This repository has been archived by the owner on Aug 7, 2018. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 108
/
5-1.html
360 lines (301 loc) · 11.8 KB
/
5-1.html
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
<!DOCTYPE html>
<!--[if IE 9]><html class="lt-ie10" lang="en"> <![endif]-->
<!--[if gt IE 8]><!--> <html lang="en"> <!--<![endif]-->
<html lang="en">
<head>
<meta charset="utf-8">
<title>Kubernetes Bootcamp</title>
<meta http-equiv="refresh" content="0;URL='https://kubernetes.io/docs/tutorials/kubernetes-basics/'" />
<meta name="description" content="K8S">
<meta name="keywords" content="K8S Keywords">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta property="og:title" content="K8S - Bootcamp Overview">
<meta property="og:type" content="website">
<meta property="og:url" content="index.html">
<meta property="og:image" content="./public/uploads/soc_index.jpg">
<meta property="og:description" content="K8S">
<meta name="twitter:card" content="summary">
<meta name="twitter:site" content="@empty">
<meta name="twitter:title" content="K8S - Bootcamp Overview">
<meta name="twitter:description" content="K8S">
<meta name="twitter:creator" content="@k8s">
<meta name="twitter:image:src" content="./public/uploads/soc_index.jpg">
<meta name="twitter:domain" content="index.html">
<meta itemprop="name" content="K8S - Bootcamp Overview">
<meta itemprop="description" content="K8S">
<meta itemprop="image" content="./public/uploads/soc_index.jpg">
<link rel="manifest" href="./manifest.json?v=1470121828969">
<link rel="mask-icon" href="./public/images/safari-pinned-tab.svg?v=1470121828969" color="#A2B2F2">
<meta name="msapplication-TileColor" content="#A2B2F2">
<meta name="theme-color" content="#A2B2F2">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
<meta name="apple-touch-fullscreen" content="yes">
<link href='https://fonts.googleapis.com/css?family=Roboto:400,500,700,900,300,100' rel='stylesheet' type='text/css'>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
<link href="./public/css/swiper.min.css" rel="stylesheet">
<link href="./public/css/styles.css" rel="stylesheet">
<!--<script src="./public/js/jquery-3.1.0.min.js"></script>-->
<script src="./public/js/jquery-1.12.1.min.js"></script>
<script src="./public/js/bootstrap.min.js"></script>
<script src="./public/js/swiper.jquery.min.js"></script>
<script src='./public/js/ractive.js'></script>
<script src="./public/js/common.js"></script>
</head>
<body>
<div class="layout" id="top">
<div style="position: fixed;background: #ffff94;width: 100%;z-index: 1000;text-align: center;font-size: 1.5rem;font-weight: bold;">
This content has moved to <a href="https://kubernetes.io/docs/tutorials/kubernetes-basics/">https://kubernetes.io/docs/tutorials/kubernetes-basics/</a>
</div>
<aside class="sidebar">
<div class="sidebar__inner">
<header class="header">
<a class="header__site" href="index.html">
<img class="header__logo" src="./public/images/logo.svg?v=1470121828969" alt="">
<img class="header__logo-mobile" src="./public/images/logo_2.svg?v=1470121828969" alt="">
<span class="header__name">Bootcamp</span>
</a>
<div class="header__sider">
<div class="header__burger"></div>
</div>
</header>
<ul class="nav">
<li class="marked">
<a href="index.html">
<span class="sidebar__ico"></span>
Bootcamp Overview
</a>
</li>
<li class="marked">
<a href="1-0.html">
<span class="sidebar__ico"></span>
1. Create a cluster
</a>
</li>
<li class="marked">
<a href="2-0.html">
<span class="sidebar__ico"></span>
2. Deploy an app
</a>
</li>
<li class="marked">
<a href="3-0.html">
<span class="sidebar__ico"></span>
3. Explore your app
</a>
</li>
<li class="marked">
<a href="4-0.html">
<span class="sidebar__ico"></span>
4. Expose your app publicly
</a>
</li>
<li class="sidebar__subnav open marked">
<a href="5-0.html">
<span class="sidebar__ico"></span>
5. Scale up your app
</a>
<ul class="nav">
<li class="marked active">
<a href="5-1.html">
<span class="sidebar__ico"></span>
Running multiple instances of an app
</a>
</li>
<li>
<a href="5-2.html">
<span class="sidebar__ico"></span>
Try interactively
</a>
</li>
<li>
<a href="5-3.html">
<span class="sidebar__ico"></span>
Quiz
</a>
</li>
</ul>
</li>
<li class="sidebar__subnav">
<a href="6-0.html">
<span class="sidebar__ico"></span>
6. Update your app
</a>
</li>
</ul>
<!-- header start -->
<footer class="footer" role="contentinfo">
<div class="footer__content">
<ul class="footer__social">
<li class="footer__social-item">
<a class="footer__network" href="https://twitter.com/kubernetesio" target="_blank">
<i class="fa fa-twitter" aria-hidden="true"></i>
</a>
</li>
<li class="footer__social-item">
<a class="footer__network" href="https://github.com/kubernetes/kubernetes" target="_blank">
<i class="fa fa-github" aria-hidden="true"></i>
</a>
</li>
<li class="footer__social-item">
<a class="footer__network" href="https://groups.google.com/forum/#!forum/google-containers" target="_blank">
<i class="fa fa-envelope" aria-hidden="true"></i>
</a>
</li>
</ul>
<ul class="footer__menu">
<li class="footer__item">
<a class="footer__link" href="http://kubernetes.io/">Kubernetes</a>
</li>
<li class="footer__item">
<a class="footer__link" href="http://kubernetes.io/docs/">View Documentation</a>
</li>
<li class="footer__item">
<a class="footer__link" href="https://github.com/kubernetes/kubernetes">Github</a>
</li>
</ul>
<div class="footer__copyright">
<b>© 2016 Kubernetes</b><br>
developed and designed by<br>
<a href="http://container-solutions.com/" target="_blank">Container Solutions</a> & <a href="http://www.remembertoplay.co" target="_blank">Remember to Play</a>
</div>
</div>
</footer>
<!-- header finish --> <a class="scrolltop" href="#top"></a>
</div>
</aside>
<main class="content">
<div class="content__sider">
<a class="content__trigger" href="#" role="button"></a>
</div>
<div class="row">
<div class="col-md-12">
<ol class="breadcrumb">
<li class="active"><a href="5-0.html">Module 5 | Scale up your app</a></li>
</ol>
</div>
</div>
<h1>Running multiple instances of an app</h1>
<div class="row">
<div class="col-md-12 text-left">
<a class="btn btn-default" href="5-0.html" role="button"><span class="btn__prev">‹</span> Back</a>
</div>
</div>
<br>
<br>
<div class="row">
<div class="col-md-8">
<p>In the previous modules we created a <a href="http://kubernetes.io/docs/user-guide/deployments/"> Deployment</a>, and then exposed it publicly via a <a href="http://kubernetes.io/docs/user-guide/services/"> Service </a>. The Deployment created only one Pod for running our application. When traffic increases, we will need to scale the application to keep up with user demand.</p>
<p><b>Scaling</b> is accomplished by changing the number of replicas in a Deployment</p>
</div>
<div class="col-md-4">
<div class="content__box content__box_lined">
<h3>Summary:</h3>
<ul>
<li>Scaling a Deployment</li>
</ul>
</div>
<div class="content__box content__box_fill">
<p><i> You can create from the start a Deployment with multiple instances using the --replicas parameter for the kubectl run command </i></p>
</div>
</div>
</div>
<br>
<div class="row">
<div class="col-md-8">
<h2 style="color: #3771e3;">Scaling overview</h2>
</div>
</div>
<div class="row">
<div class="col-md-1"></div>
<div class="col-md-8">
<div id="myCarousel" class="carousel" data-ride="carousel" data-interval="3000">
<ol class="carousel-indicators">
<li data-target="#myCarousel" data-slide-to="0" class="active"></li>
<li data-target="#myCarousel" data-slide-to="1"></li>
</ol>
<div class="carousel-inner" role="listbox">
<div class="item active">
<img src="./public/images/module_05_scaling1.svg">
</div>
<div class="item">
<img src="./public/images/module_05_scaling2.svg">
</div>
</div>
<a class="left carousel-control" href="#myCarousel" role="button" data-slide="prev">
<span class="sr-only ">Previous</span>
</a>
<a class="right carousel-control" href="#myCarousel" role="button" data-slide="next">
<span class="sr-only">Next</span>
</a>
</div>
</div>
</div>
<br>
<div class="row">
<div class="col-md-8">
<p>Scaling up a Deployment will ensure new Pods are created and scheduled to Nodes with available resources. Scaling down will reduce the number of Pods to the new desired state. Kubernetes also supports <a href="http://kubernetes.io/docs/user-guide/horizontal-pod-autoscaling/"> autoscaling </a> of Pods, but it is outside of the scope of this tutorial. Scaling to zero is also possible, and it will terminate all Pods of the specified Deployment.</p>
<p>Running multiple instances of an application will require a way to distribute the traffic to all of them. Services have an integrated load-balancer that will distribute network traffic to all Pods of an exposed Deployment. Services will monitor continuously the running Pods using endpoints, to ensure the traffic is sent only to available Pods.</p>
</div>
<div class="col-md-4">
<div class="content__box content__box_fill">
<p><i>Scaling is accomplished by changing the number of replicas in a Deployment.</i></p>
</div>
</div>
</div>
<br>
<div class="row">
<div class="col-md-8">
<p> Once you have multiple instances of an Application running, you would be able to do Rolling updates without downtime. We’ll cover that in the next module. Now, let’s go to the online terminal and scale our application.</p>
</div>
</div>
<br>
<div class="row">
<div class="col-md-12">
<a class="btn btn-lg btn-success" href="5-2.html" role="button">Start Interactive Tutorial <span class="btn__next">›</span></a>
</div>
</div>
</main>
<!-- header start -->
<footer class="footer" role="contentinfo">
<div class="footer__content">
<ul class="footer__social">
<li class="footer__social-item">
<a class="footer__network" href="https://twitter.com/kubernetesio" target="_blank">
<i class="fa fa-twitter" aria-hidden="true"></i>
</a>
</li>
<li class="footer__social-item">
<a class="footer__network" href="https://github.com/kubernetes/kubernetes" target="_blank">
<i class="fa fa-github" aria-hidden="true"></i>
</a>
</li>
<li class="footer__social-item">
<a class="footer__network" href="https://groups.google.com/forum/#!forum/google-containers" target="_blank">
<i class="fa fa-envelope" aria-hidden="true"></i>
</a>
</li>
</ul>
<ul class="footer__menu">
<li class="footer__item">
<a class="footer__link" href="http://kubernetes.io/">Kubernetes</a>
</li>
<li class="footer__item">
<a class="footer__link" href="http://kubernetes.io/docs/">View Documentation</a>
</li>
<li class="footer__item">
<a class="footer__link" href="https://github.com/kubernetes/kubernetes">Github</a>
</li>
</ul>
<div class="footer__copyright">
<b>© 2016 Kubernetes</b><br>
developed and designed by<br>
<a href="http://container-solutions.com/" target="_blank">Container Solutions</a> & <a href="http://www.remembertoplay.co" target="_blank">Remember to Play</a>
</div>
</div>
</footer>
<!-- header finish --> <a class="scrolltop" href="#top"></a>
</div>
</body>
</html>