Oracle Cloud Infrastructure- OKE and Terraform

Provisioning Kubernetes cluster using terraform. In this article, I am going describe the requirements to provision a Kubernetes cluster on OCI using terraform and deploying an application on Kubernetes cluster

Oracle Cloud Infrastructure

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Container Engine for Kubernetes (OKE)

Oracle Cloud Infrastructure Container Engine for Kubernetes is a fully-managed, scalable, and highly available service that you can use to deploy your containerized applications to the cloud. Use Container Engine for Kubernetes (OKE) when your development team wants to reliably build, deploy, and manage cloud-native applications

Terraform

Terraform is an infrastructure as code (IaC) tool that allows you to build, change, and version infrastructure safely and efficiently. This includes low-level components such as compute instances, storage, and networking, as well as high-level components such as DNS entries, SaaS features, etc.

PART 1

OCI Terraform Module https://github.com/oracle-terraform-modules/terraform-oci-oke

Install Terraform

For creating a OKE cluster what you need

A VCN, an Internet Gateway, a NAT gateway for private worker node deployment
worker subnets( public/private)with a set of security rules
load balancer subnets with its security rules

Step 1: Clone the terraform from git and cd terraform-oci-oke folder

Step 2: cp terraform.tfvars.example terraform.tfvars

Step 3: Finish Prerequisites or Check my Video(coming soon..)

Create a provider.tf file in root add 2 providers

Provider 1 -home regions

Provider 2- the current region where you want to provision your cluster.

                provider "oci" {
  fingerprint      = var.api_fingerprint
  private_key_path = var.api_private_key_path
  region           = var.region
  tenancy_ocid     = var.tenancy_id
  user_ocid        = var.user_id
}

provider "oci" {
  fingerprint      = var.api_fingerprint
  private_key_path = var.api_private_key_path
  region           = var.home_region
  tenancy_ocid     = var.tenancy_id
  user_ocid        = var.user_id
  alias            = "home"
}

step 4: Run terraform init command in the root folder