Docker Compose Php Mysql Nginx
Introduction to Docker Compose for PHP, MySQL and Nginx
Docker Compose is a tool for scripting and managing the deployment of multi-container applications. It is a popular choice for developers and engineers looking to quickly and easily create highly-scalable applications with a low maintenance overhead. In this article, we will look at how to use Docker Compose to set up a stack of containers for running a PHP, MySQL and Nginx web application.
Understanding the Components of a Docker Compose-based Application
A Docker Compose-based web application will typically consist of three fundamental components: a web server, a database server, and a codebase. In this article, we will use Nginx as the web server, MySQL as the database server, and the PHP programming language as the codebase. All of these components can be packaged up together in a Docker Compose file, which can then be run by the Docker Compose command to launch the application.
Creating a Docker Compose File
The first step to creating a Docker Compose-based application is to create a Docker Compose file. A Docker Compose file is a simple YAML file that defines the containers that are needed to run the application. This file provides an easy way to define which services and containers are needed to run the application. In this article, we will use the following Docker Compose file as an example:
version: "3.8"
services:
web:
image: nginx:latest
ports:
- "8080:80"
volumes:
- ./web:/var/www/html
database:
image: mysql:latest
environment:
MYSQL_ROOT_PASSWORD: root
ports:
- "3306:3306"
volumes:
- ./database:/var/lib/mysql
php:
image: php:7.1
volumes:
- ./web:/var/www/html
This Docker Compose file defines three services, each with its own image, port, and volume configuration. The web service uses the latest version of the Nginx web server and is listening on port 8080. The database service is using the latest version of the MySQL database server and is listening on port 3306. Lastly, the php service is using the latest version of the PHP language and is connecting to the web and database services via the volumes defined in the file.
Launching the Docker Compose Application
Now that we have our Docker Compose file, we can use the Docker Compose command to launch our application. To do this, we simply need to type the following command in the terminal:
docker-compose up
This command will read our Docker Compose file and launch all of the services that were defined in it. Once the command completes, the application should be up and running.
Managing the Docker Compose Stack
Once the Docker Compose application is up and running, we can use the command line to manage the stack of containers. The most common and useful command is the docker-compose logs command. This command will show all of the logs from all of the containers in the stack. This can be useful for debugging any issue that may arise with our application.
There are several other commands that are available for managing the stack of containers. These include the docker-compose stop and docker-compose start commands, which can be used to stop and start all of the containers in the stack, and the docker-compose scale command, which can be used to increase or decrease the number of replicas of a given container.
Conclusion
Docker Compose is an excellent tool for quickly and easily setting up and managing a stack of containers for running a web application. It allows developers and engineers to quickly define and launch a stack of containers in a matter of minutes. In this article, we have looked at how to use Docker Compose to set up a stack of containers for running a PHP, MySQL and Nginx web application.
FAQs
What is Docker Compose?
Docker Compose is a tool for scripting and managing the deployment of multi-container applications. It is a popular choice for developers and engineers looking to quickly and easily create highly-scalable applications with a low maintenance overhead.
How do I create a Docker Compose file?
A Docker Compose file is a simple YAML file that defines the containers that are needed to run the application. This file provides an easy way to define which services and containers are needed to run the application.
How do I launch a Docker Compose-based application?
To launch a Docker Compose-based application, simply type the command `docker-compose up` in the terminal. This will read the Docker Compose file and launch all of the services that are defined in it.
How do I manage a Docker Compose stack?
The most common command for managing a stack of containers is the `docker-compose logs` command. This command will show all of the logs from all of the containers. There are also several other commands available for managing the stack, such as `docker-compose stop`, `docker-compose start`, and `docker-compose scale`.
Thank you for reading this article. Please read our other articles about using Docker Compose to create and manage web applications.
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