Golang iptables.Exists函數代碼示例

本文整理匯總了Golang中github.com/dotcloud/docker/pkg/iptables.Exists函數的典型用法代碼示例。如果您正苦於以下問題：Golang Exists函數的具體用法？Golang Exists怎麽用？Golang Exists使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。

在下文中一共展示了Exists函數的4個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。

示例1: TestIpTablesRulesWhenLinkAndUnlink

func TestIpTablesRulesWhenLinkAndUnlink(t *testing.T) {
	cmd(t, "run", "-d", "--name", "child", "--publish", "8080:80", "busybox", "sleep", "10")
	cmd(t, "run", "-d", "--name", "parent", "--link", "child:http", "busybox", "sleep", "10")

	childIp := findContainerIp(t, "child")
	parentIp := findContainerIp(t, "parent")

	sourceRule := []string{"FORWARD", "-i", "docker0", "-o", "docker0", "-p", "tcp", "-s", childIp, "--sport", "80", "-d", parentIp, "-j", "ACCEPT"}
	destinationRule := []string{"FORWARD", "-i", "docker0", "-o", "docker0", "-p", "tcp", "-s", parentIp, "--dport", "80", "-d", childIp, "-j", "ACCEPT"}
	if !iptables.Exists(sourceRule...) || !iptables.Exists(destinationRule...) {
		t.Fatal("Iptables rules not found")
	}

	cmd(t, "rm", "--link", "parent/http")
	if iptables.Exists(sourceRule...) || iptables.Exists(destinationRule...) {
		t.Fatal("Iptables rules should be removed when unlink")
	}

	cmd(t, "kill", "child")
	cmd(t, "kill", "parent")
	deleteAllContainers()

	logDone("link - verify iptables when link and unlink")
}

開發者ID:huodianyan，項目名稱:docker，代碼行數:24，代碼來源:docker_cli_links_test.go

示例2: setupIPTables

func setupIPTables(addr net.Addr, icc bool) error {
	// Enable NAT
	natArgs := []string{"POSTROUTING", "-t", "nat", "-s", addr.String(), "!", "-d", addr.String(), "-j", "MASQUERADE"}

	if !iptables.Exists(natArgs...) {
		if output, err := iptables.Raw(append([]string{"-I"}, natArgs...)...); err != nil {
			return fmt.Errorf("Unable to enable network bridge NAT: %s", err)
		} else if len(output) != 0 {
			return fmt.Errorf("Error iptables postrouting: %s", output)
		}
	}

	var (
		args       = []string{"FORWARD", "-i", bridgeIface, "-o", bridgeIface, "-j"}
		acceptArgs = append(args, "ACCEPT")
		dropArgs   = append(args, "DROP")
	)

	if !icc {
		iptables.Raw(append([]string{"-D"}, acceptArgs...)...)

		if !iptables.Exists(dropArgs...) {
			utils.Debugf("Disable inter-container communication")
			if output, err := iptables.Raw(append([]string{"-I"}, dropArgs...)...); err != nil {
				return fmt.Errorf("Unable to prevent intercontainer communication: %s", err)
			} else if len(output) != 0 {
				return fmt.Errorf("Error disabling intercontainer communication: %s", output)
			}
		}
	} else {
		iptables.Raw(append([]string{"-D"}, dropArgs...)...)

		if !iptables.Exists(acceptArgs...) {
			utils.Debugf("Enable inter-container communication")
			if output, err := iptables.Raw(append([]string{"-I"}, acceptArgs...)...); err != nil {
				return fmt.Errorf("Unable to allow intercontainer communication: %s", err)
			} else if len(output) != 0 {
				return fmt.Errorf("Error enabling intercontainer communication: %s", output)
			}
		}
	}

	// Accept all non-intercontainer outgoing packets
	outgoingArgs := []string{"FORWARD", "-i", bridgeIface, "!", "-o", bridgeIface, "-j", "ACCEPT"}
	if !iptables.Exists(outgoingArgs...) {
		if output, err := iptables.Raw(append([]string{"-I"}, outgoingArgs...)...); err != nil {
			return fmt.Errorf("Unable to allow outgoing packets: %s", err)
		} else if len(output) != 0 {
			return fmt.Errorf("Error iptables allow outgoing: %s", output)
		}
	}

	// Accept incoming packets for existing connections
	existingArgs := []string{"FORWARD", "-o", bridgeIface, "-m", "conntrack", "--ctstate", "RELATED,ESTABLISHED", "-j", "ACCEPT"}

	if !iptables.Exists(existingArgs...) {
		if output, err := iptables.Raw(append([]string{"-I"}, existingArgs...)...); err != nil {
			return fmt.Errorf("Unable to allow incoming packets: %s", err)
		} else if len(output) != 0 {
			return fmt.Errorf("Error iptables allow incoming: %s", output)
		}
	}
	return nil
}

開發者ID:Blackbaud-GregWyne，項目名稱:docker，代碼行數:64，代碼來源:driver.go

示例3: newNetworkManager

func newNetworkManager(config *DaemonConfig) (*NetworkManager, error) {
	if config.BridgeIface == DisableNetworkBridge {
		manager := &NetworkManager{
			disabled: true,
		}
		return manager, nil
	}

	var network *net.IPNet
	addr, err := getIfaceAddr(config.BridgeIface)
	if err != nil {
		// If the iface is not found, try to create it
		if err := CreateBridgeIface(config); err != nil {
			return nil, err
		}
		addr, err = getIfaceAddr(config.BridgeIface)
		if err != nil {
			return nil, err
		}
		network = addr.(*net.IPNet)
	} else {
		network = addr.(*net.IPNet)
	}

	// Configure iptables for link support
	if config.EnableIptables {

		// Enable NAT
		natArgs := []string{"POSTROUTING", "-t", "nat", "-s", addr.String(), "!", "-d", addr.String(), "-j", "MASQUERADE"}

		if !iptables.Exists(natArgs...) {
			if output, err := iptables.Raw(append([]string{"-A"}, natArgs...)...); err != nil {
				return nil, fmt.Errorf("Unable to enable network bridge NAT: %s", err)
			} else if len(output) != 0 {
				return nil, fmt.Errorf("Error iptables postrouting: %s", output)
			}
		}

		args := []string{"FORWARD", "-i", config.BridgeIface, "-o", config.BridgeIface, "-j"}
		acceptArgs := append(args, "ACCEPT")
		dropArgs := append(args, "DROP")

		if !config.InterContainerCommunication {
			iptables.Raw(append([]string{"-D"}, acceptArgs...)...)
			if !iptables.Exists(dropArgs...) {
				utils.Debugf("Disable inter-container communication")
				if output, err := iptables.Raw(append([]string{"-I"}, dropArgs...)...); err != nil {
					return nil, fmt.Errorf("Unable to prevent intercontainer communication: %s", err)
				} else if len(output) != 0 {
					return nil, fmt.Errorf("Error disabling intercontainer communication: %s", output)
				}
			}
		} else {
			iptables.Raw(append([]string{"-D"}, dropArgs...)...)
			if !iptables.Exists(acceptArgs...) {
				utils.Debugf("Enable inter-container communication")
				if output, err := iptables.Raw(append([]string{"-I"}, acceptArgs...)...); err != nil {
					return nil, fmt.Errorf("Unable to allow intercontainer communication: %s", err)
				} else if len(output) != 0 {
					return nil, fmt.Errorf("Error enabling intercontainer communication: %s", output)
				}
			}
		}

		// Accept all non-intercontainer outgoing packets
		outgoingArgs := []string{"FORWARD", "-i", config.BridgeIface, "!", "-o", config.BridgeIface, "-j", "ACCEPT"}

		if !iptables.Exists(outgoingArgs...) {
			if output, err := iptables.Raw(append([]string{"-I"}, outgoingArgs...)...); err != nil {
				return nil, fmt.Errorf("Unable to allow outgoing packets: %s", err)
			} else if len(output) != 0 {
				return nil, fmt.Errorf("Error iptables allow outgoing: %s", output)
			}
		}

		// Accept incoming packets for existing connections
		existingArgs := []string{"FORWARD", "-o", config.BridgeIface, "-m", "conntrack", "--ctstate", "RELATED,ESTABLISHED", "-j", "ACCEPT"}

		if !iptables.Exists(existingArgs...) {
			if output, err := iptables.Raw(append([]string{"-I"}, existingArgs...)...); err != nil {
				return nil, fmt.Errorf("Unable to allow incoming packets: %s", err)
			} else if len(output) != 0 {
				return nil, fmt.Errorf("Error iptables allow incoming: %s", output)
			}
		}

	}

	if config.EnableIpForward {
		// Enable IPv4 forwarding
		if err := ioutil.WriteFile("/proc/sys/net/ipv4/ip_forward", []byte{'1', '\n'}, 0644); err != nil {
			log.Printf("WARNING: unable to enable IPv4 forwarding: %s\n", err)
		}
	}

	// We can always try removing the iptables
	if err := iptables.RemoveExistingChain("DOCKER"); err != nil {
		return nil, err
	}

//.........這裏部分代碼省略.........

開發者ID:rollbar，項目名稱:docker，代碼行數:101，代碼來源:network.go

示例4: newNetworkManager

func newNetworkManager(config *DaemonConfig) (*NetworkManager, error) {
	if config.BridgeIface == DisableNetworkBridge {
		manager := &NetworkManager{
			disabled: true,
		}
		return manager, nil
	}

	addr, err := getIfaceAddr(config.BridgeIface)
	if err != nil {
		// If the iface is not found, try to create it
		if err := CreateBridgeIface(config); err != nil {
			return nil, err
		}
		addr, err = getIfaceAddr(config.BridgeIface)
		if err != nil {
			return nil, err
		}
	}
	network := addr.(*net.IPNet)

	// Configure iptables for link support
	if config.EnableIptables {

		// Enable NAT
		natArgs := []string{"POSTROUTING", "-t", "nat", "-s", addr.String(), "!", "-d", addr.String(), "-j", "MASQUERADE"}

		if !iptables.Exists(natArgs...) {
			if output, err := iptables.Raw(append([]string{"-A"}, natArgs...)...); err != nil {
				return nil, fmt.Errorf("Unable to enable network bridge NAT: %s", err)
			} else if len(output) != 0 {
				return nil, fmt.Errorf("Error iptables postrouting: %s", output)
			}
		}

		// Accept incoming packets for existing connections
		existingArgs := []string{"FORWARD", "-o", config.BridgeIface, "-m", "conntrack", "--ctstate", "RELATED,ESTABLISHED", "-j", "ACCEPT"}

		if !iptables.Exists(existingArgs...) {
			if output, err := iptables.Raw(append([]string{"-I"}, existingArgs...)...); err != nil {
				return nil, fmt.Errorf("Unable to allow incoming packets: %s", err)
			} else if len(output) != 0 {
				return nil, fmt.Errorf("Error iptables allow incoming: %s", output)
			}
		}

		// Accept all non-intercontainer outgoing packets
		outgoingArgs := []string{"FORWARD", "-i", config.BridgeIface, "!", "-o", config.BridgeIface, "-j", "ACCEPT"}

		if !iptables.Exists(outgoingArgs...) {
			if output, err := iptables.Raw(append([]string{"-I"}, outgoingArgs...)...); err != nil {
				return nil, fmt.Errorf("Unable to allow outgoing packets: %s", err)
			} else if len(output) != 0 {
				return nil, fmt.Errorf("Error iptables allow outgoing: %s", output)
			}
		}

		args := []string{"FORWARD", "-i", config.BridgeIface, "-o", config.BridgeIface, "-j"}
		acceptArgs := append(args, "ACCEPT")
		dropArgs := append(args, "DROP")

		if !config.InterContainerCommunication {
			iptables.Raw(append([]string{"-D"}, acceptArgs...)...)
			if !iptables.Exists(dropArgs...) {
				utils.Debugf("Disable inter-container communication")
				if output, err := iptables.Raw(append([]string{"-I"}, dropArgs...)...); err != nil {
					return nil, fmt.Errorf("Unable to prevent intercontainer communication: %s", err)
				} else if len(output) != 0 {
					return nil, fmt.Errorf("Error disabling intercontainer communication: %s", output)
				}
			}
		} else {
			iptables.Raw(append([]string{"-D"}, dropArgs...)...)
			if !iptables.Exists(acceptArgs...) {
				utils.Debugf("Enable inter-container communication")
				if output, err := iptables.Raw(append([]string{"-I"}, acceptArgs...)...); err != nil {
					return nil, fmt.Errorf("Unable to allow intercontainer communication: %s", err)
				} else if len(output) != 0 {
					return nil, fmt.Errorf("Error enabling intercontainer communication: %s", output)
				}
			}
		}
	}

	ipAllocator := newIPAllocator(network)

	tcpPortAllocator, err := newPortAllocator()
	if err != nil {
		return nil, err
	}

	udpPortAllocator, err := newPortAllocator()
	if err != nil {
		return nil, err
	}

	portMapper, err := newPortMapper(config)
	if err != nil {
		return nil, err
	}
//.........這裏部分代碼省略.........

開發者ID:Jeffliu，項目名稱:docker，代碼行數:101，代碼來源:network.go

注：本文中的github.com/dotcloud/docker/pkg/iptables.Exists函數示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。