func (daemon *Daemon) updateNetworkSettings(container *container.Container, n libnetwork.Network) error {
if container.NetworkSettings == nil {
container.NetworkSettings = &network.Settings{Networks: make(map[string]*networktypes.EndpointSettings)}
}
if !container.HostConfig.NetworkMode.IsHost() && containertypes.NetworkMode(n.Type()).IsHost() {
return runconfig.ErrConflictHostNetwork
}
for s := range container.NetworkSettings.Networks {
sn, err := daemon.FindNetwork(s)
if err != nil {
continue
}
if sn.Name() == n.Name() {
// Avoid duplicate config
return nil
}
if !containertypes.NetworkMode(sn.Type()).IsPrivate() ||
!containertypes.NetworkMode(n.Type()).IsPrivate() {
return runconfig.ErrConflictSharedNetwork
}
if containertypes.NetworkMode(sn.Name()).IsNone() ||
containertypes.NetworkMode(n.Name()).IsNone() {
return runconfig.ErrConflictNoNetwork
}
}
container.NetworkSettings.Networks[n.Name()] = new(networktypes.EndpointSettings)
return nil
}
// SetDefaultNetModeIfBlank changes the NetworkMode in a HostConfig structure
// to default if it is not populated. This ensures backwards compatibility after
// the validation of the network mode was moved from the docker CLI to the
// docker daemon.
func SetDefaultNetModeIfBlank(hc *container.HostConfig) *container.HostConfig {
if hc != nil {
if hc.NetworkMode == container.NetworkMode("") {
hc.NetworkMode = container.NetworkMode("default")
}
}
return hc
}
func (daemon *Daemon) updateNetworkConfig(container *container.Container, n libnetwork.Network, endpointConfig *networktypes.EndpointSettings, updateSettings bool) error {
if !containertypes.NetworkMode(n.Name()).IsUserDefined() {
if hasUserDefinedIPAddress(endpointConfig) && !enableIPOnPredefinedNetwork() {
return runconfig.ErrUnsupportedNetworkAndIP
}
if endpointConfig != nil && len(endpointConfig.Aliases) > 0 && !container.EnableServiceDiscoveryOnDefaultNetwork() {
return runconfig.ErrUnsupportedNetworkAndAlias
}
} else {
addShortID := true
shortID := stringid.TruncateID(container.ID)
for _, alias := range endpointConfig.Aliases {
if alias == shortID {
addShortID = false
break
}
}
if addShortID {
endpointConfig.Aliases = append(endpointConfig.Aliases, shortID)
}
}
if err := validateNetworkingConfig(n, endpointConfig); err != nil {
return err
}
if updateSettings {
if err := daemon.updateNetworkSettings(container, n, endpointConfig); err != nil {
return err
}
}
return nil
}
func (daemon *Daemon) updateEndpointNetworkSettings(container *container.Container, n libnetwork.Network, ep libnetwork.Endpoint) error {
if err := container.BuildEndpointInfo(n, ep); err != nil {
return err
}
if container.HostConfig.NetworkMode == containertypes.NetworkMode("bridge") {
container.NetworkSettings.Bridge = daemon.configStore.Bridge.Iface
}
return nil
}
// DisconnectFromNetwork disconnects container from network n.
func (daemon *Daemon) DisconnectFromNetwork(container *container.Container, n libnetwork.Network) error {
if !container.Running {
return derr.ErrorCodeNotRunning.WithArgs(container.ID)
}
if container.HostConfig.NetworkMode.IsHost() && containertypes.NetworkMode(n.Type()).IsHost() {
return runconfig.ErrConflictHostNetwork
}
return disconnectFromNetwork(container, n)
}
func createLaunchConfig(r *RancherService, name string, serviceConfig *config.ServiceConfig) (client.LaunchConfig, error) {
var result client.LaunchConfig
rancherConfig := r.context.RancherConfig[name]
schemasUrl := strings.SplitN(r.Context().Client.GetSchemas().Links["self"], "/schemas", 2)[0]
scriptsUrl := schemasUrl + "/scripts/transform"
config, hostConfig, err := service.Convert(serviceConfig, r.context.Context)
if err != nil {
return result, err
}
dockerContainer := &ContainerInspect{
Config: config,
HostConfig: hostConfig,
}
dockerContainer.HostConfig.NetworkMode = container.NetworkMode("")
dockerContainer.Name = "/" + name
err = r.Context().Client.Post(scriptsUrl, dockerContainer, &result)
if err != nil {
return result, err
}
result.VolumeDriver = hostConfig.VolumeDriver
setupNetworking(serviceConfig.NetworkMode, &result)
setupVolumesFrom(serviceConfig.VolumesFrom, &result)
err = setupBuild(r, name, &result, serviceConfig)
if result.Labels == nil {
result.Labels = map[string]interface{}{}
}
result.Kind = rancherConfig.Type
result.Vcpu = int64(rancherConfig.Vcpu)
result.Userdata = rancherConfig.Userdata
result.MemoryMb = int64(rancherConfig.Memory)
result.Disks = rancherConfig.Disks
if strings.EqualFold(result.Kind, "virtual_machine") || strings.EqualFold(result.Kind, "virtualmachine") {
result.Kind = "virtualMachine"
}
if result.LogConfig.Config == nil {
result.LogConfig.Config = map[string]interface{}{}
}
return result, err
}
// createRoach creates the docker container for a testNode. It may be called in
// parallel to start many nodes at once, and thus should remain threadsafe.
func (l *LocalCluster) createRoach(
ctx context.Context, node *testNode, vols *Container, env []string, cmd ...string,
) {
l.panicOnStop()
hostConfig := container.HostConfig{
PublishAllPorts: true,
NetworkMode: container.NetworkMode(l.networkID),
Privileged: l.privileged,
}
if vols != nil {
hostConfig.VolumesFrom = append(hostConfig.VolumesFrom, vols.id)
}
var hostname string
if node.index >= 0 {
hostname = fmt.Sprintf("roach-%s-%d", l.clusterID, node.index)
}
log.Infof(ctx, "creating docker container with name: %s", hostname)
var entrypoint []string
if *cockroachImage == builderImageFull {
entrypoint = append(entrypoint, CockroachBinaryInContainer)
} else if *cockroachEntry != "" {
entrypoint = append(entrypoint, *cockroachEntry)
}
var err error
node.Container, err = createContainer(
ctx,
l,
container.Config{
Hostname: hostname,
Image: *cockroachImage,
ExposedPorts: map[nat.Port]struct{}{
DefaultTCP: {},
defaultHTTP: {},
},
Entrypoint: entrypoint,
Env: env,
Cmd: cmd,
Labels: map[string]string{
// Allow for `docker ps --filter label=Hostname=roach-<id>-0` or `--filter label=Roach`.
"Hostname": hostname,
"Roach": "",
"Acceptance-cluster-id": l.clusterID,
},
},
hostConfig,
node.nodeStr,
)
maybePanic(err)
}
func addNetNs(config *containertypes.HostConfig, service project.Service, containers []project.Container, networkMode string) (*containertypes.HostConfig, error) {
if len(containers) == 0 {
return nil, fmt.Errorf("Failed to find container for networks ns %v", networkMode)
}
id, err := containers[0].ID()
if err != nil {
return nil, err
}
config.NetworkMode = containertypes.NetworkMode("container:" + id)
return config, nil
}
func (b *Builder) create() (string, error) {
if b.image == "" && !b.noBaseImage {
return "", fmt.Errorf("Please provide a source image with `from` prior to run")
}
b.runConfig.Image = b.image
resources := container.Resources{
CgroupParent: b.options.CgroupParent,
CPUShares: b.options.CPUShares,
CPUPeriod: b.options.CPUPeriod,
CPUQuota: b.options.CPUQuota,
CpusetCpus: b.options.CPUSetCPUs,
CpusetMems: b.options.CPUSetMems,
Memory: b.options.Memory,
MemorySwap: b.options.MemorySwap,
Ulimits: b.options.Ulimits,
}
// TODO: why not embed a hostconfig in builder?
hostConfig := &container.HostConfig{
SecurityOpt: b.options.SecurityOpt,
Isolation: b.options.Isolation,
ShmSize: b.options.ShmSize,
Resources: resources,
NetworkMode: container.NetworkMode(b.options.NetworkMode),
}
config := *b.runConfig
// Create the container
c, err := b.docker.ContainerCreate(types.ContainerCreateConfig{
Config: b.runConfig,
HostConfig: hostConfig,
})
if err != nil {
return "", err
}
for _, warning := range c.Warnings {
fmt.Fprintf(b.Stdout, " ---> [Warning] %s\n", warning)
}
b.tmpContainers[c.ID] = struct{}{}
fmt.Fprintf(b.Stdout, " ---> Running in %s\n", stringid.TruncateID(c.ID))
// override the entry point that may have been picked up from the base image
if err := b.docker.ContainerUpdateCmdOnBuild(c.ID, config.Cmd); err != nil {
return "", err
}
return c.ID, nil
}
// DisconnectFromNetwork disconnects container from network n.
func (daemon *Daemon) DisconnectFromNetwork(container *container.Container, n libnetwork.Network) error {
if !container.Running {
return derr.ErrorCodeNotRunning.WithArgs(container.ID)
}
if container.HostConfig.NetworkMode.IsHost() && containertypes.NetworkMode(n.Type()).IsHost() {
return runconfig.ErrConflictHostNetwork
}
if err := disconnectFromNetwork(container, n); err != nil {
return err
}
if err := container.ToDiskLocking(); err != nil {
return fmt.Errorf("Error saving container to disk: %v", err)
}
return nil
}
// createContainer creates a new container using the specified
// options. Per the docker API, the created container is not running
// and must be started explicitly. Note that the passed-in hostConfig
// will be augmented with the necessary settings to use the network
// defined by l.createNetwork().
func createContainer(
l *LocalCluster,
containerConfig container.Config,
hostConfig container.HostConfig,
containerName string,
) (*Container, error) {
hostConfig.NetworkMode = container.NetworkMode(l.networkID)
// Disable DNS search under the host machine's domain. This can
// catch upstream wildcard DNS matching and result in odd behavior.
hostConfig.DNSSearch = []string{"."}
resp, err := l.client.ContainerCreate(context.Background(), &containerConfig, &hostConfig, nil, containerName)
if err != nil {
return nil, err
}
return &Container{
id: resp.ID,
name: containerName,
cluster: l,
}, nil
}
// DisconnectFromNetwork disconnects container from network n.
func (daemon *Daemon) DisconnectFromNetwork(container *container.Container, networkName string, force bool) error {
n, err := daemon.FindNetwork(networkName)
if !container.Running || (err != nil && force) {
if container.RemovalInProgress || container.Dead {
return errRemovalContainer(container.ID)
}
// In case networkName is resolved we will use n.Name()
// this will cover the case where network id is passed.
if n != nil {
networkName = n.Name()
}
if _, ok := container.NetworkSettings.Networks[networkName]; !ok {
return fmt.Errorf("container %s is not connected to the network %s", container.ID, networkName)
}
delete(container.NetworkSettings.Networks, networkName)
} else if err == nil && !daemon.isNetworkHotPluggable() {
return fmt.Errorf(runtime.GOOS + " does not support connecting a running container to a network")
} else if err == nil {
if container.HostConfig.NetworkMode.IsHost() && containertypes.NetworkMode(n.Type()).IsHost() {
return runconfig.ErrConflictHostNetwork
}
if err := daemon.disconnectFromNetwork(container, n, false); err != nil {
return err
}
} else {
return err
}
if err := container.ToDiskLocking(); err != nil {
return fmt.Errorf("Error saving container to disk: %v", err)
}
if n != nil {
attributes := map[string]string{
"container": container.ID,
}
daemon.LogNetworkEventWithAttributes(n, "disconnect", attributes)
}
return nil
}
func UtilCreateNetworkMode(c *check.C, networkMode string) {
config := map[string]interface{}{
"Image": "busybox",
"HostConfig": map[string]interface{}{"NetworkMode": networkMode},
}
status, body, err := sockRequest("POST", "/containers/create", config)
c.Assert(err, checker.IsNil)
c.Assert(status, checker.Equals, http.StatusCreated)
var container types.ContainerCreateResponse
c.Assert(json.Unmarshal(body, &container), checker.IsNil)
status, body, err = sockRequest("GET", "/containers/"+container.ID+"/json", nil)
c.Assert(err, checker.IsNil)
c.Assert(status, checker.Equals, http.StatusOK)
var containerJSON types.ContainerJSON
c.Assert(json.Unmarshal(body, &containerJSON), checker.IsNil)
c.Assert(containerJSON.HostConfig.NetworkMode, checker.Equals, containertypes.NetworkMode(networkMode), check.Commentf("Mismatched NetworkMode"))
}
// DisconnectFromNetwork disconnects container from network n.
func (daemon *Daemon) DisconnectFromNetwork(container *container.Container, n libnetwork.Network) error {
if !container.Running {
return derr.ErrorCodeNotRunning.WithArgs(container.ID)
}
if container.HostConfig.NetworkMode.IsHost() && containertypes.NetworkMode(n.Type()).IsHost() {
return runconfig.ErrConflictHostNetwork
}
if err := disconnectFromNetwork(container, n); err != nil {
return err
}
if err := container.ToDiskLocking(); err != nil {
return fmt.Errorf("Error saving container to disk: %v", err)
}
attributes := map[string]string{
"container": container.ID,
}
daemon.LogNetworkEventWithAttributes(n, "disconnect", attributes)
return nil
}
// BuildCreateEndpointOptions builds endpoint options from a given network.
func (container *Container) BuildCreateEndpointOptions(n libnetwork.Network, epConfig *networktypes.EndpointSettings, sb libnetwork.Sandbox, daemonDNS []string) ([]libnetwork.EndpointOption, error) {
var (
bindings = make(nat.PortMap)
pbList []types.PortBinding
exposeList []types.TransportPort
createOptions []libnetwork.EndpointOption
)
defaultNetName := runconfig.DefaultDaemonNetworkMode().NetworkName()
if (!container.EnableServiceDiscoveryOnDefaultNetwork() && n.Name() == defaultNetName) ||
container.NetworkSettings.IsAnonymousEndpoint {
createOptions = append(createOptions, libnetwork.CreateOptionAnonymous())
}
if epConfig != nil {
ipam := epConfig.IPAMConfig
if ipam != nil && (ipam.IPv4Address != "" || ipam.IPv6Address != "" || len(ipam.LinkLocalIPs) > 0) {
var ipList []net.IP
for _, ips := range ipam.LinkLocalIPs {
if ip := net.ParseIP(ips); ip != nil {
ipList = append(ipList, ip)
}
}
createOptions = append(createOptions,
libnetwork.CreateOptionIpam(net.ParseIP(ipam.IPv4Address), net.ParseIP(ipam.IPv6Address), ipList, nil))
}
for _, alias := range epConfig.Aliases {
createOptions = append(createOptions, libnetwork.CreateOptionMyAlias(alias))
}
}
if container.NetworkSettings.Service != nil {
svcCfg := container.NetworkSettings.Service
var vip string
if svcCfg.VirtualAddresses[n.ID()] != nil {
vip = svcCfg.VirtualAddresses[n.ID()].IPv4
}
var portConfigs []*libnetwork.PortConfig
for _, portConfig := range svcCfg.ExposedPorts {
portConfigs = append(portConfigs, &libnetwork.PortConfig{
Name: portConfig.Name,
Protocol: libnetwork.PortConfig_Protocol(portConfig.Protocol),
TargetPort: portConfig.TargetPort,
PublishedPort: portConfig.PublishedPort,
})
}
createOptions = append(createOptions, libnetwork.CreateOptionService(svcCfg.Name, svcCfg.ID, net.ParseIP(vip), portConfigs, svcCfg.Aliases[n.ID()]))
}
if !containertypes.NetworkMode(n.Name()).IsUserDefined() {
createOptions = append(createOptions, libnetwork.CreateOptionDisableResolution())
}
// configs that are applicable only for the endpoint in the network
// to which container was connected to on docker run.
// Ideally all these network-specific endpoint configurations must be moved under
// container.NetworkSettings.Networks[n.Name()]
if n.Name() == container.HostConfig.NetworkMode.NetworkName() ||
(n.Name() == defaultNetName && container.HostConfig.NetworkMode.IsDefault()) {
if container.Config.MacAddress != "" {
mac, err := net.ParseMAC(container.Config.MacAddress)
if err != nil {
return nil, err
}
genericOption := options.Generic{
netlabel.MacAddress: mac,
}
createOptions = append(createOptions, libnetwork.EndpointOptionGeneric(genericOption))
}
}
// Port-mapping rules belong to the container & applicable only to non-internal networks
portmaps := GetSandboxPortMapInfo(sb)
if n.Info().Internal() || len(portmaps) > 0 {
return createOptions, nil
}
if container.HostConfig.PortBindings != nil {
for p, b := range container.HostConfig.PortBindings {
bindings[p] = []nat.PortBinding{}
for _, bb := range b {
bindings[p] = append(bindings[p], nat.PortBinding{
HostIP: bb.HostIP,
HostPort: bb.HostPort,
})
}
}
}
portSpecs := container.Config.ExposedPorts
ports := make([]nat.Port, len(portSpecs))
var i int
for p := range portSpecs {
ports[i] = p
i++
}
nat.SortPortMap(ports, bindings)
for _, port := range ports {
expose := types.TransportPort{}
expose.Proto = types.ParseProtocol(port.Proto())
expose.Port = uint16(port.Int())
exposeList = append(exposeList, expose)
pb := types.PortBinding{Port: expose.Port, Proto: expose.Proto}
binding := bindings[port]
for i := 0; i < len(binding); i++ {
pbCopy := pb.GetCopy()
newP, err := nat.NewPort(nat.SplitProtoPort(binding[i].HostPort))
var portStart, portEnd int
if err == nil {
portStart, portEnd, err = newP.Range()
}
if err != nil {
return nil, fmt.Errorf("Error parsing HostPort value(%s):%v", binding[i].HostPort, err)
}
pbCopy.HostPort = uint16(portStart)
pbCopy.HostPortEnd = uint16(portEnd)
pbCopy.HostIP = net.ParseIP(binding[i].HostIP)
pbList = append(pbList, pbCopy)
}
if container.HostConfig.PublishAllPorts && len(binding) == 0 {
pbList = append(pbList, pb)
}
}
var dns []string
if len(container.HostConfig.DNS) > 0 {
dns = container.HostConfig.DNS
} else if len(daemonDNS) > 0 {
dns = daemonDNS
}
if len(dns) > 0 {
createOptions = append(createOptions,
libnetwork.CreateOptionDNS(dns))
}
createOptions = append(createOptions,
libnetwork.CreateOptionPortMapping(pbList),
libnetwork.CreateOptionExposedPorts(exposeList))
return createOptions, nil
}
// Convert converts a service configuration to an docker API structures (Config and HostConfig)
func Convert(c *config.ServiceConfig, ctx project.Context, clientFactory composeclient.Factory) (*container.Config, *container.HostConfig, error) {
restartPolicy, err := restartPolicy(c)
if err != nil {
return nil, nil, err
}
exposedPorts, portBindings, err := ports(c)
if err != nil {
return nil, nil, err
}
deviceMappings, err := parseDevices(c.Devices)
if err != nil {
return nil, nil, err
}
var volumesFrom []string
if c.VolumesFrom != nil {
volumesFrom, err = getVolumesFrom(c.VolumesFrom, ctx.Project.ServiceConfigs, ctx.ProjectName)
if err != nil {
return nil, nil, err
}
}
vols := volumes(c, ctx)
config := &container.Config{
Entrypoint: strslice.StrSlice(utils.CopySlice(c.Entrypoint)),
Hostname: c.Hostname,
Domainname: c.DomainName,
User: c.User,
Env: utils.CopySlice(c.Environment),
Cmd: strslice.StrSlice(utils.CopySlice(c.Command)),
Image: c.Image,
Labels: utils.CopyMap(c.Labels),
ExposedPorts: exposedPorts,
Tty: c.Tty,
OpenStdin: c.StdinOpen,
WorkingDir: c.WorkingDir,
Volumes: toMap(Filter(vols, isVolume)),
MacAddress: c.MacAddress,
StopSignal: c.StopSignal,
}
ulimits := []*units.Ulimit{}
if c.Ulimits.Elements != nil {
for _, ulimit := range c.Ulimits.Elements {
ulimits = append(ulimits, &units.Ulimit{
Name: ulimit.Name,
Soft: ulimit.Soft,
Hard: ulimit.Hard,
})
}
}
memorySwappiness := int64(c.MemSwappiness)
resources := container.Resources{
CgroupParent: c.CgroupParent,
Memory: int64(c.MemLimit),
MemorySwap: int64(c.MemSwapLimit),
MemorySwappiness: &memorySwappiness,
CPUShares: int64(c.CPUShares),
CPUQuota: int64(c.CPUQuota),
CpusetCpus: c.CPUSet,
Ulimits: ulimits,
Devices: deviceMappings,
}
networkMode := c.NetworkMode
if c.NetworkMode == "" {
if c.Networks != nil && len(c.Networks.Networks) > 0 {
networkMode = c.Networks.Networks[0].RealName
}
} else {
switch {
case strings.HasPrefix(c.NetworkMode, "service:"):
serviceName := c.NetworkMode[8:]
if serviceConfig, ok := ctx.Project.ServiceConfigs.Get(serviceName); ok {
// FIXME(vdemeester) this is actually not right, should be fixed but not there
service, err := ctx.ServiceFactory.Create(ctx.Project, serviceName, serviceConfig)
if err != nil {
return nil, nil, err
}
containers, err := service.Containers(context.Background())
if err != nil {
return nil, nil, err
}
if len(containers) != 0 {
container := containers[0]
containerID, err := container.ID()
if err != nil {
return nil, nil, err
}
networkMode = "container:" + containerID
}
// FIXME(vdemeester) log/warn in case of len(containers) == 0
}
case strings.HasPrefix(c.NetworkMode, "container:"):
containerName := c.NetworkMode[10:]
client := clientFactory.Create(nil)
container, err := composecontainer.Get(context.Background(), client, containerName)
if err != nil {
return nil, nil, err
}
networkMode = "container:" + container.ID
default:
// do nothing :)
}
}
tmpfs := map[string]string{}
for _, path := range c.Tmpfs {
split := strings.SplitN(path, ":", 2)
if len(split) == 1 {
tmpfs[split[0]] = ""
} else if len(split) == 2 {
tmpfs[split[0]] = split[1]
}
}
hostConfig := &container.HostConfig{
VolumesFrom: volumesFrom,
CapAdd: strslice.StrSlice(utils.CopySlice(c.CapAdd)),
CapDrop: strslice.StrSlice(utils.CopySlice(c.CapDrop)),
GroupAdd: c.GroupAdd,
ExtraHosts: utils.CopySlice(c.ExtraHosts),
Privileged: c.Privileged,
Binds: Filter(vols, isBind),
DNS: utils.CopySlice(c.DNS),
DNSOptions: utils.CopySlice(c.DNSOpts),
DNSSearch: utils.CopySlice(c.DNSSearch),
Isolation: container.Isolation(c.Isolation),
LogConfig: container.LogConfig{
Type: c.Logging.Driver,
Config: utils.CopyMap(c.Logging.Options),
},
NetworkMode: container.NetworkMode(networkMode),
ReadonlyRootfs: c.ReadOnly,
OomScoreAdj: int(c.OomScoreAdj),
PidMode: container.PidMode(c.Pid),
UTSMode: container.UTSMode(c.Uts),
IpcMode: container.IpcMode(c.Ipc),
PortBindings: portBindings,
RestartPolicy: *restartPolicy,
ShmSize: int64(c.ShmSize),
SecurityOpt: utils.CopySlice(c.SecurityOpt),
Tmpfs: tmpfs,
VolumeDriver: c.VolumeDriver,
Resources: resources,
}
if config.Labels == nil {
config.Labels = map[string]string{}
}
return config, hostConfig, nil
}
// DefaultDaemonNetworkMode returns the default network stack the daemon should
// use.
func DefaultDaemonNetworkMode() container.NetworkMode {
return container.NetworkMode("bridge")
}
// IsPreDefinedNetwork indicates if a network is predefined by the daemon
func IsPreDefinedNetwork(network string) bool {
n := container.NetworkMode(network)
return n.IsBridge() || n.IsHost() || n.IsNone() || n.IsDefault() || network == "ingress"
}
func (daemon *Daemon) connectToNetwork(container *container.Container, idOrName string, updateSettings bool) (err error) {
if container.HostConfig.NetworkMode.IsContainer() {
return runconfig.ErrConflictSharedNetwork
}
if containertypes.NetworkMode(idOrName).IsBridge() &&
daemon.configStore.DisableBridge {
container.Config.NetworkDisabled = true
return nil
}
controller := daemon.netController
n, err := daemon.FindNetwork(idOrName)
if err != nil {
return err
}
if updateSettings {
if err := daemon.updateNetworkSettings(container, n); err != nil {
return err
}
}
ep, err := container.GetEndpointInNetwork(n)
if err == nil {
return fmt.Errorf("Conflict. A container with name %q is already connected to network %s.", strings.TrimPrefix(container.Name, "/"), idOrName)
}
if _, ok := err.(libnetwork.ErrNoSuchEndpoint); !ok {
return err
}
createOptions, err := container.BuildCreateEndpointOptions(n)
if err != nil {
return err
}
endpointName := strings.TrimPrefix(container.Name, "/")
ep, err = n.CreateEndpoint(endpointName, createOptions...)
if err != nil {
return err
}
defer func() {
if err != nil {
if e := ep.Delete(); e != nil {
logrus.Warnf("Could not rollback container connection to network %s", idOrName)
}
}
}()
if err := daemon.updateEndpointNetworkSettings(container, n, ep); err != nil {
return err
}
sb := daemon.getNetworkSandbox(container)
if sb == nil {
options, err := daemon.buildSandboxOptions(container, n)
if err != nil {
return err
}
sb, err = controller.NewSandbox(container.ID, options...)
if err != nil {
return err
}
container.UpdateSandboxNetworkSettings(sb)
}
if err := ep.Join(sb); err != nil {
return err
}
if err := container.UpdateJoinInfo(n, ep); err != nil {
return derr.ErrorCodeJoinInfo.WithArgs(err)
}
return nil
}
func (daemon *Daemon) connectToNetwork(container *container.Container, idOrName string, endpointConfig *networktypes.EndpointSettings, updateSettings bool) (err error) {
start := time.Now()
if container.HostConfig.NetworkMode.IsContainer() {
return runconfig.ErrConflictSharedNetwork
}
if containertypes.NetworkMode(idOrName).IsBridge() &&
daemon.configStore.DisableBridge {
container.Config.NetworkDisabled = true
return nil
}
if endpointConfig == nil {
endpointConfig = &networktypes.EndpointSettings{}
}
n, config, err := daemon.findAndAttachNetwork(container, idOrName, endpointConfig)
if err != nil {
return err
}
if n == nil {
return nil
}
var operIPAM bool
if config != nil {
if epConfig, ok := config.EndpointsConfig[n.Name()]; ok {
if endpointConfig.IPAMConfig == nil ||
(endpointConfig.IPAMConfig.IPv4Address == "" &&
endpointConfig.IPAMConfig.IPv6Address == "" &&
len(endpointConfig.IPAMConfig.LinkLocalIPs) == 0) {
operIPAM = true
}
// copy IPAMConfig and NetworkID from epConfig via AttachNetwork
endpointConfig.IPAMConfig = epConfig.IPAMConfig
endpointConfig.NetworkID = epConfig.NetworkID
}
}
err = daemon.updateNetworkConfig(container, n, endpointConfig, updateSettings)
if err != nil {
return err
}
controller := daemon.netController
sb := daemon.getNetworkSandbox(container)
createOptions, err := container.BuildCreateEndpointOptions(n, endpointConfig, sb, daemon.configStore.DNS)
if err != nil {
return err
}
endpointName := strings.TrimPrefix(container.Name, "/")
ep, err := n.CreateEndpoint(endpointName, createOptions...)
if err != nil {
return err
}
defer func() {
if err != nil {
if e := ep.Delete(false); e != nil {
logrus.Warnf("Could not rollback container connection to network %s", idOrName)
}
}
}()
container.NetworkSettings.Networks[n.Name()] = &network.EndpointSettings{
EndpointSettings: endpointConfig,
IPAMOperational: operIPAM,
}
if _, ok := container.NetworkSettings.Networks[n.ID()]; ok {
delete(container.NetworkSettings.Networks, n.ID())
}
if err := daemon.updateEndpointNetworkSettings(container, n, ep); err != nil {
return err
}
if sb == nil {
options, err := daemon.buildSandboxOptions(container)
if err != nil {
return err
}
sb, err = controller.NewSandbox(container.ID, options...)
if err != nil {
return err
}
container.UpdateSandboxNetworkSettings(sb)
}
joinOptions, err := container.BuildJoinOptions(n)
if err != nil {
return err
}
if err := ep.Join(sb, joinOptions...); err != nil {
return err
}
if err := container.UpdateJoinInfo(n, ep); err != nil {
return fmt.Errorf("Updating join info failed: %v", err)
}
container.NetworkSettings.Ports = getPortMapInfo(sb)
daemon.LogNetworkEventWithAttributes(n, "connect", map[string]string{"container": container.ID})
networkActions.WithValues("connect").UpdateSince(start)
return nil
}
// DefaultDaemonNetworkMode returns the default network stack the daemon should
// use.
func DefaultDaemonNetworkMode() container.NetworkMode {
return container.NetworkMode("nat")
}
func (daemon *Daemon) initNetworkController(config *Config, activeSandboxes map[string]interface{}) (libnetwork.NetworkController, error) {
netOptions, err := daemon.networkOptions(config, nil)
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
}
defaultNetworkExists := false
if network, err := controller.NetworkByName(runconfig.DefaultDaemonNetworkMode().NetworkName()); err == nil {
options := network.Info().DriverOptions()
for _, v := range hnsresponse {
if options[winlibnetwork.HNSID] == v.Id {
defaultNetworkExists = true
break
}
}
}
// 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()
// This will not cause network delete from HNS as the network
// is not yet populated in the libnetwork windows driver
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
// If there is no nat network create one from the first NAT network
// encountered
if !defaultNetworkExists && runconfig.DefaultDaemonNetworkMode() == containertypes.NetworkMode(strings.ToLower(v.Type)) {
name = runconfig.DefaultDaemonNetworkMode().NetworkName()
defaultNetworkExists = true
}
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
}
// Parse parses the args for the specified command and generates a Config,
// a HostConfig and returns them with the specified command.
// If the specified args are not valid, it will return an error.
func Parse(flags *pflag.FlagSet, copts *ContainerOptions) (*container.Config, *container.HostConfig, *networktypes.NetworkingConfig, error) {
var (
attachStdin = copts.attach.Get("stdin")
attachStdout = copts.attach.Get("stdout")
attachStderr = copts.attach.Get("stderr")
)
// Validate the input mac address
if copts.macAddress != "" {
if _, err := ValidateMACAddress(copts.macAddress); err != nil {
return nil, nil, nil, fmt.Errorf("%s is not a valid mac address", copts.macAddress)
}
}
if copts.stdin {
attachStdin = true
}
// If -a is not set, attach to stdout and stderr
if copts.attach.Len() == 0 {
attachStdout = true
attachStderr = true
}
var err error
var memory int64
if copts.memoryString != "" {
memory, err = units.RAMInBytes(copts.memoryString)
if err != nil {
return nil, nil, nil, err
}
}
var memoryReservation int64
if copts.memoryReservation != "" {
memoryReservation, err = units.RAMInBytes(copts.memoryReservation)
if err != nil {
return nil, nil, nil, err
}
}
var memorySwap int64
if copts.memorySwap != "" {
if copts.memorySwap == "-1" {
memorySwap = -1
} else {
memorySwap, err = units.RAMInBytes(copts.memorySwap)
if err != nil {
return nil, nil, nil, err
}
}
}
var kernelMemory int64
if copts.kernelMemory != "" {
kernelMemory, err = units.RAMInBytes(copts.kernelMemory)
if err != nil {
return nil, nil, nil, err
}
}
swappiness := copts.swappiness
if swappiness != -1 && (swappiness < 0 || swappiness > 100) {
return nil, nil, nil, fmt.Errorf("invalid value: %d. Valid memory swappiness range is 0-100", swappiness)
}
var shmSize int64
if copts.shmSize != "" {
shmSize, err = units.RAMInBytes(copts.shmSize)
if err != nil {
return nil, nil, nil, err
}
}
// TODO FIXME units.RAMInBytes should have a uint64 version
var maxIOBandwidth int64
if copts.ioMaxBandwidth != "" {
maxIOBandwidth, err = units.RAMInBytes(copts.ioMaxBandwidth)
if err != nil {
return nil, nil, nil, err
}
if maxIOBandwidth < 0 {
return nil, nil, nil, fmt.Errorf("invalid value: %s. Maximum IO Bandwidth must be positive", copts.ioMaxBandwidth)
}
}
var binds []string
// add any bind targets to the list of container volumes
for bind := range copts.volumes.GetMap() {
if arr := volumeSplitN(bind, 2); len(arr) > 1 {
// after creating the bind mount we want to delete it from the copts.volumes values because
// we do not want bind mounts being committed to image configs
binds = append(binds, bind)
copts.volumes.Delete(bind)
}
}
// Can't evaluate options passed into --tmpfs until we actually mount
tmpfs := make(map[string]string)
for _, t := range copts.tmpfs.GetAll() {
if arr := strings.SplitN(t, ":", 2); len(arr) > 1 {
if _, _, err := mount.ParseTmpfsOptions(arr[1]); err != nil {
return nil, nil, nil, err
}
tmpfs[arr[0]] = arr[1]
} else {
tmpfs[arr[0]] = ""
}
}
var (
runCmd strslice.StrSlice
entrypoint strslice.StrSlice
)
if len(copts.Args) > 0 {
runCmd = strslice.StrSlice(copts.Args)
}
if copts.entrypoint != "" {
entrypoint = strslice.StrSlice{copts.entrypoint}
} else if flags.Changed("entrypoint") {
// if `--entrypoint=` is parsed then Entrypoint is reset
entrypoint = []string{""}
}
ports, portBindings, err := nat.ParsePortSpecs(copts.publish.GetAll())
if err != nil {
return nil, nil, nil, err
}
// Merge in exposed ports to the map of published ports
for _, e := range copts.expose.GetAll() {
if strings.Contains(e, ":") {
return nil, nil, nil, fmt.Errorf("invalid port format for --expose: %s", e)
}
//support two formats for expose, original format <portnum>/[<proto>] or <startport-endport>/[<proto>]
proto, port := nat.SplitProtoPort(e)
//parse the start and end port and create a sequence of ports to expose
//if expose a port, the start and end port are the same
start, end, err := nat.ParsePortRange(port)
if err != nil {
return nil, nil, nil, fmt.Errorf("invalid range format for --expose: %s, error: %s", e, err)
}
for i := start; i <= end; i++ {
p, err := nat.NewPort(proto, strconv.FormatUint(i, 10))
if err != nil {
return nil, nil, nil, err
}
if _, exists := ports[p]; !exists {
ports[p] = struct{}{}
}
}
}
// parse device mappings
deviceMappings := []container.DeviceMapping{}
for _, device := range copts.devices.GetAll() {
deviceMapping, err := ParseDevice(device)
if err != nil {
return nil, nil, nil, err
}
deviceMappings = append(deviceMappings, deviceMapping)
}
// collect all the environment variables for the container
envVariables, err := readKVStrings(copts.envFile.GetAll(), copts.env.GetAll())
if err != nil {
return nil, nil, nil, err
}
// collect all the labels for the container
labels, err := readKVStrings(copts.labelsFile.GetAll(), copts.labels.GetAll())
if err != nil {
return nil, nil, nil, err
}
ipcMode := container.IpcMode(copts.ipcMode)
if !ipcMode.Valid() {
return nil, nil, nil, fmt.Errorf("--ipc: invalid IPC mode")
}
pidMode := container.PidMode(copts.pidMode)
if !pidMode.Valid() {
return nil, nil, nil, fmt.Errorf("--pid: invalid PID mode")
}
utsMode := container.UTSMode(copts.utsMode)
if !utsMode.Valid() {
return nil, nil, nil, fmt.Errorf("--uts: invalid UTS mode")
}
usernsMode := container.UsernsMode(copts.usernsMode)
if !usernsMode.Valid() {
return nil, nil, nil, fmt.Errorf("--userns: invalid USER mode")
}
restartPolicy, err := ParseRestartPolicy(copts.restartPolicy)
if err != nil {
return nil, nil, nil, err
}
loggingOpts, err := parseLoggingOpts(copts.loggingDriver, copts.loggingOpts.GetAll())
if err != nil {
return nil, nil, nil, err
}
securityOpts, err := parseSecurityOpts(copts.securityOpt.GetAll())
if err != nil {
return nil, nil, nil, err
}
storageOpts, err := parseStorageOpts(copts.storageOpt.GetAll())
if err != nil {
return nil, nil, nil, err
}
// Healthcheck
var healthConfig *container.HealthConfig
haveHealthSettings := copts.healthCmd != "" ||
copts.healthInterval != 0 ||
copts.healthTimeout != 0 ||
copts.healthRetries != 0
if copts.noHealthcheck {
if haveHealthSettings {
return nil, nil, nil, fmt.Errorf("--no-healthcheck conflicts with --health-* options")
}
test := strslice.StrSlice{"NONE"}
healthConfig = &container.HealthConfig{Test: test}
} else if haveHealthSettings {
var probe strslice.StrSlice
if copts.healthCmd != "" {
args := []string{"CMD-SHELL", copts.healthCmd}
probe = strslice.StrSlice(args)
}
if copts.healthInterval < 0 {
return nil, nil, nil, fmt.Errorf("--health-interval cannot be negative")
}
if copts.healthTimeout < 0 {
return nil, nil, nil, fmt.Errorf("--health-timeout cannot be negative")
}
healthConfig = &container.HealthConfig{
Test: probe,
Interval: copts.healthInterval,
Timeout: copts.healthTimeout,
Retries: copts.healthRetries,
}
}
resources := container.Resources{
CgroupParent: copts.cgroupParent,
Memory: memory,
MemoryReservation: memoryReservation,
MemorySwap: memorySwap,
MemorySwappiness: &copts.swappiness,
KernelMemory: kernelMemory,
OomKillDisable: &copts.oomKillDisable,
CPUPercent: copts.cpuPercent,
CPUShares: copts.cpuShares,
CPUPeriod: copts.cpuPeriod,
CpusetCpus: copts.cpusetCpus,
CpusetMems: copts.cpusetMems,
CPUQuota: copts.cpuQuota,
PidsLimit: copts.pidsLimit,
BlkioWeight: copts.blkioWeight,
BlkioWeightDevice: copts.blkioWeightDevice.GetList(),
BlkioDeviceReadBps: copts.deviceReadBps.GetList(),
BlkioDeviceWriteBps: copts.deviceWriteBps.GetList(),
BlkioDeviceReadIOps: copts.deviceReadIOps.GetList(),
BlkioDeviceWriteIOps: copts.deviceWriteIOps.GetList(),
IOMaximumIOps: copts.ioMaxIOps,
IOMaximumBandwidth: uint64(maxIOBandwidth),
Ulimits: copts.ulimits.GetList(),
Devices: deviceMappings,
}
config := &container.Config{
Hostname: copts.hostname,
ExposedPorts: ports,
User: copts.user,
Tty: copts.tty,
// TODO: deprecated, it comes from -n, --networking
// it's still needed internally to set the network to disabled
// if e.g. bridge is none in daemon opts, and in inspect
NetworkDisabled: false,
OpenStdin: copts.stdin,
AttachStdin: attachStdin,
AttachStdout: attachStdout,
AttachStderr: attachStderr,
Env: envVariables,
Cmd: runCmd,
Image: copts.Image,
Volumes: copts.volumes.GetMap(),
MacAddress: copts.macAddress,
Entrypoint: entrypoint,
WorkingDir: copts.workingDir,
Labels: ConvertKVStringsToMap(labels),
Healthcheck: healthConfig,
}
if flags.Changed("stop-signal") {
config.StopSignal = copts.stopSignal
}
hostConfig := &container.HostConfig{
Binds: binds,
ContainerIDFile: copts.containerIDFile,
OomScoreAdj: copts.oomScoreAdj,
AutoRemove: copts.autoRemove,
Privileged: copts.privileged,
PortBindings: portBindings,
Links: copts.links.GetAll(),
PublishAllPorts: copts.publishAll,
// Make sure the dns fields are never nil.
// New containers don't ever have those fields nil,
// but pre created containers can still have those nil values.
// See https://github.com/docker/docker/pull/17779
// for a more detailed explanation on why we don't want that.
DNS: copts.dns.GetAllOrEmpty(),
DNSSearch: copts.dnsSearch.GetAllOrEmpty(),
DNSOptions: copts.dnsOptions.GetAllOrEmpty(),
ExtraHosts: copts.extraHosts.GetAll(),
VolumesFrom: copts.volumesFrom.GetAll(),
NetworkMode: container.NetworkMode(copts.netMode),
IpcMode: ipcMode,
PidMode: pidMode,
UTSMode: utsMode,
UsernsMode: usernsMode,
CapAdd: strslice.StrSlice(copts.capAdd.GetAll()),
CapDrop: strslice.StrSlice(copts.capDrop.GetAll()),
GroupAdd: copts.groupAdd.GetAll(),
RestartPolicy: restartPolicy,
SecurityOpt: securityOpts,
StorageOpt: storageOpts,
ReadonlyRootfs: copts.readonlyRootfs,
LogConfig: container.LogConfig{Type: copts.loggingDriver, Config: loggingOpts},
VolumeDriver: copts.volumeDriver,
Isolation: container.Isolation(copts.isolation),
ShmSize: shmSize,
Resources: resources,
Tmpfs: tmpfs,
Sysctls: copts.sysctls.GetAll(),
Runtime: copts.runtime,
}
// only set this value if the user provided the flag, else it should default to nil
if flags.Changed("init") {
hostConfig.Init = &copts.init
}
// When allocating stdin in attached mode, close stdin at client disconnect
if config.OpenStdin && config.AttachStdin {
config.StdinOnce = true
}
networkingConfig := &networktypes.NetworkingConfig{
EndpointsConfig: make(map[string]*networktypes.EndpointSettings),
}
if copts.ipv4Address != "" || copts.ipv6Address != "" || copts.linkLocalIPs.Len() > 0 {
epConfig := &networktypes.EndpointSettings{}
networkingConfig.EndpointsConfig[string(hostConfig.NetworkMode)] = epConfig
epConfig.IPAMConfig = &networktypes.EndpointIPAMConfig{
IPv4Address: copts.ipv4Address,
IPv6Address: copts.ipv6Address,
}
if copts.linkLocalIPs.Len() > 0 {
epConfig.IPAMConfig.LinkLocalIPs = make([]string, copts.linkLocalIPs.Len())
copy(epConfig.IPAMConfig.LinkLocalIPs, copts.linkLocalIPs.GetAll())
}
}
if hostConfig.NetworkMode.IsUserDefined() && len(hostConfig.Links) > 0 {
epConfig := networkingConfig.EndpointsConfig[string(hostConfig.NetworkMode)]
if epConfig == nil {
epConfig = &networktypes.EndpointSettings{}
}
epConfig.Links = make([]string, len(hostConfig.Links))
copy(epConfig.Links, hostConfig.Links)
networkingConfig.EndpointsConfig[string(hostConfig.NetworkMode)] = epConfig
}
if copts.aliases.Len() > 0 {
epConfig := networkingConfig.EndpointsConfig[string(hostConfig.NetworkMode)]
if epConfig == nil {
epConfig = &networktypes.EndpointSettings{}
}
epConfig.Aliases = make([]string, copts.aliases.Len())
copy(epConfig.Aliases, copts.aliases.GetAll())
networkingConfig.EndpointsConfig[string(hostConfig.NetworkMode)] = epConfig
}
return config, hostConfig, networkingConfig, nil
}
// Parse parses the specified args for the specified command and generates a Config,
// a HostConfig and returns them with the specified command.
// If the specified args are not valid, it will return an error.
func Parse(cmd *flag.FlagSet, args []string) (*container.Config, *container.HostConfig, *flag.FlagSet, error) {
var (
// FIXME: use utils.ListOpts for attach and volumes?
flAttach = opts.NewListOpts(opts.ValidateAttach)
flVolumes = opts.NewListOpts(nil)
flTmpfs = opts.NewListOpts(nil)
flBlkioWeightDevice = NewWeightdeviceOpt(ValidateWeightDevice)
flDeviceReadBps = NewThrottledeviceOpt(ValidateThrottleBpsDevice)
flDeviceWriteBps = NewThrottledeviceOpt(ValidateThrottleBpsDevice)
flLinks = opts.NewListOpts(ValidateLink)
flDeviceReadIOps = NewThrottledeviceOpt(ValidateThrottleIOpsDevice)
flDeviceWriteIOps = NewThrottledeviceOpt(ValidateThrottleIOpsDevice)
flEnv = opts.NewListOpts(opts.ValidateEnv)
flLabels = opts.NewListOpts(opts.ValidateEnv)
flDevices = opts.NewListOpts(ValidateDevice)
flUlimits = NewUlimitOpt(nil)
flPublish = opts.NewListOpts(nil)
flExpose = opts.NewListOpts(nil)
flDNS = opts.NewListOpts(opts.ValidateIPAddress)
flDNSSearch = opts.NewListOpts(opts.ValidateDNSSearch)
flDNSOptions = opts.NewListOpts(nil)
flExtraHosts = opts.NewListOpts(opts.ValidateExtraHost)
flVolumesFrom = opts.NewListOpts(nil)
flEnvFile = opts.NewListOpts(nil)
flCapAdd = opts.NewListOpts(nil)
flCapDrop = opts.NewListOpts(nil)
flGroupAdd = opts.NewListOpts(nil)
flSecurityOpt = opts.NewListOpts(nil)
flLabelsFile = opts.NewListOpts(nil)
flLoggingOpts = opts.NewListOpts(nil)
flPrivileged = cmd.Bool([]string{"-privileged"}, false, "Give extended privileges to this container")
flPidMode = cmd.String([]string{"-pid"}, "", "PID namespace to use")
flUTSMode = cmd.String([]string{"-uts"}, "", "UTS namespace to use")
flPublishAll = cmd.Bool([]string{"P", "-publish-all"}, false, "Publish all exposed ports to random ports")
flStdin = cmd.Bool([]string{"i", "-interactive"}, false, "Keep STDIN open even if not attached")
flTty = cmd.Bool([]string{"t", "-tty"}, false, "Allocate a pseudo-TTY")
flOomKillDisable = cmd.Bool([]string{"-oom-kill-disable"}, false, "Disable OOM Killer")
flOomScoreAdj = cmd.Int([]string{"-oom-score-adj"}, 0, "Tune host's OOM preferences (-1000 to 1000)")
flContainerIDFile = cmd.String([]string{"-cidfile"}, "", "Write the container ID to the file")
flEntrypoint = cmd.String([]string{"-entrypoint"}, "", "Overwrite the default ENTRYPOINT of the image")
flHostname = cmd.String([]string{"h", "-hostname"}, "", "Container host name")
flMemoryString = cmd.String([]string{"m", "-memory"}, "", "Memory limit")
flMemoryReservation = cmd.String([]string{"-memory-reservation"}, "", "Memory soft limit")
flMemorySwap = cmd.String([]string{"-memory-swap"}, "", "Swap limit equal to memory plus swap: '-1' to enable unlimited swap")
flKernelMemory = cmd.String([]string{"-kernel-memory"}, "", "Kernel memory limit")
flUser = cmd.String([]string{"u", "-user"}, "", "Username or UID (format: <name|uid>[:<group|gid>])")
flWorkingDir = cmd.String([]string{"w", "-workdir"}, "", "Working directory inside the container")
flCPUShares = cmd.Int64([]string{"#c", "-cpu-shares"}, 0, "CPU shares (relative weight)")
flCPUPeriod = cmd.Int64([]string{"-cpu-period"}, 0, "Limit CPU CFS (Completely Fair Scheduler) period")
flCPUQuota = cmd.Int64([]string{"-cpu-quota"}, 0, "Limit CPU CFS (Completely Fair Scheduler) quota")
flCpusetCpus = cmd.String([]string{"-cpuset-cpus"}, "", "CPUs in which to allow execution (0-3, 0,1)")
flCpusetMems = cmd.String([]string{"-cpuset-mems"}, "", "MEMs in which to allow execution (0-3, 0,1)")
flBlkioWeight = cmd.Uint16([]string{"-blkio-weight"}, 0, "Block IO (relative weight), between 10 and 1000")
flSwappiness = cmd.Int64([]string{"-memory-swappiness"}, -1, "Tune container memory swappiness (0 to 100)")
flNetMode = cmd.String([]string{"-net"}, "default", "Connect a container to a network")
flMacAddress = cmd.String([]string{"-mac-address"}, "", "Container MAC address (e.g. 92:d0:c6:0a:29:33)")
flIpcMode = cmd.String([]string{"-ipc"}, "", "IPC namespace to use")
flRestartPolicy = cmd.String([]string{"-restart"}, "no", "Restart policy to apply when a container exits")
flReadonlyRootfs = cmd.Bool([]string{"-read-only"}, false, "Mount the container's root filesystem as read only")
flLoggingDriver = cmd.String([]string{"-log-driver"}, "", "Logging driver for container")
flCgroupParent = cmd.String([]string{"-cgroup-parent"}, "", "Optional parent cgroup for the container")
flVolumeDriver = cmd.String([]string{"-volume-driver"}, "", "Optional volume driver for the container")
flStopSignal = cmd.String([]string{"-stop-signal"}, signal.DefaultStopSignal, fmt.Sprintf("Signal to stop a container, %v by default", signal.DefaultStopSignal))
flIsolation = cmd.String([]string{"-isolation"}, "", "Container isolation level")
flShmSize = cmd.String([]string{"-shm-size"}, "", "Size of /dev/shm, default value is 64MB")
)
cmd.Var(&flAttach, []string{"a", "-attach"}, "Attach to STDIN, STDOUT or STDERR")
cmd.Var(&flBlkioWeightDevice, []string{"-blkio-weight-device"}, "Block IO weight (relative device weight)")
cmd.Var(&flDeviceReadBps, []string{"-device-read-bps"}, "Limit read rate (bytes per second) from a device")
cmd.Var(&flDeviceWriteBps, []string{"-device-write-bps"}, "Limit write rate (bytes per second) to a device")
cmd.Var(&flDeviceReadIOps, []string{"-device-read-iops"}, "Limit read rate (IO per second) from a device")
cmd.Var(&flDeviceWriteIOps, []string{"-device-write-iops"}, "Limit write rate (IO per second) to a device")
cmd.Var(&flVolumes, []string{"v", "-volume"}, "Bind mount a volume")
cmd.Var(&flTmpfs, []string{"-tmpfs"}, "Mount a tmpfs directory")
cmd.Var(&flLinks, []string{"-link"}, "Add link to another container")
cmd.Var(&flDevices, []string{"-device"}, "Add a host device to the container")
cmd.Var(&flLabels, []string{"l", "-label"}, "Set meta data on a container")
cmd.Var(&flLabelsFile, []string{"-label-file"}, "Read in a line delimited file of labels")
cmd.Var(&flEnv, []string{"e", "-env"}, "Set environment variables")
cmd.Var(&flEnvFile, []string{"-env-file"}, "Read in a file of environment variables")
cmd.Var(&flPublish, []string{"p", "-publish"}, "Publish a container's port(s) to the host")
cmd.Var(&flExpose, []string{"-expose"}, "Expose a port or a range of ports")
cmd.Var(&flDNS, []string{"-dns"}, "Set custom DNS servers")
cmd.Var(&flDNSSearch, []string{"-dns-search"}, "Set custom DNS search domains")
cmd.Var(&flDNSOptions, []string{"-dns-opt"}, "Set DNS options")
cmd.Var(&flExtraHosts, []string{"-add-host"}, "Add a custom host-to-IP mapping (host:ip)")
cmd.Var(&flVolumesFrom, []string{"-volumes-from"}, "Mount volumes from the specified container(s)")
cmd.Var(&flCapAdd, []string{"-cap-add"}, "Add Linux capabilities")
cmd.Var(&flCapDrop, []string{"-cap-drop"}, "Drop Linux capabilities")
cmd.Var(&flGroupAdd, []string{"-group-add"}, "Add additional groups to join")
cmd.Var(&flSecurityOpt, []string{"-security-opt"}, "Security Options")
cmd.Var(flUlimits, []string{"-ulimit"}, "Ulimit options")
cmd.Var(&flLoggingOpts, []string{"-log-opt"}, "Log driver options")
cmd.Require(flag.Min, 1)
if err := cmd.ParseFlags(args, true); err != nil {
return nil, nil, cmd, err
}
var (
attachStdin = flAttach.Get("stdin")
attachStdout = flAttach.Get("stdout")
attachStderr = flAttach.Get("stderr")
)
// Validate the input mac address
if *flMacAddress != "" {
if _, err := opts.ValidateMACAddress(*flMacAddress); err != nil {
return nil, nil, cmd, fmt.Errorf("%s is not a valid mac address", *flMacAddress)
}
}
if *flStdin {
attachStdin = true
}
// If -a is not set attach to the output stdio
if flAttach.Len() == 0 {
attachStdout = true
attachStderr = true
}
var err error
var flMemory int64
if *flMemoryString != "" {
flMemory, err = units.RAMInBytes(*flMemoryString)
if err != nil {
return nil, nil, cmd, err
}
}
var MemoryReservation int64
if *flMemoryReservation != "" {
MemoryReservation, err = units.RAMInBytes(*flMemoryReservation)
if err != nil {
return nil, nil, cmd, err
}
}
var memorySwap int64
if *flMemorySwap != "" {
if *flMemorySwap == "-1" {
memorySwap = -1
} else {
memorySwap, err = units.RAMInBytes(*flMemorySwap)
if err != nil {
return nil, nil, cmd, err
}
}
}
var KernelMemory int64
if *flKernelMemory != "" {
KernelMemory, err = units.RAMInBytes(*flKernelMemory)
if err != nil {
return nil, nil, cmd, err
}
}
swappiness := *flSwappiness
if swappiness != -1 && (swappiness < 0 || swappiness > 100) {
return nil, nil, cmd, fmt.Errorf("Invalid value: %d. Valid memory swappiness range is 0-100", swappiness)
}
var shmSize int64
if *flShmSize != "" {
shmSize, err = units.RAMInBytes(*flShmSize)
if err != nil {
return nil, nil, cmd, err
}
}
var binds []string
// add any bind targets to the list of container volumes
for bind := range flVolumes.GetMap() {
if arr := volumeSplitN(bind, 2); len(arr) > 1 {
// after creating the bind mount we want to delete it from the flVolumes values because
// we do not want bind mounts being committed to image configs
binds = append(binds, bind)
flVolumes.Delete(bind)
}
}
// Can't evaluate options passed into --tmpfs until we actually mount
tmpfs := make(map[string]string)
for _, t := range flTmpfs.GetAll() {
if arr := strings.SplitN(t, ":", 2); len(arr) > 1 {
if _, _, err := mount.ParseTmpfsOptions(arr[1]); err != nil {
return nil, nil, cmd, err
}
tmpfs[arr[0]] = arr[1]
} else {
tmpfs[arr[0]] = ""
}
}
var (
parsedArgs = cmd.Args()
runCmd *strslice.StrSlice
entrypoint *strslice.StrSlice
image = cmd.Arg(0)
)
if len(parsedArgs) > 1 {
runCmd = strslice.New(parsedArgs[1:]...)
}
if *flEntrypoint != "" {
entrypoint = strslice.New(*flEntrypoint)
}
var (
domainname string
hostname = *flHostname
parts = strings.SplitN(hostname, ".", 2)
)
if len(parts) > 1 {
hostname = parts[0]
domainname = parts[1]
}
ports, portBindings, err := nat.ParsePortSpecs(flPublish.GetAll())
if err != nil {
return nil, nil, cmd, err
}
// Merge in exposed ports to the map of published ports
for _, e := range flExpose.GetAll() {
if strings.Contains(e, ":") {
return nil, nil, cmd, fmt.Errorf("Invalid port format for --expose: %s", e)
}
//support two formats for expose, original format <portnum>/[<proto>] or <startport-endport>/[<proto>]
proto, port := nat.SplitProtoPort(e)
//parse the start and end port and create a sequence of ports to expose
//if expose a port, the start and end port are the same
start, end, err := nat.ParsePortRange(port)
if err != nil {
return nil, nil, cmd, fmt.Errorf("Invalid range format for --expose: %s, error: %s", e, err)
}
for i := start; i <= end; i++ {
p, err := nat.NewPort(proto, strconv.FormatUint(i, 10))
if err != nil {
return nil, nil, cmd, err
}
if _, exists := ports[p]; !exists {
ports[p] = struct{}{}
}
}
}
// parse device mappings
deviceMappings := []container.DeviceMapping{}
for _, device := range flDevices.GetAll() {
deviceMapping, err := ParseDevice(device)
if err != nil {
return nil, nil, cmd, err
}
deviceMappings = append(deviceMappings, deviceMapping)
}
// collect all the environment variables for the container
envVariables, err := readKVStrings(flEnvFile.GetAll(), flEnv.GetAll())
if err != nil {
return nil, nil, cmd, err
}
// collect all the labels for the container
labels, err := readKVStrings(flLabelsFile.GetAll(), flLabels.GetAll())
if err != nil {
return nil, nil, cmd, err
}
ipcMode := container.IpcMode(*flIpcMode)
if !ipcMode.Valid() {
return nil, nil, cmd, fmt.Errorf("--ipc: invalid IPC mode")
}
pidMode := container.PidMode(*flPidMode)
if !pidMode.Valid() {
return nil, nil, cmd, fmt.Errorf("--pid: invalid PID mode")
}
utsMode := container.UTSMode(*flUTSMode)
if !utsMode.Valid() {
return nil, nil, cmd, fmt.Errorf("--uts: invalid UTS mode")
}
restartPolicy, err := ParseRestartPolicy(*flRestartPolicy)
if err != nil {
return nil, nil, cmd, err
}
loggingOpts, err := parseLoggingOpts(*flLoggingDriver, flLoggingOpts.GetAll())
if err != nil {
return nil, nil, cmd, err
}
resources := container.Resources{
CgroupParent: *flCgroupParent,
Memory: flMemory,
MemoryReservation: MemoryReservation,
MemorySwap: memorySwap,
MemorySwappiness: flSwappiness,
KernelMemory: KernelMemory,
OomKillDisable: *flOomKillDisable,
CPUShares: *flCPUShares,
CPUPeriod: *flCPUPeriod,
CpusetCpus: *flCpusetCpus,
CpusetMems: *flCpusetMems,
CPUQuota: *flCPUQuota,
BlkioWeight: *flBlkioWeight,
BlkioWeightDevice: flBlkioWeightDevice.GetList(),
BlkioDeviceReadBps: flDeviceReadBps.GetList(),
BlkioDeviceWriteBps: flDeviceWriteBps.GetList(),
BlkioDeviceReadIOps: flDeviceReadIOps.GetList(),
BlkioDeviceWriteIOps: flDeviceWriteIOps.GetList(),
Ulimits: flUlimits.GetList(),
Devices: deviceMappings,
}
config := &container.Config{
Hostname: hostname,
Domainname: domainname,
ExposedPorts: ports,
User: *flUser,
Tty: *flTty,
// TODO: deprecated, it comes from -n, --networking
// it's still needed internally to set the network to disabled
// if e.g. bridge is none in daemon opts, and in inspect
NetworkDisabled: false,
OpenStdin: *flStdin,
AttachStdin: attachStdin,
AttachStdout: attachStdout,
AttachStderr: attachStderr,
Env: envVariables,
Cmd: runCmd,
Image: image,
Volumes: flVolumes.GetMap(),
MacAddress: *flMacAddress,
Entrypoint: entrypoint,
WorkingDir: *flWorkingDir,
Labels: ConvertKVStringsToMap(labels),
StopSignal: *flStopSignal,
}
hostConfig := &container.HostConfig{
Binds: binds,
ContainerIDFile: *flContainerIDFile,
OomScoreAdj: *flOomScoreAdj,
Privileged: *flPrivileged,
PortBindings: portBindings,
Links: flLinks.GetAll(),
PublishAllPorts: *flPublishAll,
// Make sure the dns fields are never nil.
// New containers don't ever have those fields nil,
// but pre created containers can still have those nil values.
// See https://github.com/docker/docker/pull/17779
// for a more detailed explanation on why we don't want that.
DNS: flDNS.GetAllOrEmpty(),
DNSSearch: flDNSSearch.GetAllOrEmpty(),
DNSOptions: flDNSOptions.GetAllOrEmpty(),
ExtraHosts: flExtraHosts.GetAll(),
VolumesFrom: flVolumesFrom.GetAll(),
NetworkMode: container.NetworkMode(*flNetMode),
IpcMode: ipcMode,
PidMode: pidMode,
UTSMode: utsMode,
CapAdd: strslice.New(flCapAdd.GetAll()...),
CapDrop: strslice.New(flCapDrop.GetAll()...),
GroupAdd: flGroupAdd.GetAll(),
RestartPolicy: restartPolicy,
SecurityOpt: flSecurityOpt.GetAll(),
ReadonlyRootfs: *flReadonlyRootfs,
LogConfig: container.LogConfig{Type: *flLoggingDriver, Config: loggingOpts},
VolumeDriver: *flVolumeDriver,
Isolation: container.IsolationLevel(*flIsolation),
ShmSize: shmSize,
Resources: resources,
Tmpfs: tmpfs,
}
// When allocating stdin in attached mode, close stdin at client disconnect
if config.OpenStdin && config.AttachStdin {
config.StdinOnce = true
}
return config, hostConfig, cmd, nil
}
// IsPreDefinedNetwork indicates if a network is predefined by the daemon
func IsPreDefinedNetwork(network string) bool {
return !container.NetworkMode(network).IsUserDefined()
}
// Convert converts a service configuration to an docker API structures (Config and HostConfig)
func Convert(c *config.ServiceConfig, ctx project.Context) (*container.Config, *container.HostConfig, error) {
restartPolicy, err := restartPolicy(c)
if err != nil {
return nil, nil, err
}
exposedPorts, portBindings, err := ports(c)
if err != nil {
return nil, nil, err
}
deviceMappings, err := parseDevices(c.Devices)
if err != nil {
return nil, nil, err
}
var volumesFrom []string
if c.VolumesFrom != nil {
volumesFrom, err = getVolumesFrom(c.VolumesFrom, ctx.Project.ServiceConfigs, ctx.ProjectName)
if err != nil {
return nil, nil, err
}
}
vols := volumes(c, ctx)
config := &container.Config{
Entrypoint: strslice.StrSlice(utils.CopySlice(c.Entrypoint)),
Hostname: c.Hostname,
Domainname: c.DomainName,
User: c.User,
Env: utils.CopySlice(c.Environment),
Cmd: strslice.StrSlice(utils.CopySlice(c.Command)),
Image: c.Image,
Labels: utils.CopyMap(c.Labels),
ExposedPorts: exposedPorts,
Tty: c.Tty,
OpenStdin: c.StdinOpen,
WorkingDir: c.WorkingDir,
Volumes: toMap(Filter(vols, isVolume)),
MacAddress: c.MacAddress,
StopSignal: c.StopSignal,
}
ulimits := []*units.Ulimit{}
if c.Ulimits.Elements != nil {
for _, ulimit := range c.Ulimits.Elements {
ulimits = append(ulimits, &units.Ulimit{
Name: ulimit.Name,
Soft: ulimit.Soft,
Hard: ulimit.Hard,
})
}
}
memorySwappiness := int64(c.MemSwappiness)
tmpfs := map[string]string{}
for _, path := range c.Tmpfs {
split := strings.SplitN(path, ":", 2)
if len(split) == 1 {
tmpfs[split[0]] = ""
} else if len(split) == 2 {
tmpfs[split[0]] = split[1]
}
}
blkioWeightDevices := []*blkiodev.WeightDevice{}
for _, blkioWeightDevice := range c.BlkioWeightDevice {
split := strings.Split(blkioWeightDevice, ":")
if len(split) == 2 {
weight, err := strconv.ParseUint(split[1], 10, 16)
if err != nil {
return nil, nil, err
}
blkioWeightDevices = append(blkioWeightDevices, &blkiodev.WeightDevice{
Path: split[0],
Weight: uint16(weight),
})
}
}
blkioDeviceReadBps, err := getThrottleDevice(c.DeviceReadBps)
if err != nil {
return nil, nil, err
}
blkioDeviceReadIOps, err := getThrottleDevice(c.DeviceReadIOps)
if err != nil {
return nil, nil, err
}
blkioDeviceWriteBps, err := getThrottleDevice(c.DeviceWriteBps)
if err != nil {
return nil, nil, err
}
blkioDeviceWriteIOps, err := getThrottleDevice(c.DeviceWriteIOps)
if err != nil {
return nil, nil, err
}
resources := container.Resources{
BlkioWeight: uint16(c.BlkioWeight),
BlkioWeightDevice: blkioWeightDevices,
CgroupParent: c.CgroupParent,
Memory: int64(c.MemLimit),
MemoryReservation: int64(c.MemReservation),
MemorySwap: int64(c.MemSwapLimit),
MemorySwappiness: &memorySwappiness,
CPUPeriod: int64(c.CPUPeriod),
CPUShares: int64(c.CPUShares),
CPUQuota: int64(c.CPUQuota),
CpusetCpus: c.CPUSet,
Ulimits: ulimits,
Devices: deviceMappings,
OomKillDisable: &c.OomKillDisable,
BlkioDeviceReadBps: blkioDeviceReadBps,
BlkioDeviceReadIOps: blkioDeviceReadIOps,
BlkioDeviceWriteBps: blkioDeviceWriteBps,
BlkioDeviceWriteIOps: blkioDeviceWriteIOps,
}
hostConfig := &container.HostConfig{
VolumesFrom: volumesFrom,
CapAdd: strslice.StrSlice(utils.CopySlice(c.CapAdd)),
CapDrop: strslice.StrSlice(utils.CopySlice(c.CapDrop)),
GroupAdd: c.GroupAdd,
ExtraHosts: utils.CopySlice(c.ExtraHosts),
Privileged: c.Privileged,
Binds: Filter(vols, isBind),
DNS: utils.CopySlice(c.DNS),
DNSOptions: utils.CopySlice(c.DNSOpt),
DNSSearch: utils.CopySlice(c.DNSSearch),
Isolation: container.Isolation(c.Isolation),
LogConfig: container.LogConfig{
Type: c.Logging.Driver,
Config: utils.CopyMap(c.Logging.Options),
},
NetworkMode: container.NetworkMode(c.NetworkMode),
ReadonlyRootfs: c.ReadOnly,
OomScoreAdj: int(c.OomScoreAdj),
PidMode: container.PidMode(c.Pid),
UTSMode: container.UTSMode(c.Uts),
IpcMode: container.IpcMode(c.Ipc),
PortBindings: portBindings,
RestartPolicy: *restartPolicy,
ShmSize: int64(c.ShmSize),
SecurityOpt: utils.CopySlice(c.SecurityOpt),
Tmpfs: tmpfs,
VolumeDriver: c.VolumeDriver,
Resources: resources,
}
if config.Labels == nil {
config.Labels = map[string]string{}
}
return config, hostConfig, nil
}