dhcp

Documentation

Index

• Variables
• type InterfaceMTUOption
  • func (io InterfaceMTUOption) IndentedString(prefix string) string
• type RoutersOption
  • func (ro RoutersOption) IndentedString(prefix string) string

Variables

var Cmd = &cobra.Command{
	Use:     "dhcp-sync",
	Short:   "dhcp-sync command",
	Long:    `dhcp-sync tool is a tool populating the dhcpd.conf file from the PowerVS network and restart the dhcpd service.`,
	GroupID: "dhcp",
	PreRunE: func(cmd *cobra.Command, args []string) error {
		if pkg.Options.WorkspaceID == "" {
			return fmt.Errorf("--workspace-id is required")
		}
		return nil
	},
	RunE: func(cmd *cobra.Command, args []string) error {
		go doEvery(2*time.Minute, syncDHCPD)

		watcher, err := fsnotify.NewWatcher()
		if err != nil {
			klog.Fatalf("cannot create a new fsNotify watcher: %v", err)
		}
		defer watcher.Close()

		done := make(chan bool)
		go func() {
			for {
				select {
				case event, ok := <-watcher.Events:
					if !ok {
						return
					}
					klog.V(2).Infof("received an fsWatcher event: %v", event)
					if event.Op&fsnotify.Write == fsnotify.Write {
						klog.V(2).Infof("%s has been modified, proceeding to restart dhcpd service", event.Name)
						exitcode, out, err := utils.RunCMD("systemctl", "restart", "dhcpd")
						if exitcode != 0 {
							klog.Errorf("failed to restart the dhcpd service, exitcode: %d, stdout: %s, err: %s", exitcode, out, err)
						}
					}
				case err, ok := <-watcher.Errors:
					if !ok {
						return
					}
					klog.Errorf("received an fsWatcher error: %v", err)
				}
			}
		}()

		err = watcher.Add(file)
		if err != nil {
			klog.Fatalf("cannot sync DHCP server: %v", err)
		}
		<-done
		return nil
	},
}

Types

type InterfaceMTUOption

type InterfaceMTUOption string

func (InterfaceMTUOption) IndentedString

func (io InterfaceMTUOption) IndentedString(prefix string) string

IndentedString implements the method of the same name in the Statement interface

type RoutersOption

type RoutersOption []net.IP

func (RoutersOption) IndentedString

func (ro RoutersOption) IndentedString(prefix string) string

IndentedString implements the method of the same name in the Statement interface