#Docker Compose

[debsdaniel03]

🚨✂Remover Imágenes Docker 🚢 sin usar o Dangling colgadas 💣

🚨Borrar Imágenes #Docker Sin Usar

Te dejo esta clase 🎁 #Gratis del #Curso Multi #Tenant con #Django y #Docker

🚨🚀 ¡Próximamente! Curso donde Dominarás Multi Tenant con Django 5 y Docker 🐍🐳 🔜

#Python #dockercompose

👉 https://youtu.be/g461CaDmml4 👈

[prabhatdavian-blog]

Docker MasterClass: Docker, Compose, SWARM, and DevOps

Docker has revolutionized the way we think about software development and deployment. By providing a consistent environment for applications, Docker allows developers to create, deploy, and run applications inside containers, ensuring that they work seamlessly across different computing environments. In this Docker MasterClass, we’ll explore Docker’s core components, including Docker Compose and Docker Swarm, and understand how Docker fits into the broader DevOps ecosystem.

Introduction to Docker

Docker is an open-source platform that automates the deployment of applications inside lightweight, portable containers. These containers package an application and its dependencies together, making it easy to move between development, testing, and production environments. Docker's efficiency and flexibility have made it a staple in modern software development.

Docker’s Core Components

Docker Engine

At the heart of Docker is the Docker Engine, a client-server application that builds, runs, and manages Docker containers. The Docker Engine consists of three components:

Docker Daemon: The background service that runs containers and manages Docker objects.

Docker CLI: The command-line interface used to interact with the Docker Daemon.

REST API: Allows communication with the Docker Daemon via HTTP requests.

Docker Images

Docker images are read-only templates that contain the instructions for creating a container. They include everything needed to run an application, including the code, runtime, libraries, and environment variables. Images are stored in a Docker registry, such as Docker Hub, from which they can be pulled and used to create containers.

Docker Containers

A Docker container is a running instance of a Docker image. Containers are isolated, secure, and can be easily started, stopped, and moved between environments. Because they contain everything needed to run an application, they ensure consistency across different stages of development and deployment.

Docker Compose: Managing Multi-Container Applications

Docker Compose is a tool that allows you to define and manage multi-container Docker applications. With Docker Compose, you can specify a multi-container application’s services, networks, and volumes in a single YAML file, known as docker-compose.yml.

Key Features of Docker Compose

Declarative Configuration: Define services, networks, and volumes in a straightforward YAML file.

Dependency Management: Docker Compose automatically starts services in the correct order, based on their dependencies.

Environment Variables: Easily pass environment variables into services, making configuration flexible and adaptable.

Scaling: Docker Compose allows you to scale services to multiple instances with a single command.

Docker Swarm: Orchestrating Containers

Docker Swarm is Docker’s native clustering and orchestration tool. It allows you to manage a cluster of Docker nodes as a single virtual system, simplifying the deployment and scaling of multi-container applications across multiple hosts.

Key Features of Docker Swarm

Service Discovery: Automatically discovers and loads balances services across the cluster.

Scaling: Easily scale services up or down by adding or removing nodes from the Swarm.

Rolling Updates: Perform updates to services without downtime by gradually replacing old containers with new ones.

Fault Tolerance: Redistributes workloads across the remaining nodes if a node fails.

Setting Up a Docker Swarm Cluster

To create a Docker Swarm, you need to initialize a Swarm manager on one node and then join additional nodes as workers:

bash

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# Initialize the Swarm manager docker swarm init # Add a worker node to the Swarm docker swarm join --token <worker-token> <manager-IP>:2377

Once your Swarm is set up, you can deploy a service across the cluster:

bash

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docker service create --replicas 3 --name my-service nginx:latest

This command creates a service named my-service with three replicas, distributed across the available nodes.

Docker in DevOps

Docker is an integral part of the DevOps pipeline, where it is used to streamline the process of developing, testing, and deploying applications.

Continuous Integration and Continuous Deployment (CI/CD)

In a CI/CD pipeline, Docker ensures consistency between development and production environments. Docker containers can be built, tested, and deployed automatically as part of the pipeline, reducing the likelihood of “works on my machine” issues.

Infrastructure as Code (IaC)

With Docker, infrastructure can be defined and managed as code. Dockerfiles, Docker Compose files, and Swarm configurations can be version-controlled and automated, allowing for reproducible and consistent deployments.

Collaboration and Consistency

Docker promotes collaboration between development, operations, and testing teams by providing a standardized environment. Teams can share Docker images and Compose files, ensuring that everyone is working with the same setup, from local development to production.

Advanced Docker Concepts

Docker Networking

Docker provides several networking modes, including bridge, host, and overlay networks. These modes allow containers to communicate with each other and with external networks, depending on the needs of your application.

Docker Volumes

Docker volumes are used to persist data generated by Docker containers. Volumes are independent of the container’s lifecycle, allowing data to persist even if the container is deleted or recreated.

Security Best Practices

Use Official Images: Prefer official Docker images from trusted sources to minimize security risks.

Limit Container Privileges: Run containers with the least privileges necessary to reduce the attack surface.

Regularly Update Containers: Keep your Docker images and containers up to date to protect against known vulnerabilities.

Conclusion

Docker has become a cornerstone of modern software development and deployment, providing a consistent, scalable, and secure platform for managing applications. By mastering Docker, Docker Compose, Docker Swarm, and integrating these tools into your DevOps pipeline, you can streamline your workflows, improve collaboration, and deploy applications with confidence.

Whether you're just starting out or looking to deepen your Docker knowledge, this MasterClass provides a comprehensive foundation to take your skills to the next level. Embrace the power of Docker, and transform the way you build, ship, and run applications.

[devlabsalliance]

Docker-Compose is an indispensable tool for managing multi-container Docker applications. With a simple YAML file, you can define, configure, and deploy all the services your application needs. 

[robomad]

Django and Docker: Containerizing Applications

Containerizing Django Applications with Docker: A Comprehensive Guide

Introduction Docker is a powerful tool that allows developers to create, deploy, and run applications in containers. Containers are lightweight, portable, and consistent environments that include everything needed to run an application, from the operating system to the code, runtime, libraries, and dependencies. This article will guide you through the process of containerizing a Django…

[kyprogramming]

Part 9 - Docker Network - step by step

[virtualizationhowto]

TICK Stack with Docker Compose Example

TICK Stack with Docker Compose Example - Learn how to spin up a TICK stack with Docker containers and initial configuration #tick #tickstack #docker #dockercontainers #monitoring #virtualization #homelab #homeserver

In thinking through my monitoring needs and a few projects I have coming up in mind, I wanted to spin up a fresh monitoring stack using the “Tick” stack. Let’s look at the Tick Stack with Docker Compose example and see how you can easily spin up a monitoring stack. Table of contentsWhat is a TICK Stack?Why is the TICK stack helpful?Docker Compose filesTelegraf configKapacitor configConfiguration…

[mp3monsterme]

Checking your OpenTelemetry pipeline with Telemetrygen

Testing OpenTelemetry configuration pipelines without resorting to instrumented applications, particularly for traces, can be a bit of a pain. Typically, you just want to validate you can get an exported/generated signal through your pipeline, which may not be the OpenTelemetry Collector (e.g., FluentBit or commercial solutions such as DataDog). This led to the creation of Tracegen, and then the…

[nile-bits]

10 Docker Best Practices Every Developer Should Know

Docker has completely changed how programmers create, deploy, and use programs. Docker makes software development and deployment easier by offering a uniform environment across all platforms with its lightweight, portable containers. Like every technology, Docker has its own set of best practices, though, which developers should adhere to in order to optimize maintainability, security, and efficiency. We’ll go over 10 Docker best practices in this extensive book, along with code samples to help you understand each one. This is a must-read for every developer...

Learn more here:

https://www.nilebits.com/blog/2024/03/10-docker-best-practices/

[tsubakicraft]

Dockerを使った例題の作成

だいぶ前に作ったWebアプリケーションを最新の環境で動くように修正し、モノづくり塾の学習テーマで使うため例題としました。 ソースコードはGitHubリポジトリで公開にしています。 アプリケーションの概要は、 小さなメモを黒板に貼り付けるようなインターフェース JSONWebTokenとBCryptを使った認証機能がある 自前のシングルページアプリケーション用のWidgetフレームワークを使っている MongoDBのストレージを使っている ユーザー間のメモ共有機能がある というもの。 これをDocker composeを使って、MongoDBとWebアプリケーションのスタックとしてデプロイするようにしています。 docker compose up…

[codeonedigest]

Docker Tag and Push Image to Hub | Docker Tagging Explained and Best Practices

Full Video Link: https://youtu.be/X-uuxvi10Cw Hi, a new #video on #DockerImageTagging is published on @codeonedigest #youtube channel. Learn TAGGING docker image. Different ways to TAG docker image #Tagdockerimage #pushdockerimagetodockerhubrepository #

Next step after building the docker image is to tag docker image. Image tagging is important to upload docker image to docker hub repository or azure container registry or elastic container registry etc. There are different ways to TAG docker image. Learn how to tag docker image? What are the best practices for docker image tagging? How to tag docker container image? How to tag and push docker…

[veuhoffblog]

Portainer unter Docker auf ein Linux-System installieren

In dieser Anleitung installieren wir Portainer für Docker unter Linux. Das leichtgewichtige Container-Management-Tool stellt uns nach der Installation eine Weboberfläche (GUI) für das Managen von Volumes, Netzwerke, Docker-Images und Container zur Verfügung.

Die Open-Source-Software unterstützt uns bei der Verwaltung und Überwachung von Containern unter Docker und vereinfacht den Umgang mit der Docker-Umgebung erheblich und ohne, dass tiefgreifende Kenntnisse in Docker für die Administration erforderlich sind...[Weiterlesen]

[fantrollology]

if i had a nickel for every character on here w a dead best friend id have 3 nickels

[gobusto]

being someone who uses Debian both professionally and at home is great because i spend 8 hours a day thinking about it in the most normal way possible whilst dealing with MySQL or whatever

and then i come home, boot up my Thinkpad, and am presented with posts like this on tumblr dot com

switching your computer to running on linux is a kind of forcefem

[robomad]

Using Docker with Node.js Applications

Learn how to use Docker with Node.js applications. This guide covers setting up Docker, creating Dockerfiles, managing dependencies, and using Docker Compose.

Introduction Docker has revolutionized the way we build, ship, and run applications. By containerizing your Node.js applications, you can ensure consistency across different environments, simplify dependencies management, and streamline deployment processes. This guide will walk you through the essentials of using Docker with Node.js applications, from setting up a Dockerfile to running your…