IT Hub Darbhanga

23/05/2024

AWS Cloud Services Cheat Sheet

05/01/2024

यह भीड़ कहीं और नहीं दरभंगा जंक्शन की है, जहां देश की पहली अमृत भारत ट्रेन को देखने लोगों की भारी भीड़ उमड़ पड़ी। दरभंगा-अयोध्या-दिल्ली (आनंदबिहार टर्मिनल) अमृत-भारत ट्रेन।

04/01/2024

Today,s Best photo
❤❤❤❤❤❤

25/11/2023

🐳 𝐌𝐚𝐢𝐧 𝐂𝐨𝐦𝐩𝐨𝐧𝐞𝐧𝐭𝐬 𝐨𝐟 𝐃𝐨𝐜𝐤𝐞𝐫 𝐄𝐱𝐩𝐥𝐚𝐢𝐧𝐞𝐝🚀

Building and deploying applications has its complexities. Software inconsistencies across different environments lead to significant issues including deployment failures, increased development and testing complexity, and more.

Docker solves the "it worked on my machine" problem, and streamlines application deployment by encapsulating applications and their dependencies into standardized, scalable, and isolated containers (containerization).

Docker has a handful of core components powering the technology. By understanding them you will have a strong fundamental understanding — Let's dive in!

𝗜𝗺𝗮𝗴𝗲𝘀:
Read-only templates that are used to build containers. Images are created with Dockerfile instructions or can be downloaded from a Docker registry like Docker Hub.

𝗖𝗼𝗻𝘁𝗮𝗶𝗻𝗲𝗿:
An instance of an image. It's a lightweight, standalone package that includes everything needed to run an application.

𝗗𝗼𝗰𝗸𝗲𝗿𝗳𝗶𝗹𝗲:
A script-like file that defines the steps to create a Docker image.

𝗗𝗼𝗰𝗸𝗲𝗿 𝗲𝗻𝗴𝗶𝗻𝗲:
The Docker engine is responsible for running and managing containers. It's composed of the Docker daemon and the Docker CLI that communicates through REST API.

𝗗𝗼𝗰𝗸𝗲𝗿 𝗱𝗮𝗲𝗺𝗼𝗻:
The daemon is a persistent background service responsible for managing objects. It does so via listening for API requests. Docker objects include images, containers, networks, and storage volumes.

𝗗𝗼𝗰𝗸𝗲𝗿 𝗿𝗲𝗴𝗶𝘀𝘁𝗿𝘆:
Are repositories where Docker images are stored and can be distributed from. Docker registries can be public or private. Docker Hub is the default public registry that Docker is configured with.

𝗗𝗼𝗰𝗸𝗲𝗿 𝗻𝗲𝘁𝘄𝗼𝗿𝗸:
Containers run on networks allowing them to communicate with each other and the outside world. The network provides the communication gateway between containers running on the same or different hosts.

𝗩𝗼𝗹𝘂𝗺𝗲𝘀:
Allow data to persist outside of a container and to be shared between container instances, even after a container is deleted. Volumes decouple data life from the container lifecycle.

The components listed above all tie together to produce a simple system for developers to automate the deployment, scaling, and management of applications. This has led Docker to become a powerful and integral tool in modern software development.

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19/11/2023

छठ महापर्व का दूसरा दिन
खरना पूजा 🌺🙏

01/11/2023

संकल्प आज हम लेते हैं, जन-जन को जाके जगाएंगे,
सौगंध मुझे इस मिट्टी की, हम भारत भव्य बनाएंगे।

01/11/2023

29/10/2023

CURL Cheat Sheet

26/10/2023

🐳 𝗘𝘅𝗽𝗹𝗼𝗿𝗶𝗻𝗴 𝗗𝗼𝗰𝗸𝗲𝗿 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 🐳

Are you ready to dive into the world of Docker? 🚀 Let's break down the key components of Docker architecture in a nutshell! 🔍

Docker simplifies application deployment and management, making it a go-to tool for DevOps and developers. 🤝

👨‍💻 𝗗𝗼𝗰𝗸𝗲𝗿 𝗖𝗹𝗶𝗲𝗻𝘁
Think of this as your command center! It's the interface you use to interact with Docker. You send commands to the Docker Client, who then communicates with the Docker Daemon to complete your requests.

🏠 𝗗𝗼𝗰𝗸𝗲𝗿 𝗛𝗼𝘀𝘁
Your trusty server or virtual machine! This is where the magic happens. Docker Host manages the containers, making sure they run smoothly.

🏛️ 𝗗𝗼𝗰𝗸𝗲𝗿 𝗥𝗲𝗴𝗶𝘀𝘁𝗿𝘆
Your software library! It's a repository for Docker images. Popular ones include Docker Hub. You can store, share, and access images from here.

🏗️𝗗𝗼𝗰𝗸𝗲𝗿 𝗗𝗮𝗲𝗺𝗼𝗻
This persistent process manages containers on the host. It listens for Docker Client requests, creates, starts, stops, and monitors containers.

📦 𝗖𝗼𝗻𝘁𝗮𝗶𝗻𝗲𝗿s
Containers are lightweight, portable, and consistent environments. They package your applications and dependencies, making them easily transferable and reproducible.

🖼️ 𝗜𝗺𝗮𝗴𝗲𝘀
The blueprints for containers! Images are read-only templates that contain everything needed to run your application. They serve as the basis for creating containers.

📥 𝗗𝗼𝗰𝗸𝗲𝗿 𝗣𝘂𝗹𝗹
Like ordering from a menu! 🍔 Use docker pull to fetch images from Docker Hub or other registries and store them on your host. 🌐

🏃‍♀️ 𝗗𝗼𝗰𝗸𝗲𝗿 𝗥𝘂𝗻
Docker run launches a container from an image, creating an instance you can interact with. Specify ports, volumes, and more to customize your container. 🚢

🔨 𝗗𝗼𝗰𝗸𝗲𝗿 𝗕𝘂𝗶𝗹𝗱
Use docker build to create custom images from a Dockerfile. It's like crafting your own unique containers tailored to your application's needs. 🎨
Follow for more

26/10/2023

🐳 𝗗𝗼𝗰𝗸𝗲𝗿 𝗖𝗼𝗻𝘁𝗮𝗶𝗻𝗲𝗿 𝗟𝗶𝗳𝗲𝗰𝘆𝗰𝗹𝗲 𝗘𝘅𝗽𝗹𝗮𝗶𝗻𝗲𝗱🔄

In the world of containers go through a fascinating journey✨

✔𝗖𝗿𝗲𝗮𝘁𝗲: Containers are born with a simple 'docker create' command, just like life's inception.
✔𝗥𝘂𝗻: Once created, containers come to life with 'docker start' and execute their tasks.
✔𝗣𝗮𝘂𝘀𝗲: Containers can take a breather with 'docker pause' while maintaining their state.
✔𝗦𝘁𝗼𝗽: When the job is done, 'docker stop' gracefully halts them.
✔𝗗𝗲𝗹𝗲𝘁𝗲: Like a chapter's end, 'docker rm' closes the container's book, leaving room for new beginnings.

This lifecycle offers flexibility and scalability, empowering developers to create robust and efficient application deployments. 🚀