AWS EKS Fargate Profile with Terraform

Step-01: Introduction¶

Run EKS Workloads on AWS Fargate

Step-02: Review Terraform Manifests¶

Update all the Kubernetes Resources (Deployments, Node Port Services, Ingress Service) with namespace = "fp-ns-app1".
All the Kubernetes Workloads (App1, App2 and App3) pods will be scheduled on Fargate Nodes
Project Folder: 06-run-on-fargate-terraform-manifests
c1-versions.tf
c2-remote-state-datasource.tf
c3-providers.tf
c4-kubernetes-app1-deployment.tf
c5-kubernetes-app2-deployment.tf

c6-kubernetes-app3-deployment.tf

# Custom Requests for Fargate Pods in a Kubernetes Deployment 
          resources {
            requests = {
              "cpu" = "1000m"
              "memory" = "2048Mi" 
            }
            limits = {
              "cpu" = "2000m"
              "memory" = "4096Mi"
            }
          }

c7-kubernetes-app1-nodeport-service.tf
c8-kubernetes-app2-nodeport-service.tf
c9-kubernetes-app3-nodeport-service.tf
c10-kubernetes-ingress-service.tf
c11-acm-certificate.tf

Step-03: Execute Terraform Commands¶

# Change Directory
cd 06-run-on-fargate-terraform-manifests

# Terraform Initialize
terraform init

# Terraform Validate
terraform validate

# Terraform Plan
terraform plan

# Terraform Apply
terraform apply -auto-approve

Step-04: Verify Kubernetes Resources¶

# Verify Nodes
kubectl get nodes
Observation:
1. New Fargate nodes will be created

# Verify Deployments
kubectl -n fp-ns-app1 get deploy

# Verify Pods
kubectl -n fp-ns-app1 get pods

# Verify Services
kubectl -n fp-ns-app1 get svc

# Verify Ingress Service
kubectl -n fp-ns-app1 get ingress

# Access Application
http://fargate-profile-demo-501.stacksimplify.com
http://fargate-profile-demo-501.stacksimplify.com/app1/index.html
http://fargate-profile-demo-501.stacksimplify.com/app2/index.html

Step-05: Review Pod Memory and CPU - Default Allocated¶

Fargate Pod vCPU Value vs Memory Value

# List Pods
kubectl -n fp-ns-app1 get pods

# Describe Pod
kubectl -n fp-ns-app1 describe pod <APP1-POD-NAME>
kubectl -n fp-ns-app1 describe pod app1-nginx-deployment-777cddb9b4-rhrpq
Observation:
1. Review Annotations section

# Sample: Default Capacity Allocated
Annotations:          CapacityProvisioned: 0.25vCPU 0.5GB

Step-06: Review Pod Memory and CPU - Custom Kubernetes Requests and Limits¶

# List Pods
kubectl -n fp-ns-app1 get pods

# Describe Pod
kubectl -n fp-ns-app1 describe pod <APP3-POD-NAME>
kubectl -n fp-ns-app1 describe pod app3-nginx-deployment-b54c5b6bd-m6hh9
Observation:
1. Review Annotations section

# Sample: Customized Capacity Allocated for Fargate Pod
CapacityProvisioned: 1vCPU 3GB

Step-07: Clean-Up¶

# Change Directory
cd 06-run-on-fargate-terraform-manifests

# Destroy Resources
terraform apply -destroy -auto-approve
rm -rf .terraform*

Step-08: Clean-Up EKS Cluster, LBC Controller, ExternalDNS and Fargate Profile¶

Destroy the Terraform Projects in below four folders
Terraform Project Folder: 01-ekscluster-terraform-manifests
Terraform Project Folder: 02-lbc-install-terraform-manifests
Terraform Project Folder: 03-externaldns-install-terraform-manifests
Terraform Project Folder: 04-fargate-profiles-terraform-manifests
We are going to use them for all upcoming Usecases.
Destroy Resorces Order
04-fargate-profiles-terraform-manifests
03-externaldns-install-terraform-manifests
02-lbc-install-terraform-manifests

01-ekscluster-terraform-manifests

##############################################################
## Delete Fargate Profile
# Change Directory
cd 04-fargate-profiles-terraform-manifests

# Terraform Destroy
terraform init
terraform apply -destroy -auto-approve
##############################################################
## Destroy External DNS
# Change Directroy
cd 03-externaldns-install-terraform-manifests

# Terraform Destroy
terraform init
terraform apply -destroy -auto-approve
##############################################################
## Destroy  LBC
# Change Directroy
cd 02-lbc-install-terraform-manifests

# Terraform Destroy
terraform init
terraform apply -destroy -auto-approve
##############################################################
## Destroy EKS Cluster
# Change Directroy
cd 01-ekscluster-terraform-manifests

# Terraform Destroy
terraform init
terraform apply -destroy -auto-approve
##############################################################