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|
//go:build amd64 || arm64
// +build amd64 arm64
package machine
import (
"fmt"
"os"
"github.com/containers/common/pkg/completion"
"github.com/containers/podman/v4/cmd/podman/registry"
"github.com/containers/podman/v4/pkg/machine"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
)
var (
initCmd = &cobra.Command{
Use: "init [options] [NAME]",
Short: "Initialize a virtual machine",
Long: "initialize a virtual machine ",
RunE: initMachine,
Args: cobra.MaximumNArgs(1),
Example: `podman machine init myvm`,
ValidArgsFunction: completion.AutocompleteNone,
}
)
var (
initOpts = machine.InitOptions{}
defaultMachineName = machine.DefaultMachineName
now bool
)
// maxMachineNameSize is set to thirty to limit huge machine names primarily
// because macos has a much smaller file size limit.
const maxMachineNameSize = 30
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: initCmd,
Parent: machineCmd,
})
flags := initCmd.Flags()
cfg := registry.PodmanConfig()
initOpts.Username = cfg.Config.Machine.User
cpusFlagName := "cpus"
flags.Uint64Var(
&initOpts.CPUS,
cpusFlagName, cfg.Machine.CPUs,
"Number of CPUs",
)
_ = initCmd.RegisterFlagCompletionFunc(cpusFlagName, completion.AutocompleteNone)
diskSizeFlagName := "disk-size"
flags.Uint64Var(
&initOpts.DiskSize,
diskSizeFlagName, cfg.Machine.DiskSize,
"Disk size in GB",
)
_ = initCmd.RegisterFlagCompletionFunc(diskSizeFlagName, completion.AutocompleteNone)
memoryFlagName := "memory"
flags.Uint64VarP(
&initOpts.Memory,
memoryFlagName, "m", cfg.Machine.Memory,
"Memory in MB",
)
_ = initCmd.RegisterFlagCompletionFunc(memoryFlagName, completion.AutocompleteNone)
flags.BoolVar(
&now,
"now", false,
"Start machine now",
)
timezoneFlagName := "timezone"
defaultTz := cfg.TZ()
if len(defaultTz) < 1 {
defaultTz = "local"
}
flags.StringVar(&initOpts.TimeZone, timezoneFlagName, defaultTz, "Set timezone")
_ = initCmd.RegisterFlagCompletionFunc(timezoneFlagName, completion.AutocompleteDefault)
flags.BoolVar(
&initOpts.ReExec,
"reexec", false,
"process was rexeced",
)
_ = flags.MarkHidden("reexec")
ImagePathFlagName := "image-path"
flags.StringVar(&initOpts.ImagePath, ImagePathFlagName, cfg.Machine.Image, "Path to qcow image")
_ = initCmd.RegisterFlagCompletionFunc(ImagePathFlagName, completion.AutocompleteDefault)
VolumeFlagName := "volume"
flags.StringArrayVarP(&initOpts.Volumes, VolumeFlagName, "v", cfg.Machine.Volumes, "Volumes to mount, source:target")
_ = initCmd.RegisterFlagCompletionFunc(VolumeFlagName, completion.AutocompleteDefault)
VolumeDriverFlagName := "volume-driver"
flags.StringVar(&initOpts.VolumeDriver, VolumeDriverFlagName, "", "Optional volume driver")
_ = initCmd.RegisterFlagCompletionFunc(VolumeDriverFlagName, completion.AutocompleteDefault)
IgnitionPathFlagName := "ignition-path"
flags.StringVar(&initOpts.IgnitionPath, IgnitionPathFlagName, "", "Path to ignition file")
_ = initCmd.RegisterFlagCompletionFunc(IgnitionPathFlagName, completion.AutocompleteDefault)
rootfullFlagName := "rootfull"
flags.BoolVar(&initOpts.Rootfull, rootfullFlagName, false, "Whether this machine should prefer rootfull container execution")
flags.SetNormalizeFunc(aliasFlags)
}
// aliasFlags is a function to handle backwards compatibility with old flags
func aliasFlags(f *pflag.FlagSet, name string) pflag.NormalizedName {
switch name {
case "rootful":
name = "rootfull"
}
return pflag.NormalizedName(name)
}
// TODO should we allow for a users to append to the qemu cmdline?
func initMachine(cmd *cobra.Command, args []string) error {
var (
err error
vm machine.VM
)
provider := getSystemDefaultProvider()
initOpts.Name = defaultMachineName
if len(args) > 0 {
if len(args[0]) > maxMachineNameSize {
return errors.New("machine name must be 30 characters or less")
}
initOpts.Name = args[0]
}
if _, err := provider.LoadVMByName(initOpts.Name); err == nil {
return errors.Wrap(machine.ErrVMAlreadyExists, initOpts.Name)
}
for idx, vol := range initOpts.Volumes {
initOpts.Volumes[idx] = os.ExpandEnv(vol)
}
vm, err = provider.NewMachine(initOpts)
if err != nil {
return err
}
if finished, err := vm.Init(initOpts); err != nil || !finished {
// Finished = true, err = nil - Success! Log a message with further instructions
// Finished = false, err = nil - The installation is partially complete and podman should
// exit gracefully with no error and no success message.
// Examples:
// - a user has chosen to perform their own reboot
// - reexec for limited admin operations, returning to parent
// Finished = *, err != nil - Exit with an error message
return err
}
fmt.Println("Machine init complete")
if now {
err = vm.Start(initOpts.Name, machine.StartOptions{})
if err == nil {
fmt.Printf("Machine %q started successfully\n", initOpts.Name)
}
} else {
extra := ""
if initOpts.Name != defaultMachineName {
extra = " " + initOpts.Name
}
fmt.Printf("To start your machine run:\n\n\tpodman machine start%s\n\n", extra)
}
return err
}
|
