package client import ( "fmt" "strings" Cli "github.com/docker/docker/cli" "github.com/docker/docker/pkg/ioutils" flag "github.com/docker/docker/pkg/mflag" "github.com/docker/go-units" ) // CmdInfo displays system-wide information. // // Usage: docker info func (cli *DockerCli) CmdInfo(args ...string) error { cmd := Cli.Subcmd("info", nil, Cli.DockerCommands["info"].Description, true) cmd.Require(flag.Exact, 0) cmd.ParseFlags(args, true) info, err := cli.client.Info() if err != nil { return err } fmt.Fprintf(cli.out, "Containers: %d\n", info.Containers) fmt.Fprintf(cli.out, " Running: %d\n", info.ContainersRunning) fmt.Fprintf(cli.out, " Paused: %d\n", info.ContainersPaused) fmt.Fprintf(cli.out, " Stopped: %d\n", info.ContainersStopped) fmt.Fprintf(cli.out, "Images: %d\n", info.Images) ioutils.FprintfIfNotEmpty(cli.out, "Server Version: %s\n", info.ServerVersion) 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]) // print a warning if devicemapper is using a loopback file if pair[0] == "Data loop file" { fmt.Fprintln(cli.err, " WARNING: Usage of loopback devices is strongly discouraged for production use. Either use `--storage-opt dm.thinpooldev` or use `--storage-opt dm.no_warn_on_loop_devices=true` to suppress this warning.") } } } if info.SystemStatus != nil { for _, pair := range info.SystemStatus { 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) fmt.Fprintf(cli.out, "Plugins: \n") fmt.Fprintf(cli.out, " Volume:") fmt.Fprintf(cli.out, " %s", strings.Join(info.Plugins.Volume, " ")) fmt.Fprintf(cli.out, "\n") fmt.Fprintf(cli.out, " Network:") fmt.Fprintf(cli.out, " %s", strings.Join(info.Plugins.Network, " ")) fmt.Fprintf(cli.out, "\n") if len(info.Plugins.Authorization) != 0 { fmt.Fprintf(cli.out, " Authorization:") fmt.Fprintf(cli.out, " %s", strings.Join(info.Plugins.Authorization, " ")) fmt.Fprintf(cli.out, "\n") } ioutils.FprintfIfNotEmpty(cli.out, "Kernel Version: %s\n", info.KernelVersion) ioutils.FprintfIfNotEmpty(cli.out, "Operating System: %s\n", info.OperatingSystem) ioutils.FprintfIfNotEmpty(cli.out, "OSType: %s\n", info.OSType) ioutils.FprintfIfNotEmpty(cli.out, "Architecture: %s\n", info.Architecture) 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, " 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 does not support these features if info.OSType != "windows" { if !info.MemoryLimit { fmt.Fprintln(cli.err, "WARNING: No memory limit support") } if !info.SwapLimit { fmt.Fprintln(cli.err, "WARNING: No swap limit support") } if !info.OomKillDisable { fmt.Fprintln(cli.err, "WARNING: No oom kill disable support") } if !info.CPUCfsQuota { fmt.Fprintln(cli.err, "WARNING: No cpu cfs quota support") } if !info.CPUCfsPeriod { fmt.Fprintln(cli.err, "WARNING: No cpu cfs period support") } if !info.CPUShares { fmt.Fprintln(cli.err, "WARNING: No cpu shares support") } if !info.CPUSet { fmt.Fprintln(cli.err, "WARNING: No cpuset support") } if !info.IPv4Forwarding { fmt.Fprintln(cli.err, "WARNING: IPv4 forwarding is disabled") } if !info.BridgeNfIptables { fmt.Fprintln(cli.err, "WARNING: bridge-nf-call-iptables is disabled") } if !info.BridgeNfIP6tables { fmt.Fprintln(cli.err, "WARNING: bridge-nf-call-ip6tables is disabled") } } if info.Labels != nil { fmt.Fprintln(cli.out, "Labels:") for _, attribute := range info.Labels { fmt.Fprintf(cli.out, " %s\n", attribute) } } ioutils.FprintfIfTrue(cli.out, "Experimental: %v\n", info.ExperimentalBuild) if info.ClusterStore != "" { fmt.Fprintf(cli.out, "Cluster store: %s\n", info.ClusterStore) } if info.ClusterAdvertise != "" { fmt.Fprintf(cli.out, "Cluster advertise: %s\n", info.ClusterAdvertise) } return nil }