1 00:00:02,120 --> 00:00:03,230 Now, first of all, 2 00:00:03,230 --> 00:00:06,000 as always ensure that you've got your minikube up 3 00:00:06,000 --> 00:00:08,920 and running with minikube status, 4 00:00:08,920 --> 00:00:11,270 and if it would not be up and running 5 00:00:11,270 --> 00:00:15,260 start it with minikube start and pick a driver, 6 00:00:15,260 --> 00:00:16,239 and then of course, 7 00:00:16,239 --> 00:00:19,220 make sure you got no ongoing deployment steer 8 00:00:19,220 --> 00:00:21,830 with kube control gets deployments, 9 00:00:21,830 --> 00:00:24,530 maybe also check that you got no services, 10 00:00:24,530 --> 00:00:26,740 except for that default service. 11 00:00:26,740 --> 00:00:28,533 And you should be good to go. 12 00:00:29,480 --> 00:00:33,410 And with that let's now move this application, 13 00:00:33,410 --> 00:00:37,110 these different containers onto kubernetes. 14 00:00:37,110 --> 00:00:39,460 And we're going to get there step by step. 15 00:00:39,460 --> 00:00:43,540 And I wanna start with just the users-api here. 16 00:00:43,540 --> 00:00:45,700 I'll start with just that 17 00:00:45,700 --> 00:00:46,830 because first of all, 18 00:00:46,830 --> 00:00:49,740 wanna dive into a concept we already learned about 19 00:00:49,740 --> 00:00:52,300 the kubernetes services. 20 00:00:52,300 --> 00:00:54,820 Now to start with the users-api, 21 00:00:54,820 --> 00:00:58,250 we should first of all, go to the users-app.js file 22 00:00:58,250 --> 00:01:00,520 and tweak it a little bit, 23 00:01:00,520 --> 00:01:01,900 because in there I am, 24 00:01:01,900 --> 00:01:06,600 of course already sending requests to this off service. 25 00:01:06,600 --> 00:01:11,070 And initially, if we start with just a user's-api, 26 00:01:11,070 --> 00:01:12,363 this will not work. 27 00:01:13,270 --> 00:01:16,900 Therefore take these lines of code 28 00:01:16,900 --> 00:01:19,550 where we use access to send the request 29 00:01:19,550 --> 00:01:22,320 to this off service and copy them, 30 00:01:22,320 --> 00:01:25,460 then comments them out and here 31 00:01:25,460 --> 00:01:29,840 In the signup post functions so to say, 32 00:01:29,840 --> 00:01:34,840 replace this call to access get with a dummy string. 33 00:01:37,190 --> 00:01:40,650 So simply some dummy text instead of the real response 34 00:01:40,650 --> 00:01:42,240 from making that request. 35 00:01:42,240 --> 00:01:45,040 Because for the moment we don't wanna make that request. 36 00:01:46,210 --> 00:01:49,760 And in this login route functioned here, 37 00:01:49,760 --> 00:01:51,790 we wanna do something similar. 38 00:01:51,790 --> 00:01:55,420 Copy this code, where we send our access request 39 00:01:55,420 --> 00:01:59,800 and comment it out and then replace the response here, 40 00:01:59,800 --> 00:02:01,990 not with a string, but with an object, 41 00:02:01,990 --> 00:02:05,450 an object where you should add a status field 42 00:02:05,450 --> 00:02:09,960 with a code of 200, because we're checking for that here. 43 00:02:09,960 --> 00:02:12,630 And you wanna add a data field 44 00:02:12,630 --> 00:02:14,880 with a number nested object in there 45 00:02:14,880 --> 00:02:18,573 where we have a token field where you can store some string. 46 00:02:20,370 --> 00:02:23,800 These are just minor tweaks, which will reverse later, 47 00:02:23,800 --> 00:02:25,410 but which i wanna use for now 48 00:02:25,410 --> 00:02:27,810 to make this user's app independent 49 00:02:27,810 --> 00:02:30,653 from any other containers for this moment. 50 00:02:32,700 --> 00:02:35,440 So with all of that, we should be fine. 51 00:02:35,440 --> 00:02:37,870 And now of course, we wanna to build our image 52 00:02:37,870 --> 00:02:39,530 and move it to Docker hub 53 00:02:39,530 --> 00:02:42,760 so that we can use it on a kubernetes cluster. 54 00:02:42,760 --> 00:02:44,840 So as always on Docker hub, 55 00:02:44,840 --> 00:02:47,300 make sure you create a new repository 56 00:02:47,300 --> 00:02:51,393 and all named kub-demo users. 57 00:02:52,890 --> 00:02:57,240 The name is up to you, of course, create this repository 58 00:02:57,240 --> 00:02:59,090 and then we need to create an image 59 00:02:59,090 --> 00:03:02,220 off that name and push it. 60 00:03:02,220 --> 00:03:07,220 So therefore I will now go to my terminal here 61 00:03:07,750 --> 00:03:11,790 and move into that user's-api folder 62 00:03:11,790 --> 00:03:13,920 with the cd command 63 00:03:13,920 --> 00:03:16,610 and then run docker build dot 64 00:03:16,610 --> 00:03:19,770 and with dash t give it a name of academind slash 65 00:03:19,770 --> 00:03:21,760 or in you case of course, 66 00:03:21,760 --> 00:03:25,410 your Docker hub account name slash, 67 00:03:25,410 --> 00:03:28,410 and then the name you picked for this repository 68 00:03:28,410 --> 00:03:31,203 and then a wide space between that name and the dot. 69 00:03:32,970 --> 00:03:37,970 Now with that we built this image for the user's-api 70 00:03:38,150 --> 00:03:42,270 and once it was built, we of course push it by, 71 00:03:42,270 --> 00:03:45,050 well, just pushing this image name, 72 00:03:45,050 --> 00:03:48,200 like this, and now it's pushed to Docker hub 73 00:03:48,200 --> 00:03:50,363 to this newly created repository. 74 00:03:53,390 --> 00:03:55,790 Once it was pushed, we are of course, 75 00:03:55,790 --> 00:03:58,540 ready to get started with Kubernetes. 76 00:03:58,540 --> 00:04:01,500 And for that, I will actually create a new sub folder here, 77 00:04:01,500 --> 00:04:04,120 kubernetes, which you don't have to create, 78 00:04:04,120 --> 00:04:06,910 but where I wanna store all my yaml files 79 00:04:06,910 --> 00:04:09,030 to have them all in one place. 80 00:04:09,030 --> 00:04:13,580 And in there I'll add my users-deployment.yaml file, 81 00:04:13,580 --> 00:04:16,029 which as the names suggests should set up 82 00:04:16,029 --> 00:04:18,762 that deployment for the users container. 83 00:04:19,709 --> 00:04:20,543 Now, as you learn, 84 00:04:20,543 --> 00:04:23,520 you could merge all your Kubernetes configuration 85 00:04:23,520 --> 00:04:26,660 in one big yaml file, but to keep it easier 86 00:04:26,660 --> 00:04:31,050 to manage and find i will use multiple files here. 87 00:04:31,050 --> 00:04:34,890 So in here as always, we need to specify an apiVersion, 88 00:04:34,890 --> 00:04:37,000 which should be apps/v1 89 00:04:37,000 --> 00:04:41,770 for a deployment, the kind is deployment of course. 90 00:04:41,770 --> 00:04:43,770 And then we can add metadata 91 00:04:43,770 --> 00:04:45,640 where we give this deployment a name, 92 00:04:45,640 --> 00:04:48,253 for example, user-deployment. 93 00:04:49,780 --> 00:04:53,290 with that done, we need to set up a specification 94 00:04:53,290 --> 00:04:55,750 and that's the specification for the deployment, 95 00:04:55,750 --> 00:04:57,290 as you learned. 96 00:04:57,290 --> 00:05:00,210 And here I wanna deploy one replica. 97 00:05:00,210 --> 00:05:04,650 So only one instance of a pod for a given container, 98 00:05:04,650 --> 00:05:06,860 and then set up the pod template 99 00:05:06,860 --> 00:05:11,800 with that template option, here for this pod template, 100 00:05:11,800 --> 00:05:14,750 we wanna add metadata and give it a label. 101 00:05:14,750 --> 00:05:17,520 For example, app users, 102 00:05:17,520 --> 00:05:20,030 as always, the label is up to you 103 00:05:20,030 --> 00:05:23,730 both the key name as well as the value here. 104 00:05:23,730 --> 00:05:26,320 And with that added, we can already add a selector 105 00:05:28,560 --> 00:05:32,460 and on this selector here we can use match labels 106 00:05:32,460 --> 00:05:35,000 and then match this app users label. 107 00:05:35,000 --> 00:05:36,890 We just add it. 108 00:05:36,890 --> 00:05:38,390 This is how we set up a deployment. 109 00:05:38,390 --> 00:05:40,970 And of course that's nothing new. 110 00:05:40,970 --> 00:05:44,280 Next, we set up the specification for this part 111 00:05:44,280 --> 00:05:47,880 and there , I wanna add my containers. 112 00:05:47,880 --> 00:05:50,430 And for the moment it's just one container, 113 00:05:50,430 --> 00:05:53,360 hence one dash here with a name of, 114 00:05:53,360 --> 00:05:56,280 let's say, users, of course, 115 00:05:56,280 --> 00:05:58,360 this name is up to you. 116 00:05:58,360 --> 00:06:03,360 Using an image which is named academind/kub-demo-users 117 00:06:04,090 --> 00:06:04,923 in my case. 118 00:06:04,923 --> 00:06:07,220 So does image, we just pushed, 119 00:06:07,220 --> 00:06:11,290 of course, make sure you use your image name there. 120 00:06:11,290 --> 00:06:12,633 And that is it. 121 00:06:13,610 --> 00:06:17,820 With that, I'm setting up this deployment 122 00:06:17,820 --> 00:06:20,663 and now of course we can apply it, 123 00:06:22,290 --> 00:06:24,990 by running kube control apply. 124 00:06:24,990 --> 00:06:27,480 And now of course you wanna apply it to our cluster 125 00:06:27,480 --> 00:06:30,340 with cube control apply users dash, 126 00:06:30,340 --> 00:06:33,210 deployment dot yaml as a file name. 127 00:06:33,210 --> 00:06:35,010 And I'm in the wrong folder. 128 00:06:35,010 --> 00:06:38,250 Of course, we need to see the out of the user's-api first 129 00:06:38,250 --> 00:06:41,460 and then cd into the kubernetes folder in order 130 00:06:41,460 --> 00:06:43,550 to be able to run this command like this 131 00:06:43,550 --> 00:06:45,503 otherwise this file wouldn't be found. 132 00:06:46,750 --> 00:06:49,660 Now this deployment is created as always, 133 00:06:49,660 --> 00:06:51,280 this of course means that eventually 134 00:06:51,280 --> 00:06:53,550 we'll have one pod up and running 135 00:06:53,550 --> 00:06:55,523 with that user's container in it.