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https://github.com/denisbuserski/docker-k8-demo
Demo projects regarding my first touch to Docker and K8s
https://github.com/denisbuserski/docker-k8-demo
docker java kubernetes mariadb spring-boot
Last synced: about 1 month ago
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Demo projects regarding my first touch to Docker and K8s
- Host: GitHub
- URL: https://github.com/denisbuserski/docker-k8-demo
- Owner: DenisBuserski
- Created: 2024-07-04T09:38:34.000Z (5 months ago)
- Default Branch: main
- Last Pushed: 2024-09-09T16:55:46.000Z (2 months ago)
- Last Synced: 2024-09-28T11:03:39.073Z (about 2 months ago)
- Topics: docker, java, kubernetes, mariadb, spring-boot
- Language: Java
- Homepage:
- Size: 4.66 MB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Docker & K8s
Docker
Build the Docker image from a Dockerfile
```
docker build -t [IMAGE_NAME]:[VERSION] .
docker build -t hello-docker:1.0 .
```
`-t` - Flag used to tag the image with a name and optionally a version or tag. Name - `hello-docker`, tag - `1.0`
`.` - Specifies the build context. The build context is the set of files located in the specified directory, which Docker
will use for the build process. The `.` refers to the current directory, meaning Docker will look for a Dockerfile in the
current directory and use the files in the current directory as the context for building the image.
| `docker run` | `docker start` | `docker stop` |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------|------------------------------|
| Creates and starts a new container from an image | Starts an existing stopped container | Stop the Docker container |
| `docker run --name [CONTAINER_NAME] [IMAGE_NAME]:[VERSION]` | `docker start [CONTAINER_ID]` | `docker stop [CONTAINER_ID]` |
| `--name` - Assign a custom name to the container being created | | |
| `docker run --name MyDockerApp hello-docker:1.0` | | |
| `docker run -d --rm --name MyDockerApp hello-docker:1.0` | | |
| `-d` - Detached mode. This allows you to continue using the terminal for other commands while the container runs in the background. | Starts the container in detached mode by default. | |
| `docker attach [CONTAINER_NAME]` - Connect your terminal to a running Docker container's standard input, output, and error streams. | | |
| `-rm` - Automatically remove the container when it exits. | | |
| `docker run -d -p 8080:80 --name MyDockerApp hello-docker:1.0` | | |
| `-p 8080:80` - Publish a container's port(s) to the host. Allows you to make services running inside the container accessible from the host machine or network. Maps port 8080 on the host to port 80 in the container. | | |
| Check all RUNNING Docker containers | Check all Docker containers | Check Docker images | Follow the logs of a container in realtime use |
|-------------------------------------|------------------------------|----------------------|------------------------------------------------|
| `docker ps` | `docker ps -a` | `docker images` | `docker logs -f [CONTAINER_NAME]` |
| Description | Command | | Addition |
|-------------------------------------------------|--------------------------------------------|--------------------------------------|------------------------------------------------------------|
| Delete container | `docker container rm [CONTAINER_ID]` | | |
| Delete image | `docker image rm [IMAGE_ID]` | `docker rmi [IMAGE_ID]` | Before deleting an image delete the container that uses it |
| Remove all unused images and containers | `docker system prune -a` | | |
| Remove volume | `docker volume rm` | `docker volume prune` | |
Docker has 2 options for containers to store files on the host machine, so that the files are persisted even after the
container stops:
| Volumes | Bind mounts(Host volume) |
|-------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Completely handled by Docker. | When you use a bind mount in Docker, you are linking a directory on the host filesystem to a directory in the container. |
| | If you modify, create, or delete files in the directory on the host, these changes will be immediately visible inside the container in the corresponding directory. |
| | If you modify, create, or delete files from within the container in the mounted directory, these changes will be reflected on the host filesystem. |
| One container writes to the storage while another reads from it. | Allows for real-time collaboration between the host and the container, which is particularly useful for development environments where code changes need to be tested immediately without rebuilding the container image. |
| Named volume - Have specific name assigned to it. | `docker run -v host_dir:container_dir` |
| `docker run -v name:container_dir` | |
| Anonymous volume - Not given a specific name. Docker assigns them an unique ID automatically. | |
| `docker run -v container_dir` | |
| | |
Start multiple containers `docker-compose.yml`:
```
docker-compose up
```
Stop the containers:
```
docker-compose down
```
TODO:
Add volumes to demo-docker-with-spring
Docker Swarm
Add port(-p) to demo-docker-with-spring
Try `docker exec my_container echo "Hello, World!"`
docker.yml
version:
services
backend: dockerfile
ports:
database:
environment
K8s
TODO:
Pods
Node
Cluster - Set of nodes
Master node
Worker node
Kublet
Control plane
Minikube
Kubectl - Kubernetes Command Line Tool
## Learning materials
### Udemy course
- [Docker & Kubernetes: The Practical Guide [2024 Edition]](https://www.udemy.com/course/docker-kubernetes-the-practical-guide/?couponCode=LETSLEARNNOWPP)
### Docker
- [Intro to Docker [with Java Examples]](https://www.youtube.com/watch?v=FzwIs2jMESM)
- [Docker in IntelliJ IDEA](https://www.youtube.com/watch?v=FzwIs2jMESM)
- [100+ Docker Concepts you Need to Know](https://www.youtube.com/watch?v=rIrNIzy6U_g)
- [Docker in 100 Seconds](https://www.youtube.com/watch?v=Gjnup-PuquQ)
- [Learn Docker in 7 Easy Steps - Full Beginner's Tutorial](https://www.youtube.com/watch?v=gAkwW2tuIqE)
- [How to dockerize your Spring Boot API | Docker Tutorial](https://www.youtube.com/watch?v=3SNKdr3f9Io)
- [you need to learn Docker RIGHT NOW!! // Docker Containers 101](https://www.youtube.com/watch?v=eGz9DS-aIeY)
- [Why Use Docker: Real-life Use Cases](https://www.youtube.com/watch?v=rcYswUg0J5k)
- [Multi Container Docker Applications | A real-world example](https://www.youtube.com/watch?v=bX_tFv0YCqg)
- [Docker Crash Course Tutorial](https://www.youtube.com/playlist?list=PL4cUxeGkcC9hxjeEtdHFNYMtCpjNBm3h7)
- [Docker Tutorial for Beginners | Full Course [2021]](https://www.youtube.com/watch?v=p28piYY_wv8&t=3763s)
- [Docker Volumes explained in 6 minutes](https://www.youtube.com/watch?v=p2PH_YPCsis)
- [Docker Volumes Explained](https://www.youtube.com/watch?v=n4LRpnqsXIo)
- [How to create and use a Docker volume](https://www.youtube.com/watch?v=_MlSdlP6nwc)
- [Docker Volumes Explained (PostgreSQL example)](https://www.youtube.com/watch?v=G-5c25DYnfI)
- [Docker Volumes Demo || Docker Tutorial 13](https://www.youtube.com/watch?v=SBUCYJgg4Mk)
- [Docker Crash Course #10 - Volumes](https://www.youtube.com/watch?v=Wh4BcFFr6Fc)
- [What is Docker Volume | How to create Volumes | What is Bind Mount | Docker Storage](https://www.youtube.com/watch?v=VOK06Q4QqvE)
- [Docker Compose will BLOW your MIND!! (a tutorial)](https://www.youtube.com/watch?v=DM65_JyGxCo)
- [Docker Compose & Docker Volumes | Docker](https://www.youtube.com/watch?v=41o4RJxfCZM)
- [Docker Crash Course #11 - Docker Compose](https://www.youtube.com/watch?v=TSySwrQcevM)
- [Docker Compose Tutorial](https://www.youtube.com/watch?v=HG6yIjZapSA)
- [When would you want to use docker and docker-compose on your projects?](https://www.youtube.com/watch?v=m3To85qMOuA&list=WL&index=94)
### K8s
- [What is Kubernetes?](https://www.youtube.com/watch?v=IMOZCDhH7do&list=PLN_xGGp_EzELV3J2Bp-kNkmI2Vor338NI&index=9)
- [Kubernetes Explained in 100 Seconds](https://www.youtube.com/watch?v=PziYflu8cB8)
- [Kubernetes Explained in 6 Minutes | k8s Architecture](https://www.youtube.com/watch?v=TlHvYWVUZyc&list=WL&index=51)
- [Docker vs Kubernetes vs Docker Swarm | Comparison in 5 mins](https://www.youtube.com/watch?v=9_s3h_GVzZc)
- [What is Kubernetes | Kubernetes explained in 15 mins](https://www.youtube.com/watch?v=VnvRFRk_51k)
- [Kubernetes Tutorial For Beginners - Learn Kubernetes](https://www.youtube.com/watch?v=yznvWW_L7AA&list=WL&index=104)
- [Kubernetes Tutorial - Kubernetes Architecture Explained](https://www.youtube.com/watch?v=1vnA13v8PcA&list=WL&index=83)
- [Първи стъпки с Kubernetes - Димитър Захариев](https://www.youtube.com/watch?v=-zu7qioThP4)