1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
package libpod
import (
"bufio"
"bytes"
"fmt"
"github.com/containers/buildah"
"io/ioutil"
"os"
"runtime"
"strconv"
"strings"
"time"
"github.com/containers/libpod/pkg/rootless"
"github.com/containers/libpod/utils"
"github.com/containers/storage/pkg/system"
"github.com/pkg/errors"
)
// InfoData holds the info type, i.e store, host etc and the data for each type
type InfoData struct {
Type string
Data map[string]interface{}
}
// 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()
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
conmonVersion, _ := r.GetConmonVersion()
ociruntimeVersion, _ := r.GetOCIRuntimeVersion()
hostDistributionInfo := r.GetHostDistributionInfo()
info["Conmon"] = map[string]interface{}{
"path": r.conmonPath,
"package": r.ociRuntime.conmonPackage(),
"version": conmonVersion,
}
info["OCIRuntime"] = map[string]interface{}{
"path": r.ociRuntime.path,
"package": r.ociRuntime.pathPackage(),
"version": ociruntimeVersion,
}
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
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
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()
info["GraphOptions"] = r.store.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
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
}
// GetConmonVersion returns a string representation of the conmon version
func (r *Runtime) GetConmonVersion() (string, error) {
output, err := utils.ExecCmd(r.conmonPath, "--version")
if err != nil {
return "", err
}
return strings.TrimSuffix(strings.Replace(output, "\n", ", ", 1), "\n"), nil
}
// GetOCIRuntimeVersion returns a string representation of the oci runtimes version
func (r *Runtime) GetOCIRuntimeVersion() (string, error) {
output, err := utils.ExecCmd(r.ociRuntimePath, "--version")
if err != nil {
return "", err
}
return strings.TrimSuffix(output, "\n"), 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
}
|
