AUTHOR - MUHAMMAD IRFAN TAHIR

terraform GKE

Create VM Instance with scope of either all Google API's or specific Coz this code will play around with multiple API's

And Do the required Setup

tfenv -

 - git clone https://github.com/tfutils/tfenv.git ~/.tfenv

 - sudo ln -s ~/.tfenv/bin/* /usr/local/bin

 - tfenv install 0.14.0

 - tfenv use 0.14.0

 - terraform --version
      Output - Terraform v0.14.0

Docker -

 - curl https://get.docker.com/ > getdocker.sh
 - chmod +x getdocker.sh
 - ./getdocker.sh
 - sudo usermod -aG docker ubuntu

Docker-Composer -

 - sudo curl -L "https://github.com/docker/compose/releases/download/1.27.4/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
 - sudo chmod +x /usr/local/bin/docker-compose
 - docker-compose version

Kubelete, kubectl, kubeadm -

 - curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -

 - cat << EOF | sudo tee /etc/apt/sources.list.d/kubernetes.list
 - deb https://apt.kubernetes.io/ kubernetes-xenial main
 - EOF

 - sudo apt update
 - sudo apt install kubelet kubeadm kubectl

GCP CLI Install -

 - https://cloud.google.com/sdk/docs/install#deb

Configure GCP CLI for access Cred

In Code Directory

To initialize specific plugins for terraform

 - terraform init 

To see what sort of things will be deployed with this code

 - terraform plan

To deploy Things

 - terraform apply

Backend storage is bucket - bucket-addoptify-terraform

Terraform Code Explanation

 - Custom VPC
 - Custom Subnetwork
 - Firewall rules for Allowing Internal Communication
 - Firewall rules for Allowing ICMP
 - Firewall rules for Allowing SSH,RDP,HTTP,HTTPS
 - GKE Cluster in this VPC
 - Custom Node Pool
 - AutoScaling Of Worker Node
 - Provisioner for configuring cluster cred in kubectl 
 - CloudSQL Database with private IP only
 - No Root user configure Via Terraform, user can be configured through GUI For security purposes
 - Backend Storage For storing tfstate