| package system |
| |
| import ( |
| "fmt" |
| "strings" |
| "time" |
| |
| "golang.org/x/net/context" |
| |
| "github.com/docker/docker/api/types" |
| "github.com/docker/docker/api/types/swarm" |
| "github.com/docker/docker/cli" |
| "github.com/docker/docker/cli/command" |
| "github.com/docker/docker/pkg/ioutils" |
| "github.com/docker/docker/utils" |
| "github.com/docker/docker/utils/templates" |
| "github.com/docker/go-units" |
| "github.com/spf13/cobra" |
| ) |
| |
| type infoOptions struct { |
| format string |
| } |
| |
| // NewInfoCommand creates a new cobra.Command for `docker info` |
| func NewInfoCommand(dockerCli *command.DockerCli) *cobra.Command { |
| var opts infoOptions |
| |
| cmd := &cobra.Command{ |
| Use: "info [OPTIONS]", |
| Short: "Display system-wide information", |
| Args: cli.NoArgs, |
| RunE: func(cmd *cobra.Command, args []string) error { |
| return runInfo(dockerCli, &opts) |
| }, |
| } |
| |
| flags := cmd.Flags() |
| |
| flags.StringVarP(&opts.format, "format", "f", "", "Format the output using the given Go template") |
| |
| return cmd |
| } |
| |
| func runInfo(dockerCli *command.DockerCli, opts *infoOptions) error { |
| ctx := context.Background() |
| info, err := dockerCli.Client().Info(ctx) |
| if err != nil { |
| return err |
| } |
| if opts.format == "" { |
| return prettyPrintInfo(dockerCli, info) |
| } |
| return formatInfo(dockerCli, info, opts.format) |
| } |
| |
| func prettyPrintInfo(dockerCli *command.DockerCli, info types.Info) error { |
| fmt.Fprintf(dockerCli.Out(), "Containers: %d\n", info.Containers) |
| fmt.Fprintf(dockerCli.Out(), " Running: %d\n", info.ContainersRunning) |
| fmt.Fprintf(dockerCli.Out(), " Paused: %d\n", info.ContainersPaused) |
| fmt.Fprintf(dockerCli.Out(), " Stopped: %d\n", info.ContainersStopped) |
| fmt.Fprintf(dockerCli.Out(), "Images: %d\n", info.Images) |
| ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Server Version: %s\n", info.ServerVersion) |
| ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Storage Driver: %s\n", info.Driver) |
| if info.DriverStatus != nil { |
| for _, pair := range info.DriverStatus { |
| fmt.Fprintf(dockerCli.Out(), " %s: %s\n", pair[0], pair[1]) |
| |
| // print a warning if devicemapper is using a loopback file |
| if pair[0] == "Data loop file" { |
| fmt.Fprintln(dockerCli.Err(), " WARNING: Usage of loopback devices is strongly discouraged for production use. Use `--storage-opt dm.thinpooldev` to specify a custom block storage device.") |
| } |
| } |
| |
| } |
| if info.SystemStatus != nil { |
| for _, pair := range info.SystemStatus { |
| fmt.Fprintf(dockerCli.Out(), "%s: %s\n", pair[0], pair[1]) |
| } |
| } |
| ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Logging Driver: %s\n", info.LoggingDriver) |
| ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Cgroup Driver: %s\n", info.CgroupDriver) |
| |
| fmt.Fprintf(dockerCli.Out(), "Plugins: \n") |
| fmt.Fprintf(dockerCli.Out(), " Volume:") |
| fmt.Fprintf(dockerCli.Out(), " %s", strings.Join(info.Plugins.Volume, " ")) |
| fmt.Fprintf(dockerCli.Out(), "\n") |
| fmt.Fprintf(dockerCli.Out(), " Network:") |
| fmt.Fprintf(dockerCli.Out(), " %s", strings.Join(info.Plugins.Network, " ")) |
| fmt.Fprintf(dockerCli.Out(), "\n") |
| |
| if len(info.Plugins.Authorization) != 0 { |
| fmt.Fprintf(dockerCli.Out(), " Authorization:") |
| fmt.Fprintf(dockerCli.Out(), " %s", strings.Join(info.Plugins.Authorization, " ")) |
| fmt.Fprintf(dockerCli.Out(), "\n") |
| } |
| |
| fmt.Fprintf(dockerCli.Out(), "Swarm: %v\n", info.Swarm.LocalNodeState) |
| if info.Swarm.LocalNodeState != swarm.LocalNodeStateInactive && info.Swarm.LocalNodeState != swarm.LocalNodeStateLocked { |
| fmt.Fprintf(dockerCli.Out(), " NodeID: %s\n", info.Swarm.NodeID) |
| if info.Swarm.Error != "" { |
| fmt.Fprintf(dockerCli.Out(), " Error: %v\n", info.Swarm.Error) |
| } |
| fmt.Fprintf(dockerCli.Out(), " Is Manager: %v\n", info.Swarm.ControlAvailable) |
| if info.Swarm.ControlAvailable { |
| fmt.Fprintf(dockerCli.Out(), " ClusterID: %s\n", info.Swarm.Cluster.ID) |
| fmt.Fprintf(dockerCli.Out(), " Managers: %d\n", info.Swarm.Managers) |
| fmt.Fprintf(dockerCli.Out(), " Nodes: %d\n", info.Swarm.Nodes) |
| fmt.Fprintf(dockerCli.Out(), " Orchestration:\n") |
| taskHistoryRetentionLimit := int64(0) |
| if info.Swarm.Cluster.Spec.Orchestration.TaskHistoryRetentionLimit != nil { |
| taskHistoryRetentionLimit = *info.Swarm.Cluster.Spec.Orchestration.TaskHistoryRetentionLimit |
| } |
| fmt.Fprintf(dockerCli.Out(), " Task History Retention Limit: %d\n", taskHistoryRetentionLimit) |
| fmt.Fprintf(dockerCli.Out(), " Raft:\n") |
| fmt.Fprintf(dockerCli.Out(), " Snapshot Interval: %d\n", info.Swarm.Cluster.Spec.Raft.SnapshotInterval) |
| if info.Swarm.Cluster.Spec.Raft.KeepOldSnapshots != nil { |
| fmt.Fprintf(dockerCli.Out(), " Number of Old Snapshots to Retain: %d\n", *info.Swarm.Cluster.Spec.Raft.KeepOldSnapshots) |
| } |
| fmt.Fprintf(dockerCli.Out(), " Heartbeat Tick: %d\n", info.Swarm.Cluster.Spec.Raft.HeartbeatTick) |
| fmt.Fprintf(dockerCli.Out(), " Election Tick: %d\n", info.Swarm.Cluster.Spec.Raft.ElectionTick) |
| fmt.Fprintf(dockerCli.Out(), " Dispatcher:\n") |
| fmt.Fprintf(dockerCli.Out(), " Heartbeat Period: %s\n", units.HumanDuration(time.Duration(info.Swarm.Cluster.Spec.Dispatcher.HeartbeatPeriod))) |
| fmt.Fprintf(dockerCli.Out(), " CA Configuration:\n") |
| fmt.Fprintf(dockerCli.Out(), " Expiry Duration: %s\n", units.HumanDuration(info.Swarm.Cluster.Spec.CAConfig.NodeCertExpiry)) |
| if len(info.Swarm.Cluster.Spec.CAConfig.ExternalCAs) > 0 { |
| fmt.Fprintf(dockerCli.Out(), " External CAs:\n") |
| for _, entry := range info.Swarm.Cluster.Spec.CAConfig.ExternalCAs { |
| fmt.Fprintf(dockerCli.Out(), " %s: %s\n", entry.Protocol, entry.URL) |
| } |
| } |
| } |
| fmt.Fprintf(dockerCli.Out(), " Node Address: %s\n", info.Swarm.NodeAddr) |
| } |
| |
| if len(info.Runtimes) > 0 { |
| fmt.Fprintf(dockerCli.Out(), "Runtimes:") |
| for name := range info.Runtimes { |
| fmt.Fprintf(dockerCli.Out(), " %s", name) |
| } |
| fmt.Fprint(dockerCli.Out(), "\n") |
| fmt.Fprintf(dockerCli.Out(), "Default Runtime: %s\n", info.DefaultRuntime) |
| } |
| |
| if info.OSType == "linux" { |
| if len(info.SecurityOptions) != 0 { |
| fmt.Fprintf(dockerCli.Out(), "Security Options:\n") |
| for _, o := range info.SecurityOptions { |
| switch o.Key { |
| case "Name": |
| fmt.Fprintf(dockerCli.Out(), " %s\n", o.Value) |
| case "Profile": |
| if o.Value != "default" { |
| fmt.Fprintf(dockerCli.Err(), " WARNING: You're not using the default seccomp profile\n") |
| } |
| fmt.Fprintf(dockerCli.Out(), " %s: %s\n", o.Key, o.Value) |
| } |
| } |
| } |
| } |
| |
| // Isolation only has meaning on a Windows daemon. |
| if info.OSType == "windows" { |
| fmt.Fprintf(dockerCli.Out(), "Default Isolation: %v\n", info.Isolation) |
| } |
| |
| ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Kernel Version: %s\n", info.KernelVersion) |
| ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Operating System: %s\n", info.OperatingSystem) |
| ioutils.FprintfIfNotEmpty(dockerCli.Out(), "OSType: %s\n", info.OSType) |
| ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Architecture: %s\n", info.Architecture) |
| fmt.Fprintf(dockerCli.Out(), "CPUs: %d\n", info.NCPU) |
| fmt.Fprintf(dockerCli.Out(), "Total Memory: %s\n", units.BytesSize(float64(info.MemTotal))) |
| ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Name: %s\n", info.Name) |
| ioutils.FprintfIfNotEmpty(dockerCli.Out(), "ID: %s\n", info.ID) |
| fmt.Fprintf(dockerCli.Out(), "Docker Root Dir: %s\n", info.DockerRootDir) |
| fmt.Fprintf(dockerCli.Out(), "Debug Mode (client): %v\n", utils.IsDebugEnabled()) |
| fmt.Fprintf(dockerCli.Out(), "Debug Mode (server): %v\n", info.Debug) |
| |
| if info.Debug { |
| fmt.Fprintf(dockerCli.Out(), " File Descriptors: %d\n", info.NFd) |
| fmt.Fprintf(dockerCli.Out(), " Goroutines: %d\n", info.NGoroutines) |
| fmt.Fprintf(dockerCli.Out(), " System Time: %s\n", info.SystemTime) |
| fmt.Fprintf(dockerCli.Out(), " EventsListeners: %d\n", info.NEventsListener) |
| } |
| |
| ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Http Proxy: %s\n", info.HTTPProxy) |
| ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Https Proxy: %s\n", info.HTTPSProxy) |
| ioutils.FprintfIfNotEmpty(dockerCli.Out(), "No Proxy: %s\n", info.NoProxy) |
| |
| if info.IndexServerAddress != "" { |
| u := dockerCli.ConfigFile().AuthConfigs[info.IndexServerAddress].Username |
| if len(u) > 0 { |
| fmt.Fprintf(dockerCli.Out(), "Username: %v\n", u) |
| } |
| fmt.Fprintf(dockerCli.Out(), "Registry: %v\n", info.IndexServerAddress) |
| } |
| |
| // Only output these warnings if the server does not support these features |
| if info.OSType != "windows" { |
| if !info.MemoryLimit { |
| fmt.Fprintln(dockerCli.Err(), "WARNING: No memory limit support") |
| } |
| if !info.SwapLimit { |
| fmt.Fprintln(dockerCli.Err(), "WARNING: No swap limit support") |
| } |
| if !info.KernelMemory { |
| fmt.Fprintln(dockerCli.Err(), "WARNING: No kernel memory limit support") |
| } |
| if !info.OomKillDisable { |
| fmt.Fprintln(dockerCli.Err(), "WARNING: No oom kill disable support") |
| } |
| if !info.CPUCfsQuota { |
| fmt.Fprintln(dockerCli.Err(), "WARNING: No cpu cfs quota support") |
| } |
| if !info.CPUCfsPeriod { |
| fmt.Fprintln(dockerCli.Err(), "WARNING: No cpu cfs period support") |
| } |
| if !info.CPUShares { |
| fmt.Fprintln(dockerCli.Err(), "WARNING: No cpu shares support") |
| } |
| if !info.CPUSet { |
| fmt.Fprintln(dockerCli.Err(), "WARNING: No cpuset support") |
| } |
| if !info.IPv4Forwarding { |
| fmt.Fprintln(dockerCli.Err(), "WARNING: IPv4 forwarding is disabled") |
| } |
| if !info.BridgeNfIptables { |
| fmt.Fprintln(dockerCli.Err(), "WARNING: bridge-nf-call-iptables is disabled") |
| } |
| if !info.BridgeNfIP6tables { |
| fmt.Fprintln(dockerCli.Err(), "WARNING: bridge-nf-call-ip6tables is disabled") |
| } |
| } |
| |
| if info.Labels != nil { |
| fmt.Fprintln(dockerCli.Out(), "Labels:") |
| for _, attribute := range info.Labels { |
| fmt.Fprintf(dockerCli.Out(), " %s\n", attribute) |
| } |
| // TODO: Engine labels with duplicate keys has been deprecated in 1.13 and will be error out |
| // after 3 release cycles (1.16). For now, a WARNING will be generated. The following will |
| // be removed eventually. |
| labelMap := map[string]string{} |
| for _, label := range info.Labels { |
| stringSlice := strings.SplitN(label, "=", 2) |
| if len(stringSlice) > 1 { |
| // If there is a conflict we will throw out an warning |
| if v, ok := labelMap[stringSlice[0]]; ok && v != stringSlice[1] { |
| fmt.Fprintln(dockerCli.Err(), "WARNING: labels with duplicate keys and conflicting values have been deprecated") |
| break |
| } |
| labelMap[stringSlice[0]] = stringSlice[1] |
| } |
| } |
| } |
| |
| fmt.Fprintf(dockerCli.Out(), "Experimental: %v\n", info.ExperimentalBuild) |
| if info.ClusterStore != "" { |
| fmt.Fprintf(dockerCli.Out(), "Cluster Store: %s\n", info.ClusterStore) |
| } |
| |
| if info.ClusterAdvertise != "" { |
| fmt.Fprintf(dockerCli.Out(), "Cluster Advertise: %s\n", info.ClusterAdvertise) |
| } |
| |
| if info.RegistryConfig != nil && (len(info.RegistryConfig.InsecureRegistryCIDRs) > 0 || len(info.RegistryConfig.IndexConfigs) > 0) { |
| fmt.Fprintln(dockerCli.Out(), "Insecure Registries:") |
| for _, registry := range info.RegistryConfig.IndexConfigs { |
| if registry.Secure == false { |
| fmt.Fprintf(dockerCli.Out(), " %s\n", registry.Name) |
| } |
| } |
| |
| for _, registry := range info.RegistryConfig.InsecureRegistryCIDRs { |
| mask, _ := registry.Mask.Size() |
| fmt.Fprintf(dockerCli.Out(), " %s/%d\n", registry.IP.String(), mask) |
| } |
| } |
| |
| if info.RegistryConfig != nil && len(info.RegistryConfig.Mirrors) > 0 { |
| fmt.Fprintln(dockerCli.Out(), "Registry Mirrors:") |
| for _, mirror := range info.RegistryConfig.Mirrors { |
| fmt.Fprintf(dockerCli.Out(), " %s\n", mirror) |
| } |
| } |
| |
| fmt.Fprintf(dockerCli.Out(), "Live Restore Enabled: %v\n", info.LiveRestoreEnabled) |
| |
| return nil |
| } |
| |
| func formatInfo(dockerCli *command.DockerCli, info types.Info, format string) error { |
| tmpl, err := templates.Parse(format) |
| if err != nil { |
| return cli.StatusError{StatusCode: 64, |
| Status: "Template parsing error: " + err.Error()} |
| } |
| err = tmpl.Execute(dockerCli.Out(), info) |
| dockerCli.Out().Write([]byte{'\n'}) |
| return err |
| } |
