93 lines
1.8 KiB
Go
93 lines
1.8 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package join
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import (
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"flag"
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"fmt"
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"github.com/mitchellh/cli"
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"github.com/hashicorp/consul/command/flags"
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)
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func New(ui cli.Ui) *cmd {
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c := &cmd{UI: ui}
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c.init()
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return c
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}
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type cmd struct {
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UI cli.Ui
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flags *flag.FlagSet
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http *flags.HTTPFlags
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help string
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wan bool
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}
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func (c *cmd) init() {
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c.flags = flag.NewFlagSet("", flag.ContinueOnError)
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c.flags.BoolVar(&c.wan, "wan", false,
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"Joins a server to another server in the WAN pool.")
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c.http = &flags.HTTPFlags{}
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flags.Merge(c.flags, c.http.ClientFlags())
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flags.Merge(c.flags, c.http.PartitionFlag())
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c.help = flags.Usage(help, c.flags)
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}
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func (c *cmd) Run(args []string) int {
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if err := c.flags.Parse(args); err != nil {
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return 1
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}
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addrs := c.flags.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.http.APIClient()
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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, c.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("Successfully joined cluster by contacting %d nodes.", joins))
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return 0
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}
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func (c *cmd) Synopsis() string {
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return synopsis
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}
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func (c *cmd) Help() string {
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return c.help
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}
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const synopsis = "Tell Consul agent to join cluster"
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const help = `
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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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`
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