Exemple #1
0
// Init registers a new instance of bridge driver
func Init(dc driverapi.DriverCallback, config map[string]interface{}) error {
	if _, err := os.Stat("/proc/sys/net/bridge"); err != nil {
		if out, err := exec.Command("modprobe", "-va", "bridge", "br_netfilter").CombinedOutput(); err != nil {
			logrus.Warnf("Running modprobe bridge br_netfilter failed with message: %s, error: %v", out, err)
		}
	}
	if out, err := exec.Command("modprobe", "-va", "nf_nat").CombinedOutput(); err != nil {
		logrus.Warnf("Running modprobe nf_nat failed with message: `%s`, error: %v", strings.TrimSpace(string(out)), err)
	}
	if err := iptables.FirewalldInit(); err != nil {
		logrus.Debugf("Fail to initialize firewalld: %v, using raw iptables instead", err)
	}
	if err := iptables.RemoveExistingChain(DockerChain, iptables.Nat); err != nil {
		logrus.Warnf("Failed to remove existing iptables entries in %s : %v", DockerChain, err)
	}

	d := newDriver()
	if err := d.configure(config); err != nil {
		return err
	}

	c := driverapi.Capability{
		DataScope: datastore.LocalScope,
	}
	return dc.RegisterDriver(networkType, d, c)
}
func setupIPChains(config *configuration) (*iptables.ChainInfo, *iptables.ChainInfo, error) {
	// Sanity check.
	if config.EnableIPTables == false {
		return nil, nil, fmt.Errorf("Cannot create new chains, EnableIPTable is disabled")
	}

	hairpinMode := !config.EnableUserlandProxy

	natChain, err := iptables.NewChain(DockerChain, iptables.Nat, hairpinMode)
	if err != nil {
		return nil, nil, fmt.Errorf("Failed to create NAT chain: %s", err.Error())
	}
	defer func() {
		if err != nil {
			if err := iptables.RemoveExistingChain(DockerChain, iptables.Nat); err != nil {
				logrus.Warnf("Failed on removing iptables NAT chain on cleanup: %v", err)
			}
		}
	}()

	filterChain, err := iptables.NewChain(DockerChain, iptables.Filter, hairpinMode)
	if err != nil {
		return nil, nil, fmt.Errorf("Failed to create FILTER chain: %s", err.Error())
	}

	return natChain, filterChain, nil
}
Exemple #3
0
// Init registers a new instance of bridge driver
func Init(dc driverapi.DriverCallback) error {
	// try to modprobe bridge first
	// see gh#12177
	if out, err := exec.Command("modprobe", "-va", "bridge", "nf_nat", "br_netfilter").Output(); err != nil {
		logrus.Warnf("Running modprobe bridge nf_nat failed with message: %s, error: %v", out, err)
	}
	if err := iptables.RemoveExistingChain(DockerChain, iptables.Nat); err != nil {
		logrus.Warnf("Failed to remove existing iptables entries in %s : %v", DockerChain, err)
	}

	return dc.RegisterDriver(networkType, newDriver())
}
Exemple #4
0
// Init registers a new instance of bridge driver
func Init(dc driverapi.DriverCallback) error {
	// try to modprobe bridge first
	// see gh#12177
	if out, err := exec.Command("modprobe", "-va", "bridge", "nf_nat", "br_netfilter").CombinedOutput(); err != nil {
		logrus.Warnf("Running modprobe bridge nf_nat br_netfilter failed with message: %s, error: %v", out, err)
	}
	if err := iptables.FirewalldInit(); err != nil {
		logrus.Debugf("Fail to initialize firewalld: %v, using raw iptables instead", err)
	}
	if err := iptables.RemoveExistingChain(DockerChain, iptables.Nat); err != nil {
		logrus.Warnf("Failed to remove existing iptables entries in %s : %v", DockerChain, err)
	}

	c := driverapi.Capability{
		Scope: driverapi.LocalScope,
	}
	return dc.RegisterDriver(networkType, newDriver(), c)
}