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moby--moby/api/client/info.go

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package client
import (
"encoding/json"
"fmt"
"os"
"github.com/docker/docker/api/types"
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", "", "Display system-wide information", true)
cmd.Require(flag.Exact, 0)
cmd.ParseFlags(args, false)
rdr, _, err := cli.call("GET", "/info", nil, nil)
if err != nil {
return err
}
info := &types.Info{}
if err := json.NewDecoder(rdr).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)
fmt.Fprintf(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])
}
}
fmt.Fprintf(cli.out, "Execution Driver: %s\n", info.ExecutionDriver)
fmt.Fprintf(cli.out, "Logging Driver: %s\n", info.LoggingDriver)
fmt.Fprintf(cli.out, "Kernel Version: %s\n", info.KernelVersion)
fmt.Fprintf(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)))
fmt.Fprintf(cli.out, "Name: %s\n", info.Name)
fmt.Fprintf(cli.out, "ID: %s\n", info.ID)
if info.Debug || os.Getenv("DEBUG") != "" {
fmt.Fprintf(cli.out, "Debug mode (server): %v\n", info.Debug)
fmt.Fprintf(cli.out, "Debug mode (client): %v\n", os.Getenv("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)
}
if info.HttpProxy != "" {
fmt.Fprintf(cli.out, "Http Proxy: %s\n", info.HttpProxy)
}
if info.HttpsProxy != "" {
fmt.Fprintf(cli.out, "Https Proxy: %s\n", info.HttpsProxy)
}
if info.NoProxy != "" {
fmt.Fprintf(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)
}
}
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.Labels != nil {
fmt.Fprintln(cli.out, "Labels:")
for _, attribute := range info.Labels {
fmt.Fprintf(cli.out, " %s\n", attribute)
}
}
return nil
}