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All right.

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We have just made the notes of two comments that we have used for lounge of my Skrill and BHP my Edmond

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containers and we will get back to them a bit later.

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For now let's again greed to busy box containers and less try to perform communication between them

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using host names or names or doors containers.

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Let's do that.

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Let's lounge first.

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Busy Box container here Docker around this idea busy box with me open up new tab and here will be another

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busy box container dock out Ron that's a deep Busy Box and let me verify which IP addresses we're assigned

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to those containers hostname.

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This I actually those IP addresses are the same as well signed before but again the reason for that

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is that there are no other containers currently running in our setup.

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If they are where additional containers with IP addresses that are used to here now for example this

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one then a NAS or IP addresses will get assigned to those busy box containers like 17 or 517 or 6 and

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so on.

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All right let's check the IP address of this container hostname.

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This I and it has address one hundred seventy two 17 0 2.

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And if you will type hostname like so you could get hostname of this container of the Sarah.

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Also same here host name.

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And let's not try to be in this busy box Sarah by using its hostname this one.

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Let me quote this hostname from here.

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Go to this busy box container and use same command but base now hostname instead of APL address let's

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press enter and I see answer best address and that means that we are not able to connect to this busy

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box container using its hostname.

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Let me also show you something.

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Let's open up new type and docker P.S. here and let's use Docker inspect command and the type here.

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Idea of for example this container 3 9 like so and you'll see again IP address of this container.

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Here what is Gateway default gateway that is the same for both containers and here above.

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You'll see also fueled cold aliases and now with a set to No no let me show you how we're able to set

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custom alias for this container actually let's go back here and let's exit from this container and eggs

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it from this container as well and now let me type Docker on Iran.

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Does this help.

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And the here in this output you should see one option gold age.

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Here it is somewhere above that age and here you see the screen it does contain the hostname it means

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that using this option you are able to override default hostname that will be assigned to a specific

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container.

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Also you are able as you already know using option does desk name it is somewhere here.

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And yes here it is.

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There's this name you are able to assign custom name to the container kept that by default Docker a

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science randomly generated name container.

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And now let's try to use both options.

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Does that name and dash H hostname and assign custom names hostname and the container name to those

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busy box containers and verify whether Sampson will change and whether we will be able to connect being

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one container from a NAS or using AIS or container name or hostname or not.

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Let's do that.

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Let me clear a terminal and here will be busy Box 1 Docker run this idea let's use first option does

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this name here let's named busier books 1 and next let's use this H option stands for hostname and he'll

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let's say I'll use hostname busy books this one I have used different names in order to distinguish

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between hostname and the name of the container.

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And finally let's use the name of the image it just busy box let's press enter and now we are in CHL

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instead of this busy box one container and you file and our host name I should see busy books this one

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and if I'll answer hostname this I host name this I I should see IP address of this busy box one container

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let's do the same and let's create in similar way second busy books to container let's do that here.

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Dr. Ron this idea there's this name name will be busy books doom and hostname will be busy books that

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do and here will the name of the image busy box let's press enter and we are now in CHL here in the

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second container hostname we'll provide those hostname of the second container busy bookstore and the

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host name this I will provide us a biologist on this container let's as before try to pin the good thoughts

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to busy box container using its API address this one in order to verify connection between those two

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containers being one hundred seventy two seventeen oh two I'll get a response of course but if I'll

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try to be in good by hostname busy books this one I'll get better arduous busy books 1 Same response

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I'll get if I'll try it to be by using the name of this container its name is busy books 1 Let's do

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that.

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Been busy books one like so and again but arduous busy books 1 if I go to this the last step and enter

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here again Docker appears and afterwords enter Docker inspect Docker inspect and here let's inspect

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busy box one container by the way notice here custom names that were assigned to those containers and

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desert because we have used their desk name option when we have started those two containers and here

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let's inspect for example busy box one busy box one I could use eyes or name or I.D. of the container

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let's press enter and I see IPR there's this container but aliases is still set to know if I'll go to

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this four step and try to perform same action as with it on busy book storm for example Bianca busy

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books to or been busy books this too I'll get same response but address and the reason for that is that

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by default in default breach network you are not able to communicate between different containers using

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their names or horse names but as a rule in Docker I don't know whether it will change in the future

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or not but at the moment it is like this actually if you want to perform communication between a container

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of using their names you need to create first custom breach network and then create containers inside

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of debt custom breach network and let me next explain you how you're able to create custom network using

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the Docker and the create new containers inside of that custom network I'll see you next.

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Bye bye.