Avoid provision.Detector when possible

pkg/minikube/machine/fix.go

@@ -60,21 +60,24 @@ func fixHost(api libmachine.API, cc config.ClusterConfig, n config.Node) (*host.
 		return h, errors.Wrap(err, "Error loading existing host. Please try running [minikube delete], then run [minikube start] again.")
 	}
 
+	driverName := h.Driver.DriverName()
+
 	// check if need to re-run docker-env
-	maybeWarnAboutEvalEnv(cc.Driver, cc.Name)
+	maybeWarnAboutEvalEnv(driverName, cc.Name)
 
 	h, err = recreateIfNeeded(api, cc, n, h)
 	if err != nil {
 		return h, err
 	}
 
-	// Technically, we should only have to call provision if Docker has changed,
-	// but who can predict what shape the existing VM is in.
-	e := engineOptions(cc)
-	h.HostOptions.EngineOptions.Env = e.Env
-	err = provisionDockerMachine(h)
-	if err != nil {
-		return h, errors.Wrap(err, "provision")
+	// Avoid reprovisioning "none" driver because provision.Detect requires SSH
+	if !driver.BareMetal(h.Driver.DriverName()) {
+		e := engineOptions(cc)
+		h.HostOptions.EngineOptions.Env = e.Env
+		err = provisionDockerMachine(h)
+		if err != nil {
+			return h, errors.Wrap(err, "provision")
+		}
 	}
 
 	if driver.IsMock(h.DriverName) {
@@ -86,11 +89,11 @@ func fixHost(api libmachine.API, cc config.ClusterConfig, n config.Node) (*host.
 	}
 
 	if driver.BareMetal(h.Driver.DriverName()) {
-		glog.Infof("%s is local, skipping auth/time setup (requires ssh)", h.Driver.DriverName())
+		glog.Infof("%s is local, skipping auth/time setup (requires ssh)", driverName)
 		return h, nil
 	}
 
-	return h, ensureSyncedGuestClock(h, cc.Driver)
+	return h, ensureSyncedGuestClock(h, driverName)
 }
 
 func recreateIfNeeded(api libmachine.API, cc config.ClusterConfig, n config.Node, h *host.Host) (*host.Host, error) {

pkg/minikube/machine/info.go

@@ -18,13 +18,14 @@ package machine
 
 import (
 	"io/ioutil"
+	"os/exec"
 
-	"github.com/docker/machine/libmachine/drivers"
 	"github.com/docker/machine/libmachine/provision"
 	"github.com/golang/glog"
 	"github.com/shirou/gopsutil/cpu"
 	"github.com/shirou/gopsutil/disk"
 	"github.com/shirou/gopsutil/mem"
+	"k8s.io/minikube/pkg/minikube/command"
 	"k8s.io/minikube/pkg/minikube/out"
 )
 
@@ -80,18 +81,17 @@ func showLocalOsRelease() {
 }
 
 // logRemoteOsRelease shows systemd information about the current linux distribution, on the remote VM
-func logRemoteOsRelease(drv drivers.Driver) {
-	provisioner, err := provision.DetectProvisioner(drv)
+func logRemoteOsRelease(r command.Runner) {
+	rr, err := r.RunCmd(exec.Command("cat", "/etc/os-release"))
 	if err != nil {
-		glog.Errorf("DetectProvisioner: %v", err)
-		return
+		glog.Infof("remote release failed: %v", err)
 	}
 
-	osReleaseInfo, err := provisioner.GetOsReleaseInfo()
+	osReleaseInfo, err := provision.NewOsRelease(rr.Stdout.Bytes())
 	if err != nil {
-		glog.Errorf("GetOsReleaseInfo: %v", err)
+		glog.Errorf("NewOsRelease: %v", err)
 		return
 	}
 
-	glog.Infof("Provisioned with %s", osReleaseInfo.PrettyName)
+	glog.Infof("Remote host: %s", osReleaseInfo.PrettyName)
 }

pkg/minikube/machine/start.go

@@ -212,7 +212,7 @@ func postStartSetup(h *host.Host, mc config.ClusterConfig) error {
 		showLocalOsRelease()
 	}
 	if driver.IsVM(mc.Driver) {
-		logRemoteOsRelease(h.Driver)
+		logRemoteOsRelease(r)
 	}
 	return syncLocalAssets(r)
 }