1 00:00:04,140 --> 00:00:10,320 We just added two additional services to our Docker compose file, namely Mongo and Mongo Express. 2 00:00:10,350 --> 00:00:18,570 Mongo image contains actual MongoDB daemon with Mongo CLI utility and Mongo Express is graphical user 3 00:00:18,570 --> 00:00:24,900 interface for Mongo and Mongo Express is written using NodeJS and express module. 4 00:00:25,140 --> 00:00:32,159 So let's now go ahead and bring up all those services and for that we will utilize as usual Docker compose 5 00:00:32,189 --> 00:00:40,410 up command also from Mongo Express container, we expose internal port 8081 to external port 8081 on 6 00:00:40,410 --> 00:00:41,550 your computer. 7 00:00:41,550 --> 00:00:47,910 And that means that we will be able to connect to Mongo Express application using any web browser using 8 00:00:47,940 --> 00:00:50,880 address localhost colon 8081. 9 00:00:51,180 --> 00:00:58,920 Also, Mongo Express is able to connect to Mongo using its host name Mongo and corresponding credentials 10 00:00:58,920 --> 00:01:05,740 for admin user of the database root is username for such user and password is its password. 11 00:01:06,340 --> 00:01:06,970 All right. 12 00:01:06,970 --> 00:01:10,540 Let's now go ahead and bring up those services. 13 00:01:10,570 --> 00:01:16,660 Let's go to the terminal where I'm already running such containers as API and front end. 14 00:01:16,690 --> 00:01:17,800 Here they are. 15 00:01:17,950 --> 00:01:21,790 And let's simply try to enter Command Docker compose up. 16 00:01:22,060 --> 00:01:28,120 I will omit for now the option D stands for detached because I want to show you actual logs that will 17 00:01:28,120 --> 00:01:31,330 be generated by Mongo and Mongo express containers. 18 00:01:31,330 --> 00:01:31,900 That's why. 19 00:01:31,930 --> 00:01:33,160 Let's simply enter Docker. 20 00:01:33,160 --> 00:01:34,750 Compose up like that. 21 00:01:34,780 --> 00:01:35,830 Let's go ahead. 22 00:01:37,260 --> 00:01:43,950 Looker starts by pulling mongo image from Docker hub as usually it consists of multiple layers and here 23 00:01:43,950 --> 00:01:47,310 you see that separate layers are downloaded separately. 24 00:01:47,340 --> 00:01:50,160 Let's wait a bit until download process is complete. 25 00:01:51,380 --> 00:01:54,080 Mongo image was successfully downloaded here. 26 00:01:54,200 --> 00:01:54,380 See? 27 00:01:54,410 --> 00:01:56,660 Status informational message about that. 28 00:01:56,660 --> 00:02:04,070 And now docker compose is pulling mongo express and similarly it consists of multiple layers and all 29 00:02:04,070 --> 00:02:07,430 those layers are downloaded and afterwards extracted. 30 00:02:08,180 --> 00:02:11,090 Mongo Express image was downloaded as well. 31 00:02:11,090 --> 00:02:16,040 And you see also that front end and containers are up to date. 32 00:02:16,040 --> 00:02:21,500 There is no need to recreate them, but it is necessary to create new container for mongo. 33 00:02:21,530 --> 00:02:28,580 Here I see that new container was created and also new container for Mongo Express was created as well. 34 00:02:28,580 --> 00:02:33,410 And afterwards I see actual logs from mongo express container. 35 00:02:33,410 --> 00:02:34,270 Here they are. 36 00:02:34,280 --> 00:02:36,770 And from mongo container for instance. 37 00:02:36,770 --> 00:02:39,950 Here, let me scroll to the very end of this output. 38 00:02:39,950 --> 00:02:46,730 And for instance here I see such message as admin database connected that comes from mongo express container 39 00:02:46,730 --> 00:02:48,680 and also a bit up. 40 00:02:48,680 --> 00:02:50,600 I should see database connected message. 41 00:02:50,600 --> 00:02:51,890 And yes, here it is. 42 00:02:51,920 --> 00:02:56,420 It also comes from mongo express on mongo container. 43 00:02:56,420 --> 00:03:03,410 I see such message as successful authentication and that means that mongo express successfully authenticated 44 00:03:03,410 --> 00:03:05,000 at mongo connection. 45 00:03:05,000 --> 00:03:12,170 Accepted message also comes from mongo container and it seems that now connectivity between mongo express 46 00:03:12,170 --> 00:03:14,600 and Mongo is established. 47 00:03:14,600 --> 00:03:22,490 And notice here that in client section Mongo shows us IP address of the Mongo express container. 48 00:03:22,520 --> 00:03:24,200 That's what I told you before. 49 00:03:24,230 --> 00:03:30,770 All containers communicate with each other using IP addresses and those IP addresses are assigned by 50 00:03:30,800 --> 00:03:32,210 Docker internally. 51 00:03:32,480 --> 00:03:33,200 All right. 52 00:03:33,200 --> 00:03:40,250 Let me actually bring down now all those containers in order to avoid all the logs here and bring up 53 00:03:40,250 --> 00:03:48,560 them in detached mode, Let's press Ctrl C here, stopping all four containers, Mongo Express, Mongo 54 00:03:48,560 --> 00:03:52,040 front end and API containers were stopped. 55 00:03:52,070 --> 00:03:54,080 Now there are no containers running. 56 00:03:54,080 --> 00:03:57,380 And now let's bring them up again using command docker. 57 00:03:57,380 --> 00:04:00,800 Compose up with option D detached. 58 00:04:01,800 --> 00:04:02,580 Let's do that. 59 00:04:02,700 --> 00:04:08,970 Now, there is no need to pull new images for Mongo and Mongo Express because they are already present 60 00:04:08,970 --> 00:04:10,350 locally in Docker cache. 61 00:04:10,380 --> 00:04:16,980 That's why it makes sense only to start new containers and that's what Docker does here on those lines. 62 00:04:17,010 --> 00:04:19,050 Starting all four containers. 63 00:04:19,230 --> 00:04:21,149 Containers were started. 64 00:04:21,180 --> 00:04:22,220 Here they are. 65 00:04:22,230 --> 00:04:25,220 And now let's actually explore those containers. 66 00:04:25,230 --> 00:04:30,870 And first, after the small pause, let me explain to you how to get information about containers using 67 00:04:30,870 --> 00:04:32,980 Docker desktop dashboard. 68 00:04:33,000 --> 00:04:33,900 This one. 69 00:04:34,080 --> 00:04:35,910 I'll see you guys just in a moment.