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Merge pull request #1040 from aboch/mp

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modprobe when needed
This commit is contained in:
Chun Chen 2016-03-22 16:36:25 +08:00
commit d60830037a
2 changed files with 24 additions and 16 deletions
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21
libnetwork/drivers/bridge/bridge.go
View file

@ -9,7 +9,6 @@ import (
"os/exec"
"path/filepath"
"strconv"
"strings"
"sync"
"syscall"
@ -130,21 +129,6 @@ func newDriver() *driver {
// 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 out, err := exec.Command("modprobe", "-va", "xt_conntrack").CombinedOutput(); err != nil {
logrus.Warnf("Running modprobe xt_conntrack 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)
}
d := newDriver()
if err := d.configure(config); err != nil {
return err
@ -387,6 +371,11 @@ func (d *driver) configure(option map[string]interface{}) error {
}
if config.EnableIPTables {
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)
}
}
removeIPChains()
natChain, filterChain, isolationChain, err = setupIPChains(config)
if err != nil {

19
libnetwork/iptables/iptables.go
View file

@ -42,6 +42,8 @@ var (
bestEffortLock sync.Mutex
// ErrIptablesNotFound is returned when the rule is not found.
ErrIptablesNotFound = errors.New("Iptables not found")
probeOnce sync.Once
firewalldOnce sync.Once
)
// ChainInfo defines the iptables chain.
@ -61,8 +63,25 @@ func (e ChainError) Error() string {
return fmt.Sprintf("Error iptables %s: %s", e.Chain, string(e.Output))
}
func probe() {
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 out, err := exec.Command("modprobe", "-va", "xt_conntrack").CombinedOutput(); err != nil {
logrus.Warnf("Running modprobe xt_conntrack failed with message: `%s`, error: %v", strings.TrimSpace(string(out)), err)
}
}
func initFirewalld() {
if err := FirewalldInit(); err != nil {
logrus.Debugf("Fail to initialize firewalld: %v, using raw iptables instead", err)
}
}
func initCheck() error {
if iptablesPath == "" {
probeOnce.Do(probe)
firewalldOnce.Do(initFirewalld)
path, err := exec.LookPath("iptables")
if err != nil {
return ErrIptablesNotFound