package client import ( "encoding/json" "fmt" "github.com/docker/docker/api/types" Cli "github.com/docker/docker/cli" "github.com/docker/docker/pkg/httputils" "github.com/docker/docker/pkg/ioutils" flag "github.com/docker/docker/pkg/mflag" "github.com/docker/docker/pkg/units" ) // CmdInfo displays system-wide information. // // Usage: docker info func (cli *DockerCli) CmdInfo(args ...string) error { cmd := Cli.Subcmd("info", nil, "Display system-wide information", true) cmd.Require(flag.Exact, 0) cmd.ParseFlags(args, true) serverResp, err := cli.call("GET", "/info", nil, nil) if err != nil { return err } defer serverResp.body.Close() info := &types.Info{} if err := json.NewDecoder(serverResp.body).Decode(info); err != nil { return fmt.Errorf("Error reading remote info: %v", err) } fmt.Fprintf(cli.out, "Containers: %d\n", info.Containers) fmt.Fprintf(cli.out, "Images: %d\n", info.Images) ioutils.FprintfIfNotEmpty(cli.out, "Storage Driver: %s\n", info.Driver) if info.DriverStatus != nil { for _, pair := range info.DriverStatus { fmt.Fprintf(cli.out, " %s: %s\n", pair[0], pair[1]) } } ioutils.FprintfIfNotEmpty(cli.out, "Execution Driver: %s\n", info.ExecutionDriver) ioutils.FprintfIfNotEmpty(cli.out, "Logging Driver: %s\n", info.LoggingDriver) ioutils.FprintfIfNotEmpty(cli.out, "Kernel Version: %s\n", info.KernelVersion) ioutils.FprintfIfNotEmpty(cli.out, "Operating System: %s\n", info.OperatingSystem) fmt.Fprintf(cli.out, "CPUs: %d\n", info.NCPU) fmt.Fprintf(cli.out, "Total Memory: %s\n", units.BytesSize(float64(info.MemTotal))) ioutils.FprintfIfNotEmpty(cli.out, "Name: %s\n", info.Name) ioutils.FprintfIfNotEmpty(cli.out, "ID: %s\n", info.ID) if info.Debug { fmt.Fprintf(cli.out, "Debug mode (server): %v\n", info.Debug) fmt.Fprintf(cli.out, "File Descriptors: %d\n", info.NFd) fmt.Fprintf(cli.out, "Goroutines: %d\n", info.NGoroutines) fmt.Fprintf(cli.out, "System Time: %s\n", info.SystemTime) fmt.Fprintf(cli.out, "EventsListeners: %d\n", info.NEventsListener) fmt.Fprintf(cli.out, "Init SHA1: %s\n", info.InitSha1) fmt.Fprintf(cli.out, "Init Path: %s\n", info.InitPath) fmt.Fprintf(cli.out, "Docker Root Dir: %s\n", info.DockerRootDir) } ioutils.FprintfIfNotEmpty(cli.out, "Http Proxy: %s\n", info.HttpProxy) ioutils.FprintfIfNotEmpty(cli.out, "Https Proxy: %s\n", info.HttpsProxy) ioutils.FprintfIfNotEmpty(cli.out, "No Proxy: %s\n", info.NoProxy) if info.IndexServerAddress != "" { u := cli.configFile.AuthConfigs[info.IndexServerAddress].Username if len(u) > 0 { fmt.Fprintf(cli.out, "Username: %v\n", u) fmt.Fprintf(cli.out, "Registry: %v\n", info.IndexServerAddress) } } // Only output these warnings if the server supports these features if h, err := httputils.ParseServerHeader(serverResp.header.Get("Server")); err == nil { if h.OS != "windows" { if !info.MemoryLimit { fmt.Fprintf(cli.err, "WARNING: No memory limit support\n") } if !info.SwapLimit { fmt.Fprintf(cli.err, "WARNING: No swap limit support\n") } if !info.IPv4Forwarding { fmt.Fprintf(cli.err, "WARNING: IPv4 forwarding is disabled.\n") } if !info.BridgeNfIptables { fmt.Fprintf(cli.err, "WARNING: bridge-nf-call-iptables is disabled\n") } if !info.BridgeNfIp6tables { fmt.Fprintf(cli.err, "WARNING: bridge-nf-call-ip6tables is disabled\n") } } } if info.Labels != nil { fmt.Fprintln(cli.out, "Labels:") for _, attribute := range info.Labels { fmt.Fprintf(cli.out, " %s\n", attribute) } } if info.ExperimentalBuild { fmt.Fprintf(cli.out, "Experimental: true\n") } return nil }