87 lines
2.1 KiB
Go
87 lines
2.1 KiB
Go
package swarm
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import (
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"fmt"
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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/pkg/errors"
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"github.com/spf13/cobra"
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"golang.org/x/net/context"
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)
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type unlockKeyOptions struct {
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rotate bool
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quiet bool
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}
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func newUnlockKeyCommand(dockerCli command.Cli) *cobra.Command {
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opts := unlockKeyOptions{}
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cmd := &cobra.Command{
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Use: "unlock-key [OPTIONS]",
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Short: "Manage the unlock key",
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Args: cli.NoArgs,
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RunE: func(cmd *cobra.Command, args []string) error {
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return runUnlockKey(dockerCli, opts)
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},
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}
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flags := cmd.Flags()
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flags.BoolVar(&opts.rotate, flagRotate, false, "Rotate unlock key")
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flags.BoolVarP(&opts.quiet, flagQuiet, "q", false, "Only display token")
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return cmd
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}
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func runUnlockKey(dockerCli command.Cli, opts unlockKeyOptions) error {
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client := dockerCli.Client()
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ctx := context.Background()
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if opts.rotate {
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flags := swarm.UpdateFlags{RotateManagerUnlockKey: true}
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sw, err := client.SwarmInspect(ctx)
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if err != nil {
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return err
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}
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if !sw.Spec.EncryptionConfig.AutoLockManagers {
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return errors.New("cannot rotate because autolock is not turned on")
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}
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if err := client.SwarmUpdate(ctx, sw.Version, sw.Spec, flags); err != nil {
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return err
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}
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if !opts.quiet {
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fmt.Fprintf(dockerCli.Out(), "Successfully rotated manager unlock key.\n\n")
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}
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}
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unlockKeyResp, err := client.SwarmGetUnlockKey(ctx)
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if err != nil {
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return errors.Wrap(err, "could not fetch unlock key")
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}
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if unlockKeyResp.UnlockKey == "" {
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return errors.New("no unlock key is set")
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}
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if opts.quiet {
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fmt.Fprintln(dockerCli.Out(), unlockKeyResp.UnlockKey)
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return nil
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}
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printUnlockCommand(ctx, dockerCli, unlockKeyResp.UnlockKey)
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return nil
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}
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func printUnlockCommand(ctx context.Context, dockerCli command.Cli, unlockKey string) {
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if len(unlockKey) > 0 {
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fmt.Fprintf(dockerCli.Out(), "To unlock a swarm manager after it restarts, run the `docker swarm unlock`\ncommand and provide the following key:\n\n %s\n\nPlease remember to store this key in a password manager, since without it you\nwill not be able to restart the manager.\n", unlockKey)
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}
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return
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}
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