376 lines
13 KiB
Go
376 lines
13 KiB
Go
package system
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import (
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"fmt"
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"io"
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"sort"
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"strings"
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"github.com/docker/cli/cli"
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"github.com/docker/cli/cli/command"
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"github.com/docker/cli/cli/debug"
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"github.com/docker/cli/templates"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/api/types/swarm"
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"github.com/docker/go-units"
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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 infoOptions struct {
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format string
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}
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// NewInfoCommand creates a new cobra.Command for `docker info`
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func NewInfoCommand(dockerCli command.Cli) *cobra.Command {
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var opts infoOptions
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cmd := &cobra.Command{
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Use: "info [OPTIONS]",
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Short: "Display system-wide information",
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Args: cli.NoArgs,
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RunE: func(cmd *cobra.Command, args []string) error {
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return runInfo(dockerCli, &opts)
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},
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}
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flags := cmd.Flags()
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flags.StringVarP(&opts.format, "format", "f", "", "Format the output using the given Go template")
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return cmd
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}
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func runInfo(dockerCli command.Cli, opts *infoOptions) error {
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ctx := context.Background()
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info, err := dockerCli.Client().Info(ctx)
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if err != nil {
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return err
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}
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if opts.format == "" {
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return prettyPrintInfo(dockerCli, info)
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}
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return formatInfo(dockerCli, info, opts.format)
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}
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// nolint: gocyclo
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func prettyPrintInfo(dockerCli command.Cli, info types.Info) error {
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fmt.Fprintln(dockerCli.Out(), "Containers:", info.Containers)
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fmt.Fprintln(dockerCli.Out(), " Running:", info.ContainersRunning)
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fmt.Fprintln(dockerCli.Out(), " Paused:", info.ContainersPaused)
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fmt.Fprintln(dockerCli.Out(), " Stopped:", info.ContainersStopped)
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fmt.Fprintln(dockerCli.Out(), "Images:", info.Images)
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fprintlnNonEmpty(dockerCli.Out(), "Server Version:", info.ServerVersion)
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fprintlnNonEmpty(dockerCli.Out(), "Storage Driver:", info.Driver)
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if info.DriverStatus != nil {
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for _, pair := range info.DriverStatus {
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fmt.Fprintf(dockerCli.Out(), " %s: %s\n", pair[0], pair[1])
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}
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}
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if info.SystemStatus != nil {
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for _, pair := range info.SystemStatus {
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fmt.Fprintf(dockerCli.Out(), "%s: %s\n", pair[0], pair[1])
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}
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}
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fprintlnNonEmpty(dockerCli.Out(), "Logging Driver:", info.LoggingDriver)
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fprintlnNonEmpty(dockerCli.Out(), "Cgroup Driver:", info.CgroupDriver)
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fmt.Fprintln(dockerCli.Out(), "Plugins:")
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fmt.Fprintln(dockerCli.Out(), " Volume:", strings.Join(info.Plugins.Volume, " "))
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fmt.Fprintln(dockerCli.Out(), " Network:", strings.Join(info.Plugins.Network, " "))
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if len(info.Plugins.Authorization) != 0 {
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fmt.Fprintln(dockerCli.Out(), " Authorization:", strings.Join(info.Plugins.Authorization, " "))
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}
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fmt.Fprintln(dockerCli.Out(), " Log:", strings.Join(info.Plugins.Log, " "))
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fmt.Fprintln(dockerCli.Out(), "Swarm:", info.Swarm.LocalNodeState)
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printSwarmInfo(dockerCli, info)
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if len(info.Runtimes) > 0 {
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fmt.Fprint(dockerCli.Out(), "Runtimes:")
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for name := range info.Runtimes {
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fmt.Fprintf(dockerCli.Out(), " %s", name)
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}
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fmt.Fprint(dockerCli.Out(), "\n")
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fmt.Fprintln(dockerCli.Out(), "Default Runtime:", info.DefaultRuntime)
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}
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if info.OSType == "linux" {
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fmt.Fprintln(dockerCli.Out(), "Init Binary:", info.InitBinary)
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for _, ci := range []struct {
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Name string
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Commit types.Commit
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}{
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{"containerd", info.ContainerdCommit},
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{"runc", info.RuncCommit},
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{"init", info.InitCommit},
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} {
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fmt.Fprintf(dockerCli.Out(), "%s version: %s", ci.Name, ci.Commit.ID)
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if ci.Commit.ID != ci.Commit.Expected {
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fmt.Fprintf(dockerCli.Out(), " (expected: %s)", ci.Commit.Expected)
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}
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fmt.Fprint(dockerCli.Out(), "\n")
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}
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if len(info.SecurityOptions) != 0 {
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kvs, err := types.DecodeSecurityOptions(info.SecurityOptions)
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if err != nil {
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return err
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}
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fmt.Fprintln(dockerCli.Out(), "Security Options:")
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for _, so := range kvs {
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fmt.Fprintln(dockerCli.Out(), " "+so.Name)
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for _, o := range so.Options {
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switch o.Key {
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case "profile":
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if o.Value != "default" {
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fmt.Fprintln(dockerCli.Err(), " WARNING: You're not using the default seccomp profile")
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}
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fmt.Fprintln(dockerCli.Out(), " Profile:", o.Value)
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}
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}
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}
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}
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}
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// Isolation only has meaning on a Windows daemon.
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if info.OSType == "windows" {
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fmt.Fprintln(dockerCli.Out(), "Default Isolation:", info.Isolation)
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}
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fprintlnNonEmpty(dockerCli.Out(), "Kernel Version:", info.KernelVersion)
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fprintlnNonEmpty(dockerCli.Out(), "Operating System:", info.OperatingSystem)
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fprintlnNonEmpty(dockerCli.Out(), "OSType:", info.OSType)
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fprintlnNonEmpty(dockerCli.Out(), "Architecture:", info.Architecture)
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fmt.Fprintln(dockerCli.Out(), "CPUs:", info.NCPU)
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fmt.Fprintln(dockerCli.Out(), "Total Memory:", units.BytesSize(float64(info.MemTotal)))
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fprintlnNonEmpty(dockerCli.Out(), "Name:", info.Name)
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fprintlnNonEmpty(dockerCli.Out(), "ID:", info.ID)
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fmt.Fprintln(dockerCli.Out(), "Docker Root Dir:", info.DockerRootDir)
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fmt.Fprintln(dockerCli.Out(), "Debug Mode (client):", debug.IsEnabled())
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fmt.Fprintln(dockerCli.Out(), "Debug Mode (server):", info.Debug)
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if info.Debug {
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fmt.Fprintln(dockerCli.Out(), " File Descriptors:", info.NFd)
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fmt.Fprintln(dockerCli.Out(), " Goroutines:", info.NGoroutines)
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fmt.Fprintln(dockerCli.Out(), " System Time:", info.SystemTime)
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fmt.Fprintln(dockerCli.Out(), " EventsListeners:", info.NEventsListener)
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}
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fprintlnNonEmpty(dockerCli.Out(), "HTTP Proxy:", info.HTTPProxy)
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fprintlnNonEmpty(dockerCli.Out(), "HTTPS Proxy:", info.HTTPSProxy)
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fprintlnNonEmpty(dockerCli.Out(), "No Proxy:", info.NoProxy)
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if info.IndexServerAddress != "" {
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u := dockerCli.ConfigFile().AuthConfigs[info.IndexServerAddress].Username
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if len(u) > 0 {
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fmt.Fprintln(dockerCli.Out(), "Username:", u)
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}
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fmt.Fprintln(dockerCli.Out(), "Registry:", info.IndexServerAddress)
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}
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if info.Labels != nil {
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fmt.Fprintln(dockerCli.Out(), "Labels:")
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for _, lbl := range info.Labels {
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fmt.Fprintln(dockerCli.Out(), " "+lbl)
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}
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// TODO: Engine labels with duplicate keys has been deprecated in 1.13 and will be error out
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// after 3 release cycles (17.12). For now, a WARNING will be generated. The following will
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// be removed eventually.
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labelMap := map[string]string{}
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for _, label := range info.Labels {
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stringSlice := strings.SplitN(label, "=", 2)
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if len(stringSlice) > 1 {
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// If there is a conflict we will throw out a warning
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if v, ok := labelMap[stringSlice[0]]; ok && v != stringSlice[1] {
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fmt.Fprintln(dockerCli.Err(), "WARNING: labels with duplicate keys and conflicting values have been deprecated")
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break
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}
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labelMap[stringSlice[0]] = stringSlice[1]
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}
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}
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}
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fmt.Fprintln(dockerCli.Out(), "Experimental:", info.ExperimentalBuild)
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fprintlnNonEmpty(dockerCli.Out(), "Cluster Store:", info.ClusterStore)
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fprintlnNonEmpty(dockerCli.Out(), "Cluster Advertise:", info.ClusterAdvertise)
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if info.RegistryConfig != nil && (len(info.RegistryConfig.InsecureRegistryCIDRs) > 0 || len(info.RegistryConfig.IndexConfigs) > 0) {
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fmt.Fprintln(dockerCli.Out(), "Insecure Registries:")
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for _, registry := range info.RegistryConfig.IndexConfigs {
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if !registry.Secure {
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fmt.Fprintln(dockerCli.Out(), " "+registry.Name)
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}
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}
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for _, registry := range info.RegistryConfig.InsecureRegistryCIDRs {
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mask, _ := registry.Mask.Size()
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fmt.Fprintf(dockerCli.Out(), " %s/%d\n", registry.IP.String(), mask)
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}
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}
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if info.RegistryConfig != nil && len(info.RegistryConfig.Mirrors) > 0 {
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fmt.Fprintln(dockerCli.Out(), "Registry Mirrors:")
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for _, mirror := range info.RegistryConfig.Mirrors {
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fmt.Fprintln(dockerCli.Out(), " "+mirror)
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}
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}
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fmt.Fprintln(dockerCli.Out(), "Live Restore Enabled:", info.LiveRestoreEnabled)
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fmt.Fprint(dockerCli.Out(), "\n")
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// Only output these warnings if the server does not support these features
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if info.OSType != "windows" {
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printStorageDriverWarnings(dockerCli, info)
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if !info.MemoryLimit {
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fmt.Fprintln(dockerCli.Err(), "WARNING: No memory limit support")
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}
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if !info.SwapLimit {
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fmt.Fprintln(dockerCli.Err(), "WARNING: No swap limit support")
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}
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if !info.KernelMemory {
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fmt.Fprintln(dockerCli.Err(), "WARNING: No kernel memory limit support")
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}
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if !info.OomKillDisable {
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fmt.Fprintln(dockerCli.Err(), "WARNING: No oom kill disable support")
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}
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if !info.CPUCfsQuota {
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fmt.Fprintln(dockerCli.Err(), "WARNING: No cpu cfs quota support")
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}
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if !info.CPUCfsPeriod {
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fmt.Fprintln(dockerCli.Err(), "WARNING: No cpu cfs period support")
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}
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if !info.CPUShares {
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fmt.Fprintln(dockerCli.Err(), "WARNING: No cpu shares support")
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}
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if !info.CPUSet {
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fmt.Fprintln(dockerCli.Err(), "WARNING: No cpuset support")
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}
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if !info.IPv4Forwarding {
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fmt.Fprintln(dockerCli.Err(), "WARNING: IPv4 forwarding is disabled")
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}
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if !info.BridgeNfIptables {
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fmt.Fprintln(dockerCli.Err(), "WARNING: bridge-nf-call-iptables is disabled")
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}
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if !info.BridgeNfIP6tables {
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fmt.Fprintln(dockerCli.Err(), "WARNING: bridge-nf-call-ip6tables is disabled")
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}
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}
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return nil
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}
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func printSwarmInfo(dockerCli command.Cli, info types.Info) {
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if info.Swarm.LocalNodeState == swarm.LocalNodeStateInactive || info.Swarm.LocalNodeState == swarm.LocalNodeStateLocked {
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return
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}
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fmt.Fprintln(dockerCli.Out(), " NodeID:", info.Swarm.NodeID)
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if info.Swarm.Error != "" {
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fmt.Fprintln(dockerCli.Out(), " Error:", info.Swarm.Error)
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}
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fmt.Fprintln(dockerCli.Out(), " Is Manager:", info.Swarm.ControlAvailable)
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if info.Swarm.Cluster != nil && info.Swarm.ControlAvailable && info.Swarm.Error == "" && info.Swarm.LocalNodeState != swarm.LocalNodeStateError {
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fmt.Fprintln(dockerCli.Out(), " ClusterID:", info.Swarm.Cluster.ID)
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fmt.Fprintln(dockerCli.Out(), " Managers:", info.Swarm.Managers)
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fmt.Fprintln(dockerCli.Out(), " Nodes:", info.Swarm.Nodes)
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fmt.Fprintln(dockerCli.Out(), " Orchestration:")
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taskHistoryRetentionLimit := int64(0)
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if info.Swarm.Cluster.Spec.Orchestration.TaskHistoryRetentionLimit != nil {
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taskHistoryRetentionLimit = *info.Swarm.Cluster.Spec.Orchestration.TaskHistoryRetentionLimit
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}
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fmt.Fprintln(dockerCli.Out(), " Task History Retention Limit:", taskHistoryRetentionLimit)
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fmt.Fprintln(dockerCli.Out(), " Raft:")
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fmt.Fprintln(dockerCli.Out(), " Snapshot Interval:", info.Swarm.Cluster.Spec.Raft.SnapshotInterval)
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if info.Swarm.Cluster.Spec.Raft.KeepOldSnapshots != nil {
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fmt.Fprintf(dockerCli.Out(), " Number of Old Snapshots to Retain: %d\n", *info.Swarm.Cluster.Spec.Raft.KeepOldSnapshots)
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}
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fmt.Fprintln(dockerCli.Out(), " Heartbeat Tick:", info.Swarm.Cluster.Spec.Raft.HeartbeatTick)
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fmt.Fprintln(dockerCli.Out(), " Election Tick:", info.Swarm.Cluster.Spec.Raft.ElectionTick)
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fmt.Fprintln(dockerCli.Out(), " Dispatcher:")
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fmt.Fprintln(dockerCli.Out(), " Heartbeat Period:", units.HumanDuration(info.Swarm.Cluster.Spec.Dispatcher.HeartbeatPeriod))
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fmt.Fprintln(dockerCli.Out(), " CA Configuration:")
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fmt.Fprintln(dockerCli.Out(), " Expiry Duration:", units.HumanDuration(info.Swarm.Cluster.Spec.CAConfig.NodeCertExpiry))
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fmt.Fprintln(dockerCli.Out(), " Force Rotate:", info.Swarm.Cluster.Spec.CAConfig.ForceRotate)
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if caCert := strings.TrimSpace(info.Swarm.Cluster.Spec.CAConfig.SigningCACert); caCert != "" {
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fmt.Fprintf(dockerCli.Out(), " Signing CA Certificate: \n%s\n\n", caCert)
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}
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if len(info.Swarm.Cluster.Spec.CAConfig.ExternalCAs) > 0 {
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fmt.Fprintln(dockerCli.Out(), " External CAs:")
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for _, entry := range info.Swarm.Cluster.Spec.CAConfig.ExternalCAs {
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fmt.Fprintf(dockerCli.Out(), " %s: %s\n", entry.Protocol, entry.URL)
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}
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}
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fmt.Fprintln(dockerCli.Out(), " Autolock Managers:", info.Swarm.Cluster.Spec.EncryptionConfig.AutoLockManagers)
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fmt.Fprintln(dockerCli.Out(), " Root Rotation In Progress:", info.Swarm.Cluster.RootRotationInProgress)
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}
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fmt.Fprintln(dockerCli.Out(), " Node Address:", info.Swarm.NodeAddr)
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if len(info.Swarm.RemoteManagers) > 0 {
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managers := []string{}
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for _, entry := range info.Swarm.RemoteManagers {
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managers = append(managers, entry.Addr)
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}
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sort.Strings(managers)
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fmt.Fprintln(dockerCli.Out(), " Manager Addresses:")
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for _, entry := range managers {
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fmt.Fprintf(dockerCli.Out(), " %s\n", entry)
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}
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}
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}
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func printStorageDriverWarnings(dockerCli command.Cli, info types.Info) {
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if info.DriverStatus == nil {
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return
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}
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for _, pair := range info.DriverStatus {
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if pair[0] == "Data loop file" {
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fmt.Fprintf(dockerCli.Err(), "WARNING: %s: usage of loopback devices is "+
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"strongly discouraged for production use.\n "+
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"Use `--storage-opt dm.thinpooldev` to specify a custom block storage device.\n", info.Driver)
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}
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if pair[0] == "Supports d_type" && pair[1] == "false" {
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backingFs := getBackingFs(info)
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msg := fmt.Sprintf("WARNING: %s: the backing %s filesystem is formatted without d_type support, which leads to incorrect behavior.\n", info.Driver, backingFs)
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if backingFs == "xfs" {
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msg += " Reformat the filesystem with ftype=1 to enable d_type support.\n"
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}
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msg += " Running without d_type support will not be supported in future releases."
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fmt.Fprintln(dockerCli.Err(), msg)
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}
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}
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}
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func getBackingFs(info types.Info) string {
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if info.DriverStatus == nil {
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return ""
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}
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for _, pair := range info.DriverStatus {
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if pair[0] == "Backing Filesystem" {
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return pair[1]
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}
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}
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return ""
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}
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func formatInfo(dockerCli command.Cli, info types.Info, format string) error {
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tmpl, err := templates.Parse(format)
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if err != nil {
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return cli.StatusError{StatusCode: 64,
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Status: "Template parsing error: " + err.Error()}
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}
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err = tmpl.Execute(dockerCli.Out(), info)
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dockerCli.Out().Write([]byte{'\n'})
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return err
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}
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func fprintlnNonEmpty(w io.Writer, label, value string) {
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if value != "" {
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fmt.Fprintln(w, label, value)
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}
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}
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