github.com/kobeld/docker@v1.12.0-rc1/api/client/info.go (about)

     1  package client
     2  
     3  import (
     4  	"fmt"
     5  	"strings"
     6  
     7  	"golang.org/x/net/context"
     8  
     9  	Cli "github.com/docker/docker/cli"
    10  	"github.com/docker/docker/pkg/ioutils"
    11  	flag "github.com/docker/docker/pkg/mflag"
    12  	"github.com/docker/docker/utils"
    13  	"github.com/docker/engine-api/types/swarm"
    14  	"github.com/docker/go-units"
    15  )
    16  
    17  // CmdInfo displays system-wide information.
    18  //
    19  // Usage: docker info
    20  func (cli *DockerCli) CmdInfo(args ...string) error {
    21  	cmd := Cli.Subcmd("info", nil, Cli.DockerCommands["info"].Description, true)
    22  	cmd.Require(flag.Exact, 0)
    23  
    24  	cmd.ParseFlags(args, true)
    25  
    26  	info, err := cli.client.Info(context.Background())
    27  	if err != nil {
    28  		return err
    29  	}
    30  
    31  	fmt.Fprintf(cli.out, "Containers: %d\n", info.Containers)
    32  	fmt.Fprintf(cli.out, " Running: %d\n", info.ContainersRunning)
    33  	fmt.Fprintf(cli.out, " Paused: %d\n", info.ContainersPaused)
    34  	fmt.Fprintf(cli.out, " Stopped: %d\n", info.ContainersStopped)
    35  	fmt.Fprintf(cli.out, "Images: %d\n", info.Images)
    36  	ioutils.FprintfIfNotEmpty(cli.out, "Server Version: %s\n", info.ServerVersion)
    37  	ioutils.FprintfIfNotEmpty(cli.out, "Storage Driver: %s\n", info.Driver)
    38  	if info.DriverStatus != nil {
    39  		for _, pair := range info.DriverStatus {
    40  			fmt.Fprintf(cli.out, " %s: %s\n", pair[0], pair[1])
    41  
    42  			// print a warning if devicemapper is using a loopback file
    43  			if pair[0] == "Data loop file" {
    44  				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.")
    45  			}
    46  		}
    47  
    48  	}
    49  	if info.SystemStatus != nil {
    50  		for _, pair := range info.SystemStatus {
    51  			fmt.Fprintf(cli.out, "%s: %s\n", pair[0], pair[1])
    52  		}
    53  	}
    54  	ioutils.FprintfIfNotEmpty(cli.out, "Execution Driver: %s\n", info.ExecutionDriver)
    55  	ioutils.FprintfIfNotEmpty(cli.out, "Logging Driver: %s\n", info.LoggingDriver)
    56  	ioutils.FprintfIfNotEmpty(cli.out, "Cgroup Driver: %s\n", info.CgroupDriver)
    57  
    58  	fmt.Fprintf(cli.out, "Plugins:\n")
    59  	fmt.Fprintf(cli.out, " Volume:")
    60  	fmt.Fprintf(cli.out, " %s", strings.Join(info.Plugins.Volume, " "))
    61  	fmt.Fprintf(cli.out, "\n")
    62  	fmt.Fprintf(cli.out, " Network:")
    63  	fmt.Fprintf(cli.out, " %s", strings.Join(info.Plugins.Network, " "))
    64  	fmt.Fprintf(cli.out, "\n")
    65  
    66  	if len(info.Plugins.Authorization) != 0 {
    67  		fmt.Fprintf(cli.out, " Authorization:")
    68  		fmt.Fprintf(cli.out, " %s", strings.Join(info.Plugins.Authorization, " "))
    69  		fmt.Fprintf(cli.out, "\n")
    70  	}
    71  
    72  	fmt.Fprintf(cli.out, "Swarm: %v\n", info.Swarm.LocalNodeState)
    73  	if info.Swarm.LocalNodeState != swarm.LocalNodeStateInactive {
    74  		fmt.Fprintf(cli.out, " NodeID: %s\n", info.Swarm.NodeID)
    75  		if info.Swarm.Error != "" {
    76  			fmt.Fprintf(cli.out, " Error: %v\n", info.Swarm.Error)
    77  		}
    78  		if info.Swarm.ControlAvailable {
    79  			fmt.Fprintf(cli.out, " IsManager: Yes\n")
    80  			fmt.Fprintf(cli.out, " Managers: %d\n", info.Swarm.Managers)
    81  			fmt.Fprintf(cli.out, " Nodes: %d\n", info.Swarm.Nodes)
    82  			ioutils.FprintfIfNotEmpty(cli.out, " CACertHash: %s\n", info.Swarm.CACertHash)
    83  		} else {
    84  			fmt.Fprintf(cli.out, " IsManager: No\n")
    85  		}
    86  	}
    87  
    88  	if len(info.Runtimes) > 0 {
    89  		fmt.Fprintf(cli.out, "Runtimes:")
    90  		for name := range info.Runtimes {
    91  			fmt.Fprintf(cli.out, " %s", name)
    92  		}
    93  		fmt.Fprint(cli.out, "\n")
    94  		fmt.Fprintf(cli.out, "Default Runtime: %s\n", info.DefaultRuntime)
    95  	}
    96  
    97  	ioutils.FprintfIfNotEmpty(cli.out, "Kernel Version: %s\n", info.KernelVersion)
    98  	ioutils.FprintfIfNotEmpty(cli.out, "Operating System: %s\n", info.OperatingSystem)
    99  	ioutils.FprintfIfNotEmpty(cli.out, "OSType: %s\n", info.OSType)
   100  	ioutils.FprintfIfNotEmpty(cli.out, "Architecture: %s\n", info.Architecture)
   101  	fmt.Fprintf(cli.out, "CPUs: %d\n", info.NCPU)
   102  	fmt.Fprintf(cli.out, "Total Memory: %s\n", units.BytesSize(float64(info.MemTotal)))
   103  	ioutils.FprintfIfNotEmpty(cli.out, "Name: %s\n", info.Name)
   104  	ioutils.FprintfIfNotEmpty(cli.out, "ID: %s\n", info.ID)
   105  	fmt.Fprintf(cli.out, "Docker Root Dir: %s\n", info.DockerRootDir)
   106  	fmt.Fprintf(cli.out, "Debug Mode (client): %v\n", utils.IsDebugEnabled())
   107  	fmt.Fprintf(cli.out, "Debug Mode (server): %v\n", info.Debug)
   108  
   109  	if info.Debug {
   110  		fmt.Fprintf(cli.out, " File Descriptors: %d\n", info.NFd)
   111  		fmt.Fprintf(cli.out, " Goroutines: %d\n", info.NGoroutines)
   112  		fmt.Fprintf(cli.out, " System Time: %s\n", info.SystemTime)
   113  		fmt.Fprintf(cli.out, " EventsListeners: %d\n", info.NEventsListener)
   114  	}
   115  
   116  	ioutils.FprintfIfNotEmpty(cli.out, "Http Proxy: %s\n", info.HTTPProxy)
   117  	ioutils.FprintfIfNotEmpty(cli.out, "Https Proxy: %s\n", info.HTTPSProxy)
   118  	ioutils.FprintfIfNotEmpty(cli.out, "No Proxy: %s\n", info.NoProxy)
   119  
   120  	if info.IndexServerAddress != "" {
   121  		u := cli.configFile.AuthConfigs[info.IndexServerAddress].Username
   122  		if len(u) > 0 {
   123  			fmt.Fprintf(cli.out, "Username: %v\n", u)
   124  		}
   125  		fmt.Fprintf(cli.out, "Registry: %v\n", info.IndexServerAddress)
   126  	}
   127  
   128  	// Only output these warnings if the server does not support these features
   129  	if info.OSType != "windows" {
   130  		if !info.MemoryLimit {
   131  			fmt.Fprintln(cli.err, "WARNING: No memory limit support")
   132  		}
   133  		if !info.SwapLimit {
   134  			fmt.Fprintln(cli.err, "WARNING: No swap limit support")
   135  		}
   136  		if !info.KernelMemory {
   137  			fmt.Fprintln(cli.err, "WARNING: No kernel memory limit support")
   138  		}
   139  		if !info.OomKillDisable {
   140  			fmt.Fprintln(cli.err, "WARNING: No oom kill disable support")
   141  		}
   142  		if !info.CPUCfsQuota {
   143  			fmt.Fprintln(cli.err, "WARNING: No cpu cfs quota support")
   144  		}
   145  		if !info.CPUCfsPeriod {
   146  			fmt.Fprintln(cli.err, "WARNING: No cpu cfs period support")
   147  		}
   148  		if !info.CPUShares {
   149  			fmt.Fprintln(cli.err, "WARNING: No cpu shares support")
   150  		}
   151  		if !info.CPUSet {
   152  			fmt.Fprintln(cli.err, "WARNING: No cpuset support")
   153  		}
   154  		if !info.IPv4Forwarding {
   155  			fmt.Fprintln(cli.err, "WARNING: IPv4 forwarding is disabled")
   156  		}
   157  		if !info.BridgeNfIptables {
   158  			fmt.Fprintln(cli.err, "WARNING: bridge-nf-call-iptables is disabled")
   159  		}
   160  		if !info.BridgeNfIP6tables {
   161  			fmt.Fprintln(cli.err, "WARNING: bridge-nf-call-ip6tables is disabled")
   162  		}
   163  	}
   164  
   165  	if info.Labels != nil {
   166  		fmt.Fprintln(cli.out, "Labels:")
   167  		for _, attribute := range info.Labels {
   168  			fmt.Fprintf(cli.out, " %s\n", attribute)
   169  		}
   170  	}
   171  
   172  	ioutils.FprintfIfTrue(cli.out, "Experimental: %v\n", info.ExperimentalBuild)
   173  	if info.ClusterStore != "" {
   174  		fmt.Fprintf(cli.out, "Cluster Store: %s\n", info.ClusterStore)
   175  	}
   176  
   177  	if info.ClusterAdvertise != "" {
   178  		fmt.Fprintf(cli.out, "Cluster Advertise: %s\n", info.ClusterAdvertise)
   179  	}
   180  
   181  	if info.RegistryConfig != nil && (len(info.RegistryConfig.InsecureRegistryCIDRs) > 0 || len(info.RegistryConfig.IndexConfigs) > 0) {
   182  		fmt.Fprintln(cli.out, "Insecure Registries:")
   183  		for _, registry := range info.RegistryConfig.IndexConfigs {
   184  			if registry.Secure == false {
   185  				fmt.Fprintf(cli.out, " %s\n", registry.Name)
   186  			}
   187  		}
   188  
   189  		for _, registry := range info.RegistryConfig.InsecureRegistryCIDRs {
   190  			mask, _ := registry.Mask.Size()
   191  			fmt.Fprintf(cli.out, " %s/%d\n", registry.IP.String(), mask)
   192  		}
   193  	}
   194  	return nil
   195  }