package libpod import ( "bufio" "bytes" "fmt" "io/ioutil" "os" "os/exec" "runtime" "strconv" "strings" "time" "github.com/containers/buildah" "github.com/containers/libpod/pkg/cgroups" "github.com/containers/libpod/pkg/rootless" "github.com/containers/storage" "github.com/containers/storage/pkg/system" "github.com/pkg/errors" "github.com/sirupsen/logrus" ) // top-level "host" info func (r *Runtime) hostInfo() (map[string]interface{}, error) { // lets say OS, arch, number of cpus, amount of memory, maybe os distribution/version, hostname, kernel version, uptime info := map[string]interface{}{} info["os"] = runtime.GOOS info["arch"] = runtime.GOARCH info["cpus"] = runtime.NumCPU() info["rootless"] = rootless.IsRootless() unified, err := cgroups.IsCgroup2UnifiedMode() if err != nil { return nil, errors.Wrapf(err, "error reading cgroups mode") } cgroupVersion := "v1" if unified { cgroupVersion = "v2" } info["CgroupVersion"] = cgroupVersion mi, err := system.ReadMemInfo() if err != nil { return nil, errors.Wrapf(err, "error reading memory info") } // TODO this might be a place for github.com/dustin/go-humanize info["MemTotal"] = mi.MemTotal info["MemFree"] = mi.MemFree info["SwapTotal"] = mi.SwapTotal info["SwapFree"] = mi.SwapFree hostDistributionInfo := r.GetHostDistributionInfo() if rootless.IsRootless() { if path, err := exec.LookPath("slirp4netns"); err == nil { logrus.Warnf("Failed to retrieve program version for %s: %v", path, err) version, err := programVersion(path) if err != nil { logrus.Warnf("Failed to retrieve program version for %s: %v", path, err) } program := map[string]interface{}{} program["Executable"] = path program["Version"] = version program["Package"] = packageVersion(path) info["slirp4netns"] = program } uidmappings, err := rootless.ReadMappingsProc("/proc/self/uid_map") if err != nil { return nil, errors.Wrapf(err, "error reading uid mappings") } gidmappings, err := rootless.ReadMappingsProc("/proc/self/gid_map") if err != nil { return nil, errors.Wrapf(err, "error reading gid mappings") } idmappings := make(map[string]interface{}) idmappings["uidmap"] = uidmappings idmappings["gidmap"] = gidmappings info["IDMappings"] = idmappings } info["Distribution"] = map[string]interface{}{ "distribution": hostDistributionInfo["Distribution"], "version": hostDistributionInfo["Version"], } info["BuildahVersion"] = buildah.Version kv, err := readKernelVersion() if err != nil { return nil, errors.Wrapf(err, "error reading kernel version") } info["kernel"] = kv runtimeInfo, err := r.defaultOCIRuntime.RuntimeInfo() if err != nil { logrus.Errorf("Error getting info on OCI runtime %s: %v", r.defaultOCIRuntime.Name(), err) } else { for k, v := range runtimeInfo { info[k] = v } } up, err := readUptime() if err != nil { return nil, errors.Wrapf(err, "error reading up time") } // Convert uptime in seconds to a human-readable format upSeconds := up + "s" upDuration, err := time.ParseDuration(upSeconds) if err != nil { return nil, errors.Wrapf(err, "error parsing system uptime") } hoursFound := false var timeBuffer bytes.Buffer var hoursBuffer bytes.Buffer for _, elem := range upDuration.String() { timeBuffer.WriteRune(elem) if elem == 'h' || elem == 'm' { timeBuffer.WriteRune(' ') if elem == 'h' { hoursFound = true } } if !hoursFound { hoursBuffer.WriteRune(elem) } } info["uptime"] = timeBuffer.String() if hoursFound { hours, err := strconv.ParseFloat(hoursBuffer.String(), 64) if err == nil { days := hours / 24 info["uptime"] = fmt.Sprintf("%s (Approximately %.2f days)", info["uptime"], days) } } host, err := os.Hostname() if err != nil { return nil, errors.Wrapf(err, "error getting hostname") } info["hostname"] = host info["eventlogger"] = r.eventer.String() return info, nil } // top-level "store" info func (r *Runtime) storeInfo() (map[string]interface{}, error) { // lets say storage driver in use, number of images, number of containers info := map[string]interface{}{} info["GraphRoot"] = r.store.GraphRoot() info["RunRoot"] = r.store.RunRoot() info["GraphDriverName"] = r.store.GraphDriverName() 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 info["VolumePath"] = r.config.Engine.VolumePath configFile, err := storage.DefaultConfigFile(rootless.IsRootless()) if err != nil { return nil, err } info["ConfigFile"] = configFile 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 images, err := r.store.Images() if err != nil { return nil, errors.Wrapf(err, "error getting number of images") } info["ImageStore"] = map[string]interface{}{ "number": len(images), } containers, err := r.store.Containers() if err != nil { return nil, errors.Wrapf(err, "error getting number of containers") } info["ContainerStore"] = map[string]interface{}{ "number": len(containers), } return info, nil } func readKernelVersion() (string, error) { buf, err := ioutil.ReadFile("/proc/version") if err != nil { return "", err } f := bytes.Fields(buf) if len(f) < 2 { return string(bytes.TrimSpace(buf)), nil } return string(f[2]), nil } func readUptime() (string, error) { buf, err := ioutil.ReadFile("/proc/uptime") if err != nil { return "", err } f := bytes.Fields(buf) if len(f) < 1 { return "", fmt.Errorf("invalid uptime") } return string(f[0]), nil } // GetHostDistributionInfo returns a map containing the host's distribution and version func (r *Runtime) GetHostDistributionInfo() map[string]string { dist := make(map[string]string) // Populate values in case we cannot find the values // or the file dist["Distribution"] = "unknown" dist["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(), "VERSION_ID=") { dist["Version"] = strings.Trim(strings.TrimPrefix(l.Text(), "VERSION_ID="), "\"") } } return dist }