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Allow network configuration via daemon config file.

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Signed-off-by: David Calavera <david.calavera@gmail.com>
This commit is contained in:
David Calavera 2016-01-25 16:30:33 -05:00
parent 997e61add9
commit c539be8833
9 changed files with 116 additions and 60 deletions
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2
daemon/config.go
View file

@ -45,7 +45,6 @@ type CommonTLSOptions struct {
type CommonConfig struct {
AuthorizationPlugins []string `json:"authorization-plugins,omitempty"` // AuthorizationPlugins holds list of authorization plugins
AutoRestart bool `json:"-"`
Bridge bridgeConfig `json:"-"` // Bridge holds bridge network specific configuration.
Context map[string][]string `json:"-"`
DisableBridge bool `json:"-"`
DNS []string `json:"dns,omitempty"`
@ -85,6 +84,7 @@ type CommonConfig struct {
// deserialization without the full struct.
CommonTLSOptions
LogConfig
bridgeConfig // bridgeConfig holds bridge network specific configuration.
reloadLock sync.Mutex
valuesSet map[string]interface{}

52
daemon/config_unix.go
View file

@ -37,19 +37,19 @@ type Config struct {
// bridgeConfig stores all the bridge driver specific
// configuration.
type bridgeConfig struct {
EnableIPv6 bool
EnableIPTables bool
EnableIPForward bool
EnableIPMasq bool
EnableUserlandProxy bool
DefaultIP net.IP
Iface string
IP string
FixedCIDR string
FixedCIDRv6 string
DefaultGatewayIPv4 net.IP
DefaultGatewayIPv6 net.IP
InterContainerCommunication bool
EnableIPv6 bool `json:"ipv6,omitempty"`
EnableIPTables bool `json:"iptables,omitempty"`
EnableIPForward bool `json:"ip-forward,omitempty"`
EnableIPMasq bool `json:"ip-mask,omitempty"`
EnableUserlandProxy bool `json:"userland-proxy,omitempty"`
DefaultIP net.IP `json:"ip,omitempty"`
Iface string `json:"bridge,omitempty"`
IP string `json:"bip,omitempty"`
FixedCIDR string `json:"fixed-cidr,omitempty"`
FixedCIDRv6 string `json:"fixed-cidr-v6,omitempty"`
DefaultGatewayIPv4 net.IP `json:"default-gateway,omitempty"`
DefaultGatewayIPv6 net.IP `json:"default-gateway-v6,omitempty"`
InterContainerCommunication bool `json:"icc,omitempty"`
}
// InstallFlags adds command-line options to the top-level flag parser for
@ -65,19 +65,19 @@ func (config *Config) InstallFlags(cmd *flag.FlagSet, usageFn func(string) strin
cmd.StringVar(&config.SocketGroup, []string{"G", "-group"}, "docker", usageFn("Group for the unix socket"))
config.Ulimits = make(map[string]*units.Ulimit)
cmd.Var(runconfigopts.NewUlimitOpt(&config.Ulimits), []string{"-default-ulimit"}, usageFn("Set default ulimits for containers"))
cmd.BoolVar(&config.Bridge.EnableIPTables, []string{"#iptables", "-iptables"}, true, usageFn("Enable addition of iptables rules"))
cmd.BoolVar(&config.Bridge.EnableIPForward, []string{"#ip-forward", "-ip-forward"}, true, usageFn("Enable net.ipv4.ip_forward"))
cmd.BoolVar(&config.Bridge.EnableIPMasq, []string{"-ip-masq"}, true, usageFn("Enable IP masquerading"))
cmd.BoolVar(&config.Bridge.EnableIPv6, []string{"-ipv6"}, false, usageFn("Enable IPv6 networking"))
cmd.StringVar(&config.Bridge.IP, []string{"#bip", "-bip"}, "", usageFn("Specify network bridge IP"))
cmd.StringVar(&config.Bridge.Iface, []string{"b", "-bridge"}, "", usageFn("Attach containers to a network bridge"))
cmd.StringVar(&config.Bridge.FixedCIDR, []string{"-fixed-cidr"}, "", usageFn("IPv4 subnet for fixed IPs"))
cmd.StringVar(&config.Bridge.FixedCIDRv6, []string{"-fixed-cidr-v6"}, "", usageFn("IPv6 subnet for fixed IPs"))
cmd.Var(opts.NewIPOpt(&config.Bridge.DefaultGatewayIPv4, ""), []string{"-default-gateway"}, usageFn("Container default gateway IPv4 address"))
cmd.Var(opts.NewIPOpt(&config.Bridge.DefaultGatewayIPv6, ""), []string{"-default-gateway-v6"}, usageFn("Container default gateway IPv6 address"))
cmd.BoolVar(&config.Bridge.InterContainerCommunication, []string{"#icc", "-icc"}, true, usageFn("Enable inter-container communication"))
cmd.Var(opts.NewIPOpt(&config.Bridge.DefaultIP, "0.0.0.0"), []string{"#ip", "-ip"}, usageFn("Default IP when binding container ports"))
cmd.BoolVar(&config.Bridge.EnableUserlandProxy, []string{"-userland-proxy"}, true, usageFn("Use userland proxy for loopback traffic"))
cmd.BoolVar(&config.bridgeConfig.EnableIPTables, []string{"#iptables", "-iptables"}, true, usageFn("Enable addition of iptables rules"))
cmd.BoolVar(&config.bridgeConfig.EnableIPForward, []string{"#ip-forward", "-ip-forward"}, true, usageFn("Enable net.ipv4.ip_forward"))
cmd.BoolVar(&config.bridgeConfig.EnableIPMasq, []string{"-ip-masq"}, true, usageFn("Enable IP masquerading"))
cmd.BoolVar(&config.bridgeConfig.EnableIPv6, []string{"-ipv6"}, false, usageFn("Enable IPv6 networking"))
cmd.StringVar(&config.bridgeConfig.IP, []string{"#bip", "-bip"}, "", usageFn("Specify network bridge IP"))
cmd.StringVar(&config.bridgeConfig.Iface, []string{"b", "-bridge"}, "", usageFn("Attach containers to a network bridge"))
cmd.StringVar(&config.bridgeConfig.FixedCIDR, []string{"-fixed-cidr"}, "", usageFn("IPv4 subnet for fixed IPs"))
cmd.StringVar(&config.bridgeConfig.FixedCIDRv6, []string{"-fixed-cidr-v6"}, "", usageFn("IPv6 subnet for fixed IPs"))
cmd.Var(opts.NewIPOpt(&config.bridgeConfig.DefaultGatewayIPv4, ""), []string{"-default-gateway"}, usageFn("Container default gateway IPv4 address"))
cmd.Var(opts.NewIPOpt(&config.bridgeConfig.DefaultGatewayIPv6, ""), []string{"-default-gateway-v6"}, usageFn("Container default gateway IPv6 address"))
cmd.BoolVar(&config.bridgeConfig.InterContainerCommunication, []string{"#icc", "-icc"}, true, usageFn("Enable inter-container communication"))
cmd.Var(opts.NewIPOpt(&config.bridgeConfig.DefaultIP, "0.0.0.0"), []string{"#ip", "-ip"}, usageFn("Default IP when binding container ports"))
cmd.BoolVar(&config.bridgeConfig.EnableUserlandProxy, []string{"-userland-proxy"}, true, usageFn("Use userland proxy for loopback traffic"))
cmd.BoolVar(&config.EnableCors, []string{"#api-enable-cors", "#-api-enable-cors"}, false, usageFn("Enable CORS headers in the remote API, this is deprecated by --api-cors-header"))
cmd.StringVar(&config.CorsHeaders, []string{"-api-cors-header"}, "", usageFn("Set CORS headers in the remote API"))
cmd.StringVar(&config.CgroupParent, []string{"-cgroup-parent"}, "", usageFn("Set parent cgroup for all containers"))

4
daemon/config_windows.go
View file

@ -15,7 +15,7 @@ var (
// bridgeConfig stores all the bridge driver specific
// configuration.
type bridgeConfig struct {
VirtualSwitchName string
VirtualSwitchName string `json:"bridge,omitempty"`
}
// Config defines the configuration of a docker daemon.
@ -37,5 +37,5 @@ func (config *Config) InstallFlags(cmd *flag.FlagSet, usageFn func(string) strin
config.InstallCommonFlags(cmd, usageFn)
// Then platform-specific install flags.
cmd.StringVar(&config.Bridge.VirtualSwitchName, []string{"b", "-bridge"}, "", "Attach containers to a virtual switch")
cmd.StringVar(&config.bridgeConfig.VirtualSwitchName, []string{"b", "-bridge"}, "", "Attach containers to a virtual switch")
}

2
daemon/container_operations_unix.go
View file

@ -513,7 +513,7 @@ func (daemon *Daemon) updateEndpointNetworkSettings(container *container.Contain
}
if container.HostConfig.NetworkMode == containertypes.NetworkMode("bridge") {
container.NetworkSettings.Bridge = daemon.configStore.Bridge.Iface
container.NetworkSettings.Bridge = daemon.configStore.bridgeConfig.Iface
}
return nil

2
daemon/container_operations_windows.go
View file

@ -54,7 +54,7 @@ func (daemon *Daemon) populateCommand(c *container.Container, env []string) erro
if !c.Config.NetworkDisabled {
en.Interface = &execdriver.NetworkInterface{
MacAddress: c.Config.MacAddress,
Bridge: daemon.configStore.Bridge.VirtualSwitchName,
Bridge: daemon.configStore.bridgeConfig.VirtualSwitchName,
PortBindings: c.HostConfig.PortBindings,
// TODO Windows. Include IPAddress. There already is a

52
daemon/daemon_unix.go
View file

@ -412,14 +412,14 @@ func verifyPlatformContainerSettings(daemon *Daemon, hostConfig *containertypes.
// checkConfigOptions checks for mutually incompatible config options
func checkConfigOptions(config *Config) error {
// Check for mutually incompatible config options
if config.Bridge.Iface != "" && config.Bridge.IP != "" {
if config.bridgeConfig.Iface != "" && config.bridgeConfig.IP != "" {
return fmt.Errorf("You specified -b & --bip, mutually exclusive options. Please specify only one.")
}
if !config.Bridge.EnableIPTables && !config.Bridge.InterContainerCommunication {
if !config.bridgeConfig.EnableIPTables && !config.bridgeConfig.InterContainerCommunication {
return fmt.Errorf("You specified --iptables=false with --icc=false. ICC=false uses iptables to function. Please set --icc or --iptables to true.")
}
if !config.Bridge.EnableIPTables && config.Bridge.EnableIPMasq {
config.Bridge.EnableIPMasq = false
if !config.bridgeConfig.EnableIPTables && config.bridgeConfig.EnableIPMasq {
config.bridgeConfig.EnableIPMasq = false
}
return nil
}
@ -451,7 +451,7 @@ func configureKernelSecuritySupport(config *Config, driverName string) error {
}
func isBridgeNetworkDisabled(config *Config) bool {
return config.Bridge.Iface == disableNetworkBridge
return config.bridgeConfig.Iface == disableNetworkBridge
}
func (daemon *Daemon) networkOptions(dconfig *Config) ([]nwconfig.Option, error) {
@ -525,9 +525,9 @@ func (daemon *Daemon) initNetworkController(config *Config) (libnetwork.NetworkC
func driverOptions(config *Config) []nwconfig.Option {
bridgeConfig := options.Generic{
"EnableIPForwarding": config.Bridge.EnableIPForward,
"EnableIPTables": config.Bridge.EnableIPTables,
"EnableUserlandProxy": config.Bridge.EnableUserlandProxy}
"EnableIPForwarding": config.bridgeConfig.EnableIPForward,
"EnableIPTables": config.bridgeConfig.EnableIPTables,
"EnableUserlandProxy": config.bridgeConfig.EnableUserlandProxy}
bridgeOption := options.Generic{netlabel.GenericData: bridgeConfig}
dOptions := []nwconfig.Option{}
@ -543,20 +543,20 @@ func initBridgeDriver(controller libnetwork.NetworkController, config *Config) e
}
bridgeName := bridge.DefaultBridgeName
if config.Bridge.Iface != "" {
bridgeName = config.Bridge.Iface
if config.bridgeConfig.Iface != "" {
bridgeName = config.bridgeConfig.Iface
}
netOption := map[string]string{
bridge.BridgeName: bridgeName,
bridge.DefaultBridge: strconv.FormatBool(true),
netlabel.DriverMTU: strconv.Itoa(config.Mtu),
bridge.EnableIPMasquerade: strconv.FormatBool(config.Bridge.EnableIPMasq),
bridge.EnableICC: strconv.FormatBool(config.Bridge.InterContainerCommunication),
bridge.EnableIPMasquerade: strconv.FormatBool(config.bridgeConfig.EnableIPMasq),
bridge.EnableICC: strconv.FormatBool(config.bridgeConfig.InterContainerCommunication),
}
// --ip processing
if config.Bridge.DefaultIP != nil {
netOption[bridge.DefaultBindingIP] = config.Bridge.DefaultIP.String()
if config.bridgeConfig.DefaultIP != nil {
netOption[bridge.DefaultBindingIP] = config.bridgeConfig.DefaultIP.String()
}
var (
@ -575,9 +575,9 @@ func initBridgeDriver(controller libnetwork.NetworkController, config *Config) e
}
}
if config.Bridge.IP != "" {
ipamV4Conf.PreferredPool = config.Bridge.IP
ip, _, err := net.ParseCIDR(config.Bridge.IP)
if config.bridgeConfig.IP != "" {
ipamV4Conf.PreferredPool = config.bridgeConfig.IP
ip, _, err := net.ParseCIDR(config.bridgeConfig.IP)
if err != nil {
return err
}
@ -586,8 +586,8 @@ func initBridgeDriver(controller libnetwork.NetworkController, config *Config) e
logrus.Infof("Default bridge (%s) is assigned with an IP address %s. Daemon option --bip can be used to set a preferred IP address", bridgeName, ipamV4Conf.PreferredPool)
}
if config.Bridge.FixedCIDR != "" {
_, fCIDR, err := net.ParseCIDR(config.Bridge.FixedCIDR)
if config.bridgeConfig.FixedCIDR != "" {
_, fCIDR, err := net.ParseCIDR(config.bridgeConfig.FixedCIDR)
if err != nil {
return err
}
@ -595,13 +595,13 @@ func initBridgeDriver(controller libnetwork.NetworkController, config *Config) e
ipamV4Conf.SubPool = fCIDR.String()
}
if config.Bridge.DefaultGatewayIPv4 != nil {
ipamV4Conf.AuxAddresses["DefaultGatewayIPv4"] = config.Bridge.DefaultGatewayIPv4.String()
if config.bridgeConfig.DefaultGatewayIPv4 != nil {
ipamV4Conf.AuxAddresses["DefaultGatewayIPv4"] = config.bridgeConfig.DefaultGatewayIPv4.String()
}
var deferIPv6Alloc bool
if config.Bridge.FixedCIDRv6 != "" {
_, fCIDRv6, err := net.ParseCIDR(config.Bridge.FixedCIDRv6)
if config.bridgeConfig.FixedCIDRv6 != "" {
_, fCIDRv6, err := net.ParseCIDR(config.bridgeConfig.FixedCIDRv6)
if err != nil {
return err
}
@ -631,11 +631,11 @@ func initBridgeDriver(controller libnetwork.NetworkController, config *Config) e
}
}
if config.Bridge.DefaultGatewayIPv6 != nil {
if config.bridgeConfig.DefaultGatewayIPv6 != nil {
if ipamV6Conf == nil {
ipamV6Conf = &libnetwork.IpamConf{AuxAddresses: make(map[string]string)}
}
ipamV6Conf.AuxAddresses["DefaultGatewayIPv6"] = config.Bridge.DefaultGatewayIPv6.String()
ipamV6Conf.AuxAddresses["DefaultGatewayIPv6"] = config.bridgeConfig.DefaultGatewayIPv6.String()
}
v4Conf := []*libnetwork.IpamConf{ipamV4Conf}
@ -647,7 +647,7 @@ func initBridgeDriver(controller libnetwork.NetworkController, config *Config) e
_, err = controller.NewNetwork("bridge", "bridge",
libnetwork.NetworkOptionGeneric(options.Generic{
netlabel.GenericData: netOption,
netlabel.EnableIPv6: config.Bridge.EnableIPv6,
netlabel.EnableIPv6: config.bridgeConfig.EnableIPv6,
}),
libnetwork.NetworkOptionIpam("default", "", v4Conf, v6Conf, nil),
libnetwork.NetworkOptionDeferIPv6Alloc(deferIPv6Alloc))

4
daemon/daemon_windows.go
View file

@ -121,8 +121,8 @@ func isBridgeNetworkDisabled(config *Config) bool {
func (daemon *Daemon) initNetworkController(config *Config) (libnetwork.NetworkController, error) {
// Set the name of the virtual switch if not specified by -b on daemon start
if config.Bridge.VirtualSwitchName == "" {
config.Bridge.VirtualSwitchName = defaultVirtualSwitch
if config.bridgeConfig.VirtualSwitchName == "" {
config.bridgeConfig.VirtualSwitchName = defaultVirtualSwitch
}
return nil, nil
}

43
docker/daemon_unix_test.go Normal file
View file

@ -0,0 +1,43 @@
// +build daemon,!windows
package main
import (
"io/ioutil"
"testing"
"github.com/docker/docker/cli"
"github.com/docker/docker/daemon"
"github.com/docker/docker/pkg/mflag"
)
func TestLoadDaemonConfigWithNetwork(t *testing.T) {
c := &daemon.Config{}
common := &cli.CommonFlags{}
flags := mflag.NewFlagSet("test", mflag.ContinueOnError)
flags.String([]string{"-bip"}, "", "")
flags.String([]string{"-ip"}, "", "")
f, err := ioutil.TempFile("", "docker-config-")
if err != nil {
t.Fatal(err)
}
configFile := f.Name()
f.Write([]byte(`{"bip": "127.0.0.2", "ip": "127.0.0.1"}`))
f.Close()
loadedConfig, err := loadDaemonCliConfig(c, flags, common, configFile)
if err != nil {
t.Fatal(err)
}
if loadedConfig == nil {
t.Fatalf("expected configuration %v, got nil", c)
}
if loadedConfig.IP != "127.0.0.2" {
t.Fatalf("expected IP 127.0.0.2, got %v", loadedConfig.IP)
}
if loadedConfig.DefaultIP.String() != "127.0.0.1" {
t.Fatalf("expected DefaultIP 127.0.0.1, got %s", loadedConfig.DefaultIP)
}
}

15
docs/reference/commandline/daemon.md
View file

@ -859,7 +859,20 @@ This is a full example of the allowed configuration options in the file:
"userns-remap": "",
"group": "",
"cgroup-parent": "",
"default-ulimits": {}
"default-ulimits": {},
"ipv6": false,
"iptables": false,
"ip-forward": false,
"ip-mask": false,
"userland-proxy": false,
"ip": "0.0.0.0",
"bridge": "",
"bip": "",
"fixed-cidr": "",
"fixed-cidr-v6": "",
"default-gateway": "",
"default-gateway-v6": "",
"icc": false
}
```