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moby--moby/daemon/daemon_windows.go
Alexander Morozov 9f1a121259 Merge pull request #22774 from Microsoft/jjh/client
Windows: Daemon default to Hyper-V containers on client
2016-05-23 11:29:50 -07:00

517 lines
15 KiB
Go

package daemon
import (
"encoding/json"
"errors"
"fmt"
"os"
"path/filepath"
"runtime"
"strings"
"github.com/Microsoft/hcsshim"
"github.com/Sirupsen/logrus"
"github.com/docker/docker/container"
"github.com/docker/docker/daemon/graphdriver"
"github.com/docker/docker/daemon/graphdriver/windows" // register the windows graph driver
"github.com/docker/docker/dockerversion"
"github.com/docker/docker/image"
"github.com/docker/docker/layer"
"github.com/docker/docker/pkg/idtools"
"github.com/docker/docker/pkg/parsers"
"github.com/docker/docker/pkg/sysinfo"
"github.com/docker/docker/pkg/system"
"github.com/docker/docker/reference"
"github.com/docker/docker/runconfig"
"github.com/docker/engine-api/types"
pblkiodev "github.com/docker/engine-api/types/blkiodev"
containertypes "github.com/docker/engine-api/types/container"
"github.com/docker/libnetwork"
nwconfig "github.com/docker/libnetwork/config"
winlibnetwork "github.com/docker/libnetwork/drivers/windows"
"github.com/docker/libnetwork/netlabel"
"github.com/docker/libnetwork/options"
blkiodev "github.com/opencontainers/runc/libcontainer/configs"
)
const (
defaultNetworkSpace = "172.16.0.0/12"
platformSupported = true
windowsMinCPUShares = 1
windowsMaxCPUShares = 10000
)
func getBlkioWeightDevices(config *containertypes.HostConfig) ([]blkiodev.WeightDevice, error) {
return nil, nil
}
func parseSecurityOpt(container *container.Container, config *containertypes.HostConfig) error {
return nil
}
func getBlkioReadIOpsDevices(config *containertypes.HostConfig) ([]blkiodev.ThrottleDevice, error) {
return nil, nil
}
func getBlkioWriteIOpsDevices(config *containertypes.HostConfig) ([]blkiodev.ThrottleDevice, error) {
return nil, nil
}
func getBlkioReadBpsDevices(config *containertypes.HostConfig) ([]blkiodev.ThrottleDevice, error) {
return nil, nil
}
func getBlkioWriteBpsDevices(config *containertypes.HostConfig) ([]blkiodev.ThrottleDevice, error) {
return nil, nil
}
func setupInitLayer(initLayer string, rootUID, rootGID int) error {
return nil
}
func checkKernel() error {
return nil
}
func (daemon *Daemon) getCgroupDriver() string {
return ""
}
// adaptContainerSettings is called during container creation to modify any
// settings necessary in the HostConfig structure.
func (daemon *Daemon) adaptContainerSettings(hostConfig *containertypes.HostConfig, adjustCPUShares bool) error {
if hostConfig == nil {
return nil
}
if hostConfig.CPUShares < 0 {
logrus.Warnf("Changing requested CPUShares of %d to minimum allowed of %d", hostConfig.CPUShares, windowsMinCPUShares)
hostConfig.CPUShares = windowsMinCPUShares
} else if hostConfig.CPUShares > windowsMaxCPUShares {
logrus.Warnf("Changing requested CPUShares of %d to maximum allowed of %d", hostConfig.CPUShares, windowsMaxCPUShares)
hostConfig.CPUShares = windowsMaxCPUShares
}
return nil
}
func verifyContainerResources(resources *containertypes.Resources, sysInfo *sysinfo.SysInfo) ([]string, error) {
warnings := []string{}
// cpu subsystem checks and adjustments
if resources.CPUPercent < 0 || resources.CPUPercent > 100 {
return warnings, fmt.Errorf("Range of CPU percent is from 1 to 100")
}
if resources.CPUPercent > 0 && resources.CPUShares > 0 {
return warnings, fmt.Errorf("Conflicting options: CPU Shares and CPU Percent cannot both be set")
}
// TODO Windows: Add more validation of resource settings not supported on Windows
if resources.BlkioWeight > 0 {
warnings = append(warnings, "Windows does not support Block I/O weight. Weight discarded.")
logrus.Warnf("Windows does not support Block I/O weight. --blkio-weight discarded.")
resources.BlkioWeight = 0
}
if len(resources.BlkioWeightDevice) > 0 {
warnings = append(warnings, "Windows does not support Block I/O weight_device.")
logrus.Warnf("Windows does not support Block I/O weight_device. --blkio-weight-device discarded.")
resources.BlkioWeightDevice = []*pblkiodev.WeightDevice{}
}
if len(resources.BlkioDeviceReadBps) > 0 {
warnings = append(warnings, "Windows does not support Block read limit in bytes per second.")
logrus.Warnf("Windows does not support Block I/O read limit in bytes per second. --device-read-bps discarded.")
resources.BlkioDeviceReadBps = []*pblkiodev.ThrottleDevice{}
}
if len(resources.BlkioDeviceWriteBps) > 0 {
warnings = append(warnings, "Windows does not support Block write limit in bytes per second.")
logrus.Warnf("Windows does not support Block I/O write limit in bytes per second. --device-write-bps discarded.")
resources.BlkioDeviceWriteBps = []*pblkiodev.ThrottleDevice{}
}
if len(resources.BlkioDeviceReadIOps) > 0 {
warnings = append(warnings, "Windows does not support Block read limit in IO per second.")
logrus.Warnf("Windows does not support Block I/O read limit in IO per second. -device-read-iops discarded.")
resources.BlkioDeviceReadIOps = []*pblkiodev.ThrottleDevice{}
}
if len(resources.BlkioDeviceWriteIOps) > 0 {
warnings = append(warnings, "Windows does not support Block write limit in IO per second.")
logrus.Warnf("Windows does not support Block I/O write limit in IO per second. --device-write-iops discarded.")
resources.BlkioDeviceWriteIOps = []*pblkiodev.ThrottleDevice{}
}
return warnings, nil
}
// verifyPlatformContainerSettings performs platform-specific validation of the
// hostconfig and config structures.
func verifyPlatformContainerSettings(daemon *Daemon, hostConfig *containertypes.HostConfig, config *containertypes.Config, update bool) ([]string, error) {
warnings := []string{}
w, err := verifyContainerResources(&hostConfig.Resources, nil)
warnings = append(warnings, w...)
if err != nil {
return warnings, err
}
return warnings, nil
}
// verifyDaemonSettings performs validation of daemon config struct
func verifyDaemonSettings(config *Config) error {
return nil
}
// checkSystem validates platform-specific requirements
func checkSystem() error {
// Validate the OS version. Note that docker.exe must be manifested for this
// call to return the correct version.
osv := system.GetOSVersion()
if osv.MajorVersion < 10 {
return fmt.Errorf("This version of Windows does not support the docker daemon")
}
if osv.Build < 14300 {
return fmt.Errorf("The Windows daemon requires Windows Server 2016 Technical Preview 5 build 14300 or later")
}
return nil
}
// configureKernelSecuritySupport configures and validate security support for the kernel
func configureKernelSecuritySupport(config *Config, driverName string) error {
return nil
}
// configureMaxThreads sets the Go runtime max threads threshold
func configureMaxThreads(config *Config) error {
return nil
}
func (daemon *Daemon) initNetworkController(config *Config) (libnetwork.NetworkController, error) {
netOptions, err := daemon.networkOptions(config)
if err != nil {
return nil, err
}
controller, err := libnetwork.New(netOptions...)
if err != nil {
return nil, fmt.Errorf("error obtaining controller instance: %v", err)
}
hnsresponse, err := hcsshim.HNSListNetworkRequest("GET", "", "")
if err != nil {
return nil, err
}
// Remove networks not present in HNS
for _, v := range controller.Networks() {
options := v.Info().DriverOptions()
hnsid := options[winlibnetwork.HNSID]
found := false
for _, v := range hnsresponse {
if v.Id == hnsid {
found = true
break
}
}
if !found {
err = v.Delete()
if err != nil {
return nil, err
}
}
}
_, err = controller.NewNetwork("null", "none", "", libnetwork.NetworkOptionPersist(false))
if err != nil {
return nil, err
}
// discover and add HNS networks to windows
// network that exist are removed and added again
for _, v := range hnsresponse {
var n libnetwork.Network
s := func(current libnetwork.Network) bool {
options := current.Info().DriverOptions()
if options[winlibnetwork.HNSID] == v.Id {
n = current
return true
}
return false
}
controller.WalkNetworks(s)
if n != nil {
v.Name = n.Name()
n.Delete()
}
netOption := map[string]string{
winlibnetwork.NetworkName: v.Name,
winlibnetwork.HNSID: v.Id,
}
v4Conf := []*libnetwork.IpamConf{}
for _, subnet := range v.Subnets {
ipamV4Conf := libnetwork.IpamConf{}
ipamV4Conf.PreferredPool = subnet.AddressPrefix
ipamV4Conf.Gateway = subnet.GatewayAddress
v4Conf = append(v4Conf, &ipamV4Conf)
}
name := v.Name
// There is only one nat network supported in windows.
// If it exists with a different name add it as the default name
if runconfig.DefaultDaemonNetworkMode() == containertypes.NetworkMode(strings.ToLower(v.Type)) {
name = runconfig.DefaultDaemonNetworkMode().NetworkName()
}
v6Conf := []*libnetwork.IpamConf{}
_, err := controller.NewNetwork(strings.ToLower(v.Type), name, "",
libnetwork.NetworkOptionGeneric(options.Generic{
netlabel.GenericData: netOption,
}),
libnetwork.NetworkOptionIpam("default", "", v4Conf, v6Conf, nil),
)
if err != nil {
logrus.Errorf("Error occurred when creating network %v", err)
}
}
if !config.DisableBridge {
// Initialize default driver "bridge"
if err := initBridgeDriver(controller, config); err != nil {
return nil, err
}
}
return controller, nil
}
func initBridgeDriver(controller libnetwork.NetworkController, config *Config) error {
if _, err := controller.NetworkByName(runconfig.DefaultDaemonNetworkMode().NetworkName()); err == nil {
return nil
}
netOption := map[string]string{
winlibnetwork.NetworkName: runconfig.DefaultDaemonNetworkMode().NetworkName(),
}
ipamV4Conf := libnetwork.IpamConf{}
if config.bridgeConfig.FixedCIDR == "" {
ipamV4Conf.PreferredPool = defaultNetworkSpace
} else {
ipamV4Conf.PreferredPool = config.bridgeConfig.FixedCIDR
}
v4Conf := []*libnetwork.IpamConf{&ipamV4Conf}
v6Conf := []*libnetwork.IpamConf{}
_, err := controller.NewNetwork(string(runconfig.DefaultDaemonNetworkMode()), runconfig.DefaultDaemonNetworkMode().NetworkName(), "",
libnetwork.NetworkOptionGeneric(options.Generic{
netlabel.GenericData: netOption,
}),
libnetwork.NetworkOptionIpam("default", "", v4Conf, v6Conf, nil),
)
if err != nil {
return fmt.Errorf("Error creating default network: %v", err)
}
return nil
}
// registerLinks sets up links between containers and writes the
// configuration out for persistence. As of Windows TP4, links are not supported.
func (daemon *Daemon) registerLinks(container *container.Container, hostConfig *containertypes.HostConfig) error {
return nil
}
func (daemon *Daemon) cleanupMountsByID(in string) error {
return nil
}
func (daemon *Daemon) cleanupMounts() error {
return nil
}
func setupRemappedRoot(config *Config) ([]idtools.IDMap, []idtools.IDMap, error) {
return nil, nil, nil
}
func setupDaemonRoot(config *Config, rootDir string, rootUID, rootGID int) error {
config.Root = rootDir
// Create the root directory if it doesn't exists
if err := system.MkdirAll(config.Root, 0700); err != nil && !os.IsExist(err) {
return err
}
return nil
}
// runasHyperVContainer returns true if we are going to run as a Hyper-V container
func (daemon *Daemon) runAsHyperVContainer(container *container.Container) bool {
if container.HostConfig.Isolation.IsDefault() {
// Container is set to use the default, so take the default from the daemon configuration
return daemon.defaultIsolation.IsHyperV()
}
// Container is requesting an isolation mode. Honour it.
return container.HostConfig.Isolation.IsHyperV()
}
// conditionalMountOnStart is a platform specific helper function during the
// container start to call mount.
func (daemon *Daemon) conditionalMountOnStart(container *container.Container) error {
// We do not mount if a Hyper-V container
if !daemon.runAsHyperVContainer(container) {
return daemon.Mount(container)
}
return nil
}
// conditionalUnmountOnCleanup is a platform specific helper function called
// during the cleanup of a container to unmount.
func (daemon *Daemon) conditionalUnmountOnCleanup(container *container.Container) error {
// We do not unmount if a Hyper-V container
if !daemon.runAsHyperVContainer(container) {
return daemon.Unmount(container)
}
return nil
}
func restoreCustomImage(is image.Store, ls layer.Store, rs reference.Store) error {
type graphDriverStore interface {
GraphDriver() graphdriver.Driver
}
gds, ok := ls.(graphDriverStore)
if !ok {
return nil
}
driver := gds.GraphDriver()
wd, ok := driver.(*windows.Driver)
if !ok {
return nil
}
imageInfos, err := wd.GetCustomImageInfos()
if err != nil {
return err
}
// Convert imageData to valid image configuration
for _, info := range imageInfos {
name := strings.ToLower(info.Name)
type registrar interface {
RegisterDiffID(graphID string, size int64) (layer.Layer, error)
}
r, ok := ls.(registrar)
if !ok {
return errors.New("Layerstore doesn't support RegisterDiffID")
}
if _, err := r.RegisterDiffID(info.ID, info.Size); err != nil {
return err
}
// layer is intentionally not released
rootFS := image.NewRootFSWithBaseLayer(filepath.Base(info.Path))
// Create history for base layer
config, err := json.Marshal(&image.Image{
V1Image: image.V1Image{
DockerVersion: dockerversion.Version,
Architecture: runtime.GOARCH,
OS: runtime.GOOS,
Created: info.CreatedTime,
},
RootFS: rootFS,
History: []image.History{},
OSVersion: info.OSVersion,
OSFeatures: info.OSFeatures,
})
named, err := reference.ParseNamed(name)
if err != nil {
return err
}
ref, err := reference.WithTag(named, info.Version)
if err != nil {
return err
}
id, err := is.Create(config)
if err != nil {
logrus.Warnf("Failed to restore custom image %s with error: %s.", name, err)
logrus.Warnf("Skipping image %s...", name)
continue
}
if err := rs.AddTag(ref, id, true); err != nil {
return err
}
logrus.Debugf("Registered base layer %s as %s", ref, id)
}
return nil
}
func driverOptions(config *Config) []nwconfig.Option {
return []nwconfig.Option{}
}
func (daemon *Daemon) stats(c *container.Container) (*types.StatsJSON, error) {
return nil, nil
}
// setDefaultIsolation determine the default isolation mode for the
// daemon to run in. This is only applicable on Windows
func (daemon *Daemon) setDefaultIsolation() error {
daemon.defaultIsolation = containertypes.Isolation("process")
// On client SKUs, default to Hyper-V
if system.IsWindowsClient() {
daemon.defaultIsolation = containertypes.Isolation("hyperv")
}
for _, option := range daemon.configStore.ExecOptions {
key, val, err := parsers.ParseKeyValueOpt(option)
if err != nil {
return err
}
key = strings.ToLower(key)
switch key {
case "isolation":
if !containertypes.Isolation(val).IsValid() {
return fmt.Errorf("Invalid exec-opt value for 'isolation':'%s'", val)
}
if containertypes.Isolation(val).IsHyperV() {
daemon.defaultIsolation = containertypes.Isolation("hyperv")
}
if containertypes.Isolation(val).IsProcess() {
if system.IsWindowsClient() {
return fmt.Errorf("Windows client operating systems only support Hyper-V containers")
}
daemon.defaultIsolation = containertypes.Isolation("process")
}
default:
return fmt.Errorf("Unrecognised exec-opt '%s'\n", key)
}
}
logrus.Infof("Windows default isolation mode: %s", daemon.defaultIsolation)
return nil
}
func rootFSToAPIType(rootfs *image.RootFS) types.RootFS {
var layers []string
for _, l := range rootfs.DiffIDs {
layers = append(layers, l.String())
}
return types.RootFS{
Type: rootfs.Type,
Layers: layers,
BaseLayer: rootfs.BaseLayer,
}
}