Deploying WordPress Application on Kubernetes with AWS RDS using Terraform.

Task Description

• Write an Infrastructure as code using Terraform, which automatically deploys the WordPress application.
• On AWS, use RDS service for the relational database for WordPress application.
• Deploy WordPress as a container either on top of Minikube or EKS or Fargate service on AWS.
• The WordPress application should be accessible from the public world if deployed on AWS or through workstation if deployed on Minikube.

Kubernetes

Kubernetes is an open-source system for automating deployment, scaling, and management of containerized applications. Kubernetes help in runs containers on those instances with processes for deployment, maintenance, and scaling for Kubernetes I am using minikube. Minikube is an open-source tool that helps to run Kubernetes on a local computer

AWS RDS Amazon Relational Database Service (Amazon RDS)

Amazon Relational Database Service (Amazon RDS) makes it easy to set up, operate, and scale a relational database in the cloud. It provides cost-efficient and resizable capacity while automating time-consuming administration tasks such as hardware provisioning, database setup, patching, and backups.

Let’s Get Started

Step 1: Create an AWS profile and AWS login credentials and passwords.

Step 2: Create infrastructure as code using Terraform, which automatically deploys an application on minikube.

provider "kubernetes" {
    config_context = "minikube"
}
resource "kubernetes_deployment" "wps" {
   metadata {
       name = "wordpress"
   }
   spec {
      replicas = 3
      selector {
           match_labels = {
              "env" = "development" 
              "loc" = "IN"
              "site" = "Wordpress"
           }
      } 
   template { 
      metadata {
         labels = {
           "env" = "development"
           "loc" = "IN"
           "site" = "Wordpress"
        }
     }
     spec {
        container {
           image = "wordpress"
           name  = "wp"
       }
     }
   }
 }
}
resource "kubernetes_service" "example" {
metadata {
    name = "terraform-example"
}
spec {
    selector = {
        site =        kubernetes_deployment.wps.spec[0].template[0].metadata[0].labels.site
   }
   port {
   node_port   = 30001
   port        = 8080
   target_port = 80
  }
  type = "NodePort"
  }
}

Run the command :

terraform init
terraform apply

Step 3: On AWS, use RDS service for the relational database for WordPress application. Terraform code

provider "aws" {
  region = "ap-south-1"
  profile = "rohit"
}
resource "aws_db_instance" "new"{
   engine = "mysql"
   engine_version = "5.7.30"
   name = "mydb"
   username = "root" 
   password = "9a17e51792"
   instance_class = "db.t2.micro"
   allocated_storage = 10
   storage_type = "gp2"
   port = 3306
   auto_minor_version_upgrade = true
   publicly_accessible = true 
   parameter_group_name = "default.mysql5.7"
   skip_final_snapshot= true
}
output "db"{
   value = aws_db_instance.new.name
}
output "username"{ 
   value = aws_db_instance.new.username
}
output "password"{ 
   value = aws_db_instance.new.password
}
output "RDS" {
   value = aws_db_instance.new.endpoint
}

we have to fill all the information of the database

GitHub Link: https://github.com/rohitraut3366/wordpress_kubernetes_AWS-RDS.git

LinkedIn: https://www.linkedin.com/in/rohit-raut-71b8a119a/

I hope you had found this article interesting !!

Thank You !!