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init.go
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init.go
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//go:build amd64 || arm64
package machine
import (
"fmt"
"os"
"github.com/containers/common/pkg/completion"
"github.com/containers/podman/v5/cmd/podman/registry"
ldefine "github.com/containers/podman/v5/libpod/define"
"github.com/containers/podman/v5/libpod/events"
"github.com/containers/podman/v5/pkg/machine"
"github.com/containers/podman/v5/pkg/machine/define"
"github.com/containers/podman/v5/pkg/machine/shim"
"github.com/containers/podman/v5/pkg/machine/vmconfigs"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var (
initCmd = &cobra.Command{
Use: "init [options] [NAME]",
Short: "Initialize a virtual machine",
Long: "Initialize a virtual machine",
PersistentPreRunE: machinePreRunE,
RunE: initMachine,
Args: cobra.MaximumNArgs(1),
Example: `podman machine init podman-machine-default`,
ValidArgsFunction: completion.AutocompleteNone,
}
initOpts = define.InitOptions{}
initOptionalFlags = InitOptionalFlags{}
defaultMachineName = machine.DefaultMachineName
now bool
)
// Flags which have a meaning when unspecified that differs from the flag default
type InitOptionalFlags struct {
UserModeNetworking 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()
cpusFlagName := "cpus"
flags.Uint64Var(
&initOpts.CPUS,
cpusFlagName, cfg.ContainersConfDefaultsRO.Machine.CPUs,
"Number of CPUs",
)
_ = initCmd.RegisterFlagCompletionFunc(cpusFlagName, completion.AutocompleteNone)
diskSizeFlagName := "disk-size"
flags.Uint64Var(
&initOpts.DiskSize,
diskSizeFlagName, cfg.ContainersConfDefaultsRO.Machine.DiskSize,
"Disk size in GiB",
)
_ = initCmd.RegisterFlagCompletionFunc(diskSizeFlagName, completion.AutocompleteNone)
memoryFlagName := "memory"
flags.Uint64VarP(
&initOpts.Memory,
memoryFlagName, "m", cfg.ContainersConfDefaultsRO.Machine.Memory,
"Memory in MiB",
)
_ = initCmd.RegisterFlagCompletionFunc(memoryFlagName, completion.AutocompleteNone)
flags.BoolVar(
&now,
"now", false,
"Start machine now",
)
timezoneFlagName := "timezone"
defaultTz := cfg.ContainersConfDefaultsRO.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")
UsernameFlagName := "username"
flags.StringVar(&initOpts.Username, UsernameFlagName, cfg.ContainersConfDefaultsRO.Machine.User, "Username used in image")
_ = initCmd.RegisterFlagCompletionFunc(UsernameFlagName, completion.AutocompleteDefault)
ImageFlagName := "image"
flags.StringVar(&initOpts.Image, ImageFlagName, cfg.ContainersConfDefaultsRO.Machine.Image, "Bootable image for machine")
_ = initCmd.RegisterFlagCompletionFunc(ImageFlagName, completion.AutocompleteDefault)
// Deprecate image-path option, use --image instead
ImagePathFlagName := "image-path"
flags.StringVar(&initOpts.Image, ImagePathFlagName, cfg.ContainersConfDefaultsRO.Machine.Image, "Bootable image for machine")
_ = initCmd.RegisterFlagCompletionFunc(ImagePathFlagName, completion.AutocompleteDefault)
if err := flags.MarkDeprecated(ImagePathFlagName, "use --image instead"); err != nil {
logrus.Error("unable to mark image-path flag deprecated")
}
VolumeFlagName := "volume"
flags.StringArrayVarP(&initOpts.Volumes, VolumeFlagName, "v", cfg.ContainersConfDefaultsRO.Machine.Volumes.Get(), "Volumes to mount, source:target")
_ = initCmd.RegisterFlagCompletionFunc(VolumeFlagName, completion.AutocompleteDefault)
USBFlagName := "usb"
flags.StringArrayVarP(&initOpts.USBs, USBFlagName, "", []string{},
"USB Host passthrough: bus=$1,devnum=$2 or vendor=$1,product=$2")
_ = initCmd.RegisterFlagCompletionFunc(USBFlagName, 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)
rootfulFlagName := "rootful"
flags.BoolVar(&initOpts.Rootful, rootfulFlagName, false, "Whether this machine should prefer rootful container execution")
userModeNetFlagName := "user-mode-networking"
flags.BoolVar(&initOptionalFlags.UserModeNetworking, userModeNetFlagName, false,
"Whether this machine should use user-mode networking, routing traffic through a host user-space process")
}
func initMachine(cmd *cobra.Command, args []string) error {
initOpts.Name = defaultMachineName
if len(args) > 0 {
if len(args[0]) > maxMachineNameSize {
return fmt.Errorf("machine name %q must be %d characters or less", args[0], maxMachineNameSize)
}
initOpts.Name = args[0]
if !ldefine.NameRegex.MatchString(initOpts.Name) {
return fmt.Errorf("invalid name %q: %w", initOpts.Name, ldefine.RegexError)
}
}
// The vmtype names need to be reserved and cannot be used for podman machine names
if _, err := define.ParseVMType(initOpts.Name, define.UnknownVirt); err == nil {
return fmt.Errorf("cannot use %q for a machine name", initOpts.Name)
}
if !ldefine.NameRegex.MatchString(initOpts.Username) {
return fmt.Errorf("invalid username %q: %w", initOpts.Username, ldefine.RegexError)
}
// Check if machine already exists
_, exists, err := shim.VMExists(initOpts.Name, []vmconfigs.VMProvider{provider})
if err != nil {
return err
}
// machine exists, return error
if exists {
return fmt.Errorf("%s: %w", initOpts.Name, define.ErrVMAlreadyExists)
}
// check if a system connection already exists
cons, err := registry.PodmanConfig().ContainersConfDefaultsRO.GetAllConnections()
if err != nil {
return err
}
for _, con := range cons {
if con.ReadWrite {
for _, connection := range []string{initOpts.Name, fmt.Sprintf("%s-root", initOpts.Name)} {
if con.Name == connection {
return fmt.Errorf("system connection %q already exists. consider a different machine name or remove the connection with `podman system connection rm`", connection)
}
}
}
}
for idx, vol := range initOpts.Volumes {
initOpts.Volumes[idx] = os.ExpandEnv(vol)
}
// Process optional flags (flags where unspecified / nil has meaning )
if cmd.Flags().Changed("user-mode-networking") {
initOpts.UserModeNetworking = &initOptionalFlags.UserModeNetworking
}
// TODO need to work this back in
// 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
// }
err = shim.Init(initOpts, provider)
if err != nil {
return err
}
newMachineEvent(events.Init, events.Event{Name: initOpts.Name})
fmt.Println("Machine init complete")
if now {
return start(cmd, args)
}
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
}