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

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package client
import (
"fmt"
"strings"
"golang.org/x/net/context"
Cli "github.com/docker/docker/cli"
"github.com/docker/docker/pkg/ioutils"
flag "github.com/docker/docker/pkg/mflag"
"github.com/docker/docker/utils"
"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(context.Background())
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)
ioutils.FprintfIfNotEmpty(cli.out, "Cgroup Driver: %s\n", info.CgroupDriver)
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)
fmt.Fprintf(cli.out, "Docker Root Dir: %s\n", info.DockerRootDir)
fmt.Fprintf(cli.out, "Debug mode (client): %v\n", utils.IsDebugEnabled())
fmt.Fprintf(cli.out, "Debug mode (server): %v\n", info.Debug)
if 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)
}
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.KernelMemory {
fmt.Fprintln(cli.err, "WARNING: No kernel memory 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
}