1 00:00:05,490 --> 00:00:06,060 All right. 2 00:00:06,060 --> 00:00:10,190 We are done with creation of the configuration file for deployment. 3 00:00:10,200 --> 00:00:12,360 So here is deployment. 4 00:00:12,630 --> 00:00:18,330 And let's now apply this configuration file using declarative approach. 5 00:00:18,390 --> 00:00:23,110 Creating such file in place, you will no longer require to enter command cubes. 6 00:00:23,160 --> 00:00:24,990 It'll create deployment. 7 00:00:24,990 --> 00:00:27,140 You will just enter command cubes. 8 00:00:27,150 --> 00:00:28,260 It'll apply. 9 00:00:28,800 --> 00:00:29,790 Let's do that. 10 00:00:29,820 --> 00:00:31,020 Let's open up. 11 00:00:31,020 --> 00:00:36,600 Embedded terminal here and now I am still inside of the k8s web hello folder. 12 00:00:36,630 --> 00:00:42,240 Let me go out of this folder where this deployment yaml file is located. 13 00:00:42,240 --> 00:00:43,590 Let's list files here. 14 00:00:43,590 --> 00:00:46,770 So here is deployment yaml configuration file. 15 00:00:46,770 --> 00:00:49,650 And here let's enter command cube still. 16 00:00:51,410 --> 00:00:56,930 Apply this f stands for file and here will be name of the file. 17 00:00:56,960 --> 00:00:59,300 Deployment dot yaml. 18 00:00:59,720 --> 00:01:00,830 Simple as that. 19 00:01:02,790 --> 00:01:06,120 File was applied and deployment was created. 20 00:01:06,150 --> 00:01:07,230 Let's check that. 21 00:01:07,440 --> 00:01:09,480 By the way, here, I don't have alias. 22 00:01:09,480 --> 00:01:13,350 Let's add quickly, alias, alias, K Cube, CTL. 23 00:01:14,090 --> 00:01:21,320 So they get deployments and now there was K eight as Webb hello deployment. 24 00:01:22,580 --> 00:01:25,130 And there was a single port in this deployment. 25 00:01:25,610 --> 00:01:26,540 Get boats. 26 00:01:26,930 --> 00:01:29,510 Here is the spot which is up and running. 27 00:01:30,350 --> 00:01:30,860 Wait. 28 00:01:30,860 --> 00:01:40,070 But how we could now scale this deployment and increase quantity of the replicas very easily by modification 29 00:01:40,070 --> 00:01:42,080 of this specification file. 30 00:01:42,230 --> 00:01:43,100 But how? 31 00:01:43,100 --> 00:01:46,700 We could increase quantity of the replicas here? 32 00:01:46,700 --> 00:01:49,310 At the moment, we don't see any numbers. 33 00:01:49,340 --> 00:01:55,410 Let's try to find out that using documentation, I assume that I don't know how to change that. 34 00:01:55,430 --> 00:02:03,680 So let's go to Workload Resources, check deployment and scroll down here. 35 00:02:03,680 --> 00:02:07,020 So spec status, metadata, kind. 36 00:02:07,040 --> 00:02:08,630 No options here. 37 00:02:08,660 --> 00:02:11,150 Let's click on deployment spec. 38 00:02:12,150 --> 00:02:20,040 Here was selected template replicas, number of desired ports and thus that option which you need to 39 00:02:20,040 --> 00:02:25,730 utilize if you want to modify quantity of the replicas from default number one. 40 00:02:25,740 --> 00:02:33,540 So here is default number one to any other number and you have to add replica key in the deployment 41 00:02:33,540 --> 00:02:34,200 spec. 42 00:02:34,290 --> 00:02:36,630 So let's go to deployment spec. 43 00:02:36,630 --> 00:02:37,920 So here we are spec. 44 00:02:38,190 --> 00:02:42,180 And here let's add new key replicas. 45 00:02:43,560 --> 00:02:46,260 And this value will do, let's say number five. 46 00:02:46,290 --> 00:02:50,490 If I go back, I could read that its value is integer 32. 47 00:02:51,090 --> 00:02:55,050 So you don't need to write here file like that, right? 48 00:02:55,050 --> 00:03:03,410 As a number, let's save changes and let's apply this deployment YAML configuration file again using 49 00:03:03,420 --> 00:03:04,650 same command cube. 50 00:03:04,650 --> 00:03:07,530 Still apply this f deployment yaml. 51 00:03:07,890 --> 00:03:11,850 Let's go ahead configured k get port. 52 00:03:12,510 --> 00:03:23,160 And now I see that four new containers are being created and now my deployment has five different ports. 53 00:03:23,160 --> 00:03:25,110 Four of them are already ready. 54 00:03:27,060 --> 00:03:28,620 Now five are running. 55 00:03:29,280 --> 00:03:37,650 That's how we were able very easily modify our deployment simply by modification of the deployment YAML 56 00:03:37,650 --> 00:03:38,850 configuration file. 57 00:03:39,210 --> 00:03:41,400 But of course now there are no services. 58 00:03:41,450 --> 00:03:42,650 K get SVC. 59 00:03:43,500 --> 00:03:47,220 Let's create new service using similar approach.