524 lines
17 KiB
Go
524 lines
17 KiB
Go
package iso
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import (
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"errors"
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"fmt"
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"log"
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"os"
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"strings"
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hypervcommon "github.com/hashicorp/packer/builder/hyperv/common"
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"github.com/hashicorp/packer/common"
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powershell "github.com/hashicorp/packer/common/powershell"
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"github.com/hashicorp/packer/common/powershell/hyperv"
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"github.com/hashicorp/packer/helper/communicator"
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"github.com/hashicorp/packer/helper/config"
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"github.com/hashicorp/packer/packer"
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"github.com/hashicorp/packer/template/interpolate"
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"github.com/mitchellh/multistep"
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)
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const (
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DefaultDiskSize = 40 * 1024 // ~40GB
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MinDiskSize = 256 // 256MB
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MaxDiskSize = 64 * 1024 * 1024 // 64TB
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DefaultRamSize = 1 * 1024 // 1GB
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MinRamSize = 32 // 32MB
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MaxRamSize = 32 * 1024 // 32GB
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MinNestedVirtualizationRamSize = 4 * 1024 // 4GB
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LowRam = 256 // 256MB
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DefaultUsername = ""
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DefaultPassword = ""
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)
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// Builder implements packer.Builder and builds the actual Hyperv
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// images.
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type Builder struct {
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config Config
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runner multistep.Runner
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}
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type Config struct {
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common.PackerConfig `mapstructure:",squash"`
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common.HTTPConfig `mapstructure:",squash"`
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common.ISOConfig `mapstructure:",squash"`
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hypervcommon.FloppyConfig `mapstructure:",squash"`
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hypervcommon.OutputConfig `mapstructure:",squash"`
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hypervcommon.SSHConfig `mapstructure:",squash"`
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hypervcommon.RunConfig `mapstructure:",squash"`
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hypervcommon.ShutdownConfig `mapstructure:",squash"`
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// The size, in megabytes, of the hard disk to create for the VM.
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// By default, this is 130048 (about 127 GB).
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DiskSize uint `mapstructure:"disk_size"`
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// The size, in megabytes, of the computer memory in the VM.
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// By default, this is 1024 (about 1 GB).
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RamSize uint `mapstructure:"ram_size"`
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// A list of files to place onto a floppy disk that is attached when the
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// VM is booted. This is most useful for unattended Windows installs,
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// which look for an Autounattend.xml file on removable media. By default,
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// no floppy will be attached. All files listed in this setting get
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// placed into the root directory of the floppy and the floppy is attached
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// as the first floppy device. Currently, no support exists for creating
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// sub-directories on the floppy. Wildcard characters (*, ?, and [])
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// are allowed. Directory names are also allowed, which will add all
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// the files found in the directory to the floppy.
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FloppyFiles []string `mapstructure:"floppy_files"`
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//
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SecondaryDvdImages []string `mapstructure:"secondary_iso_images"`
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// Should integration services iso be mounted
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GuestAdditionsMode string `mapstructure:"guest_additions_mode"`
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// The path to the integration services iso
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GuestAdditionsPath string `mapstructure:"guest_additions_path"`
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// This is the name of the new virtual machine.
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// By default this is "packer-BUILDNAME", where "BUILDNAME" is the name of the build.
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VMName string `mapstructure:"vm_name"`
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BootCommand []string `mapstructure:"boot_command"`
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SwitchName string `mapstructure:"switch_name"`
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SwitchVlanId string `mapstructure:"switch_vlan_id"`
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VlanId string `mapstructure:"vlan_id"`
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Cpu uint `mapstructure:"cpu"`
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Generation uint `mapstructure:"generation"`
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EnableMacSpoofing bool `mapstructure:"enable_mac_spoofing"`
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EnableDynamicMemory bool `mapstructure:"enable_dynamic_memory"`
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EnableSecureBoot bool `mapstructure:"enable_secure_boot"`
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EnableVirtualizationExtensions bool `mapstructure:"enable_virtualization_extensions"`
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Communicator string `mapstructure:"communicator"`
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SkipCompaction bool `mapstructure:"skip_compaction"`
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ctx interpolate.Context
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}
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// Prepare processes the build configuration parameters.
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func (b *Builder) Prepare(raws ...interface{}) ([]string, error) {
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err := config.Decode(&b.config, &config.DecodeOpts{
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Interpolate: true,
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InterpolateFilter: &interpolate.RenderFilter{
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Exclude: []string{
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"boot_command",
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},
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},
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}, raws...)
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if err != nil {
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return nil, err
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}
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// Accumulate any errors and warnings
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var errs *packer.MultiError
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warnings := make([]string, 0)
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isoWarnings, isoErrs := b.config.ISOConfig.Prepare(&b.config.ctx)
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warnings = append(warnings, isoWarnings...)
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errs = packer.MultiErrorAppend(errs, isoErrs...)
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errs = packer.MultiErrorAppend(errs, b.config.FloppyConfig.Prepare(&b.config.ctx)...)
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errs = packer.MultiErrorAppend(errs, b.config.HTTPConfig.Prepare(&b.config.ctx)...)
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errs = packer.MultiErrorAppend(errs, b.config.RunConfig.Prepare(&b.config.ctx)...)
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errs = packer.MultiErrorAppend(errs, b.config.OutputConfig.Prepare(&b.config.ctx, &b.config.PackerConfig)...)
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errs = packer.MultiErrorAppend(errs, b.config.SSHConfig.Prepare(&b.config.ctx)...)
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errs = packer.MultiErrorAppend(errs, b.config.ShutdownConfig.Prepare(&b.config.ctx)...)
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err = b.checkDiskSize()
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if err != nil {
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errs = packer.MultiErrorAppend(errs, err)
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}
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err = b.checkRamSize()
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if err != nil {
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errs = packer.MultiErrorAppend(errs, err)
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}
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if b.config.VMName == "" {
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b.config.VMName = fmt.Sprintf("packer-%s", b.config.PackerBuildName)
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}
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log.Println(fmt.Sprintf("%s: %v", "VMName", b.config.VMName))
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if b.config.SwitchName == "" {
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b.config.SwitchName = b.detectSwitchName()
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}
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if b.config.Cpu < 1 {
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b.config.Cpu = 1
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}
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if b.config.Generation != 2 {
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b.config.Generation = 1
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}
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if b.config.Generation == 2 {
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if len(b.config.FloppyFiles) > 0 {
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err = errors.New("Generation 2 vms don't support floppy drives. Use ISO image instead.")
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errs = packer.MultiErrorAppend(errs, err)
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}
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}
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log.Println(fmt.Sprintf("Using switch %s", b.config.SwitchName))
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log.Println(fmt.Sprintf("%s: %v", "SwitchName", b.config.SwitchName))
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// Errors
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if b.config.GuestAdditionsMode == "" {
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if b.config.GuestAdditionsPath != "" {
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b.config.GuestAdditionsMode = "attach"
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} else {
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b.config.GuestAdditionsPath = os.Getenv("WINDIR") + "\\system32\\vmguest.iso"
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if _, err := os.Stat(b.config.GuestAdditionsPath); os.IsNotExist(err) {
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if err != nil {
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b.config.GuestAdditionsPath = ""
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b.config.GuestAdditionsMode = "none"
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} else {
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b.config.GuestAdditionsMode = "attach"
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}
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}
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}
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}
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if b.config.GuestAdditionsPath == "" && b.config.GuestAdditionsMode == "attach" {
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b.config.GuestAdditionsPath = os.Getenv("WINDIR") + "\\system32\\vmguest.iso"
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if _, err := os.Stat(b.config.GuestAdditionsPath); os.IsNotExist(err) {
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if err != nil {
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b.config.GuestAdditionsPath = ""
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}
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}
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}
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for _, isoPath := range b.config.SecondaryDvdImages {
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if _, err := os.Stat(isoPath); os.IsNotExist(err) {
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if err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Secondary Dvd image does not exist: %s", err))
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}
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}
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}
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numberOfIsos := len(b.config.SecondaryDvdImages)
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if b.config.GuestAdditionsMode == "attach" {
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if _, err := os.Stat(b.config.GuestAdditionsPath); os.IsNotExist(err) {
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if err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Guest additions iso does not exist: %s", err))
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}
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}
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numberOfIsos = numberOfIsos + 1
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}
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if b.config.Generation < 2 && numberOfIsos > 2 {
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if b.config.GuestAdditionsMode == "attach" {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("There are only 2 ide controllers available, so we can't support guest additions and these secondary dvds: %s", strings.Join(b.config.SecondaryDvdImages, ", ")))
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} else {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("There are only 2 ide controllers available, so we can't support these secondary dvds: %s", strings.Join(b.config.SecondaryDvdImages, ", ")))
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}
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} else if b.config.Generation > 1 && len(b.config.SecondaryDvdImages) > 16 {
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if b.config.GuestAdditionsMode == "attach" {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("There are not enough drive letters available for scsi (limited to 16), so we can't support guest additions and these secondary dvds: %s", strings.Join(b.config.SecondaryDvdImages, ", ")))
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} else {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("There are not enough drive letters available for scsi (limited to 16), so we can't support these secondary dvds: %s", strings.Join(b.config.SecondaryDvdImages, ", ")))
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}
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}
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if b.config.EnableVirtualizationExtensions {
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hasVirtualMachineVirtualizationExtensions, err := powershell.HasVirtualMachineVirtualizationExtensions()
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if err != nil {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("Failed detecting virtual machine virtualization extensions support: %s", err))
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} else {
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if !hasVirtualMachineVirtualizationExtensions {
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errs = packer.MultiErrorAppend(errs, fmt.Errorf("This version of Hyper-V does not support virtual machine virtualization extension. Please use Windows 10 or Windows Server 2016 or newer."))
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}
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}
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}
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// Warnings
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if b.config.ShutdownCommand == "" {
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warnings = append(warnings,
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"A shutdown_command was not specified. Without a shutdown command, Packer\n"+
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"will forcibly halt the virtual machine, which may result in data loss.")
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}
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warning := b.checkHostAvailableMemory()
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if warning != "" {
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warnings = appendWarnings(warnings, warning)
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}
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if b.config.EnableVirtualizationExtensions {
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if b.config.EnableDynamicMemory {
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warning = fmt.Sprintf("For nested virtualization, when virtualization extension is enabled, dynamic memory should not be allowed.")
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warnings = appendWarnings(warnings, warning)
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}
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if !b.config.EnableMacSpoofing {
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warning = fmt.Sprintf("For nested virtualization, when virtualization extension is enabled, mac spoofing should be allowed.")
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warnings = appendWarnings(warnings, warning)
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}
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if b.config.RamSize < MinNestedVirtualizationRamSize {
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warning = fmt.Sprintf("For nested virtualization, when virtualization extension is enabled, there should be 4GB or more memory set for the vm, otherwise Hyper-V may fail to start any nested VMs.")
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warnings = appendWarnings(warnings, warning)
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}
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}
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if b.config.SwitchVlanId != "" {
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if b.config.SwitchVlanId != b.config.VlanId {
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warning = fmt.Sprintf("Switch network adaptor vlan should match virtual machine network adaptor vlan. The switch will not be able to see traffic from the VM.")
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warnings = appendWarnings(warnings, warning)
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}
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}
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if errs != nil && len(errs.Errors) > 0 {
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return warnings, errs
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}
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return warnings, nil
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}
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// Run executes a Packer build and returns a packer.Artifact representing
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// a Hyperv appliance.
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func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packer.Artifact, error) {
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// Create the driver that we'll use to communicate with Hyperv
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driver, err := hypervcommon.NewHypervPS4Driver()
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if err != nil {
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return nil, fmt.Errorf("Failed creating Hyper-V driver: %s", err)
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}
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// Set up the state.
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state := new(multistep.BasicStateBag)
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state.Put("cache", cache)
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state.Put("config", &b.config)
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state.Put("debug", b.config.PackerDebug)
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state.Put("driver", driver)
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state.Put("hook", hook)
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state.Put("ui", ui)
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steps := []multistep.Step{
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&hypervcommon.StepCreateTempDir{},
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&hypervcommon.StepOutputDir{
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Force: b.config.PackerForce,
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Path: b.config.OutputDir,
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},
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&common.StepDownload{
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Checksum: b.config.ISOChecksum,
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ChecksumType: b.config.ISOChecksumType,
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Description: "ISO",
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ResultKey: "iso_path",
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Url: b.config.ISOUrls,
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Extension: b.config.TargetExtension,
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TargetPath: b.config.TargetPath,
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},
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&common.StepCreateFloppy{
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Files: b.config.FloppyFiles,
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},
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&common.StepHTTPServer{
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HTTPDir: b.config.HTTPDir,
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HTTPPortMin: b.config.HTTPPortMin,
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HTTPPortMax: b.config.HTTPPortMax,
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},
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&hypervcommon.StepCreateSwitch{
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SwitchName: b.config.SwitchName,
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},
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&hypervcommon.StepCreateVM{
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VMName: b.config.VMName,
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SwitchName: b.config.SwitchName,
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RamSize: b.config.RamSize,
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DiskSize: b.config.DiskSize,
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Generation: b.config.Generation,
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Cpu: b.config.Cpu,
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EnableMacSpoofing: b.config.EnableMacSpoofing,
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EnableDynamicMemory: b.config.EnableDynamicMemory,
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EnableSecureBoot: b.config.EnableSecureBoot,
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EnableVirtualizationExtensions: b.config.EnableVirtualizationExtensions,
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},
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&hypervcommon.StepEnableIntegrationService{},
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&hypervcommon.StepMountDvdDrive{
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Generation: b.config.Generation,
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},
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&hypervcommon.StepMountFloppydrive{
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Generation: b.config.Generation,
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},
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&hypervcommon.StepMountGuestAdditions{
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GuestAdditionsMode: b.config.GuestAdditionsMode,
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GuestAdditionsPath: b.config.GuestAdditionsPath,
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Generation: b.config.Generation,
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},
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&hypervcommon.StepMountSecondaryDvdImages{
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IsoPaths: b.config.SecondaryDvdImages,
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Generation: b.config.Generation,
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},
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&hypervcommon.StepConfigureVlan{
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VlanId: b.config.VlanId,
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SwitchVlanId: b.config.SwitchVlanId,
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},
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&hypervcommon.StepRun{
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BootWait: b.config.BootWait,
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},
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&hypervcommon.StepTypeBootCommand{
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BootCommand: b.config.BootCommand,
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SwitchName: b.config.SwitchName,
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Ctx: b.config.ctx,
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},
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// configure the communicator ssh, winrm
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&communicator.StepConnect{
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Config: &b.config.SSHConfig.Comm,
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Host: hypervcommon.CommHost,
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SSHConfig: hypervcommon.SSHConfigFunc(&b.config.SSHConfig),
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},
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// provision requires communicator to be setup
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&common.StepProvision{},
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&hypervcommon.StepShutdown{
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Command: b.config.ShutdownCommand,
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Timeout: b.config.ShutdownTimeout,
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},
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// wait for the vm to be powered off
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&hypervcommon.StepWaitForPowerOff{},
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// remove the secondary dvd images
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// after we power down
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&hypervcommon.StepUnmountSecondaryDvdImages{},
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&hypervcommon.StepUnmountGuestAdditions{},
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&hypervcommon.StepUnmountDvdDrive{},
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&hypervcommon.StepUnmountFloppyDrive{
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Generation: b.config.Generation,
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},
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&hypervcommon.StepExportVm{
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OutputDir: b.config.OutputDir,
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SkipCompaction: b.config.SkipCompaction,
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},
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// the clean up actions for each step will be executed reverse order
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}
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// Run the steps.
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if b.config.PackerDebug {
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pauseFn := common.MultistepDebugFn(ui)
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state.Put("pauseFn", pauseFn)
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b.runner = &multistep.DebugRunner{
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Steps: steps,
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PauseFn: pauseFn,
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}
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} else {
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b.runner = &multistep.BasicRunner{Steps: steps}
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}
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b.runner.Run(state)
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// Report any errors.
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if rawErr, ok := state.GetOk("error"); ok {
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return nil, rawErr.(error)
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}
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// If we were interrupted or cancelled, then just exit.
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if _, ok := state.GetOk(multistep.StateCancelled); ok {
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return nil, errors.New("Build was cancelled.")
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}
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if _, ok := state.GetOk(multistep.StateHalted); ok {
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return nil, errors.New("Build was halted.")
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}
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return hypervcommon.NewArtifact(b.config.OutputDir)
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}
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// Cancel.
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func (b *Builder) Cancel() {
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if b.runner != nil {
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log.Println("Cancelling the step runner...")
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b.runner.Cancel()
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}
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}
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func appendWarnings(slice []string, data ...string) []string {
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m := len(slice)
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n := m + len(data)
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if n > cap(slice) { // if necessary, reallocate
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// allocate double what's needed, for future growth.
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newSlice := make([]string, (n+1)*2)
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copy(newSlice, slice)
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slice = newSlice
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}
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slice = slice[0:n]
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copy(slice[m:n], data)
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return slice
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}
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func (b *Builder) checkDiskSize() error {
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if b.config.DiskSize == 0 {
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b.config.DiskSize = DefaultDiskSize
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}
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log.Println(fmt.Sprintf("%s: %v", "DiskSize", b.config.DiskSize))
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if b.config.DiskSize < MinDiskSize {
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return fmt.Errorf("disk_size: Virtual machine requires disk space >= %v GB, but defined: %v", MinDiskSize, b.config.DiskSize/1024)
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} else if b.config.DiskSize > MaxDiskSize {
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return fmt.Errorf("disk_size: Virtual machine requires disk space <= %v GB, but defined: %v", MaxDiskSize, b.config.DiskSize/1024)
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}
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return nil
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}
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func (b *Builder) checkRamSize() error {
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if b.config.RamSize == 0 {
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b.config.RamSize = DefaultRamSize
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}
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log.Println(fmt.Sprintf("%s: %v", "RamSize", b.config.RamSize))
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if b.config.RamSize < MinRamSize {
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return fmt.Errorf("ram_size: Virtual machine requires memory size >= %v MB, but defined: %v", MinRamSize, b.config.RamSize)
|
|
} else if b.config.RamSize > MaxRamSize {
|
|
return fmt.Errorf("ram_size: Virtual machine requires memory size <= %v MB, but defined: %v", MaxRamSize, b.config.RamSize)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (b *Builder) checkHostAvailableMemory() string {
|
|
powershellAvailable, _, _ := powershell.IsPowershellAvailable()
|
|
|
|
if powershellAvailable {
|
|
freeMB := powershell.GetHostAvailableMemory()
|
|
|
|
if (freeMB - float64(b.config.RamSize)) < LowRam {
|
|
return fmt.Sprintf("Hyper-V might fail to create a VM if there is not enough free memory in the system.")
|
|
}
|
|
}
|
|
|
|
return ""
|
|
}
|
|
|
|
func (b *Builder) detectSwitchName() string {
|
|
powershellAvailable, _, _ := powershell.IsPowershellAvailable()
|
|
|
|
if powershellAvailable {
|
|
// no switch name, try to get one attached to a online network adapter
|
|
onlineSwitchName, err := hyperv.GetExternalOnlineVirtualSwitch()
|
|
if onlineSwitchName != "" && err == nil {
|
|
return onlineSwitchName
|
|
}
|
|
}
|
|
|
|
return fmt.Sprintf("packer-%s", b.config.PackerBuildName)
|
|
}
|