Ejemplo n.º 1
0
func cmdDel(args *skel.CmdArgs) error {
	n, err := loadNetConf(args.StdinData)
	if err != nil {
		return err
	}

	if err := ipam.ExecDel(n.IPAM.Type, args.StdinData); err != nil {
		return err
	}

	var ipn *net.IPNet
	err = ns.WithNetNSPath(args.Netns, false, func(hostNS *os.File) error {
		var err error
		ipn, err = ip.DelLinkByNameAddr(args.IfName, netlink.FAMILY_V4)
		return err
	})
	if err != nil {
		return err
	}

	if n.IPMasq {
		chain := utils.FormatChainName(n.Name, args.ContainerID)
		comment := utils.FormatComment(n.Name, args.ContainerID)
		if err = ip.TeardownIPMasq(ipn, chain, comment); err != nil {
			return err
		}
	}

	return nil
}
Ejemplo n.º 2
0
Archivo: ptp.go Proyecto: tomdee/cni
func cmdDel(args *skel.CmdArgs) error {
	conf := NetConf{}
	if err := json.Unmarshal(args.StdinData, &conf); err != nil {
		return fmt.Errorf("failed to load netconf: %v", err)
	}

	if err := ipam.ExecDel(conf.IPAM.Type, args.StdinData); err != nil {
		return err
	}

	if args.Netns == "" {
		return nil
	}

	var ipn *net.IPNet
	err := ns.WithNetNSPath(args.Netns, func(_ ns.NetNS) error {
		var err error
		ipn, err = ip.DelLinkByNameAddr(args.IfName, netlink.FAMILY_V4)
		return err
	})
	if err != nil {
		return err
	}

	if conf.IPMasq {
		chain := utils.FormatChainName(conf.Name, args.ContainerID)
		comment := utils.FormatComment(conf.Name, args.ContainerID)
		if err = ip.TeardownIPMasq(ipn, chain, comment); err != nil {
			return err
		}
	}

	return nil
}
Ejemplo n.º 3
0
func cmdDel(args *skel.CmdArgs) error {
	n, err := loadConf(args.StdinData)
	if err != nil {
		return err
	}

	err = ipam.ExecDel(n.IPAM.Type, args.StdinData)
	if err != nil {
		return err
	}

	return ns.WithNetNSPath(args.Netns, false, func(hostNS *os.File) error {
		return ip.DelLinkByName(args.IfName)
	})
}
Ejemplo n.º 4
0
func cmdDel(args *skel.CmdArgs) error {
	n, err := loadConf(args.StdinData)
	if err != nil {
		return err
	}

	err = ipam.ExecDel(n.IPAM.Type, args.StdinData)
	if err != nil {
		return err
	}

	if args.Netns == "" {
		return nil
	}

	return ns.WithNetNSPath(args.Netns, func(_ ns.NetNS) error {
		return ip.DelLinkByName(args.IfName)
	})
}
Ejemplo n.º 5
0
func cmdDel(args *skel.CmdArgs) error {
	conf := NetConf{}
	if err := json.Unmarshal(args.StdinData, &conf); err != nil {
		return fmt.Errorf("failed to load netconf: %v", err)
	}

	ConfigureLogging(conf.LogLevel)

	workload, orchestrator, err := GetIdentifiers(args)
	if err != nil {
		return err
	}

	logger := CreateContextLogger(workload)

	// Allow the hostname to be overridden by the network config
	if conf.Hostname != "" {
		hostname = conf.Hostname
	}

	logger.WithFields(log.Fields{
		"Workload":     workload,
		"Orchestrator": orchestrator,
		"Node":         hostname,
	}).Info("Extracted identifiers")

	// Always try to release the address. Don't deal with any errors till the endpoints are cleaned up.
	fmt.Fprintf(os.Stderr, "Calico CNI releasing IP address\n")
	logger.WithFields(log.Fields{"paths": os.Getenv("CNI_PATH"),
		"type": conf.IPAM.Type}).Debug("Looking for IPAM plugin in paths")
	ipamErr := ipam.ExecDel(conf.IPAM.Type, args.StdinData)

	if ipamErr != nil {
		logger.Error(ipamErr)
	}

	calicoClient, err := CreateClient(conf)
	if err != nil {
		return err
	}

	if err := calicoClient.WorkloadEndpoints().Delete(api.WorkloadEndpointMetadata{
		Name:         args.IfName,
		Node:         hostname,
		Orchestrator: orchestrator,
		Workload:     workload}); err != nil {
		return err
	}

	// Only try to delete the device if a namespace was passed in.
	if args.Netns != "" {
		fmt.Fprintf(os.Stderr, "Calico CNI deleting device in netns %s\n", args.Netns)
		err = ns.WithNetNSPath(args.Netns, func(_ ns.NetNS) error {
			_, err = ip.DelLinkByNameAddr(args.IfName, netlink.FAMILY_V4)
			return err
		})

		if err != nil {
			return err
		}
	}

	// Return the IPAM error if there was one. The IPAM error will be lost if there was also an error in cleaning up
	// the device or endpoint, but crucially, the user will know the overall operation failed.
	return ipamErr
}