[0:00] So, what is Docker Compose?
[0:04] Docker Compose is a tool to manage multiple containers together instead of
[0:09] running many
[0:14] commands one by one.
[0:19] So, you can create one file called Docker Compose.ml with the single
[0:24] command you can
[0:28] start or stop all the containers and you can manage all the
[0:33] containers at a time.
[0:38] So, why it is useful means one key is a time save
[0:43] open the envelope and we can avoid some
[0:48] mistakes also, perfect for creating environments with many services like web applications
[0:52] and
[0:57] database and the caches.
[1:02] So, as I told you, AML stands for at another markup language,
[1:07] it is a simple text format
[1:12] for writing configuration files and the application law apply it want to
[1:16] type of configurations
[1:21] which you are on call.
[1:26] So, when you run the file automatically based on the changes, the
[1:31] containers will get managed.
[1:36] So, data is written as a key value pairs and uses spaces
[1:41] for indentations, node apps, not
[1:45] it is not a scripting language, just a way to describe the
[1:50] data structure.
[1:55] So, example Mhu McOoo.
[2:00] AML file Lopla, Evatengam
[2:05] indentation is nothing but the space, so just I said hereanos just
[2:09] I said this key and the
[2:14] right side is equality, left side is key and right side is
[2:19] value like this.
[2:24] So, how to valid it, so how to valid it, let me
[2:29] create instance quickly here for this purpose.
[2:33] First I am going to say here Docker, iPhone Compose, right, Ubuntu
[2:38] mission name selecting
[2:43] here, keeper, the network settings. So, for the practice and testing purpose,
[2:48] just
[2:53] I am going to add one more security group rule and I
[2:57] am setting it to all traffic and
[3:02] the source type anywhere. So, no need to open all the ports
[3:07] one by one, okay, for every
[3:12] application, that is the reason, right, now click on launch instance. So,
[3:17] once instance
[3:22] launching in the other one or login or other, so just click
[3:26] on view all instances, now
[3:31] let us select your instance, click on connect and copy the command
[3:36] and how to install this
[3:41] Docker. So, you already know, the two I think, so I told
[3:46] you, right. So, to install Docker,
[3:50] we give the curl command, okay, let me open the command prompt
[3:55] now. So, go to the location
[4:00] where keeper is available and just paste the SSH command here, now
[4:05] type s, now you can
[4:10] see we have connected to the Ubuntu mission. So, just the first
[4:14] command I am going to pass
[4:19] your sudo apt, if and get update, to update the packages, previous
[4:24] concept Sunday practice
[4:29] and in videos published on my group law, previous topics and I
[4:34] have a doubt, so I have so these
[4:38] are lalitha karu. Now, let us install the Docker first, so the
[4:43] curl command I am giving here,
[4:48] okay, okay, so how to run this sudo space s, s, s,
[4:53] s, get type and docker dot s,
[4:58] so after installing the Docker, we need to install the Docker compose,
[5:03] so it is the Docker
[5:07] compose and it is a plugin and matter, right. So, warning, what
[5:12] is the warning here, do not
[5:17] use old GitHub, come to the end and day, GitHub link, Docker
[5:22] compose new install, that
[5:27] is the old method. So, always do not give any curl commands,
[5:31] always use official method
[5:36] for the safety and security. So, just pass the command sudo apt
[5:41] update, we have already
[5:46] done this one and after that, you need to give this command
[5:51] to install Docker compose sudo
[5:55] apt install Docker iPhone compose iPhone plugin. Now, the plugin was installed,
[6:00] so how to verify
[6:05] it, just pass the command, do not give iPhone here, Docker compose
[6:10] version. So, it will show
[6:15] you the version of the Docker compose. So, there is a space
[6:19] between Docker and compose
[6:24] in the new command, okay. So, if you see a version number,
[6:29] Docker compose is installed
[6:34] correctly, you should know if you get any permission errors, I already
[6:39] done this slide,
[6:44] so just you need to remember these key points, Docker compose uses
[6:48] AML files. So, this compose
[6:53] plugin will use AML files to define and run multiple multi container
[6:58] Docker applications.
[7:03] AML files are all about indentation and key value. If the everything
[7:08] of our component based
[7:12] on the indentation and the left side you can read as key
[7:17] and right side, there will be
[7:22] a value. So, be careful with these spaces, spaces are nothing but
[7:27] the indentations, right.
[7:32] Validate your AML files before using in real projects, install Docker compose
[7:36] apt not by
[7:41] downloading scripts from the internet. Okay, now let's move to the practical
[7:46] part. So, we
[7:51] can manage our containers together with the help of this Docker compose,
[7:56] it's a AML is
[8:00] a special configuration file with the Docker compose, you can start all
[8:05] containers with
[8:10] just one command. So, as I told you stands were at another
[8:15] markup language, it uses key
[8:20] value based strictly indentation spaces not tabs. AML files are not scripts,
[8:25] they describe
[8:29] data and relationships not actions. What is the tip here, indentations are
[8:34] error indentation
[8:39] errors are the most common issue only spaces never tabs. Creating and
[8:44] understanding a
[8:49] Docker compose file. So, open a open or create the AML file,
[8:53] just you need to open the terminal
[8:58] and use you can text it as you can use like Nimn
[9:03] nano or vi, any text you can use. So,
[9:08] in this case we have used a text editor called bin and
[9:13] this is the, so just I am going to
[9:17] create a file here, file m is Docker f and compose dot
[9:22] AML. So, go to the insert mode and
[9:27] copy this syntax. So, in order to understand this first we have
[9:32] given the version, it will
[9:37] tell you the format version for the compose and services next image
[9:41] among services itself
[9:46] under the services we have DB services means all containers are listed
[9:51] under this key.
[9:56] So, like you can manipulate my DB and itself. So, my DB
[10:01] and my site service container names
[10:06] these are and image after that what will be their image, image
[10:10] name. The image name
[10:15] here we are using is MySQL. So, database it is related to
[10:20] and environment, iPhone E. So,
[10:25] using this iPhone E option we can pass user names, passwords into
[10:30] the application from
[10:34] the container itself. So, we can give and assign some ports to
[10:39] the application. So, here we
[10:44] are assigning 50 port. So, let us say I am going to
[10:49] copy the center code which I have
[10:54] and just I am going to the VM editor or syntax or
[10:58] whatever. So, just to go to escape I am
[11:03] going to put this one. So, just let me use nano instead
[11:08] of this one Docker compose,
[11:13] Docker iPhone compose dot AML. So, go to let us paste this
[11:18] or else let us use VIRLs.
[11:22] We are using the Docker iPhone compose dot AML and again go
[11:27] to insert mode. So, we put
[11:32] search for that. So, I could be coordinate this one and just
[11:37] click on go. So, valid AML
[11:42] it will it will tell you as it is a valid AML.
[11:47] Well, in case I make a valid AML and
[11:51] it is syntax error same layer in two. So, just in the
[11:56] terminal again go to the terminal
[12:01] now press escape colon WQ7 bit. So, now let us run the
[12:06] Docker this AML code. So, what
[12:11] is how to run this? So, just so just in order to
[12:15] start the container just you need to say
[12:20] Docker compose up iPhone D. So, just I am going to pass
[12:25] the command. So, you put current
[12:30] location either on the current location by default, Docker iPhone compose dot
[12:35] AML particularly
[12:39] on the internet, this is called on the matter file name other
[12:44] than the only check just Docker
[12:49] well, in case file name here you may merge the unit to
[12:54] you go for the iPhone F option.
[12:59] So, obviously, it is asking for the permissions which were denied. So,
[13:03] just I am going to
[13:08] say pseudo in front of this. So, you can see that images
[13:13] and pull out right. So, the environment
[13:18] is getting created now. So, let us go with the another example.
[13:23] So, example 2 is lamp
[13:28] stack MySQL, Tomcat, Apache and PHP. So, even even in the whole
[13:32] the create just now put
[13:37] at how commands passes. So, if we want to go to mono
[13:42] of file or pity just we are going
[13:47] to run the Docker compose command right. So, we are creating the
[13:52] one AML file and we are
[13:56] running the Docker compose up command right. So, then give file name
[14:01] let us go with the
[14:06] same file. So, first of all in the mono creates in a
[14:11] file either on the containers we remove
[14:16] channel and the command will be Docker remove old containers the command
[14:20] is Docker rm space
[14:25] iPhone F and you need to pass this command ok. So, it
[14:30] will remove all the old containers
[14:35] ok. So, I am going in the example 2, I am going
[14:40] to remove the old file instructions if it
[14:44] is not on a MySQL along with that one web application we
[14:49] are going to install that is
[14:54] nothing, but the Tomcat and we are going to install on programacle
[14:59] part that is PHP ok.
[15:04] So, this is the syntax SQL API install in Docker compose ok.
[15:09] Now, lamp architecture lamp stack
[15:13] MySQL services under the services you can see we are going to
[15:18] pull the image called MySQL
[15:23] and a SQL upload monomanias now we are setting up the password
[15:28] by giving the environment variables
[15:33] setting up environment variables and we are going to pull up apache
[15:37] web server also and
[15:42] the image name here I am going to use as tommy. So,
[15:47] it means the Tomcat image will get pulled
[15:52] from the Docker hub and I am going to give the port
[15:57] as 6060 for this Tomcat image. So,
[16:01] links I am giving as I am going to link this my
[16:06] DB links I am giving MySQL name we are
[16:11] going to change it to my DB and here we are going
[16:16] to link it to my database right. So,
[16:21] the Tomcat image on a database so link just now and we
[16:25] are pulling the PHP image also this
[16:30] is the entire syntax ok. So, I just I am going to
[16:35] copy this syntax and I am going to paste
[16:40] it here. So, now escape colon wq7 now how to run the
[16:45] command. So, just you need to say
[16:50] Docker compose up space if and the if and e means detached
[16:54] mode mono host machine no
[16:59] no one term but the command will get executed and the containers
[17:04] will run at the background
[17:09] right. So, just let me bring up this. So, you can see
[17:14] now it is pulling PHP apache this is
[17:18] all images it is getting pulled from the Docker hub. So, it
[17:23] is very easy process. So,
[17:28] one or two times I am going to EAML file write over
[17:33] just a easily you can do this one
[17:38] ok. But in case EAML file in case EAML file, EAML code
[17:42] write them I will you know class
[17:47] I am going to make a note and it says just you
[17:52] know the employee EAML code explanation
[17:57] will run to me. So, just I create an EAML code but
[18:02] economic example so how I am going
[18:06] to I image the container sim on even the manage as known
[18:11] as other just on that. So, lamps
[18:16] the EAML architecture we have created lamp and they in the last
[18:21] class also I told you
[18:26] what is the meaning of lamp what is the meaning of lamp
[18:31] ok. Enter web application key
[18:35] kavasana environment anta kudha we can create using lamp architecture. So, lamp
[18:40] full form
[18:45] into lalthikar we have an idea on the meko. L stands for
[18:50] what A stands for what M stands
[18:55] very good Linux Apache very good my SQL and PHP that is
[18:59] what ok. So, yes. So, after this
[19:04] let us remove the old containers and let us go to the
[19:09] other practical part. So, now I
[19:14] am going to stop either me call it access code just go
[19:19] to you can access other people
[19:23] in the entire let us go to you can copy the public
[19:28] IP of your machine and you can give
[19:33] 60 60 port. So, let us go to the AWS now and
[19:38] go back to the instances copy the public IP
[19:43] of it and just I am going to paste it here and
[19:47] call on 60 60 you can check whether your
[19:52] application is working or not. See while in case me re-page go
[19:57] to the code of the ludha
[20:02] runtime Tomcat was successfully installed the application ok in your system. So,
[20:07] let me
[20:12] remove all the containers let me stop and remove all the containers
[20:16] ok all the three
[20:21] containers stopped you can see right. So, now next thing what we
[20:26] are going to do means
[20:31] here lamb stack completed now we can create Jenkins QA prod using
[20:36] Tomcat right. So, we
[20:40] can install. So, what is the version here we are giving the
[20:45] version as three and what type
[20:50] of services dev instance we are creating and we are going to
[20:55] pull the image call Jenkins
[21:00] and we are setting it up to the port called 70 70
[21:04] by default make a Jenkins task a port
[21:09] may come to me 80 80 port long to me. So, we
[21:14] are going to pull one more image called
[21:19] Tommy Tommy is nothing, but the Tomcat Tomcat server. So, ok. So,
[21:24] in a port such as number
[21:28] of 18 8 double 9 ok by default it will also pick
[21:33] 80 80 and after that we are going to
[21:38] link this dev server to Jenkins right and after that prod instance
[21:43] also we are creating
[21:48] and after that we are pulling inside this instance one more image
[21:53] again Tommy and here
[21:57] I am changing this port to 1990 and we are linking it
[22:02] to dev server Jenkins ok.
[22:07] So, let me copy this entire code and its syntax first. So,
[22:12] copy the command and go
[22:17] to the VA editor, go to the AML file and go to
[22:21] inset mode, press escape first, delete
[22:26] the previous AML syntax and just I am going to paste the
[22:31] new syntax here. So, now let
[22:36] me go to inset mode, press escape now colon wq save and
[22:41] click ok. So, just type Ls, you
[22:45] can see our AML file is there here. So, just how to
[22:50] run the file. So, just give the command
[22:55] docker space compose space up I find D. So, you put in
[23:00] your only one of the main Jenkins
[23:05] there. So, how much time it was taken for me. So, almost
[23:09] one hour particularly, so now
[23:14] we are going to do that job for us. So, automatically. So,
[23:19] it can manual effort, there
[23:24] is no manual effort at all right. So, just press enter now.
[23:29] So, it is going to pull the
[23:34] new server. So, simply you can access each and everything. So, just
[23:38] me room a instance
[23:43] of public IP is contour and whatever the port numbers you have
[23:48] given for those applications
[23:53] you can directly access them into your browser. So, just go to
[23:58] the console, just copy the public
[24:02] IP of the instance now. So, I will work out now a
[24:07] lecture now. So, I am on Jenkins port
[24:12] number even the school number, 70, 70 and each other. So, just
[24:17] open the chrome browser
[24:22] just paste the public IP and I am giving colon 70, 70.
[24:26] Now, press enter see the Jenkins
[24:31] is going to ask you for the password now. So, Jenkins work
[24:36] out from there. Next time
[24:41] the chammono or Tomcat in KI. So, now, let us copy the
[24:46] public IP of our instance. So,
[24:50] you can see check all the containers are running or not. Just
[24:55] give the comment here
[25:00] Docker container. Alas, it will list out all the containers. See two
[25:05] Tomcat server, Tomcat
[25:10] of our publications are running right and one Jenkins was installed in
[25:15] the dev instance
[25:19] right. So, now, let us try to access it and I am
[25:24] going to chammono. We have assigned it
[25:29] 80 at 90, 70, 70, 80 default together, 70, 70 chammono. Now,
[25:34] call on 70, 70. Okay, Jenkins
[25:39] has a successful run out may no problem at all and what
[25:43] about the Tomcat, double 8,
[25:48] double 9 and 90. Okay. Now, let us go to console and
[25:53] go to check the proper go panjas
[25:58] let us pass double 9, double 9 Tomcat application should get.
[26:03] Oh, he taught me. Okay. 80, 80 portal on the bar. The
[26:07] 88 double n again.
[26:12] Go to insert mode and what is the example for here, the
[26:17] syntax.
[26:22] Copy this syntax, go back to terminal, just paste it. Now, press
[26:27] escape, WQ save and
[26:31] click it. Now, let us run this containers. So, how to run
[26:36] the container? Just you need
[26:41] to say Docker compose space up, I find D. Now, it is
[26:46] pulling all those images and we can
[26:51] access it giving the, what, double 4, double 4, 5 9 0
[26:56] 1 for V and C and 5 9 0 2, Firefox
[27:00] image was pulled from container started. So, just use the command Docker
[27:05] containers
[27:10] LS to see all the containers they are working fine or not.
[27:15] So, now, let us copy the public
[27:20] IP and test all our applications are working properly or not. So,
[27:24] what is the first port?
[27:29] Double 4, double 4. So, just give here double 4, double 4,
[27:34] the center. You can see Selenium
[27:39] grid interface successfully and next, what is the next port? On spatical
[27:44] port, type in
[27:48] the router, just remove all the containers. To remove all the containers,
[27:53] just pass this
[27:58] command. So, network, I will check, check, check, check, check, check, check.
[28:03] So tomorrow
[28:08] class I will tell you, I will go time to troubleshoot it.
[28:12] So, all the containers stopped
[28:17] and you can stop your instance also. So, there are doubts on
[28:22] the aragandic glass law,
[28:27] later on, I will add this session. No, it's not flat, it's
[28:32] just him. Please do practice.