wassyq / eks-terraform-setup

Landmark Technologies, Ontario, Canada.

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WebSite : http://mylandmarktech.com/

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Landmark Technologies, - Landmark Technologies

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www.mylandmarktech.com

Terraform Installation And Setup In AWS EC2 Linux Instances

Using Terraform to provision a fully managed Amazon EKS Cluster

Prerequisite

• AWS Acccount.
• Create an ubuntu EC2 Instnace.
• Create IAM Role With Required Policies.
  • VPCFullAccess
  • EC2FullAcces
  • S3FullAccess ..etc
  • Administrator Access
• Attach IAM Role to EC2 Instance.

CREATE an admin user to manage our EKS Cluster

sudo adduser eksadmin
sudo echo "eksadmin  ALL=(ALL) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/eksadmin
sudo su - eksadmin

Install Terraform

$ git clone https://github.com/mylandmarktechs/eks-terraform-setup
$ cd eks-terraform-setup
# install terraform using a bash shell script
$ sh terraform-install.sh
# OR install terraform by running the commands below
$ wget https://releases.hashicorp.com/terraform/0.12.26/terraform_0.12.26_linux_amd64.zip
$ sudo unzip terraform_0.12.26_linux_amd64.zip -d /usr/local/bin/
# Export terraform binary path temporally
$ export PATH=$PATH:/usr/local/bin
# Add path permanently for current user.By Exporting path in .bashrc file at end of file.
$ vi .bashrc
   export PATH="$PATH:/usr/local/bin"
# Source .bashrc to reflect for current session
$ source ~/.bashrc  
# run the scripts https://github.com/mylandmarktechs/eks-terraform-setup/blob/main/terraform-install.sh

$ sudo yum install wget unzip -y
$ wget https://releases.hashicorp.com/terraform/0.12.26/terraform_0.12.26_linux_amd64.zip
$ sudo unzip terraform_0.12.26_linux_amd64.zip -d /usr/local/bin/
# Export terraform binary path temporally
$ export PATH=$PATH:/usr/local/bin
# Add path permanently for current user.By Exporting path in .bashrc file at end of file.
$ vi .bashrc
   export PATH="$PATH:/usr/local/bin"
# Source .bashrc to reflect for current session
$ source ~/.bashrc  
# run the scripts https://github.com/mylandmarktechs/eks-terraform-setup/blob/main/terraform-install.sh

Clone terraform scripts

$ git clone https://github.com/mylandmarktechs/eks-terraform-setup
$ cd eks-terraform-setup

Update Your Key Name in variables.tf file before executing terraform script.

Infrastructure As A Code using Terraform

Create Infrastructure(Amazon EKS, IAM Roles, AutoScalingGroups, Launch Configuration, LoadBalancer, NodeGroups,VPC,Subnets,Route Tables,Security Groups, NACLs, ..etc) As A Code Using Terraform Scripts

# Initialise to install plugins
$ terraform init 
# Validate terraform scripts
$ terraform validate 
# Plan terraform scripts which will list resources which is going  be created.
$ terraform plan 
# Apply to create resources
$ terraform apply --auto-approve

##  Destroy Infrastructure  
$ terraform destroy --auto-approve

## create the kubeconfig file  
$ mkdir .kube/ 
$ vi .kube/config
$ kubectl get pod
$ #!/bin/bash 
$ sh iam-authenticator.sh 
$ kubectl get pod
## deploy cluster auto scaler
$ kubectl apply -f clusterautoscaler.yml

##  Destroy Infrastructure  
```sh
$ terraform destroy --auto-approve 

EKS Getting Started Guide Configuration

This is the full configuration from https://www.terraform.io/docs/providers/aws/guides/eks-getting-started.html

See that guide for additional information.

NOTE: This full configuration utilizes the Terraform http provider to call out to icanhazip.com to determine your local workstation external IP for easily configuring EC2 Security Group access to the Kubernetes servers. Feel free to replace this as necessary.

kubectl create deployment autoscaler-demo --image=nginx kubectl get pods --all-namespaces | grep Running | wc -l kubectl get nodes -o yaml | grep pods kubectl scale deployment autoscaler-demo --replicas=20 https://docs.aws.amazon.com/eks/latest/userguide/install-aws-iam-authenticator.html aws-iam-authenticator help