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 := "" if kv, err := kernel.GetKernelVersion(); err == nil { kernelVersion = kv.String() } operatingSystem := "" 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) v := &types.Info{ ID: daemon.ID, Containers: len(daemon.List()), 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: 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, 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.AuthZPlugins 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 }