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create_cluster_minishift.go
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create_cluster_minishift.go
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package cmd
import (
"bytes"
"io"
"os"
"os/exec"
"runtime"
"strings"
"github.com/jenkins-x/jx/pkg/jx/cmd/templates"
cmdutil "github.com/jenkins-x/jx/pkg/jx/cmd/util"
"github.com/jenkins-x/jx/pkg/log"
"github.com/jenkins-x/jx/pkg/util"
"github.com/spf13/cobra"
"gopkg.in/AlecAivazis/survey.v1"
)
// CreateClusterMinishiftOptions the flags for running create cluster
type CreateClusterMinishiftOptions struct {
CreateClusterOptions
Flags CreateClusterMinishiftFlags
Provider KubernetesProvider
}
type CreateClusterMinishiftFlags struct {
Memory string
CPU string
Driver string
HyperVVirtualSwitch string
Namespace string
}
var (
createClusterMinishiftLong = templates.LongDesc(`
This command creates a new kubernetes cluster, installing required local dependencies and provisions the
Jenkins X platform
Minishift is a tool that makes it easy to run OpenShift locally. Minishift runs a single-node OpenShift
cluster inside a VM on your laptop for users looking to try out Kubernetes or develop with it day-to-day.
`)
createClusterMinishiftExample = templates.Examples(`
jx create cluster minishift
`)
)
// NewCmdGet creates a command object for the generic "init" action, which
// installs the dependencies required to run the jenkins-x platform on a kubernetes cluster.
func NewCmdCreateClusterMinishift(f cmdutil.Factory, out io.Writer, errOut io.Writer) *cobra.Command {
options := CreateClusterMinishiftOptions{
CreateClusterOptions: createCreateClusterOptions(f, out, errOut, MINISHIFT),
}
cmd := &cobra.Command{
Use: "minishift",
Short: "Create a new OpenShift cluster with minishift: Runs locally",
Long: createClusterMinishiftLong,
Example: createClusterMinishiftExample,
Run: func(cmd *cobra.Command, args []string) {
options.Cmd = cmd
options.Args = args
err := options.Run()
cmdutil.CheckErr(err)
},
}
options.addCreateClusterFlags(cmd)
options.addCommonFlags(cmd)
cmd.Flags().StringVarP(&options.Flags.Memory, "memory", "m", "4096", "Amount of RAM allocated to the minishift VM in MB")
cmd.Flags().StringVarP(&options.Flags.CPU, "cpu", "c", "3", "Number of CPUs allocated to the minishift VM")
cmd.Flags().StringVarP(&options.Flags.Driver, "vm-driver", "d", "", "VM driver is one of: [virtualbox xhyve vmwarefusion hyperkit]")
cmd.Flags().StringVarP(&options.Flags.HyperVVirtualSwitch, "hyperv-virtual-switch", "v", "", "Additional options for using HyperV with minishift")
return cmd
}
func (o *CreateClusterMinishiftOptions) Run() error {
var deps []string
d := binaryShouldBeInstalled("minishift")
if d != "" {
deps = append(deps, d)
}
d = binaryShouldBeInstalled("oc")
if d != "" {
deps = append(deps, d)
}
err := o.installMissingDependencies(deps)
if err != nil {
log.Errorf("error installing missing dependencies %v, please fix or install manually then try again", err)
os.Exit(-1)
}
if o.isExistingMinishiftRunning() {
log.Error("an existing minishift cluster is already running, perhaps use `jx install`.\nNote existing minishift musty have RBAC enabled, running `minishift delete` and `jx create cluster minishift` creates a new VM with RBAC enabled")
os.Exit(-1)
}
err = o.createClusterMinishift()
if err != nil {
log.Errorf("error creating cluster %v", err)
os.Exit(-1)
}
return nil
}
func (o *CreateClusterMinishiftOptions) defaultMacVMDriver() string {
return "xhyve"
}
func (o *CreateClusterMinishiftOptions) isExistingMinishiftRunning() bool {
var cmd_out bytes.Buffer
e := exec.Command("minishift", "status")
e.Stdout = &cmd_out
e.Stderr = o.Err
err := e.Run()
if err != nil {
return false
}
if strings.Contains(cmd_out.String(), "Running") {
return true
}
return false
}
func (o *CreateClusterMinishiftOptions) createClusterMinishift() error {
mem := o.Flags.Memory
prompt := &survey.Input{
Message: "memory (MB)",
Default: mem,
Help: "Amount of RAM allocated to the minishift VM in MB",
}
survey.AskOne(prompt, &mem, nil)
cpu := o.Flags.CPU
prompt = &survey.Input{
Message: "cpu (cores)",
Default: cpu,
Help: "Number of CPUs allocated to the minishift VM",
}
survey.AskOne(prompt, &cpu, nil)
vmDriverValue := o.Flags.Driver
if len(vmDriverValue) == 0 {
switch runtime.GOOS {
case "darwin":
vmDriverValue = o.defaultMacVMDriver()
case "windows":
vmDriverValue = "hyperv"
case "linux":
vmDriverValue = "kvm"
default:
vmDriverValue = "virtualbox"
}
}
// only add drivers that are appropriate for this OS
var driver string
drivers := []string{vmDriverValue}
if vmDriverValue != "virtualbox" {
drivers = append(drivers, "virtualbox")
}
if runtime.GOOS == "darwin" {
if util.StringArrayIndex(drivers, "xhyve") < 0 {
drivers = append(drivers, "xhyve")
}
}
if runtime.GOOS == "linux" {
drivers = append(drivers, "none")
}
prompts := &survey.Select{
Message: "Select driver:",
Options: drivers,
Default: vmDriverValue,
Help: "VM driver, defaults to recommended native virtualisation",
}
err := survey.AskOne(prompts, &driver, nil)
if err != nil {
return err
}
if driver != "none" {
err = o.doInstallMissingDependencies([]string{driver})
if err != nil {
log.Errorf("error installing missing dependencies %v, please fix or install manually then try again", err)
os.Exit(-1)
}
}
log.Info("Installing default addons ...\n")
err = o.runCommand("minishift", "addons", "install", "--defaults")
if err != nil {
return err
}
log.Info("Enabling admin user...\n")
err = o.runCommand("minishift", "addons", "enable", "admin-user")
if err != nil {
return err
}
args := []string{"start", "--memory", mem, "--cpus", cpu, "--vm-driver", driver}
hyperVVirtualSwitch := o.Flags.HyperVVirtualSwitch
if hyperVVirtualSwitch != "" {
args = append(args, "--hyperv-virtual-switch", hyperVVirtualSwitch)
}
log.Info("Creating cluster...\n")
err = o.runCommand("minishift", args...)
if err != nil {
return err
}
ip, err := o.getCommandOutput("", "minishift", "ip")
if err != nil {
return err
}
o.InstallOptions.Flags.Domain = ip + ".nip.io"
err = o.runCommand("oc", "login", "-u", "admin", "-p", "admin", "--insecure-skip-tls-verify=true")
if err != nil {
return err
}
ns := o.Flags.Namespace
if ns == "" {
_, ns, _ = o.KubeClient()
if err != nil {
return err
}
}
log.Info("Initialising cluster ...\n")
err = o.initAndInstall(MINISHIFT)
if err != nil {
return err
}
return nil
}