AWS Infrastructure Creation using Terraform by A Security Guru

Helpful Terraform Links:

• Terraform Language Documentation
• Resource: aws_security_group
• Resource: aws_instance

Step 0: Initialize Terraform

terraform init

Step 1: Plan Resources

terraform plan -var-file="vars/dev-west-2.tfvars"

Step 2: Apply Resources

terraform apply -var-file="vars/dev-west-2.tfvars"

Step 3: Commands to get the Jenkins admin password via command line

chmod 400 <keypair>
ssh -i <keypair> ec2-user@<public_dns>
sudo cat /var/lib/jenkins/secrets/initialAdminPassword

Some Useful Commands

#To get context information of kubernetes cluster
cat /home/ec2-user/.kube/config 

#To create namespace in kubernetes cluster
kubectl create namespace test

#To get deployments in a namespace in kubernetes cluster
kubectl get deployments --namespace=test 

#To get services in a namespace in kubernetes cluster
kubectl get svc --namespace=test 

#To delete everything in a namespace in kubernetes cluster
kubectl delete all --all -n test 

#To delete unused docker images to cleanup memeory on system 
docker system prune  

#To delete a docker image
docker image rm imagename  

#To Create EKS cluster
eksctl create cluster --name kubernetes-cluster --version 1.23 --region us-west-2 --nodegroup-name linux-nodes --node-type t2.xlarge --nodes 2 

#To Delete EKS cluster
eksctl delete cluster --region=us-west-2 --name=kubernetes-cluster #delete eks cluster

Step 4: Cleanup Terraform Resources

terraform destroy -var-file="vars/dev-west-2.tfvars"