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
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
|
<!DOCTYPE HTML>
<html lang="en" class="h-100">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<title>-</title>
<link rel="stylesheet" href="css/bootstrap.min.css">
</head>
<body class="d-flex flex-column h-100">
<div class="container flex-shrink-0">
<div class="row mt-3">
<div class="col">
<div style="display: flex; justify-content: space-between; align-items: flex-end; gap: .5em;">
<div>
<h1 class="h2" id="hostname">-</h1>
<p class="mb-0 small">refreshed every <span id="status_refresh_interval">-</span> seconds</p>
</div>
<div>
<div class="btn-group" role="group" style="width: 100%;" id="power_buttons">
<button type="button" class="btn btn-sm btn-warning" onclick="reboot();">Reboot</button>
<button type="button" class="btn btn-sm btn-danger" onclick="poweroff();">Shutdown</button>
</div>
<div title="Thermal sensor readings from /sys/class/thermal. Only the first few are shown." class="small mt-1" id="thermal"></div>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col">
<hr>
<p><button type="button" class="btn btn-outline-primary btn-sm mr-2" data-toggle="collapse" data-target="#collapse_top">+</button><a href="#collapse_top" data-toggle="collapse"><code>top</code></a> <span class="float-right"><small>refreshed every <span id="top_refresh_interval">-</span> seconds</small></span></p>
<div class="collapse show" id="collapse_top">
<pre class="pre-scrollable" id="top">Data not loaded.</pre>
</div>
<hr>
<p><button type="button" class="btn btn-outline-primary btn-sm mr-2" data-toggle="collapse" data-target="#collapse_docker">+</button><a href="#collapse_docker" data-toggle="collapse"><code>docker ps -a</code></a></p>
<div class="collapse" id="collapse_docker">
<div id="docker">
<pre class="pre-scrollable">Data not loaded.</pre>
</div>
</div>
<hr>
<p><button type="button" class="btn btn-outline-primary btn-sm mr-2" data-toggle="collapse" data-target="#collapse_failed_system">+</button><a href="#collapse_failed_system" data-toggle="collapse"><code>systemctl list-units --failed</code></a></p>
<div class="collapse show" id="collapse_failed_system">
<pre class="pre-scrollable" id="failed_system">Data not loaded.</pre>
</div>
<hr>
<p><button type="button" class="btn btn-outline-primary btn-sm mr-2" data-toggle="collapse" data-target="#collapse_overview_system">+</button><a href="#collapse_overview_system" data-toggle="collapse"><code>systemctl status</code></a></p>
<div class="collapse" id="collapse_overview_system">
<pre class="pre-scrollable" id="overview_system">Data not loaded.</pre>
</div>
<hr>
<p><button type="button" class="btn btn-outline-primary btn-sm mr-2" data-toggle="collapse" data-target="#collapse_timers_system">+</button><a href="#collapse_timers_system" data-toggle="collapse"><code>systemctl list-timers --all</code></a></p>
<div class="collapse" id="collapse_timers_system">
<pre class="pre-scrollable" id="timers_system">Data not loaded.</pre>
</div>
<hr>
<p><button type="button" class="btn btn-outline-primary btn-sm mr-2" data-toggle="collapse" data-target="#collapse_journal_system">+</button><a href="#collapse_journal_system" data-toggle="collapse"><code>journalctl -b --lines=20</code></a></p>
<div class="collapse" id="collapse_journal_system">
<pre class="pre-scrollable" id="journal_system">Data not loaded.</pre>
</div>
<hr>
</div>
</div>
<div id="users">
</div>
<div class="modal" id="power_request_modal_forbidden" tabindex="-1" aria-labelledby="power_request_modal_forbidden_header" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="power_request_modal_forbidden_header">Forbidden</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">Sorry, power management is turned off on this instance.</div>
<div class="modal-footer">
<button type="button" class="btn btn-primary" data-dismiss="modal">Close</button>
</div>
</div>
</div>
</div>
<div class="modal" id="reboot_modal_success" tabindex="-1" aria-labelledby="reboot_modal_success_header" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="reboot_modal_success_header">Reboot</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">Done! Please give some time for the machine to come back up.</div>
<div class="modal-footer">
<button type="button" class="btn btn-primary" data-dismiss="modal">OK</button>
</div>
</div>
</div>
</div>
<div class="modal" id="poweroff_modal_success" tabindex="-1" aria-labelledby="poweroff_modal_success_header" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="poweroff_modal_success_header">Shutdown</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">Done! Please give some time for the machine to shut down gracefully.</div>
<div class="modal-footer">
<button type="button" class="btn btn-primary" data-dismiss="modal">OK</button>
</div>
</div>
</div>
</div>
</div>
<footer class="mt-auto py-3 border-top bg-light text-center text-muted small">
<div class="container">
<a href="https://github.com/egor-tensin/linux-status">linux-status</a> — simple Linux server monitoring by <a href="https://tensin.name/">Egor Tensin</a>
</div>
</footer>
<script src="js/jquery.min.js"></script>
<script src="js/bootstrap.bundle.min.js"></script>
<script>
function format_duration(duration) {
let MSECS_IN_MIN = 60 * 1000;
let MSECS_IN_HOUR = 60 * MSECS_IN_MIN;
let MSECS_IN_DAY = 24 * MSECS_IN_HOUR;
let days = Math.floor(duration / MSECS_IN_DAY);
duration -= days * MSECS_IN_DAY;
let hours = Math.floor(duration / MSECS_IN_HOUR);
duration -= hours * MSECS_IN_HOUR;
let mins = Math.floor(duration / MSECS_IN_MIN);
duration -= mins * MSECS_IN_MIN;
if (days > 0) {
let result = `${days}d`;
if (days == 1 && hours > 0)
result += ` ${hours}h`;
return result;
}
if (hours > 0) {
let result = `${hours}h`;
if (hours == 1 && mins > 0)
result += ` ${mins}m`;
return result;
}
return ` ${mins}m`;
}
function dump_fail(data) {
console.log('Response code was: ' + data.status + ' ' + data.statusText);
console.log('Response was:\n' + data.responseText);
}
function get(url, success_callback, fail_callback = dump_fail) {
$.get(url, success_callback).fail(fail_callback);
}
function on_power_request_success(url) {
$('#' + url + '_modal_success').modal();
}
function on_power_request_forbidden() {
$('#power_request_modal_forbidden').modal();
}
function on_power_request_fail(data) {
switch (data.status) {
case 403:
on_power_request_forbidden();
break;
default:
dump_fail(data);
break;
}
}
function power_request(url) {
get(url, function() {
on_power_request_success(url);
}, on_power_request_fail);
}
function reboot() {
power_request('reboot');
}
function poweroff() {
power_request('poweroff');
}
function set_hostname(data) {
$('#hostname').text(data);
$('title').text(data);
}
var thermal_info_max_rows = 2;
function set_thermal(data) {
data = data.slice(0, thermal_info_max_rows);
let body = $('<tbody/>');
data.forEach(function(info) {
let type = info['type'];
let temp = info['temp'].toFixed(2) + '°C';
let row = $('<tr/>')
.append($('<td/>', {'class': 'pr-1'}).text(type))
.append($('<td/>', {'class': 'pl-1 text-right'}).html(temp));
body.append(row);
});
$('#thermal').empty();
$('#thermal').append($('<div/>', {'class': 'table-responsive'})
.append($('<table/>', {'class': 'text-nowrap', 'style': 'width: 100%;'})
.append(body)));
}
function set_top(data) {
$('#top').text(data);
}
function refresh_top() {
get('top', function(data) {
set_top(JSON.parse(data));
});
}
var top_refresh_interval_seconds = 5;
function loop_top() {
setInterval(function() { refresh_top(); }, top_refresh_interval_seconds * 1000);
$('#top_refresh_interval').text(top_refresh_interval_seconds);
}
// Container's State.Status field values are described in the API reference:
//
// https://docs.docker.com/engine/api/v1.43/#tag/Container/operation/ContainerInspect
//
function docker_container_is_ok(info) {
if (info.status == 'restarting' || info.status == 'dead')
return false;
if (info.status == 'exited' && info.exit_code != 0)
return false;
if (info.health == 'unhealthy')
return false;
return true;
}
function docker_container_format_status(info) {
let result = info.status;
result = result.charAt(0).toUpperCase() + result.slice(1);
if (info.status == 'exited' && info.exit_code != 0)
result += ` (${info.exit_code})`;
if (info.status == 'running') {
let since = new Date(info.started_at);
result = `Up ${format_duration(Date.now() - since)}`;
if (info.health == 'unhealthy')
result = `${result} (unhealthy)`;
}
return result;
}
function docker_fill_data(data) {
data.forEach(function(info) {
info.ok = docker_container_is_ok(info);
info.pretty_status = docker_container_format_status(info);
});
}
function make_docker_table_header() {
return $('<thead/>')
.append($('<tr/>')
.append($('<th/>'))
.append($('<th/>').text('Container'))
.append($('<th/>').text('Image'))
.append($('<th/>').text('Status')));
}
function make_docker_table_row(info) {
let success_mark = $('<span/>', {'class': 'text-success'}).html('✔');
let failure_mark = $('<span/>', {'class': 'text-danger'}).html('✘');
let success_class = 'table-light';
let failure_class = 'table-warning';
let mark = success_mark;
let _class = success_class;
if (!info.ok) {
mark = failure_mark;
_class = failure_class;
}
return $('<tr/>', {'class': _class})
.append($('<td/>').html(mark))
.append($('<td/>').append($('<code/>', {'class': 'text-reset'}).text(info.name)))
.append($('<td/>').append($('<code/>', {'class': 'text-reset'}).text(info.image)))
.append($('<td/>').text(info.pretty_status));
}
function make_docker_table(data) {
let body = $('<tbody/>');
data.sort(function(a, b) {
return a.name.localeCompare(b.name);
});
data.forEach(function(info) {
body.append(make_docker_table_row(info));
});
let table = $('<div/>', {'class': 'table-responsive'})
.append($('<table/>', {'class': 'table table-hover table-sm text-nowrap mb-0'})
.append(make_docker_table_header())
.append(body));
return table;
}
function set_docker(data) {
docker_fill_data(data);
$('#docker').empty();
$('#docker').append(make_docker_table(data));
data.forEach(function(info) {
if (!info.ok)
$('#collapse_docker').addClass('show');
});
}
function set_system(data) {
if ('docker' in data) {
set_docker(data['docker']);
}
if ('failed' in data) {
$('#failed_system').text(data['failed']);
}
if ('overview' in data) {
$('#overview_system').text(data['overview']);
}
if ('timers' in data) {
$('#timers_system').text(data['timers']);
}
if ('journal' in data) {
$('#journal_system').text(data['journal']);
}
}
var users = [];
function create_user_block(name, lbl, cmd) {
let pre_id = `${lbl}_user_${name}`;
let collapse_id = `collapse_${pre_id}`;
let button_params = {
'class': 'btn btn-outline-primary btn-sm mr-2',
'data-toggle': 'collapse',
'data-target': '#' + collapse_id
};
let a_params = {
href: '#' + collapse_id,
'data-toggle': 'collapse'
};
return $('<div/>')
.append($('<p/>')
.append($('<button/>', button_params).text('+'))
.append($('<a/>', a_params)
.append($('<code/>').text(cmd))))
.append($('<div/>', {'class': 'collapse', id: collapse_id})
.append($('<pre/>', {'class': 'pre-scrollable', id: pre_id})
.text('Data not loaded.')))
.append($('<hr/>'));
}
function add_user(name) {
if (users.includes(name)) {
return;
}
let container = $('<div/>', {'class': 'row', id: 'user_' + name})
.append($('<div/>', {'class': 'col'})
.append($('<h2/>').text(name))
.append($('<hr/>'))
.append(create_user_block(name, 'failed', 'systemctl list-units --failed'))
.append(create_user_block(name, 'overview', 'systemctl status'))
.append(create_user_block(name, 'timers', 'systemctl list-timers --all'))
.append(create_user_block(name, 'journal', 'journalctl -b --lines=20')));
$('#users').append(container);
$('#collapse_failed_user_' + name).addClass('show');
users.push(name);
}
function set_user(name, data) {
add_user(name);
if ('failed' in data) {
$('#failed_user_' + name).text(data['failed']);
}
if ('overview' in data) {
$('#overview_user_' + name).text(data['overview']);
}
if ('timers' in data) {
$('#timers_user_' + name).text(data['timers']);
}
if ('journal' in data) {
$('#journal_user_' + name).text(data['journal']);
}
}
function set_users(data) {
users.forEach(function(name) {
if (!(name in data)) {
$('#user_' + name).remove();
let i = users.indexOf(name);
if (i > -1) {
users.splice(i, 1);
}
}
});
Object.keys(data).forEach(function(name) {
set_user(name, data[name]);
});
}
function refresh_status() {
get('status', function(data) {
data = JSON.parse(data);
set_hostname(data['hostname']);
set_thermal(data['thermal']);
set_system(data['system']);
set_users(data['user']);
});
}
var status_refresh_interval_seconds = 30;
function loop_status() {
setInterval(function() {
refresh_status();
}, status_refresh_interval_seconds * 1000);
$('#status_refresh_interval').text(status_refresh_interval_seconds);
}
function main() {
refresh_top();
refresh_status();
loop_top();
loop_status();
}
$(function() {
main();
});
</script>
</body>
</html>
|
