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

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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, Cli.DockerCommands["info"].Description, 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, "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])
}
}
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:")
for _, driver := range info.Plugins.Volume {
fmt.Fprintf(cli.out, " %s", driver)
}
fmt.Fprintf(cli.out, "\n")
fmt.Fprintf(cli.out, " Network:")
for _, driver := range info.Plugins.Network {
fmt.Fprintf(cli.out, " %s", driver)
}
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, " 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 does not support 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.OomKillDisable {
fmt.Fprintf(cli.err, "WARNING: No oom kill disable support\n")
}
if !info.CPUCfsQuota {
fmt.Fprintf(cli.err, "WARNING: No cpu cfs quota support\n")
}
if !info.CPUCfsPeriod {
fmt.Fprintf(cli.err, "WARNING: No cpu cfs period support\n")
}
if !info.CPUShares {
fmt.Fprintf(cli.err, "WARNING: No cpu shares support\n")
}
if !info.CPUSet {
fmt.Fprintf(cli.err, "WARNING: No cpuset 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)
}
}
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
}