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info.go
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/
info.go
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package daemon
import (
"os"
"runtime"
"strings"
"time"
"github.com/Sirupsen/logrus"
"github.com/docker/docker/dockerversion"
"github.com/docker/docker/pkg/fileutils"
"github.com/docker/docker/pkg/parsers/kernel"
"github.com/docker/docker/pkg/parsers/operatingsystem"
"github.com/docker/docker/pkg/platform"
"github.com/docker/docker/pkg/sysinfo"
"github.com/docker/docker/pkg/system"
"github.com/docker/docker/registry"
"github.com/docker/docker/utils"
"github.com/docker/docker/volume/drivers"
"github.com/docker/engine-api/types"
)
// SystemInfo returns information about the host server the daemon is running on.
func (daemon *Daemon) SystemInfo() (*types.Info, error) {
kernelVersion := "<unknown>"
if kv, err := kernel.GetKernelVersion(); err == nil {
kernelVersion = kv.String()
}
operatingSystem := "<unknown>"
if s, err := operatingsystem.GetOperatingSystem(); err == nil {
operatingSystem = s
}
// Don't do containerized check on Windows
if runtime.GOOS != "windows" {
if inContainer, err := operatingsystem.IsContainerized(); err != nil {
logrus.Errorf("Could not determine if daemon is containerized: %v", err)
operatingSystem += " (error determining if containerized)"
} else if inContainer {
operatingSystem += " (containerized)"
}
}
meminfo, err := system.ReadMemInfo()
if err != nil {
logrus.Errorf("Could not read system memory info: %v", err)
}
// if we still have the original dockerinit binary from before
// we copied it locally, let's return the path to that, since
// that's more intuitive (the copied path is trivial to derive
// by hand given VERSION)
initPath := utils.DockerInitPath("")
sysInfo := sysinfo.New(true)
var cRunning, cPaused, cStopped int
for _, c := range daemon.List() {
switch c.StateString() {
case "paused":
cPaused++
case "running":
cRunning++
default:
cStopped++
}
}
v := &types.Info{
ID: daemon.ID,
Containers: len(daemon.List()),
ContainersRunning: cRunning,
ContainersPaused: cPaused,
ContainersStopped: cStopped,
Images: len(daemon.imageStore.Map()),
Driver: daemon.GraphDriverName(),
DriverStatus: daemon.layerStore.DriverStatus(),
Plugins: daemon.showPluginsInfo(),
IPv4Forwarding: !sysInfo.IPv4ForwardingDisabled,
BridgeNfIptables: !sysInfo.BridgeNfCallIptablesDisabled,
BridgeNfIP6tables: !sysInfo.BridgeNfCallIP6tablesDisabled,
Debug: utils.IsDebugEnabled(),
NFd: fileutils.GetTotalUsedFds(),
NGoroutines: runtime.NumGoroutine(),
SystemTime: time.Now().Format(time.RFC3339Nano),
ExecutionDriver: daemon.ExecutionDriver().Name(),
LoggingDriver: daemon.defaultLogConfig.Type,
NEventsListener: daemon.EventsService.SubscribersCount(),
KernelVersion: kernelVersion,
OperatingSystem: operatingSystem,
IndexServerAddress: registry.IndexServer,
OSType: platform.OSType,
Architecture: platform.Architecture,
RegistryConfig: daemon.RegistryService.Config,
InitSha1: dockerversion.InitSHA1,
InitPath: initPath,
NCPU: runtime.NumCPU(),
MemTotal: meminfo.MemTotal,
DockerRootDir: daemon.configStore.Root,
Labels: daemon.configStore.Labels,
ExperimentalBuild: utils.ExperimentalBuild(),
ServerVersion: dockerversion.Version,
ClusterStore: daemon.configStore.ClusterStore,
ClusterAdvertise: daemon.configStore.ClusterAdvertise,
HTTPProxy: getProxyEnv("http_proxy"),
HTTPSProxy: getProxyEnv("https_proxy"),
NoProxy: getProxyEnv("no_proxy"),
}
// TODO Windows. Refactor this more once sysinfo is refactored into
// platform specific code. On Windows, sysinfo.cgroupMemInfo and
// sysinfo.cgroupCpuInfo will be nil otherwise and cause a SIGSEGV if
// an attempt is made to access through them.
if runtime.GOOS != "windows" {
v.MemoryLimit = sysInfo.MemoryLimit
v.SwapLimit = sysInfo.SwapLimit
v.OomKillDisable = sysInfo.OomKillDisable
v.CPUCfsPeriod = sysInfo.CPUCfsPeriod
v.CPUCfsQuota = sysInfo.CPUCfsQuota
v.CPUShares = sysInfo.CPUShares
v.CPUSet = sysInfo.Cpuset
}
if hostname, err := os.Hostname(); err == nil {
v.Name = hostname
}
return v, nil
}
// SystemVersion returns version information about the daemon.
func (daemon *Daemon) SystemVersion() types.Version {
v := types.Version{
Version: dockerversion.Version,
GitCommit: dockerversion.GitCommit,
GoVersion: runtime.Version(),
Os: runtime.GOOS,
Arch: runtime.GOARCH,
BuildTime: dockerversion.BuildTime,
Experimental: utils.ExperimentalBuild(),
}
if kernelVersion, err := kernel.GetKernelVersion(); err == nil {
v.KernelVersion = kernelVersion.String()
}
return v
}
func (daemon *Daemon) showPluginsInfo() types.PluginsInfo {
var pluginsInfo types.PluginsInfo
pluginsInfo.Volume = volumedrivers.GetDriverList()
networkDriverList := daemon.GetNetworkDriverList()
for nd := range networkDriverList {
pluginsInfo.Network = append(pluginsInfo.Network, nd)
}
pluginsInfo.Authorization = daemon.configStore.AuthorizationPlugins
return pluginsInfo
}
// The uppercase and the lowercase are available for the proxy settings.
// See the Go specification for details on these variables. https://golang.org/pkg/net/http/
func getProxyEnv(key string) string {
proxyValue := os.Getenv(strings.ToUpper(key))
if proxyValue == "" {
return os.Getenv(strings.ToLower(key))
}
return proxyValue
}