1 00:00:04,210 --> 00:00:09,260 Now you know what happens when you create new custom network and how to create new custom network. 2 00:00:09,370 --> 00:00:16,149 And you know that in the custom network we are able to assign custom names to containers and they use 3 00:00:16,210 --> 00:00:21,280 those names for communication and basically under the hood on our host. 4 00:00:21,280 --> 00:00:29,590 There is DNS cetera that resolves those custom names to IP addresses of the containers and beauty of 5 00:00:29,590 --> 00:00:35,320 this approach is that containers may have different dynamic IP addresses on different moments of time 6 00:00:35,680 --> 00:00:38,300 but names will be still the same. 7 00:00:38,440 --> 00:00:46,800 And Internal DNS cetera inside of the dock host will refresh those binding the hostname sorry name to 8 00:00:46,840 --> 00:00:49,820 IP address and resolve them correctly. 9 00:00:50,110 --> 00:00:56,010 And the week of verify that we were able to communicate between busy Books one and busy books to contain 10 00:00:56,020 --> 00:01:02,060 those even after a start of correspondence for example busy books one container. 11 00:01:02,090 --> 00:01:05,790 All right let's not proceed and no let's start over. 12 00:01:05,830 --> 00:01:08,910 B should be my admin and my SPL containers. 13 00:01:08,920 --> 00:01:15,570 But now in the cast on network recap that we have made a record of the commands that we have used for 14 00:01:15,640 --> 00:01:22,030 start of the Maya scale etc. and BHP my admin but those comments where I used to in the first example 15 00:01:22,060 --> 00:01:24,730 let me add here is description. 16 00:01:24,730 --> 00:01:32,010 Example one where we have created those two containers in default breach network. 17 00:01:32,050 --> 00:01:33,450 Let me add here to this creeps. 18 00:01:33,490 --> 00:01:40,010 Example one default breach Network. 19 00:01:40,360 --> 00:01:40,990 Great. 20 00:01:40,990 --> 00:01:43,010 Let me know copied this entire section. 21 00:01:43,150 --> 00:01:49,260 And in the same file commands the disks deep regret that this file is located in that Maya scale folder 22 00:01:49,270 --> 00:01:51,640 here in our containers folder. 23 00:01:51,640 --> 00:02:00,010 Let me copied this section and pasted here below like so and here will be an example too and we'll be 24 00:02:00,010 --> 00:02:00,700 here. 25 00:02:00,890 --> 00:02:08,110 Custom breach network and first of all of course we need to create a new custom network or we're able 26 00:02:08,110 --> 00:02:14,050 to reuse the custom network that we have created before but for the sake of this example let's create 27 00:02:14,140 --> 00:02:21,430 one more custom breach network and let's name it let's say my skill and he'll let me at this command 28 00:02:22,460 --> 00:02:30,580 dock our network create and name will be Maya Skrill and that's it and his description of this command 29 00:02:31,480 --> 00:02:37,070 create a custom breach network right. 30 00:02:37,440 --> 00:02:44,920 And now we are able to use name of this custom network in those commands and we will run my Skrill and 31 00:02:44,950 --> 00:02:52,420 BHP my admin containers in this custom Maya Skrill network and he let me add new line your step and 32 00:02:52,480 --> 00:02:58,590 add additional option does dash network and here will be name of new network my scale. 33 00:02:58,660 --> 00:03:04,120 And don't forget to add here backslash because we have split it the long command into multiple lines 34 00:03:04,600 --> 00:03:06,780 and remaining part will be the same. 35 00:03:06,820 --> 00:03:14,170 And basically let's also add the dash de option in order to start my s go container in by ground we 36 00:03:14,170 --> 00:03:19,660 actually don't need to see logs and if you need to do so you are always able to use Docker locks command 37 00:03:19,860 --> 00:03:27,000 with a D or name of corresponding container you want to read logs from great we have adjusted this throws 38 00:03:27,030 --> 00:03:33,970 the command and let's also adjust to this second command that will run BHP my admin and here we'll be 39 00:03:33,970 --> 00:03:44,270 communication over DNS name instead of address and actually DNS name will be name of the container. 40 00:03:44,400 --> 00:03:45,900 Let me add this information here. 41 00:03:45,900 --> 00:03:47,340 Name of the container. 42 00:03:48,600 --> 00:03:55,110 Let me use option or I'll zip combination in order to make this long line visible here on the screen 43 00:03:55,470 --> 00:04:03,360 and let me I just have this command dock Iran backslash and here we'll be on there's dish network my 44 00:04:03,380 --> 00:04:09,990 scale again same network those two containers will be attached to the same network and also let me add 45 00:04:09,990 --> 00:04:17,190 here that's the option and I'll run this container also in background all right we have placed those 46 00:04:17,190 --> 00:04:21,640 two containers into the cost of network called Maya scale here and here. 47 00:04:22,019 --> 00:04:29,350 But now most important part we need to adjust this set and we now want to communicate with my skill 48 00:04:29,370 --> 00:04:36,420 container using its name actually DNS name and that's actually the reason why we have to create that 49 00:04:36,420 --> 00:04:40,330 new custom network and we have adjusted this example number one. 50 00:04:40,350 --> 00:04:40,920 All right. 51 00:04:41,070 --> 00:04:48,210 Now we want to use hostname on name of the Maya scale container instead of this IP address let me removed 52 00:04:48,210 --> 00:04:55,830 as they gathered from here and type my Eskil but now we need to set off a custom name for this Maya 53 00:04:55,880 --> 00:05:02,160 circular container because we sites set up it will get randomly assigned name and that's not what we 54 00:05:02,160 --> 00:05:08,330 want to help and remember that we'll be able to communicate with this container if it will go on in 55 00:05:08,610 --> 00:05:10,980 with custom name it's not possible. 56 00:05:11,080 --> 00:05:11,520 Okay. 57 00:05:11,730 --> 00:05:19,170 Let's add one more option here and it will name look me it here there's this name and name will be my 58 00:05:19,320 --> 00:05:20,160 Skrill. 59 00:05:20,220 --> 00:05:27,550 And don't forget to add backslash like this and now we have actually created fully rocking configuration. 60 00:05:27,750 --> 00:05:31,160 Here is the command for start of the Maya skill Sara. 61 00:05:31,290 --> 00:05:35,370 And is command for a start of the BHP at my end container. 62 00:05:35,370 --> 00:05:36,130 Wonderful. 63 00:05:36,150 --> 00:05:42,380 Let's note does this set up and let's first create new custom network gold Maya scale. 64 00:05:42,390 --> 00:05:43,950 Let me copy simply this comment. 65 00:05:44,280 --> 00:05:50,100 Basically you are able to find this commands in GitHub repository for the scrolls but I recommend you 66 00:05:50,100 --> 00:05:56,220 to grade those commands manually along with me in such a way you'll learn much much more and much much 67 00:05:56,220 --> 00:05:57,090 better. 68 00:05:57,090 --> 00:05:57,450 Great. 69 00:05:57,450 --> 00:06:04,290 Let me a copy this comment gold two time and no A.L. let's create first Newcastle network Docker network 70 00:06:04,290 --> 00:06:15,610 create my Eskil network was created and let's inspect it first Docker network inspect my scale and here 71 00:06:15,610 --> 00:06:17,740 are the details about this custom network. 72 00:06:17,770 --> 00:06:24,530 Notice that the here is new subnet that was assigned to this custom network it is maxed subnet off the 73 00:06:24,520 --> 00:06:30,610 previous one that was used for cost of network we have created before them and here is new gateway that 74 00:06:30,610 --> 00:06:39,240 was actually created at the docker host please note that if you are working on Mac or Windows this IP 75 00:06:39,240 --> 00:06:45,220 address is created inside of the viewer doll machine that is running on macros or windows. 76 00:06:45,460 --> 00:06:52,210 And if I'll have a look at the if config on my Mac now if convicted I You will not see such a bother 77 00:06:52,210 --> 00:06:53,590 us here on the list. 78 00:06:53,610 --> 00:06:58,660 I will still see only as a net zero interface and low back zero interface. 79 00:06:58,660 --> 00:06:59,410 Sorry. 80 00:06:59,410 --> 00:07:00,620 Here it is. 81 00:07:00,640 --> 00:07:06,720 So here is a back and here is as I'm net zero with such IP address assigned to eat. 82 00:07:06,910 --> 00:07:15,430 There are no addresses from those ranges eyes or this range that we see here or a nasal Ranger's assigned 83 00:07:15,430 --> 00:07:21,490 to Oz or breach networks because those breach networks are created inside of the docker host. 84 00:07:21,490 --> 00:07:24,670 Again it relates only to Mac OS and Windows. 85 00:07:24,670 --> 00:07:30,850 If you are running the doc or direct on Linux you will see those new interfaces created directly on 86 00:07:30,940 --> 00:07:32,320 your computer. 87 00:07:32,320 --> 00:07:32,700 Great. 88 00:07:32,710 --> 00:07:33,680 Let me proceed. 89 00:07:33,700 --> 00:07:36,730 And now we are ready to create two new containers. 90 00:07:36,730 --> 00:07:38,540 Let me go to our comments here. 91 00:07:38,620 --> 00:07:42,920 Let me copy this comment that will create my skill container. 92 00:07:42,970 --> 00:07:44,240 Let me copy it. 93 00:07:44,260 --> 00:07:48,600 Go to terminal and paste here like so and press enter. 94 00:07:48,610 --> 00:07:54,850 Notice that we will still use an environment variable that will set the Maya scale root password and 95 00:07:54,850 --> 00:07:56,730 the two will be equal to my password. 96 00:07:56,740 --> 00:07:57,150 Great. 97 00:07:57,160 --> 00:08:01,620 Lets presenter and I see here a d of the container. 98 00:08:01,820 --> 00:08:04,820 Let's verify a way as it does a running or not dogger appears. 99 00:08:05,400 --> 00:08:06,830 And yes now it is up. 100 00:08:06,870 --> 00:08:08,100 It's a good sign. 101 00:08:08,100 --> 00:08:14,730 Let's not go back to visual studio gold and he'll just copy this comment book Iran and this comment 102 00:08:14,760 --> 00:08:18,120 will create the additional container with BHP. 103 00:08:18,150 --> 00:08:20,170 My admin image. 104 00:08:20,270 --> 00:08:22,740 Let's copy it and then go by here. 105 00:08:22,740 --> 00:08:28,000 Based anthro and I see a D of second container. 106 00:08:28,060 --> 00:08:36,240 Let's now have a look at the docker the result and now I see two containers running here with BHP my 107 00:08:36,350 --> 00:08:39,520 me image that was used for this container and here I see it. 108 00:08:39,559 --> 00:08:43,750 Maya scale you mentioned it was used for this second image and noticed that. 109 00:08:43,830 --> 00:08:50,550 Here you'll see custom name for this Maya scale image but there is still a random name assigned to this. 110 00:08:50,560 --> 00:08:57,060 BHP my editing image and the reason for that is that we will not actually require communication from 111 00:08:57,060 --> 00:08:59,290 Maya Skrill to BHP my Edmund. 112 00:08:59,310 --> 00:09:04,410 That's why we haven't assigned custom name to this BHP my Edmond container but basically if you want 113 00:09:04,410 --> 00:09:11,040 to keep it running and get back to it later on it's a good practice to assign custom name actually to 114 00:09:11,040 --> 00:09:12,210 it as well. 115 00:09:12,210 --> 00:09:18,420 All right let's now open up a web browser because we have created port mapping here what is and verify 116 00:09:18,480 --> 00:09:25,070 whether we will be able to connect to BHP my admin and establish connection to my school container. 117 00:09:25,440 --> 00:09:26,490 Let's try it. 118 00:09:26,550 --> 00:09:30,490 Let's go to Google Chrome and actually I see this page still opened here. 119 00:09:30,810 --> 00:09:34,850 Let's remove this part and let us enter a refresh page. 120 00:09:34,860 --> 00:09:36,550 Welcome to BHP my admin. 121 00:09:36,690 --> 00:09:39,750 Again this container is a brand new container. 122 00:09:39,750 --> 00:09:43,080 It differs from the container it was running before. 123 00:09:43,080 --> 00:09:46,930 All right here will be a user name for my high school database. 124 00:09:46,950 --> 00:09:50,980 And here will be a password recap the password is a here. 125 00:09:51,000 --> 00:09:56,050 Let me scroll up here was my password that we have set in this environment variable. 126 00:09:56,070 --> 00:10:07,460 Let's go back to Google Chrome and here type my password click go and I am in and that means that communication 127 00:10:07,490 --> 00:10:13,580 between BHP be my Edmond container and my Skrill was established successfully. 128 00:10:14,390 --> 00:10:19,340 And that is the most important outcome from the previous and this lecture. 129 00:10:19,340 --> 00:10:24,750 It was a long story and I explained you how to create custom bridge networks. 130 00:10:24,920 --> 00:10:26,450 What is an environment variable. 131 00:10:26,450 --> 00:10:30,410 How are you able to communicate in customer network using customer names. 132 00:10:30,410 --> 00:10:36,680 And finally we can gather all those pieces together and we have launched those two containers. 133 00:10:36,680 --> 00:10:44,760 BHP my admin and my school container now it's a good time to proceed and the next the let's lounge. 134 00:10:44,760 --> 00:10:51,750 One more container in this network in this my Skrill costal network and basically you are ready to get 135 00:10:51,750 --> 00:10:55,730 the challenge and you will need to create this custom container. 136 00:10:55,740 --> 00:10:58,400 It will be at what press container yourself. 137 00:10:58,440 --> 00:11:00,030 Challenge task comes next. 138 00:11:00,030 --> 00:11:05,550 It will be pretty simple and I am sure you will be able to complete yourself without any additional 139 00:11:05,550 --> 00:11:06,640 help. 140 00:11:06,660 --> 00:11:07,710 All right see you next. 141 00:11:07,710 --> 00:11:08,030 Bye bye.