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6de8fcb2f2
Using tabs here seems to cause copy/paste problems in some terminals. Using spaces is safer. Fixes #24609 Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
95 lines
2.4 KiB
Go
95 lines
2.4 KiB
Go
package swarm
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import (
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"fmt"
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"golang.org/x/net/context"
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"github.com/docker/docker/api/client"
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"github.com/docker/docker/cli"
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"github.com/docker/engine-api/types/swarm"
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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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forceNewCluster bool
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}
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func newInitCommand(dockerCli *client.DockerCli) *cobra.Command {
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opts := initOptions{
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listenAddr: NewListenAddrOption(),
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swarmOptions: swarmOptions{
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autoAccept: NewAutoAcceptOption(),
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},
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}
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cmd := &cobra.Command{
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Use: "init",
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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, "listen-addr", "Listen address")
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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 *client.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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// If no secret was specified, we create a random one
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if !flags.Changed("secret") {
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opts.secret = generateRandomSecret()
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fmt.Fprintf(dockerCli.Out(), "No --secret provided. Generated random secret:\n %s\n\n", opts.secret)
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}
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req := swarm.InitRequest{
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ListenAddr: opts.listenAddr.String(),
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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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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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// Fetch CAHash and Address from the API
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info, err := client.Info(ctx)
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if err != nil {
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return err
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}
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node, _, err := client.NodeInspectWithRaw(ctx, nodeID)
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if err != nil {
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return err
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}
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if node.ManagerStatus != nil && info.Swarm.CACertHash != "" {
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var secretArgs string
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if opts.secret != "" {
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secretArgs = "--secret " + opts.secret
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}
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fmt.Fprintf(dockerCli.Out(), "To add a worker to this swarm, run the following command:\n docker swarm join %s \\\n --ca-hash %s \\\n %s\n", secretArgs, info.Swarm.CACertHash, node.ManagerStatus.Addr)
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}
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return nil
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}
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