func runUpdate(dockerCli *client.DockerCli, flags *pflag.FlagSet, opts swarmOptions) error {
client := dockerCli.Client()
ctx := context.Background()
var updateFlags swarm.UpdateFlags
swarm, err := client.SwarmInspect(ctx)
if err != nil {
return err
}
err = mergeSwarm(&swarm, flags)
if err != nil {
return err
}
err = client.SwarmUpdate(ctx, swarm.Version, swarm.Spec, updateFlags)
if err != nil {
return err
}
fmt.Fprintln(dockerCli.Out(), "Swarm updated.")
return nil
}
func printJoinCommand(ctx context.Context, dockerCli *client.DockerCli, nodeID string, worker bool, manager bool) error {
client := dockerCli.Client()
swarm, err := client.SwarmInspect(ctx)
if err != nil {
return err
}
node, _, err := client.NodeInspectWithRaw(ctx, nodeID)
if err != nil {
return err
}
if node.ManagerStatus != nil {
if worker {
fmt.Fprintf(dockerCli.Out(), "To add a worker to this swarm, run the following command:\n docker swarm join \\\n --token %s \\\n %s\n", swarm.JoinTokens.Worker, node.ManagerStatus.Addr)
}
if manager {
if worker {
fmt.Fprintln(dockerCli.Out())
}
fmt.Fprintf(dockerCli.Out(), "To add a manager to this swarm, run the following command:\n docker swarm join \\\n --token %s \\\n %s\n", swarm.JoinTokens.Manager, node.ManagerStatus.Addr)
}
}
return nil
}
func runInspect(dockerCli *client.DockerCli, opts inspectOptions) error {
client := dockerCli.Client()
ctx := context.Background()
swarm, err := client.SwarmInspect(ctx)
if err != nil {
return err
}
getRef := func(_ string) (interface{}, []byte, error) {
return swarm, nil, nil
}
return inspect.Inspect(dockerCli.Out(), []string{""}, opts.format, getRef)
}
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
}