any version, it is really old, we force a upgrade.
-		if len(v) == 0 {
-			exit.WithCodeT(exit.Failure, "Please upgrade the 'docker-machine-driver-kvm2'. {{.documentation_url}}", out.V{"documentation_url": constants.KVMDocumentation})
-		}
+	v := extractVMDriverVersion(string(output))
 
-		vmDriverVersion, err := semver.Make(v)
-		if err != nil {
-			out.WarningT("Error parsing vmDriver version: {{.error}}", out.V{"error": err})
-			return
-		}
+	// if the driver doesn't have return any version, it is really old, we force a upgrade.
+	if len(v) == 0 {
+		exit.WithCodeT(
+			exit.Failure,
+			"Please upgrade the '{{.driver_executable}}'. {{.documentation_url}}",
+			out.V{"driver_executable": driverExecutable, "documentation_url": driverDocumentation},
+		)
+	}
 
-		minikubeVersion, err := version.GetSemverVersion()
-		if err != nil {
-			out.WarningT("Error parsing minukube version: {{.error}}", out.V{"error": err})
-			return
-		}
+	vmDriverVersion, err := semver.Make(v)
+	if err != nil {
+		out.WarningT("Error parsing vmDriver version: {{.error}}", out.V{"error": err})
+		return
+	}
 
-		if vmDriverVersion.LT(minikubeVersion) {
-			out.WarningT("The 'docker-machine-driver-kvm2' version is old. Please consider upgrading. {{.documentation_url}}", out.V{"documentation_url": constants.KVMDocumentation})
-		}
+	minikubeVersion, err := version.GetSemverVersion()
+	if err != nil {
+		out.WarningT("Error parsing minukube version: {{.error}}", out.V{"error": err})
+		return
+	}
+
+	if vmDriverVersion.LT(minikubeVersion) {
+		out.WarningT(
+			"There's a new version for '{{.driver_executable}}'. Please consider upgrading. {{.documentation_url}}",
+			out.V{"driver_executable": driverExecutable, "documentation_url": driverDocumentation},
+		)
 	}
 }
 

docs/drivers.md

@@ -143,6 +143,13 @@ or, to use hyperkit as a default driver for minikube:
 minikube config set vm-driver hyperkit
 ```
 
+### Hyperkit upgrade
+
+```shell
+curl -LO https://storage.googleapis.com/minikube/releases/latest/docker-machine-driver-hyperkit \
+&& sudo install -o root -g wheel -m 4755 docker-machine-driver-hyperkit /usr/local/bin/
+```
+
 ### Hyperkit troubleshoot
 
 Make sure you are running the lastest version of your driver.

pkg/minikube/constants/constants.go

@@ -423,6 +423,6 @@ const (
 )
 
 const (
-	// KVMDocumentation the documentation of the KVM driver
-	KVMDocumentation = "https://github.com/kubernetes/minikube/blob/master/docs/drivers.md#kvm2-driver"
+	// DriverDocumentation the documentation of the KVM driver
+	DriverDocumentation = "https://github.com/kubernetes/minikube/blob/master/docs/drivers.md"
 )