73 lines
1.5 KiB
Go
73 lines
1.5 KiB
Go
package command
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import (
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"fmt"
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"github.com/hashicorp/consul/command/base"
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"strings"
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)
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// JoinCommand is a Command implementation that tells a running Consul
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// agent to join another.
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type JoinCommand struct {
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base.Command
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}
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func (c *JoinCommand) Help() string {
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helpText := `
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Usage: consul join [options] address ...
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Tells a running Consul agent (with "consul agent") to join the cluster
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by specifying at least one existing member.
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` + c.Command.Help()
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return strings.TrimSpace(helpText)
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}
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func (c *JoinCommand) Run(args []string) int {
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var wan bool
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f := c.Command.NewFlagSet(c)
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f.BoolVar(&wan, "wan", false, "Joins a server to another server in the WAN pool.")
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if err := c.Command.Parse(args); err != nil {
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return 1
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}
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addrs := f.Args()
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if len(addrs) == 0 {
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c.UI.Error("At least one address to join must be specified.")
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c.UI.Error("")
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c.UI.Error(c.Help())
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return 1
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}
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client, err := c.Command.HTTPClient()
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if err != nil {
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c.UI.Error(fmt.Sprintf("Error connecting to Consul agent: %s", err))
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return 1
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}
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joins := 0
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for _, addr := range addrs {
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err := client.Agent().Join(addr, wan)
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if err != nil {
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c.UI.Error(fmt.Sprintf("Error joining address '%s': %s", addr, err))
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} else {
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joins++
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}
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}
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if joins == 0 {
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c.UI.Error("Failed to join any nodes.")
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return 1
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}
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c.UI.Output(fmt.Sprintf(
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"Successfully joined cluster by contacting %d nodes.", joins))
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return 0
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}
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func (c *JoinCommand) Synopsis() string {
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return "Tell Consul agent to join cluster"
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}
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