How to install docker-compose on Ubuntu

"How to install docker-compose on Ubuntu"

About Docker-Compose

Docker Compose is a utility that is used for the definition and running of entirely composed applications by Docker. It enables users to declare a stack of containers which operate in combination or synchronously by use of a single docker-compose file which is usually conferred as a docker-compose file. yml. The services, networks, and volumes needed for the application to function in this file are identified.

Key features of Docker Compose:

Multi-Container Deployment: Docker Compose was envisaged with an ability to coordinate numerous service or container (s) running applications. For example, in a web application, it is possible to have a frontend service which comprises a web server, and a backend service which includes an API all of which are independent of a database service that can also be a container. All these containers can be defined, started, and controlled with Docker Compose's help.

Simplified Configuration: The docker-compose. The yml file is one of the easier-to-understand and fairly easy-to-read forms to layout an application’s stack. It depicts how users define each service, its image/ build context, environment variables, ports, network modes, volumes, dependencies & any other settings. From here, it becomes possible to have overall understanding of an entire application stack in one view.

Declarative Management: Docker Compose is imperative, although indirectly: the specifications of the application states are provided in the YAML file. Whenever docker-compose up is executed, the Docker Compose reads the configuration and it develops or begins all the particular containers as per the configurations set. If one starts adding services or if there are changes in the file's structure, by typing docker-compose up, the containers are updated to reflect the new configuration.

Environment Isolation: Docker Compose allows defining different environments – development, testing, production – in various docker-compose. Terminal commands, docker-compose yml files, or combined using overrides (docker-compose. override. yml). This makes it easy for one to change environments by using other configuration files without having to alter the main application stack.

Scaling Services: In addition, Docker Compose allows scaling a service with a simple command. For instance, if a web application has to deal with more traffic, then the number of instances of the web server service can be increased through the command docker-compose up — scale web=3. This results in the occurrence of multiple services while maintaining other configurations.

Networking: In its default setting, a docker compose always creates a private network for all the containers in a specific docker-compose. yml file. This means that the services will be able to identify each other with their service names being used as host names. In Docker Compose networking can be fine tuned through specification of multiple networks or linking of services to other networks.

Persistent Storage: Another advantage is that using Docker Compose, the users are able to define volumes that are used for the persistence of data that belongs to the containers. These volumes can be shared among containers or mounted on to different storage systems. This is especially helpful for databases and other services that must store information even if the data containers were halted or reconstructed.

Integration with Docker Swarm: The shown Docker Compose can be used with Docker Swarm, which is Docker’s homegrown orchestration software. A docker-compose. The yml file is transformed into a Swarm stack file to deploy the services to the docker swarm cluster for the easy scaling of the services in the distributed environment. Common Commands docker-compose up: It brings into existence the containers that have been defined in the docker-compose file. yml file.

docker-compose down: Stops and deletes all of the defined containers, networks and volumes. docker-compose build: Creates a Docker image for services declared in the configuration. docker-compose ps: Describes the availability of the services in the Docker Compose. Conclusion Docker Compose is a very important tool for developers and DevOps because it makes available a flexible mean to define, deploy, and orchestrate applications with multiple containers. That is why it is the most used orchestrator due to its simplicity, and flexibility, as well as being merged with Docker’s ecosystem.

What is Ubuntu?

Ubuntu is one of the GNU/Linux distributions based on Debian distribution which is mainly developed to supply OS for as many individuals as possible. This is one of the most favoured and commonly used Linux distributions, as it can satisfy both new and experienced Linux users and professionals due to its simplicity, a great number of contributions from the users and high level of security.

Overview

Ubuntu operating system was introduced in October 2004 by a company established by the South African, Mark Shuttleworth known as the Canonical Ltd. Due to the fact that it relies on community and costs a reasonable amount of money, the name Ubuntu is derived from the languages of Africa and it means ‘humanity toward others’. Ubuntu is free to download, use, and share, and it comes in several flavors, each tailored to different use cases, Ubuntu is an open-source operating system and is available for download, use, and distribution for free, and the Ubuntu operating system has several distros, each being developed for a particular purpose.
Ubuntu operating system was introduced in October 2004 by a company established by the South African, Mark Shuttleworth known as the Canonical Ltd. Due to the fact that it relies on community and costs a reasonable amount of money, the name Ubuntu is derived from the languages of Africa and it means ‘humanity toward others’. Ubuntu is free to download, use, and share, and it comes in several flavors, each tailored to different use cases: Ubuntu is an open-source operating system and is available for download, use, and distribution for free, and the Ubuntu operating system has several distros, each being developed for a particular purpose.
Ubuntu Desktop: At least that was the original version designed for individual personal computers and laptops. It is a based OS and contains pre-installed application software including Firefox internet browser, Libre Office suite, and some multimedia applications.
- Ubuntu Server: Development: Web server version for features developers need and work for web hosting, cloud computing or data center. It does not have a graphical user interface by default because it is intended for server tasks and optimized for performance.
Ubuntu Studio: A creative edition targeted towards artists and designers, allowing them to edit audio, video, stencils, and graphics in a single application.
Ubuntu Kylin: A version designed with the Chinese government’s endorsement and adjusted to Chinese conditions and preferences.

Features of Ubuntu

User-Friendly Interface: The underlying GUI environment of Ubuntu has always been based on GNOME, although Ubuntu switched from its in-house developed Unity in 2017. One of the best things about Ubuntu is that it provides a bright and clear interface, which provides an opportunity for an average user who doesn’t want to deal deeply with Linux.
Software and Package Management: It utilizes the APT (Advanced Package Tool) as the package manager, which makes it very convenient for the installation, updating, and removal of software. It also supports a special kind of package called “snap” packages, which are applications that contain all necessary dependencies.
Security: One of Ubuntu’s strengths is the security of this operating system. It emphasizes security with features such as updates, LTS versions, and security features like firewalls and encryptors.
Community and Support: Ubuntu has a powerful and dynamic community base that participates in the development of its new versions and also helps in case of problems a user may face. It has professional support services, thus making it suitable for businesses and enterprises to obtain their products from Canonical.
Customization: Ubuntu is extremely configurable. When implemented, it provides an exceptionally high degree of customization. Users can select various graphical interfaces, adjust the configuration, and change the look of the operating system.
Performance: Ubuntu is very friendly to all types of systems, ranging from older to current systems. It is especially known for its stability and, more importantly, operational performance, which qualifies it for both desktop and server use.

Install Docker-Compose

Step 1: Update Your System

Before installing Docker update your system and packages to the latest version:

sudo apt update

sudo apt upgrade -y

Step 2: Install Docker

If Docker is not installed in your system then type this command to download.

sudo apt install docker.io

Step 3: Install Docker Compose

To install Docker Compose you can run these commands:

curl -L "https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

chmod +x /usr/local/bin/docker-compose

Verify Installation

After installing we need to verify is Docker Compose installed successfully or not and for that run this command:

docker-compose --version

Output

Your output might be something different:

Docker Compose version v2.25.2

Vishal