Day-28 | Docker Networking | Bridge vs Host vs Overlay |Secure containers with custom bridge network

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www.buymeacoffee.com/abhishekprd Hi Everyone, This class is very important for understanding the networking in docker and to move ahead with concepts like Kubernetes and Docker Swarm
In this video, you will learn about:
1. Why you need networking on Docker ?
2. How does Docker Networking Work ?
3. What are different types of Networking in Docker ?
4. Which Networking is default and Out of the Box ?
5. Play with Docker containers and inspect their Networks
6. Create a custom bridge network to secure it from other containers
0:00 - Introduction to Docker Networking
01:15 -Why Docker Networking with Example
02:50 - Comparing Docker Networking with VM networking
05:40 - How containers talk to Host in terms of networking ?
07:15: Default Networking in Docker and What happens without that ?
09:30: Different types of Networking in Docker ?
10:40 - Host Networking in Docker
12:46 - Networking Deep Dive
20:30 - Live Demo with Practical Examples
GitHub Link (Material)
==================
github.com/iam-veeramalla/Doc...
Telegram channel
===============
telegram.me/abhishekveeramalla
GitHub Repo used in the video:
-------------------------------------------------
github.com/iam-veeramalla/Doc...
About me:
-----------------
LinkedIn: / abhishek-veeramalla-77...
GitHub: github.com/iam-veeramalla
Medium: / abhishekveeramalla-av
RU-vid: / @abhishekveeramalla .
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Disclaimer: Unauthorized copying, reproduction, or distribution of this video content, in whole or in part, is strictly prohibited. Any attempt to upload, share, or use this content for commercial or non-commercial purposes without explicit permission from the owner will be subject to legal action. All rights reserved.

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15 июл 2024

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Комментарии : 168

@abhijitgupta123 Год назад

I have taken many courses from Udemy and all. But I must say this is the best course so far on Devops. Very simple way to explain lot of new things, concepts. Loved this 45 days devops courses. Absolutely awesome.

@AbhishekVeeramalla Год назад

Thanks alot Abhijit ❤️

@blackhat5458 10 месяцев назад

agree

@sidindian1982 3 месяца назад

Sir your Explanation on Secure + Bridge network + practical Example is just awesome .... 🙂

@spirited_rovers Год назад

Thanks for making us to understand the concept in a easy way.

@RAVIKUMAR-zg6bv 11 месяцев назад

Best content & Better Explanation what better tutor can deliver and you are the best of best Thank you bother 😍😍

@PaulSmith-bx2fq 2 месяца назад

Superb explanation!

@Cloudnp9458 4 месяца назад

Docker networking allows containers to communicate with each other and host system. Two scenarios, Container one connects to container two, Container one has isolation from container two. When you create a container. Docker creates veth, That is docker0. It allows docker container subnet to communicate with host. It is called bridge networking and it is default networking in docker. If there is no veth/docker0 the containerized application is not reachable from internet. So users will not be able to access application. Other ways of networking in docker.. 2. Host networking - the container will directly use network of host, bind eth network of your host. Whoever has access to host have access to container. Least secure way of networking in docker. 3. Overlay networking when you need to create a network that is common in all the host of Kubernetes/swarm cluster.

@priyapriya-nu5vp Месяц назад

Thks

@vback4238 Год назад

Thanks again to the best teacher on the internet. Viewers need to click the Like button; it doesn't cost anything!

@AbhishekVeeramalla Год назад

Thanks alot Bhai .. Please keep sharing the videos

@ravitejamaddireddy7925 26 дней назад

@@AbhishekVeeramalla hey abhi can you clear my doubt in the comment section....Hey Abhishek thanks for the wonderful explanation. I have one doubt in this time stamp 20:10 so here we are using the custom bridge to isolate the container. Here is my question -- even a custom bridge network also coming from the host right as per your diagram. How is this container secure?

@ravitejamaddireddy7925 26 дней назад

@@AbhishekVeeramalla Because if any hacker reaches to the host he can reach to the container r8?

@emmanuel2kus1 Год назад

We appreciate you @Abhishek ..Thank you so much

@AbhishekVeeramalla Год назад

Thanks alot .. Please share it with your friends and colleagues

@reneshmlal2809 3 месяца назад

Thank You ❤

@devops-journey01 Год назад

No words to say, simply awesome ❤️❤️❤️....

@AbhishekVeeramalla Год назад

Thanks alot. Please share

@goodthingstech9554 Год назад

For the past couple of weeks, I was searching for a contentful DevOps channel, Thankfully I found this Master Man 🙌

@AbhishekVeeramalla Год назад

❤️❤️❤️

@priyapriya-nu5vp Месяц назад

Thank you sir 😊

@amaldravid4979 Год назад

Recently I started following you, Your explanation is really awesome it makes people to understand easily, appreciating your efforts bro ...pls continue the same.

@AbhishekVeeramalla Год назад

For sure .. Thanks

@mohammed_rayees387 Месяц назад

Iam very thankful to Allah , Uss ne mujhe aap se mila diya Devops sikhne ke liye Thanks alot Abhishek bhaiya

@AbhishekVeeramalla Месяц назад

😍😍😍

@mohammed_rayees387 Месяц назад

@@AbhishekVeeramalla Oh my God! Guruji thanks alot , Mai dhani Hogaya

@Deva2596 9 месяцев назад

Thank you so much SIr🫡😊🤗

@ravindraravi7435 3 месяца назад

Thank you ^^

@kumudchandra7635 11 месяцев назад

High level Teacher /Mentor/Coach ..

@AbhishekVeeramalla 11 месяцев назад

Thanks

@shivanigadekar4281 6 месяцев назад

Thankyou for teaching this concept in a very crisp and easy manner, Before I use to be scare of docker networking. but now i am pretty confident about it

@AbhishekVeeramalla 6 месяцев назад

You are most welcome

@user-ed9ve8bx4p 11 месяцев назад

Just Awesome.

@AbhishekVeeramalla 11 месяцев назад

Many many thanks

@shashankchoubey9253 5 месяцев назад

very helpful :)

@user-ik4wn5tb6g 8 месяцев назад

great explanation.Thank you sir

@AbhishekVeeramalla 8 месяцев назад

You are welcome

@monirmostafiz2919 Год назад

awesome , this is the best for beginner

@AbhishekVeeramalla Год назад

Thanks alot

@samuelude6858 7 месяцев назад

Thanks bro, as always simple and excellent way of impacting knowledge. Lesson learnt docker(network)=k8s(namespace). More blessings all the way

@AbhishekVeeramalla 7 месяцев назад

Thanks

@traptithakur7399 2 месяца назад

I purchase course from udemy and tried to understand docker networking but it was not clear to me. Thank to Abhishek sir for best and bestest explanation.😊

@AbhishekVeeramalla 2 месяца назад

Glad to hear that

@kislaysinha9772 8 месяцев назад

thank you devops guru

@AbhishekVeeramalla 8 месяцев назад

Most welcome !!

@pavankumarakula2268 Год назад

The answer for the question that you asked us at @30:30 i.e. the IP address of the host-demo container would be either nothing or something in the subnet of the host network. Thanks for the wonderful explanation Abhishek.

@AbhishekVeeramalla Год назад

Awesome 😎

@Meigeshpatni Год назад

You are an amazing teacher Abhishek

@AbhishekVeeramalla Год назад

Thank you

@skk-dq4kb 4 месяца назад

Outstanding explanation 🤩

@AbhishekVeeramalla 4 месяца назад

Glad you think so!

@GKK120 10 месяцев назад

Awesome

@AbhishekVeeramalla 9 месяцев назад

Thanks a lot

@shubhamchaudhary3689 10 месяцев назад

Thank you Abhishek❤

@AbhishekVeeramalla 10 месяцев назад

You're welcome

@Adityaa2 Год назад

Thank you 😊🙏

@AbhishekVeeramalla Год назад

You're welcome 😊

@lokeshloku7676 Год назад

Wonderful content

@AbhishekVeeramalla Год назад

Thanks alot .. please share 🙏

@Cloudnp9458 4 месяца назад

@jaykumaranbu7173 Год назад

Nice, thanks

@AbhishekVeeramalla Год назад

Welcome

@baig378 5 месяцев назад

Hi Abhishek, Thank you for valuable content. I was searching for some one who gives me clear understanding about devops what to learn, how to proceed step by step. Luckily I found you through LinkedIn post from some person, and I got answers to all my confusion regarding Devops. Kudos to you. I have the following questions Abhishek, Q1: For suppose I have created a container with default bridge network or host network or custom network, but later stage I want to change the network to different one. Can I change without deleting the container? Q2: Host is communicating with different containers with different networks. Can we make the same among the containers? What I mean is can only a container in the same host have multiple networks so that it will communicate with different containers? Thank you.

@biswajitmohapatra2172 Год назад

Thank you sir for wonderful explanation.. after this please cover docker compose part!!

@AbhishekVeeramalla Год назад

Thanks Biswajit

@tejach3354 8 месяцев назад

Good session Abhishek bro. One good point your session is person without much technical background can able to catch and since you are not using any typical corporate English words ,we are able to adopt video easily in simple language .

@AbhishekVeeramalla 8 месяцев назад

Thanks alot 🚀🚀

@faisaliqbal7382 Год назад

thanks

@AbhishekVeeramalla Год назад

Welcome

@subash7777 6 месяцев назад

at 30:40 the host-demo container is created with host network name. so it will have completely different ip since its different from the bridge network and newly created custom network. Thank you for this valuable content. Clearly understood the implementation of the network in docker.

@bhanuteja_04 3 месяца назад

Then why don't it have host ip in the network section when we inspect the container?

@AmanGupta-tm9mp 3 месяца назад

just write the command : docker exec -it host-demo /bin/bash .It takes u to the host section and there u see root@Ip address which is your host machine Ip. But in network section u didn't get it. @@bhanuteja_04

@soumyadipchatterjee2267 6 месяцев назад

I feel very fortunate , lucky to associated with you and enhancing my skills . This is a perfect example where you illustrates typical Docker Networking in simple terms and make things understandable . Keep enriching us with such knowledge .😊😇🙏. One question except the Timestamp that How this Networking models can co relate with AWS & other cloud or how we can integrate ? Please make a video on this . Thanks a lot in advance again .

@AbhishekVeeramalla 6 месяцев назад

My pleasure!

@DeepakKumar-if6mv Год назад

Thanks Abhishek for this video. Please also assist on how one can explain gaps in experience.

@AbhishekVeeramalla Год назад

Sure .. I will try to do that

@anandsrivastava8734 Год назад

Thanks @abhishek ..was waiting for this

@AbhishekVeeramalla Год назад

Please share it if you like the video

@anandsrivastava8734 Год назад

@@AbhishekVeeramalla Definitely, however I keep sharing your videos within my group 😊

@anuragnair1862 10 месяцев назад

Thank you Abhishek for explaning about docker volumes i have a question how docker manages multiple volumes or storage volumes must be using resource like disk space from host os how storage is managed here pls clear this doubt @Abhishek

@sandhyavishakha 8 месяцев назад

If possible, please make a video on Docker Compose, it would really help.. Thank you!

@AbhishekVeeramalla 8 месяцев назад

Sure thing, noted

@rktech8157 Год назад

Thank you so much for explaining this networking concept in very easy and clear way. If you have time could you please create a short demo for Overlay network. Thanks in advance.

@AbhishekVeeramalla Год назад

Hi RKtech, I can do that but frankly it will not be of much use for the efforts as overlay networks like calico, sdn can be installed much simpler way once we move to Kubernetes. But I will try to do that If I find some time

@rktech8157 Год назад

@@AbhishekVeeramalla Thank you so much!!

@mohammed_rayees387 Месяц назад

@30:30 IP address of host-demo container = IP address of host (EC2-instance)

@avinashreddy2309 6 месяцев назад

kudos to you🙌, I have attended paid training before, he didn't even teach this topic.

@AbhishekVeeramalla 6 месяцев назад

Glad it was helpful!

@Rameshpowervlogs Год назад

super bro

@AbhishekVeeramalla Год назад

Thanks .. Please share

@Rameshpowervlogs Год назад

@@AbhishekVeeramalla shared already

@chetank-ed6wu 3 месяца назад

Please explain about docker compose

@umashanker3244 11 месяцев назад

Can you explain about docker swarm

@amitbadyal7631 7 месяцев назад

hi abhishek videos are great. can you do a favour as you have different videos on interview questions on every tool , can you merge them all and make a long video like mostly asked devops interviews questions or important devops interviews questions like that. it would be very helpful for the students to prepare for the interviews and you can also add new questions into that also. i wish you could see this message.

@AbhishekVeeramalla 7 месяцев назад

Will try

@amitbadyal7631 7 месяцев назад

@@AbhishekVeeramalla sure sir

@sasanka7474 Год назад

31:10 by default it's a ec2/host network when we trying to create a container with host

@AbhishekVeeramalla Год назад

I did not get your question. Can you please elaborate?

@likithagangasani1918 4 месяца назад

30:42 minutes Host network ip would be ip address of vm/machine (have same cidr block)

@ravitejamaddireddy7925 26 дней назад

Hey abhishek thanks for the wonderful explanation. I have one doubt in this time stamp 20:10 so here we are using the custom bridge to isolate the container. Here is my question -- even custom bridge network also coming from host right as per your diagram. How is this container secure?

@lvbg3113 4 месяца назад

Hi, Question : At 14:33 doesnt C2 have its own docker-0 which gets binded to the host network?

@rajkajave 9 месяцев назад

Is there any way login container can talk with finance in case any specific app from login need info from finance?

@bhavaniboda4155 14 дней назад

Please explain about docker sharm

@anandkasina2996 7 месяцев назад

hey abhishek i have a doubt here if my host is on xyz range ,then the containers address will also be the same if i were to create the container in that host right?

@anshuagnihotri9489 Год назад

Please make a video in Hindi as well

@vasupodagatla393 Год назад

Plz do one more video on multistage docker build for java spring boot application

@AbhishekVeeramalla Год назад

Sure .. I will try

@Phoenix-2019 29 дней назад

Abhishek I have to ask question, how input container will talk to Finance container when it is required since we have separated using custom bridge network as front end has to talk to backend.

@bikensharma4577 8 месяцев назад

15:30 if we use bridge network too i guess it's fine as our instance will be in a private subnet....am i right in this case?

@ImtiazAli-in7gk Год назад

sir you are best I have one question regarding Cloning Repository. Sir is it neccesery to clone your Repoitory to do practice or we can create our own?

@AbhishekVeeramalla Год назад

Anything is fine

@AmrutaWagh-kb3yv 10 месяцев назад

can we use 3-4 same containers in docker? so one goes down one will serve the application?

@biggestgamelibrary4025 4 месяца назад

When we log into host demo container from this container we are able to ping to all other containers why?

@abheemk Год назад

Hi @Abhishek , 31:00 container was created with host network, and ip address corrsponds to host machine, how do we access that container if we have to ?

@AbhishekVeeramalla Год назад

By access do you want to login ?

@vamsimadduri12 19 дней назад

i have one question if bridge network error like container on the same host it will generate different subnet of each container how to resolve issue related bridge networking?

@Rameshpowervlogs Год назад

docker compose and docker swarm

@AbhishekVeeramalla Год назад

Awesome .. sure 😃

@dillu-k5f День назад

After Docker Image and container creation then how to run image through cli?

@irshadmohammed4724 Месяц назад

Hi @abhishek, thank you very much for doing devops series, I have one query, at 22: 52 after installing ping command when i am trying to check using ping -V getting this error-- error ping: usage error: Destination address required. could you please check and help me out on this

@adarshjha__1 9 месяцев назад

Day-26, 27, 28 done ✅️🙂

@AbhishekVeeramalla 9 месяцев назад

Keep going

@vinaykumarmatam3708 Год назад

Thanks..... What about docker service, docker swarm and docker compose

@AbhishekVeeramalla Год назад

We will not cover them in this course .. May be sometime after this course as many people are asking for docker compose

@vinaykumarmatam3708 Год назад

@@AbhishekVeeramalla okk thank you

@shadhashmi3714 Год назад

21:28 what do u mean by datach mode please explain

@sibaprasadbisoi90 9 месяцев назад

@abhishekveramalla anna - how do the containers communicate after restart as ip and hostnames are dynamic ?

@AbhishekVeeramalla 9 месяцев назад

You will learn exactly the same thing in next classes

@sibaprasadbisoi90 9 месяцев назад

thank you so much@@AbhishekVeeramalla excellent work, i wish you grow more and more.

@shravonidas.9449 3 месяца назад

@Abhishek request you to check my question - 1)How to access the host-demo container (it hold host network ) .As there is no IP for it then from different container ex-login how we can check if its reachable or not ?using which ip i can validate? 2 )from different host type network container how to communicate ?

@artibalvir1193 Месяц назад

you can use the host ip itself to login the container

@ariya_2411 2 месяца назад

Docker swarm

@brianhaessel6578 10 месяцев назад

I use podman, I followed your tutorial, my finance container can talk to the others on different bridge?

@AbhishekVeeramalla 10 месяцев назад

By default no

@amarnathmansali2687 Год назад

Time stamp 4:10 - can we consider container c1 and c2 as microservice 1 and microservice 2 , since containers are deployed as microservice or how pls clarify. TIA 😊

@AbhishekVeeramalla Год назад

Yes

@durgaprasad6460 7 месяцев назад

If multiple containers are created on the same host , are all containers connected to the same veth by default

@DeeBeekayKay 11 месяцев назад

Abhishek, At 20:30, you showed us how login and logout containers are connected to veth0 and payment container to docker network. The login an dlogout containers can talk to each other. But, if they want to tatalk to the payment container, is that possible? If yes, how?

@AmanGupta-tm9mp 3 месяца назад

I think it's not possible if we want to talk with payment container then we create container in that network , we don't want to talk with payment container that's why we isolate it. Is am I right Abhishek?

@bhanuteja_04 3 месяца назад

Hello Abhishek i have a doubt..(31.36) When we run the container using the host network we can access the container using the host ip ..then..why dont we see the ip of the host machine in the network section when we inspect the container using the host network?

@talkwithyusufzai7917 3 месяца назад

Because you are inspecting the container not the host if you want to see host ip hit this command "ip addr show "

@kondareddy2657 Год назад

Thanks for the session. I have a couple of doubts. 1. .I have one Java application which is running on the Websphere application server and it will connect with Oracle . If i use Docker i need to package my application + required software + Websphere + Oracle into one package ??

@AbhishekVeeramalla Год назад

Is websphere needed ? You need to check if you can redesign the app to make it light weight.

@HeyPardha-K Год назад

@@AbhishekVeeramalla is it possible to run application without application server?? I have no clue

@sivaraman8852 3 дня назад

can u please share all diagram slide related to this docker series. I have one question when i see ur videos its got understand clearly but after somedays its forgot so i need to be see ur videos again from scratch its take time . if you share these pictorial diagram slide its usefull for recall faster.could you please share these files not only this video i would suggest to share all pictorial diagram for ur videos for better understanding.

@UdayKumar-tu1is Год назад

hi bro i have a small doubt that how the login and logout container will talk each other with finance container like user details/ credit card detials in backend where the containers are logically isolated which we are made them secure. is they are using some nat gateway like process ? Is my doubt valid or not please respond. thanks alot for your knowledge sharing even i didnt see the people sharing the knowledge. really thanks alot bro once agin

@AbhishekVeeramalla Год назад

Hi Bro .. That was just an example. In that example I mean to say .. consider there are two different projects which need isolation.. so for easy understanding I said .. login , logout and payments.. In general, if I have to answer your question 1. Mostly applications with in the same product will be in same network. 2. Assume for some reason they are not in same network.. then yes .. u can create some VXLAN tunnels or VPC peering .. e.t.c.,.

@UdayKumar-tu1is Год назад

Thanks bro this cleared my doubt

@missy2904 4 месяца назад

31:43 how come the ip address is nothing atleast it should show host ip right if you use host network? But why nothing is showing in that? Is my understanding wrong about host networking ?

@saurabhbisht9280 Год назад

You missed docker compose in your playlist

@Sureshthebrokenking Год назад

@6:36 Brother I have a doubt, we are launching the host in one specific subnet, but when the container get created in another subnet, how is it possible

@AbhishekVeeramalla Год назад

A seperate isolated network is created for the containers and this netowrk is shared with the hosts. By default the network created is bridge network.

@ss-ih7zh 8 месяцев назад

for example if we are taken 3-tire application project like container-1 is frontend container-2 is backend container-3 is database if we assign Bridge network to container-1 & 2 and assigned customized bridge network to container-3 (database). Now how the backend container will connect to database and fetch the data?

@AbhishekVeeramalla 8 месяцев назад

Why do you keep them in different networks ? If u still want them to connect, you need to setup vlan or vxlan or peering

@ss-ih7zh 8 месяцев назад

@@AbhishekVeeramallathankyou for your immediate response

@sivapavan490 Год назад

Bro,here u r explaing the 3 container (login , logout and finance). Here has 3 containers and u can creating the 1 bridge driver and 1 custom driver. By using multi stage docker container concepts can we create these 3 containers are merge into 1 containers. In that 1 containers only can we divide into bridge driver and custom drivers

@AbhishekVeeramalla Год назад

yes you can do that

@mayankarya6204 Год назад

But i Guess the functionality will break (like db container always should be kept isolated)and you will get compromised with security like an attacked can easily get your sensitive data as i was only one container.

@rohitgaikwad2848 Год назад

Sir what is group in docker & what is use of that

@AbhishekVeeramalla Год назад

Which group ?

@rohitgaikwad2848 Год назад

@@AbhishekVeeramalla cgroup in docker

@rajaconstantine Год назад

Hi Why the video after this Docker has membership ?? Means till day 45 has membership???

@AbhishekVeeramalla Год назад

Hi Raja, No .. Please dont worry about that. All the 45 Days course will be free. Wait for today's video on "Introduction to kubernetes"

@rajaconstantine Год назад

@@AbhishekVeeramalla 😅😊🤗 ThnkYou Sir

@sumansamanta330 4 месяца назад

17th Feb, 2024

@storiesofbharat4826 7 месяцев назад

Bro did we miss docker swarm and docker compose?

@AbhishekVeeramalla 7 месяцев назад

Yes, we will learn k8s instead.

@rakeshvarma1907 10 месяцев назад

Hello Abhishek, (Timestamp: 13:45, ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-xrUGEoUpa3s.html ) can you please clarify why there is only 1 veth & Docker0 for both containers that are using the default bridge network? I tried to inspect default bridge network, but I don't see anything related to veth there. How can I see more info about these veth and docker0?