package libpod import ( "bufio" "bytes" "errors" "fmt" "math" "os" "runtime" "strings" "syscall" "time" "github.com/containers/buildah" "github.com/containers/buildah/pkg/util" "github.com/containers/image/v5/pkg/sysregistriesv2" "github.com/containers/podman/v4/libpod/define" "github.com/containers/podman/v4/libpod/linkmode" "github.com/containers/podman/v4/pkg/rootless" "github.com/containers/storage" "github.com/containers/storage/pkg/system" "github.com/sirupsen/logrus" ) // Info returns the store and host information func (r *Runtime) info() (*define.Info, error) { info := define.Info{} versionInfo, err := define.GetVersion() if err != nil { return nil, fmt.Errorf("getting version info: %w", err) } info.Version = versionInfo // get host information hostInfo, err := r.hostInfo() if err != nil { return nil, fmt.Errorf("getting host info: %w", err) } info.Host = hostInfo // get store information storeInfo, err := r.storeInfo() if err != nil { return nil, fmt.Errorf("getting store info: %w", err) } info.Store = storeInfo registries := make(map[string]interface{}) sys := r.SystemContext() data, err := sysregistriesv2.GetRegistries(sys) if err != nil { return nil, fmt.Errorf("getting registries: %w", err) } for _, reg := range data { registries[reg.Prefix] = reg } regs, err := sysregistriesv2.UnqualifiedSearchRegistries(sys) if err != nil { return nil, fmt.Errorf("getting registries: %w", err) } if len(regs) > 0 { registries["search"] = regs } volumePlugins := make([]string, 0, len(r.config.Engine.VolumePlugins)+1) // the local driver always exists volumePlugins = append(volumePlugins, "local") for plugin := range r.config.Engine.VolumePlugins { volumePlugins = append(volumePlugins, plugin) } info.Plugins.Volume = volumePlugins info.Plugins.Network = r.network.Drivers() info.Plugins.Log = logDrivers info.Registries = registries return &info, nil } // top-level "host" info func (r *Runtime) hostInfo() (*define.HostInfo, error) { // lets say OS, arch, number of cpus, amount of memory, maybe os distribution/version, hostname, kernel version, uptime mi, err := system.ReadMemInfo() if err != nil { return nil, fmt.Errorf("reading memory info: %w", err) } hostDistributionInfo := r.GetHostDistributionInfo() kv, err := util.ReadKernelVersion() if err != nil { return nil, fmt.Errorf("reading kernel version: %w", err) } host, err := os.Hostname() if err != nil { return nil, fmt.Errorf("getting hostname: %w", err) } cpuUtil, err := getCPUUtilization() if err != nil { return nil, err } info := define.HostInfo{ Arch: runtime.GOARCH, BuildahVersion: buildah.Version, Linkmode: linkmode.Linkmode(), CPUs: runtime.NumCPU(), CPUUtilization: cpuUtil, Distribution: hostDistributionInfo, LogDriver: r.config.Containers.LogDriver, EventLogger: r.eventer.String(), Hostname: host, Kernel: kv, MemFree: mi.MemFree, MemTotal: mi.MemTotal, NetworkBackend: r.config.Network.NetworkBackend, OS: runtime.GOOS, SwapFree: mi.SwapFree, SwapTotal: mi.SwapTotal, } if err := r.setPlatformHostInfo(&info); err != nil { return nil, err } conmonInfo, ociruntimeInfo, err := r.defaultOCIRuntime.RuntimeInfo() if err != nil { logrus.Errorf("Getting info on OCI runtime %s: %v", r.defaultOCIRuntime.Name(), err) } else { info.Conmon = conmonInfo info.OCIRuntime = ociruntimeInfo } duration, err := util.ReadUptime() if err != nil { return nil, fmt.Errorf("reading up time: %w", err) } uptime := struct { hours float64 minutes float64 seconds float64 }{ hours: duration.Truncate(time.Hour).Hours(), minutes: duration.Truncate(time.Minute).Minutes(), seconds: duration.Truncate(time.Second).Seconds(), } // Could not find a humanize-formatter for time.Duration var buffer bytes.Buffer buffer.WriteString(fmt.Sprintf("%.0fh %.0fm %.2fs", uptime.hours, math.Mod(uptime.seconds, 3600)/60, math.Mod(uptime.seconds, 60), )) if int64(uptime.hours) > 0 { buffer.WriteString(fmt.Sprintf(" (Approximately %.2f days)", uptime.hours/24)) } info.Uptime = buffer.String() return &info, nil } func (r *Runtime) getContainerStoreInfo() (define.ContainerStore, error) { var paused, running, stopped int cs := define.ContainerStore{} cons, err := r.GetAllContainers() if err != nil { return cs, err } cs.Number = len(cons) for _, con := range cons { state, err := con.State() if err != nil { if errors.Is(err, define.ErrNoSuchCtr) { // container was probably removed cs.Number-- continue } return cs, err } switch state { case define.ContainerStateRunning: running++ case define.ContainerStatePaused: paused++ default: stopped++ } } cs.Paused = paused cs.Stopped = stopped cs.Running = running return cs, nil } // top-level "store" info func (r *Runtime) storeInfo() (*define.StoreInfo, error) { // lets say storage driver in use, number of images, number of containers configFile, err := storage.DefaultConfigFile(rootless.IsRootless()) if err != nil { return nil, err } images, err := r.store.Images() if err != nil { return nil, fmt.Errorf("getting number of images: %w", err) } conInfo, err := r.getContainerStoreInfo() if err != nil { return nil, err } imageInfo := define.ImageStore{Number: len(images)} var grStats syscall.Statfs_t if err := syscall.Statfs(r.store.GraphRoot(), &grStats); err != nil { return nil, fmt.Errorf("unable to collect graph root usasge for %q: %w", r.store.GraphRoot(), err) } allocated := uint64(grStats.Bsize) * grStats.Blocks info := define.StoreInfo{ ImageStore: imageInfo, ImageCopyTmpDir: os.Getenv("TMPDIR"), ContainerStore: conInfo, GraphRoot: r.store.GraphRoot(), GraphRootAllocated: allocated, GraphRootUsed: allocated - (uint64(grStats.Bsize) * grStats.Bfree), RunRoot: r.store.RunRoot(), GraphDriverName: r.store.GraphDriverName(), GraphOptions: nil, VolumePath: r.config.Engine.VolumePath, ConfigFile: configFile, } graphOptions := map[string]interface{}{} for _, o := range r.store.GraphOptions() { split := strings.SplitN(o, "=", 2) if strings.HasSuffix(split[0], "mount_program") { version, err := programVersion(split[1]) if err != nil { logrus.Warnf("Failed to retrieve program version for %s: %v", split[1], err) } program := map[string]interface{}{} program["Executable"] = split[1] program["Version"] = version program["Package"] = packageVersion(split[1]) graphOptions[split[0]] = program } else { graphOptions[split[0]] = split[1] } } info.GraphOptions = graphOptions statusPairs, err := r.store.Status() if err != nil { return nil, err } status := map[string]string{} for _, pair := range statusPairs { status[pair[0]] = pair[1] } info.GraphStatus = status return &info, nil } // GetHostDistributionInfo returns a map containing the host's distribution and version func (r *Runtime) GetHostDistributionInfo() define.DistributionInfo { // Populate values in case we cannot find the values // or the file dist := define.DistributionInfo{ Distribution: "unknown", Version: "unknown", } f, err := os.Open("/etc/os-release") if err != nil { return dist } defer f.Close() l := bufio.NewScanner(f) for l.Scan() { if strings.HasPrefix(l.Text(), "ID=") { dist.Distribution = strings.TrimPrefix(l.Text(), "ID=") } if strings.HasPrefix(l.Text(), "VARIANT_ID=") { dist.Variant = strings.Trim(strings.TrimPrefix(l.Text(), "VARIANT_ID="), "\"") } if strings.HasPrefix(l.Text(), "VERSION_ID=") { dist.Version = strings.Trim(strings.TrimPrefix(l.Text(), "VERSION_ID="), "\"") } if strings.HasPrefix(l.Text(), "VERSION_CODENAME=") { dist.Codename = strings.Trim(strings.TrimPrefix(l.Text(), "VERSION_CODENAME="), "\"") } } return dist }