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HOW_TO_AWS_EKS.md

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AWS EKS

Amazon Elastic Kubernetes Service

Prerequisite:

  • AWS CLI configured.
  • IAM role has Administrator Access Permission.

Steps to follow:

Terraform Creation of EKS

Manually Creation of EKS

  1. Create AWS EKS Cluster i.e. https://docs.aws.amazon.com/eks/latest/userguide/create-cluster.html
  2. Create Node Role i.e https://docs.aws.amazon.com/eks/latest/userguide/create-node-role.html
  • Run the following command to create the node-role-trust-relationship.json file. 
    {
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "Service": "ec2.amazonaws.com"
      },
      "Action": "sts:AssumeRole"
    }
  ]
}
EOF```
  • Create the IAM role. 
    aws iam create-role \
  --role-name AmazonEKSNodeRole \
  --assume-role-policy-document file://"node-role-trust-relationship.json"
  • Attach two required IAM managed policies to the IAM role. 
    aws iam attach-role-policy \
  --policy-arn arn:aws:iam::aws:policy/AmazonEKSWorkerNodePolicy \
  --role-name AmazonEKSNodeRole
aws iam attach-role-policy \
  --policy-arn arn:aws:iam::aws:policy/AmazonEC2ContainerRegistryReadOnly \
  --role-name AmazonEKSNodeRole
  1. Create Node Groups i.e. https://docs.aws.amazon.com/eks/latest/userguide/create-managed-node-group.html

Code Deployment to eks cluster

  1. Connect to AWS eks 
    aws eks --region <region> update-kubeconfig --name <cluster_name>
aws eks --region ap-south-1 update-kubeconfig --name artworks
  2. Clone the code to AWS CLI or Local terminal git checkout aws-k8s
  3. Apply helm files 
    kubectl apply -f iac/docker/helm
kubectl apply -f iac/docker/helm/phpmyadmin
kubectl apply -f iac/docker/helm/mysql
kubectl apply -f iac/docker/helm/drupal
kubectl apply -f iac/docker/helm/nginx
  4. Make /var/www/html path in ngnix container 
    kubectl exec -it ngnix-6978c9db6f-7rthm  -- /bin/sh 

mkdir -p /var/www/html
  5. Composer Install & copy files to containers 
    composer install
chmod +x scripts/deploy-k8s && scripts/deploy-k8s
  6. Copy nginx.conf to nginx container 
    kubectl cp iac/docker/nginx-conf/ ngnix-6978c9db6f-7rthm:/etc/nginx/conf.d/ -c ngnix -n default
  7. Expose External IP 
    kubectl expose deployment ngnix --type=LoadBalancer --name=ngnix-expose

//Verify

[cloudshell-user@ip-XX-XX-40-248 drupal-docker]$ kubectl get services
NAME           TYPE           CLUSTER-IP       EXTERNAL-IP                                                               PORT(S)        AGE
drupal-fpm     ClusterIP      XX.XX.206.124   <none>                                                                    9000/TCP       19m
kubernetes     ClusterIP      XX.XX.0.1       <none>                                                                    443/TCP        28m
mysql          ClusterIP      XX.XX.33.90     <none>                                                                    3306/TCP       20m
ngnix          NodePort       XX.XX.125.9     <none>                                                                    80:31960/TCP   19m
ngnix-expose   LoadBalancer   XX.XX.130.181   b54896f17b3a644698d9ee63a41a17dc-378462229.ap-south-1.elb.amazonaws.com   80:30307/TCP   11s
phpmyadmin     ClusterIP      XX.XX.174.52    <none>                                                                    8080/TCP       20m
[cloudshell-user@ip-XX-XX-40-248 drupal-docker]$
  8. Visit your public IP i.e. b54896f17b3a644698d9ee63a41a17dc-378462229.ap-south-1.elb.amazonaws.com