Three-tier Architecture of Blogging site(WordPress, MySQL, Docker network) using Docker Automation that docker-compose.

Global Blogging Made Easy with Docker and WordPress.

• Set-up:

I use AWS EC2 Instance(AMI- Amazon linux) as Operating System for Docker and then i Install docker-compose on it.

• What is Three-tier Architecture:

1. For Blogging Site I use "WordPress".
2. For DataBase to the Wordpress I use "MySQL".
3. For Network I use own customised "Docker network".

Step: 1 [Install Docker & start Docker Service]

Docker-comopse work on Docker Engine, So we need to install Docker & Start Docker Services

Install Docker Command:

yum install docker

Start Docker service Command:

systemctl start docker

Step:2- [Install Docker-compose]

docker-compose:

docker-compose helps to make Automation in Docker Container, docker-compose is use for Automation, we creates Automation file by using yaml language, docker-compose file must be in YAML language.

"docker-compose.yml" is standard file name for docker-compose file.

• Following steps for installation:

For download docker-compose search on google "docker-compose standalone":

docker-compose Standalone Install Link- Docker-compose-download-link

curl downloads the Docker Compose binary for Linux into the /usr/local/bin/ directory:

curl -SL https://github.com/docker/compose/releases/download/v2.20.3/docker-compose-linux-x86_64 -o /usr/local/bin/docker-compose

Following command gives the downloaded docker-compose file executable permissions:

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

chmod: This is the command to change file permissions in Unix-like operating systems.

+x: This option adds execute permissions to the file. It allows the user to run the file as a program.

/usr/local/bin/docker-compose: This is the path to the docker-compose file.

To check Docker-compse install or not use command:

docker-compse version

Step:2- [docker-compose.yml automation file]

Create two directories One for mysql data base volume & Second for docker-compose code:-

This is code written in yaml language: (docker-compose DSL is Yaml)

To view docker-compose file:

To Run Docker-compose file the command is:

 docker-compose up -d

We use (-d) detached because it helps us to run or launch Container in background

• Three-tier Architecture created with the help of Docker-compose

Command will tell us which file is used to lauch container:

 docker-compose ls

Command that give us info about running container from docker-compose file:

 docker-compose ps 

Command used to see logs of container:

 docker-compose logs  

Step:3- [Access Wordpress from Browser]

To access this docker-compose setup -->>instance public IP+Port no.(Change EC2 instance inbound rule)

This interface shows on Google:-