everybody will do launch paid devops course, but this man do totally free, hats off man with my bottom heart, your work very much appreciate again thankyou launching for this course.
Question: what are real-time challanges with docker? Ans. Docker has a single point of failure. If docker daemon goes down, application is down. - docker run as root user which is a security threat. - resource constraints - if you are running too many containers on a single host, you may experience resource constraints. This can lead to slow performance or crashes. Solution is podman. Which solves your docker problem. It is not single point failure, it can run as normal non-root user. Ques. What steps you will take to secure containers? Ans. 1. Use distroless or image with not too many packages as your final image in multi stage build. 2. Ensure that networking is configured properly. If required configure custom bridge network and assign them to isolate networks. Create different bridge network for finance application. 3. Use utilities like Sync to scan your container images. Before you push them to production or staging environment.
One major diff between ADD and COPY is if you add a file present in .tar.gz format it'll be automatically unzipped in created container whereas copy doesn't have this feature )
By free means only in terms of money. All your videos compete with top tier trainings in India. In explaining the comcepts, "thaggede le" thank you Abhishek. 🙏👍👌
Hi Abhishek sir, From day 23 to 29 was very clear and you have cleared many doubts this was the best content about containers and docker I never seen in RUclips and finally, I scored 11 answers
In this globalized world all are running back to money but you are uploading free videos with real time scenarios it help full all .thank u, please keep on post
Some advanced questions on docker asked to me in interviews: How to run multiple docker compose on same machine What is build context What is run context Flow of request when you type docker commands How to connect to different daemons on demand through same docker client Env vs Build arguments How to pass arguments to containers which do not get persisted in the containter after build stage How env is different than arg What is -build-arg What are docker buildx What is scratch image What is distroless image How do you mount a docker secret Restart policy in docker
You have discussed all 12 questions previously, but get to know a few more points (real-time challenges and steps to secure containers) from the last 2 questions. Thank you so much Abhishek 🙏 God Bless You 😇
Docker is a Open Source PAAS based Platform . It is a container based application tool which have all the dependencies , library and binaries irrespective of the fact whatever OS it is .
Thanks Abhishek,The Docker concepts r very clear i have seen other courses previously but ur content gave me confidence..thanks again for bringing in good content for free ..even the paid courses dnt teach this much
Thanks for sharing covering this Abhishek, Really Helpful. Hearing for the 1st time about "Sync" utility and how its helpful but able to answer all the questions.
Abhishek, I wonder how neatly the course is arranged and thought. Just thinking of homework you have done to put these videos. what is needed how much needed and what not to miss etc. I got little interest while searching for virtualization and after watching your videos its like bundle of information neatly explained. Going through the DevOps course. Thanks a lot for your efforts.
Thanks bhai for all ur efforts ❤ I started month back and today completed till day 29 I am able to answer all except copy and add. Planned to start kubernetes from tomorrow 😊 Your work is commendable 😊
I was able to answer 9 questions out of 12 questions. Except, diff between ADD & COPY, real time challenges with Docker & the last question steps to secure containers.
Hai Abhishek, you have explained all topics in much detailed way. Can you please make a small video to explaining the docker-compose and how this is useful to perform multiple docker services containers. Please as per your free time do consider it Abhishek. Thank you
i am able to answer 10 questions , i was not able to ans add copy difference and last 2 que i was able to ans partially based on what taught so far in 28 videos, very much thankful for these education you are providing freely , trying hard to get a job with 1 year exp as fullstack developer , hoping to comment for good news
For the challenge of Docker Daemon as root, i used the concept of Apparmor. Bringing your docker up with Apparmor will bring up much more secure docker
Iam very much impressed with your classes please continue and cover some real time projects please use different build tools..cicd pipeline and use plug-in also sir..
7 to 8 questions i answered correctly not 100% but matched to some extent remaining 4 question were new to me but answers I could see as per your last videos
Docker is a container platform that developers use to package applications with all their dependencies so they can run smoothly across different environments.
Question. What is multi stage build in docker ? Ans. Concept of container itself is to keep it lightweight. Multi stage build allows you to build your docker container in multiple stages allowing you to copy artifacts from one stage to other. The major advantages of this is to build light weight containers. All dependencies and heavy base image were required only in build stage Final application build artifact(jar file) requires only Java runtime, not the dependencies required to build the application. So, final image size will drop from 800 MB to 20 mb. Ques. What are distroless images in docker Ans. Containers are also exposed to security vulnerabilities, cuz they are minimal os, still. Some images such as ubuntu comes with os related vulnerabilities or MySQL related dependencies. To solve this, image size was further shrunk. Distroless image are very very minimal such as scratch are hardly 1-2 mb. Instead of base image use distroless image. You don't even have basic command such as apt.
TQ for sharing the video sir, it's help me a lot to understand what type of questions the interviewer is going to ask and u covered all topics in docker with clear explanation
What is the diff between ENTRYPOINT vs CMD in Docker file: • ENTRYPOINT: o Defines the default executable that will always run when the container starts. o And it Can’t be overridden without actually changing the Dockerfile or passing --entrypoint during docker run. • CMD: o Whereas CMD Provides default arguments to the ENTRYPOINT or defines the default command if no ENTRYPOINT is specified. o And this Can be overridden when running the container.
he does not told it was secure network the network name that he put secure_network and newly created container in that network is isolated does not make any communtication with the other network containers.
Bro tell me how many real time projects in this playlist or else entire channel? And what are the day or video number? Is that the projects can I mention my cv or not
We would be delighted if you come up with a session on how to write a Dockerfile for real-time projects...Once again, thanks for our selfless work to the community, Abhishek Anna!! ♥
Hello, Thanks for the great DevOps playlist. I am learning a lot through your teachings. I am just wondering if there is a video for docker swam or docker compose? Can you also explain what is the difference between multi-stage docker builds and docker compose?
hi abhishek firstly i thankful for providing valuable devops course in free. Can you make a deep dive in containers networking explaining overlay n/w , Macvlan
Hi Abhishek, I have a question related to containers. What is the programmatic approach to checking the health of both the container and the application inside the container?
Hello tutor, if you are isolating containers, like the example you gave, how would the database container get the data from the web container..i think it should be that the database will be able to access the web , while the web wont have the access..
The Docker daemon can go down due to various reasons. Here's a breakdown of common scenarios, how to troubleshoot them, and ways to prevent such issues: 1. High Resource Utilization Reason: If the host system runs out of CPU, memory, or disk space, the Docker daemon may crash. Troubleshooting: Check system resources: top, htop, free -h, df -h Look for large container logs: docker logs --tail 100 Check disk usage in /var/lib/docker. Prevention: Set resource limits on containers using --memory and --cpu. Enable log rotation in Docker: "log-driver": "json-file", "log-opts": { "max-size": "10m", "max-file": "3" } 2. Corrupted Docker Files or Images Reason: Corruption in Docker files, such as docker.sock, images, or containers, can cause the daemon to fail. Troubleshooting: Check Docker logs: journalctl -u docker.service Remove corrupted images or containers: docker rm docker rmi Prevention: Regularly prune unused images, containers, and volumes: docker system prune -af 3. Incorrect Configuration Changes Reason: Misconfigured daemon.json or incorrect settings can prevent the Docker daemon from starting. Troubleshooting: Validate the daemon.json file: cat /etc/docker/daemon.json Restart Docker with verbose logging: dockerd --debug Prevention: Always test configuration changes in a non-production environment. Use a backup of the daemon.json file before making changes. 4. Port Conflicts Reason: The Docker daemon or containers may fail if ports required by Docker are already in use. Troubleshooting: Check for port conflicts: netstat -tuln | grep Kill processes using the conflicting port: sudo kill -9 Prevention: Use dynamic port allocation or custom port mappings for containers. 5. Kernel or OS Issues Reason: An outdated kernel, OS, or Docker version might lead to instability. Troubleshooting: Check Docker and OS versions: docker version uname -r Update the system: sudo apt update && sudo apt upgrade Prevention: Keep Docker, the kernel, and the OS updated. Use a supported Linux distribution for Docker (e.g., Ubuntu, CentOS). 6. Permissions Issues Reason: Incorrect permissions on Docker files or groups can prevent the daemon from running. Troubleshooting: Check Docker group: groups Add your user to the Docker group: sudo usermod -aG docker Prevention: Ensure proper file and group permissions for Docker-related files. 7. Third-Party Interference Reason: Security software, firewalls, or other tools may interfere with Docker. Troubleshooting: Check firewall rules: sudo iptables -L Temporarily disable security tools to test. Prevention: Configure security tools to allow Docker-related traffic. 8. Excessive Number of Containers Reason: Running too many containers on limited resources can overwhelm the daemon. Troubleshooting: List running containers: docker ps Stop unused containers: docker stop Prevention: Monitor and scale container workloads appropriately. General Prevention Tips: Regularly monitor Docker and system performance with tools like Prometheus or Grafana. Implement automated backups of important Docker configurations and data. Run Docker in a containerized or isolated environment (e.g., VM) for better fault tolerance.
Abhishek, you introduced Buildah initially and is their any plan to make a session on it ? Also, could you please provide example for docker prune as well ..
Since I followed all your Docker videos, I was able to answer most of them however, couldn't answer things like ADD vs COPY and few other points (like the last point of Question 12) which I was unaware of.
Hi abhishek garu thanks for your videos,one of the interview question is how do you check the vulnerabilities of docker image we created. 2.What happens if you update the image to the existing will it overwrite? 3.What happens if you update the image while container is running?
1 - sync 2- Yes, if you update the image to the existing one, it will overwrite the existing image. This is because Docker images are immutable, meaning that they cannot be changed once they are created. 3 - If you update the image while a container is running, the container will continue to run the old image. The new image will not be applied to the running container until it is restarted.
I got a few questions from this video Bro..at that moment I did not watch this video. How do we access application inside a container without using container port to debug some issue or etc.? this is one among them. Ur series gave me confidence Bro..
Awesome sir again, I answered 11 questions, need to improve the english more, One question though sir, What are the benefits of joining RUclips channel / benefit of Telegram channel?
Hi Abhishek, you are doing an amazing job!!! Coming to my query, I am a bit confused when you say that scurity of containers is less compared to that of a VM, but the fact remains that in real world, containers in all probability will be set up on the VMs only, so it seems a contradiction, may be my fundamental understanding is wrong..
just to point out one thing, the diagram which u have used for question 2 is wrong...n i really appreciate the way u explain things as well as i think 90% of the content is very relevant n real-time...Appreciate ur efforts bro...i'll donate some amount if u allow us to do so because creating content also needs resources
Hi Sagar .. Thanks for the support. The diagram is taken from official docker website, I don't think it can be wrong :p .. okay on a serious note, what do you think is wrong ? Please share :) You can become a member of our channel Sagar or reach out to me on LinkedIn
@@AbhishekVeeramalla actually i meant to say that diagram is less informative like in VM side of diagram u can see Host OS is totally missing and they have directly given Hypervisor which is not correct just that it creates confusion..but no worries once checked properly confusion gets cleared...
They are two completely different. Multi stage build is used to copy artifact's from one stage to another and build light weight and more secure containers. Docker compose is used to manage multiple containers in one file
Hello Abishek, thanks for all but I have a question would it reduce windows image as well? in terms of light weight? what about license term will work on this case for windows?
image is llke a class and container is like a object and with out creating containers for images images does not have any credibilty. diff between vms and containers is vms wants total separate complete os isolated with the host os while docker containers is rely on the host resources and it is having basic os lik run times like python application wants python as base image,java application want java run time as it os: this issues all can be solved by kubernetes by providing the multihost and multiple containers to manage the incoming traffic and main aim behind the creation of container is to pack the entire applicatiion with its dependencies and environments.multiple builds makes images less size to run the application in different environments.
in some docker file we can write so many cmd commands but its take latest cmd command(last cmd command) argument so what is purpose of other cmd explain me
Explained in the previous videos. It is the starting command when u run a contianer. For example, assume you have a docker image with python django app. If you don't write CMD ["python", "manage.py", "runserver"] .. user should manually login to the container and execute that command.
![TOP Docker Interview Questions and Answers | DevOps Interview [2025]](http://i.ytimg.com/vi/HHcgzhfuaWc/mqdefault.jpg)
everybody will do launch paid devops course, but this man do totally free, hats off man with my bottom heart, your work very much appreciate again thankyou launching for this course.
It's my pleasure
@@AbhishekVeeramalla please explain Kubernetes administration daily activities
Question: what are real-time challanges with docker?
Ans. Docker has a single point of failure. If docker daemon goes down, application is down.
- docker run as root user which is a security threat.
- resource constraints - if you are running too many containers on a single host, you may experience resource constraints. This can lead to slow performance or crashes.
Solution is podman. Which solves your docker problem. It is not single point failure, it can run as normal non-root user.
Ques. What steps you will take to secure containers?
Ans.
1. Use distroless or image with not too many packages as your final image in multi stage build.
2. Ensure that networking is configured properly. If required configure custom bridge network and assign them to isolate networks. Create different bridge network for finance application.
3. Use utilities like Sync to scan your container images. Before you push them to production or staging environment.
Great course 💗
Thanks for your support Jyothsna ❤️
One major diff between ADD and COPY is if you add a file present in .tar.gz format it'll be automatically unzipped in created container whereas copy doesn't have this feature )
Agree .. on to the point .. Missed it during the video .. Thanks for adding it here :)
By free means only in terms of money. All your videos compete with top tier trainings in India. In explaining the comcepts, "thaggede le" thank you Abhishek. 🙏👍👌
Thanks alot brother
@@AbhishekVeeramalla annaya paid course cheyyaindi many others are also doing but they are not crystal clear about concepts
Hi Abhishek sir, From day 23 to 29 was very clear and you have cleared many doubts this was the best content about containers and docker I never seen in RUclips and finally, I scored 11 answers
Amazing
In this globalized world all are running back to money
but you are uploading free videos with real time scenarios it help full all .thank u, please keep on post
Thanks alot
Some advanced questions on docker asked to me in interviews:
How to run multiple docker compose on same machine
What is build context
What is run context
Flow of request when you type docker commands
How to connect to different daemons on demand through same docker client
Env vs Build arguments
How to pass arguments to containers which do not get persisted in the containter after build stage
How env is different than arg
What is -build-arg
What are docker buildx
What is scratch image
What is distroless image
How do you mount a docker secret
Restart policy in docker
could u pls let m know how many years xp do u have ?
Thanks for sharing
@@vishnukumar4595 2.5 years
thanks for sharing
@@vishnukumar4595 3 years and all asked in top pbc’s
You have discussed all 12 questions previously, but get to know a few more points (real-time challenges and steps to secure containers) from the last 2 questions.
Thank you so much Abhishek 🙏
God Bless You 😇
😍😍😍
Dear Abhishek you are doing a great service to the community. Sincerely thank you anna
Thanks alot
Docker is a
Open Source
PAAS based Platform .
It is a container based application tool which have all the dependencies , library and binaries irrespective of the fact whatever OS it is .
Thanks Abhishek,The Docker concepts r very clear i have seen other courses previously but ur content gave me confidence..thanks again for bringing in good content for free ..even the paid courses dnt teach this much
Thanks a lot
Thanks for sharing covering this Abhishek, Really Helpful. Hearing for the 1st time about "Sync" utility and how its helpful but able to answer all the questions.
Snyk
Thank You Sir for day 23-29! I was really excited for docker & Kubernnetes.
I was able to answer 8 questions.
😎😎😎
Abhishek,
I wonder how neatly the course is arranged and thought. Just thinking of homework you have done to put these videos.
what is needed how much needed and what not to miss etc.
I got little interest while searching for virtualization and after watching your videos its like bundle of information neatly explained.
Going through the DevOps course. Thanks a lot for your efforts.
Much appreciated Abhishek, Really helpful for all kind of audiences in DevOps domain
Awesome
Abhishek you are the super star of the DevOps thank you so much
Thanks bhai for all ur efforts ❤
I started month back and today completed till day 29
I am able to answer all except copy and add.
Planned to start kubernetes from tomorrow 😊
Your work is commendable 😊
I was able to answer 9 questions out of 12 questions. Except, diff between ADD & COPY, real time challenges with Docker & the last question steps to secure containers.
As usual one stop solution for devops.. thanks a lot abhi and kudos to your efforts.
❤️
anna , also create a video or shorts on buildah as you told it resolves some of challenges of docker ..
There is a complete video
Anna , also add one on one connecting Li nk with you , I want to connect to you on that link
Tomorrow is My Interview. Thankyou For this!
this video gave real vibe of interview scenario thanks alot abhishek ...
You are most welcome
Hai Abhishek, you have explained all topics in much detailed way. Can you please make a small video to explaining the docker-compose and how this is useful to perform multiple docker services containers.
Please as per your free time do consider it Abhishek. Thank you
Ok noted .. sure
Thanks abhishek for sharing these informative Question.
Most welcome
i am able to answer 10 questions , i was not able to ans add copy difference and last 2 que i was able to ans partially based on what taught so far in 28 videos, very much thankful for these education you are providing freely , trying hard to get a job with 1 year exp as fullstack developer , hoping to comment for good news
For the challenge of Docker Daemon as root, i used the concept of Apparmor. Bringing your docker up with Apparmor will bring up much more secure docker
Interesting .. I haven't tried that
Thank you very much for letting me refresh docker knowledge in quickly.
Thanks alot
Thank you Abhishek.
This video is a gem.
As u said it's a crux of the docker videos you made.
The checkboxes as well 👌
Glad you liked it
Iam very much impressed with your classes please continue and cover some real time projects please use different build tools..cicd pipeline and use plug-in also sir..
Thanks, will do!
7 to 8 questions i answered correctly not 100% but matched to some extent remaining 4 question were new to me but answers I could see as per your last videos
Docker is a container platform that developers use to package applications with all their dependencies so they can run smoothly across different environments.
Question. What is multi stage build in docker ?
Ans. Concept of container itself is to keep it lightweight.
Multi stage build allows you to build your docker container in multiple stages allowing you to copy artifacts from one stage to other. The major advantages of this is to build light weight containers. All dependencies and heavy base image were required only in build stage
Final application build artifact(jar file) requires only Java runtime, not the dependencies required to build the application.
So, final image size will drop from 800 MB to 20 mb.
Ques. What are distroless images in docker
Ans. Containers are also exposed to security vulnerabilities, cuz they are minimal os, still. Some images such as ubuntu comes with os related vulnerabilities or MySQL related dependencies.
To solve this, image size was further shrunk. Distroless image are very very minimal such as scratch are hardly 1-2 mb. Instead of base image use distroless image. You don't even have basic command such as apt.
TQ for sharing the video sir, it's help me a lot to understand what type of questions the interviewer is going to ask and u covered all topics in docker with clear explanation
What is the diff between ENTRYPOINT vs CMD in Docker file:
• ENTRYPOINT:
o Defines the default executable that will always run when the container starts.
o And it Can’t be overridden without actually changing the Dockerfile or passing --entrypoint during docker run.
• CMD:
o Whereas CMD Provides default arguments to the ENTRYPOINT or defines the default command if no ENTRYPOINT is specified.
o And this Can be overridden when running the container.
Please create a blog on Podman vs Docker with a Hands-on project for production environment .
Thanks abhishek sir for the wonderful course content. I'm confident enough.
21:52 Using --network=secure-network will not create any type of secure network, its a new Bridge connection name. It will be isolated.
he does not told it was secure network the network name that he put secure_network and newly created container in that network is isolated does not make any communtication with the other network containers.
Thanks a lot brother..its very clear in networking concepts in docker as well as bridge and host network. Thank you soo much!!
Glad to hear that
Thank you anna you are doing awesome anna you are irreplaceble with any one thank you so much from bottom
of my heart
Lovely, thank you. this is a valuable information
Glad it was helpful!
Bro very thanks please also make videos for docker swarm and docker compose. This will help us more in future.
Hey .. sure
You are the best ❤️, thanks alot for the content/knowledge that you are sharing 😊
My pleasure!
Bro tell me how many real time projects in this playlist or else entire channel? And what are the day or video number?
Is that the projects can I mention my cv or not
For each topic there are projects. You can mention in cv
@@AbhishekVeeramallatq for your reply ❤
I have answered almost 9 out of 12 after I gone through your Docker videos
Great thanks a lot Abhishek
thank you sir , For giving me search a overall view how to secure the containers ,network secure
Amazing
I am waiting this video 😍 thnx sir
Awesome. Please share
We would be delighted if you come up with a session on how to write a Dockerfile for real-time projects...Once again, thanks for our selfless work to the community, Abhishek Anna!! ♥
Hello, Thanks for the great DevOps playlist. I am learning a lot through your teachings.
I am just wondering if there is a video for docker swam or docker compose?
Can you also explain what is the difference between multi-stage docker builds and docker compose?
Yes there is a video on docker compose
@@AbhishekVeeramalla ok I will check it out
Thanks for your response
Hello Abhishek appreciate your efforts ,Thank you so much if you can share more interview questions or links that will be great help.
Sure
hi abhishek firstly i thankful for providing valuable devops course in free. Can you make a deep dive in containers networking explaining overlay n/w , Macvlan
Nice one 👏
Thanks alot
Hi Abhishek, I have a question related to containers. What is the programmatic approach to checking the health of both the container and the application inside the container?
all and very easily
🔥
about 8 questions, Can you have a full video on Docker compose.
Sure
You are truly gem bhaiya❤
thanks alot
Thanks for the wonderful session, so this distroless image can be used only with multi stage docker container, Right ?
Mostly yess
@Abhishek can u pls create 2 seperate playlists for Zero to Hero for Devops and SRE?
Hello tutor, if you are isolating containers, like the example you gave, how would the database container get the data from the web container..i think it should be that the database will be able to access the web , while the web wont have the access..
33:40 u said if daemon goes down all app down right, so what are the reasons to daemon goes down and to fix the problem
The Docker daemon can go down due to various reasons. Here's a breakdown of common scenarios, how to troubleshoot them, and ways to prevent such issues:
1. High Resource Utilization
Reason: If the host system runs out of CPU, memory, or disk space, the Docker daemon may crash.
Troubleshooting:
Check system resources:
top, htop, free -h, df -h
Look for large container logs:
docker logs --tail 100
Check disk usage in /var/lib/docker.
Prevention:
Set resource limits on containers using --memory and --cpu.
Enable log rotation in Docker:
"log-driver": "json-file",
"log-opts": {
"max-size": "10m",
"max-file": "3"
}
2. Corrupted Docker Files or Images
Reason: Corruption in Docker files, such as docker.sock, images, or containers, can cause the daemon to fail.
Troubleshooting:
Check Docker logs:
journalctl -u docker.service
Remove corrupted images or containers:
docker rm
docker rmi
Prevention:
Regularly prune unused images, containers, and volumes:
docker system prune -af
3. Incorrect Configuration Changes
Reason: Misconfigured daemon.json or incorrect settings can prevent the Docker daemon from starting.
Troubleshooting:
Validate the daemon.json file:
cat /etc/docker/daemon.json
Restart Docker with verbose logging:
dockerd --debug
Prevention:
Always test configuration changes in a non-production environment.
Use a backup of the daemon.json file before making changes.
4. Port Conflicts
Reason: The Docker daemon or containers may fail if ports required by Docker are already in use.
Troubleshooting:
Check for port conflicts:
netstat -tuln | grep
Kill processes using the conflicting port:
sudo kill -9
Prevention:
Use dynamic port allocation or custom port mappings for containers.
5. Kernel or OS Issues
Reason: An outdated kernel, OS, or Docker version might lead to instability.
Troubleshooting:
Check Docker and OS versions:
docker version
uname -r
Update the system:
sudo apt update && sudo apt upgrade
Prevention:
Keep Docker, the kernel, and the OS updated.
Use a supported Linux distribution for Docker (e.g., Ubuntu, CentOS).
6. Permissions Issues
Reason: Incorrect permissions on Docker files or groups can prevent the daemon from running.
Troubleshooting:
Check Docker group:
groups
Add your user to the Docker group:
sudo usermod -aG docker
Prevention:
Ensure proper file and group permissions for Docker-related files.
7. Third-Party Interference
Reason: Security software, firewalls, or other tools may interfere with Docker.
Troubleshooting:
Check firewall rules:
sudo iptables -L
Temporarily disable security tools to test.
Prevention:
Configure security tools to allow Docker-related traffic.
8. Excessive Number of Containers
Reason: Running too many containers on limited resources can overwhelm the daemon.
Troubleshooting:
List running containers:
docker ps
Stop unused containers:
docker stop
Prevention:
Monitor and scale container workloads appropriately.
General Prevention Tips:
Regularly monitor Docker and system performance with tools like Prometheus or Grafana.
Implement automated backups of important Docker configurations and data.
Run Docker in a containerized or isolated environment (e.g., VM) for better fault tolerance.
Abhishek, you introduced Buildah initially and is their any plan to make a session on it ? Also, could you please provide example for docker prune as well ..
Yes, there will be a session on Buildah . You can also refer to existing video on builah on my channel .. just search for Buildah in the videos
Since I followed all your Docker videos, I was able to answer most of them however, couldn't answer things like ADD vs COPY and few other points (like the last point of Question 12) which I was unaware of.
Thank you for the wonderful explanation🙂
Thanks a lot
Hi Abhishek, If possible please add questions like - what are layers present in docker file with examples.
Thanks a lot, Abhi🙏
Welcome 🙏
Hi abhishek garu thanks for your videos,one of the interview question is how do you check the vulnerabilities of docker image we created. 2.What happens if you update the image to the existing will it overwrite? 3.What happens if you update the image while container is running?
1 - sync
2- Yes, if you update the image to the existing one, it will overwrite the existing image. This is because Docker images are immutable, meaning that they cannot be changed once they are created.
3 - If you update the image while a container is running, the container will continue to run the old image. The new image will not be applied to the running container until it is restarted.
@@normalman7076 thanks
Believe me
Aap Devops, Cloud computing ke IIT , IIM, IISC University sab kuch ho sir ❤
Nice one. can you please include little more practical challenges that might you faced in a real time....
Sure .. Noted
nice explain. thanks.👍
Welcome
I got a few questions from this video Bro..at that moment I did not watch this video. How do we access application inside a container without using container port to debug some issue or etc.? this is one among them. Ur series gave me confidence Bro..
Docker exec you can use
can we use 3-4 same containers in docker? so one goes down one will serve the application?
Awesome sir again,
I answered 11 questions, need to improve the english more,
One question though sir, What are the benefits of joining RUclips channel / benefit of Telegram channel?
Able to answer 9 out of 12.
abhishek please do videos on docker swarm and docker compose
Hi Abhishek, you are doing an amazing job!!! Coming to my query, I am a bit confused when you say that scurity of containers is less compared to that of a VM, but the fact remains that in real world, containers in all probability will be set up on the VMs only, so it seems a contradiction, may be my fundamental understanding is wrong..
just to point out one thing, the diagram which u have used for question 2 is wrong...n i really appreciate the way u explain things as well as i think 90% of the content is very relevant n real-time...Appreciate ur efforts bro...i'll donate some amount if u allow us to do so because creating content also needs resources
Hi Sagar .. Thanks for the support.
The diagram is taken from official docker website, I don't think it can be wrong :p .. okay on a serious note, what do you think is wrong ? Please share :)
You can become a member of our channel Sagar or reach out to me on LinkedIn
@@AbhishekVeeramalla actually i meant to say that diagram is less informative like in VM side of diagram u can see Host OS is totally missing and they have directly given Hypervisor which is not correct just that it creates confusion..but no worries once checked properly confusion gets cleared...
34:18 How can we configure the resources ?
Hi Abhishek sir,please make a viedio on docker swarm and docker compose
You should be a udemy tutor... specially for those scenario based questions..
i got 9 correct bro. But i need to develop my english so that i can tell the answers in structured way
Aap itne acche kyun ho .....😊
May goddess Saraswati give you more and more knowlege....ahh but share it with us also ...😊
Thank you so much for teaching 💓
Great effort!! THANKS ALOT ❤
You're welcome 😊
thank you abhishek
I have added all the question in md file and created a pull request. It will help others you can check it and merge,
Thanks
Just thanks🎉
Awesome job!!!!!
Thanks alot
No one can explain in these days 😍
Thanks a lot
Superb
Thank you!
Hi,
Difference between multi-Stage build vs docker-compose?
They are two completely different.
Multi stage build is used to copy artifact's from one stage to another and build light weight and more secure containers.
Docker compose is used to manage multiple containers in one file
Abhishek Sir, I could not find Join Button to your channel. how to join pls guide me.
Hey, Join button should be just beside the subscribe button
@@AbhishekVeeramalla is not showing. I am from Bangladesh. Is there any country specific?
Thank you
Hello Abishek, thanks for all but I have a question would it reduce windows image as well? in terms of light weight? what about license term will work on this case for windows?
image is llke a class and container is like a object and with out creating containers for images images does not have any credibilty.
diff between vms and containers is vms wants total separate complete os isolated with the host os while docker containers is rely on the host resources and it is having basic os lik run times like python application wants python as base image,java application want java run time as it os:
this issues all can be solved by kubernetes by providing the multihost and multiple containers to manage the incoming traffic
and main aim behind the creation of container is to pack the entire applicatiion with its dependencies and environments.multiple builds makes images less size
to run the application in different environments.
Thank you so much!
Hey Abhishek, It will be great if u can share all questions and answers in file.
Sure I will next time
in some docker file we can write so many cmd commands but its take latest cmd command(last cmd command) argument so what is purpose of other cmd
explain me
Explained in the previous videos. It is the starting command when u run a contianer.
For example, assume you have a docker image with python django app. If you don't write CMD ["python", "manage.py", "runserver"] .. user should manually login to the container and execute that command.
@@AbhishekVeeramalla thanks abhishek
Hi Abhishek bro, how long can we sustain our career with Devops in the market if we learn?
sir, casn you please explain about docker swarm and docker compose?
Docker swarm and compose are very less used .. so currently focus is Kubernetes
can we have more questions like related to storage driver,volume manager and space related Abhishek..