package command import ( "flag" "fmt" "github.com/mitchellh/cli" "strings" ) // ForceLeaveCommand is a Command implementation that tells a running Consul // to force a member to enter the "left" state. type ForceLeaveCommand struct { Ui cli.Ui } func (c *ForceLeaveCommand) Run(args []string) int { cmdFlags := flag.NewFlagSet("join", flag.ContinueOnError) cmdFlags.Usage = func() { c.Ui.Output(c.Help()) } rpcAddr := RPCAddrFlag(cmdFlags) if err := cmdFlags.Parse(args); err != nil { return 1 } nodes := cmdFlags.Args() if len(nodes) != 1 { c.Ui.Error("A node name must be specified to force leave.") c.Ui.Error("") c.Ui.Error(c.Help()) return 1 } client, err := RPCClient(*rpcAddr) if err != nil { c.Ui.Error(fmt.Sprintf("Error connecting to Consul agent: %s", err)) return 1 } defer client.Close() err = client.ForceLeave(nodes[0]) if err != nil { c.Ui.Error(fmt.Sprintf("Error force leaving: %s", err)) return 1 } return 0 } func (c *ForceLeaveCommand) Synopsis() string { return "Forces a member of the cluster to enter the \"left\" state" } func (c *ForceLeaveCommand) Help() string { helpText := ` Usage: consul force-leave [options] name Forces a member of a Consul cluster to enter the "left" state. Note that if the member is still actually alive, it will eventually rejoin the cluster. This command is most useful for cleaning out "failed" nodes that are never coming back. If you do not force leave a failed node, Consul will attempt to reconnect to those failed nodes for some period of time before eventually reaping them. Options: -rpc-addr=127.0.0.1:7373 RPC address of the Consul agent. ` return strings.TrimSpace(helpText) }