func runJoin(dockerCli *client.DockerCli, opts joinOptions) error {
client := dockerCli.Client()
ctx := context.Background()
req := swarm.JoinRequest{
JoinToken: opts.token,
ListenAddr: opts.listenAddr.String(),
RemoteAddrs: []string{opts.remote},
}
err := client.SwarmJoin(ctx, req)
if err != nil {
return err
}
info, err := client.Info(ctx)
if err != nil {
return err
}
_, _, err = client.NodeInspectWithRaw(ctx, info.Swarm.NodeID)
if err != nil {
// TODO(aaronl): is there a better way to do this?
if strings.Contains(err.Error(), "This node is not a swarm manager.") {
fmt.Fprintln(dockerCli.Out(), "This node joined a swarm as a worker.")
}
} else {
fmt.Fprintln(dockerCli.Out(), "This node joined a swarm as a manager.")
}
return nil
}
func runInit(dockerCli *client.DockerCli, flags *pflag.FlagSet, opts initOptions) error {
client := dockerCli.Client()
ctx := context.Background()
// If no secret was specified, we create a random one
if !flags.Changed("secret") {
opts.secret = generateRandomSecret()
fmt.Fprintf(dockerCli.Out(), "No --secret provided. Generated random secret:\n\t%s\n\n", opts.secret)
}
req := swarm.InitRequest{
ListenAddr: opts.listenAddr.String(),
ForceNewCluster: opts.forceNewCluster,
Spec: opts.swarmOptions.ToSpec(),
}
nodeID, err := client.SwarmInit(ctx, req)
if err != nil {
return err
}
fmt.Fprintf(dockerCli.Out(), "Swarm initialized: current node (%s) is now a manager.\n\n", nodeID)
// Fetch CAHash and Address from the API
info, err := client.Info(ctx)
if err != nil {
return err
}
node, _, err := client.NodeInspectWithRaw(ctx, nodeID)
if err != nil {
return err
}
if node.ManagerStatus != nil && info.Swarm.CACertHash != "" {
var secretArgs string
if opts.secret != "" {
secretArgs = "--secret " + opts.secret
}
fmt.Fprintf(dockerCli.Out(), "To add a worker to this swarm, run the following command:\n\tdocker swarm join %s \\\n\t--ca-hash %s \\\n\t%s\n", secretArgs, info.Swarm.CACertHash, node.ManagerStatus.Addr)
}
return nil
}
func runList(dockerCli *client.DockerCli, opts listOptions) error {
client := dockerCli.Client()
ctx := context.Background()
nodes, err := client.NodeList(
ctx,
types.NodeListOptions{Filter: opts.filter.Value()})
if err != nil {
return err
}
info, err := client.Info(ctx)
if err != nil {
return err
}
out := dockerCli.Out()
if opts.quiet {
printQuiet(out, nodes)
} else {
printTable(out, nodes, info)
}
return nil
}
func newJoinTokenCommand(dockerCli *client.DockerCli) *cobra.Command {
var rotate, quiet bool
cmd := &cobra.Command{
Use: "join-token [OPTIONS] (worker|manager)",
Short: "Manage join tokens",
Args: cli.ExactArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
worker := args[0] == "worker"
manager := args[0] == "manager"
if !worker && !manager {
return errors.New("unknown role " + args[0])
}
client := dockerCli.Client()
ctx := context.Background()
if rotate {
var flags swarm.UpdateFlags
swarm, err := client.SwarmInspect(ctx)
if err != nil {
return err
}
flags.RotateWorkerToken = worker
flags.RotateManagerToken = manager
err = client.SwarmUpdate(ctx, swarm.Version, swarm.Spec, flags)
if err != nil {
return err
}
if !quiet {
fmt.Fprintf(dockerCli.Out(), "Succesfully rotated %s join token.\n\n", args[0])
}
}
swarm, err := client.SwarmInspect(ctx)
if err != nil {
return err
}
if quiet {
if worker {
fmt.Fprintln(dockerCli.Out(), swarm.JoinTokens.Worker)
} else {
fmt.Fprintln(dockerCli.Out(), swarm.JoinTokens.Manager)
}
} else {
info, err := client.Info(ctx)
if err != nil {
return err
}
return printJoinCommand(ctx, dockerCli, info.Swarm.NodeID, worker, manager)
}
return nil
},
}
flags := cmd.Flags()
flags.BoolVar(&rotate, flagRotate, false, "Rotate join token")
flags.BoolVarP(&quiet, flagQuiet, "q", false, "Only display token")
return cmd
}