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Handling iptables() errors more usefully during portmapper setup

This commit is contained in:
Shawn Siefkas 2013-03-28 14:44:54 -05:00
parent c66d2b6a53
commit 523803d633
1 changed files with 3 additions and 3 deletions
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6
network.go
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@ -124,13 +124,13 @@ func (mapper *PortMapper) cleanup() error {
func (mapper *PortMapper) setup() error {
if err := iptables("-t", "nat", "-N", "DOCKER"); err != nil {
return errors.New("Unable to setup port networking: Failed to create DOCKER chain")
return fmt.Errorf("Failed to create DOCKER chain: %s", err)
}
if err := iptables("-t", "nat", "-A", "PREROUTING", "-j", "DOCKER"); err != nil {
return errors.New("Unable to setup port networking: Failed to inject docker in PREROUTING chain")
return fmt.Errorf("Failed to inject docker in PREROUTING chain: %s", err)
}
if err := iptables("-t", "nat", "-A", "OUTPUT", "-j", "DOCKER"); err != nil {
return errors.New("Unable to setup port networking: Failed to inject docker in OUTPUT chain")
return fmt.Errorf("Failed to inject docker in OUTPUT chain: %s", err)
}
return nil
}