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
}
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
}
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
}
_ = hostNetNS.Do(func(ns.NetNS) error {
defer GinkgoRecover()
_, err := netlink.LinkByName(hostVethName)
Expect(err).To(HaveOccurred())
return nil
})
})
It("DelLinkByNameAddr must throw an error for configured interfaces", func() {
_ = containerNetNS.Do(func(ns.NetNS) error {
defer GinkgoRecover()
// this will delete the host endpoint too
addr, err := ip.DelLinkByNameAddr(containerVethName, nl.FAMILY_V4)
Expect(err).To(HaveOccurred())
var ipNetNil *net.IPNet
Expect(addr).To(Equal(ipNetNil))
return nil
})
})
It("SetHWAddrByIP must change the interface hwaddr and be predictable", func() {
_ = containerNetNS.Do(func(ns.NetNS) error {
defer GinkgoRecover()
var err error
hwaddrBefore := getHwAddr(containerVethName)