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info.go
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/
info.go
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package daemon
import (
"os"
"runtime"
"time"
"github.com/Sirupsen/logrus"
"github.com/docker/docker/api/types"
"github.com/docker/docker/autogen/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/sysinfo"
"github.com/docker/docker/pkg/system"
"github.com/docker/docker/registry"
"github.com/docker/docker/utils"
)
// SystemInfo returns information about the host server the daemon is running on.
func (daemon *Daemon) SystemInfo() (*types.Info, error) {
images := daemon.Graph().Map()
var imgcount int
if images == nil {
imgcount = 0
} else {
imgcount = len(images)
}
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("")
if initPath == "" {
// if that fails, we'll just return the path from the daemon
initPath = daemon.systemInitPath()
}
sysInfo := sysinfo.New(true)
v := &types.Info{
ID: daemon.ID,
Containers: len(daemon.List()),
Images: imgcount,
Driver: daemon.GraphDriver().String(),
DriverStatus: daemon.GraphDriver().Status(),
IPv4Forwarding: !sysInfo.IPv4ForwardingDisabled,
BridgeNfIptables: !sysInfo.BridgeNfCallIptablesDisabled,
BridgeNfIP6tables: !sysInfo.BridgeNfCallIP6tablesDisabled,
Debug: os.Getenv("DEBUG") != "",
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,
RegistryConfig: daemon.RegistryService.Config,
InitSha1: dockerversion.INITSHA1,
InitPath: initPath,
NCPU: runtime.NumCPU(),
MemTotal: meminfo.MemTotal,
DockerRootDir: daemon.config().Root,
Labels: daemon.config().Labels,
ExperimentalBuild: utils.ExperimentalBuild(),
ServerVersion: dockerversion.VERSION,
ClusterStore: daemon.config().ClusterStore,
}
// 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
}
if httpProxy := os.Getenv("http_proxy"); httpProxy != "" {
v.HTTPProxy = httpProxy
}
if httpsProxy := os.Getenv("https_proxy"); httpsProxy != "" {
v.HTTPSProxy = httpsProxy
}
if noProxy := os.Getenv("no_proxy"); noProxy != "" {
v.NoProxy = noProxy
}
if hostname, err := os.Hostname(); err == nil {
v.Name = hostname
}
return v, nil
}