mirror of https://github.com/docker/cli.git
82 lines
2.3 KiB
Go
82 lines
2.3 KiB
Go
package swarm
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import (
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"errors"
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"fmt"
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"strings"
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"golang.org/x/net/context"
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"github.com/docker/docker/api/types/swarm"
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"github.com/docker/docker/cli"
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"github.com/docker/docker/cli/command"
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"github.com/spf13/cobra"
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"github.com/spf13/pflag"
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)
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const (
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generatedSecretEntropyBytes = 16
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generatedSecretBase = 36
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// floor(log(2^128-1, 36)) + 1
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maxGeneratedSecretLength = 25
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)
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type initOptions struct {
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swarmOptions
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listenAddr NodeAddrOption
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// Not a NodeAddrOption because it has no default port.
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advertiseAddr string
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forceNewCluster bool
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}
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func newInitCommand(dockerCli *command.DockerCli) *cobra.Command {
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opts := initOptions{
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listenAddr: NewListenAddrOption(),
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}
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cmd := &cobra.Command{
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Use: "init [OPTIONS]",
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Short: "Initialize a swarm",
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Args: cli.NoArgs,
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RunE: func(cmd *cobra.Command, args []string) error {
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return runInit(dockerCli, cmd.Flags(), opts)
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},
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}
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flags := cmd.Flags()
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flags.Var(&opts.listenAddr, flagListenAddr, "Listen address (format: <ip|interface>[:port])")
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flags.StringVar(&opts.advertiseAddr, flagAdvertiseAddr, "", "Advertised address (format: <ip|interface>[:port])")
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flags.BoolVar(&opts.forceNewCluster, "force-new-cluster", false, "Force create a new cluster from current state.")
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addSwarmFlags(flags, &opts.swarmOptions)
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return cmd
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}
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func runInit(dockerCli *command.DockerCli, flags *pflag.FlagSet, opts initOptions) error {
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client := dockerCli.Client()
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ctx := context.Background()
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req := swarm.InitRequest{
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ListenAddr: opts.listenAddr.String(),
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AdvertiseAddr: opts.advertiseAddr,
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ForceNewCluster: opts.forceNewCluster,
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Spec: opts.swarmOptions.ToSpec(),
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}
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nodeID, err := client.SwarmInit(ctx, req)
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if err != nil {
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if strings.Contains(err.Error(), "could not choose an IP address to advertise") || strings.Contains(err.Error(), "could not find the system's IP address") {
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return errors.New(err.Error() + " - specify one with --advertise-addr")
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}
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return err
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}
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fmt.Fprintf(dockerCli.Out(), "Swarm initialized: current node (%s) is now a manager.\n\n", nodeID)
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if err := printJoinCommand(ctx, dockerCli, nodeID, true, false); err != nil {
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return err
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}
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fmt.Fprint(dockerCli.Out(), "To add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions.\n\n")
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return nil
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}
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