kubernetes on cloud

README.md

@@ -1,27 +1,39 @@
 [![HitCount](http://hits.dwyl.com/angudadevops/k8s-on-cloud.svg)](http://hits.dwyl.com/angudadevops/k8s-on-cloud)
 
-<h1> Kubernetes on cloud with Terraform </h1> 
+<h1> Kubernetes on Cloud with Terraform </h1> 
 
-This repository helps to spin up AWS environment and create kubernetes cluster on top of that. 
+This repository helps to spin up cloud environment and create kubernetes cluster on top of that using kubeadm
 
 - Prerequisites
-  - AWS account details
-  - Ansible on your local machine
-  - Terraform on your local machine 
-  - EC2 instance Key Pair
+  - Linux machine or Mac Os Machine
 
 ### Usage
 
-Update the aws account details in terrform varaiable file, then run the below command to install kubernetes cluster on AWS 
+#### AWS
+Update the aws account details in terrform varaiable file, then run the below command to install kubernetes cluster on 
 
 ```
-bash k8scluster.sh
+bash k8scluster.sh aws
 ```
 
 To clean up the AWS environment with kubernetes, run the below command
 
 ```
-cd terrform
+cd terrform/aws
+terraform destroy -auto-approve
+```
+
+#### Azure
+Make sure you have azure account setup, as below command will open to login to your azure account. Once succesful login it will provision k8s cluster on Azure Virtual Machines
+
+```
+bash k8scluster.sh azure
+```
+
+To clean up the AWS environment with kubernetes, run the below command
+
+```
+cd terrform/azure
 terraform destroy -auto-approve 
 ```
 

ansible/inventory

@@ -1,7 +0,0 @@
-
-[k8s-masters]
-ec2-52-52-180-22.us-west-1.compute.amazonaws.com ansible_ssh_host=52.52.180.22 ansible_ssh_port=22 ansible_ssh_user=ubuntu ansible_ssh_private_key_file=/Users/aguda/Downloads/AWS/awstest.pem ansible_ssh_extra_args='-o StrictHostKeyChecking=no'
-
-[k8s-workers]
-ec2-13-57-111-53.us-west-1.compute.amazonaws.com ansible_ssh_host=13.57.111.53 ansible_ssh_port=22 ansible_ssh_user=ubuntu ansible_ssh_private_key_file=/Users/aguda/Downloads/AWS/awstest.pem ansible_ssh_extra_args='-o StrictHostKeyChecking=no'
-ec2-13-57-45-138.us-west-1.compute.amazonaws.com ansible_ssh_host=13.57.45.138 ansible_ssh_port=22 ansible_ssh_user=ubuntu ansible_ssh_private_key_file=/Users/aguda/Downloads/AWS/awstest.pem ansible_ssh_extra_args='-o StrictHostKeyChecking=no'

k8scluster.sh

@@ -1,15 +1,111 @@
 
-cd terraform
-terraform init
-terraform plan 
-terraform apply -auto-approve
-terraform output inventory > ../ansible/inventory
+azurecli() {
+systype=$(uname -s)
 
-echo "Please wait for a while to bring aws instances up"
+if [[ $systype == "Linux" ]]; then
+	echo "Installing Azure CLI for Azure Authentication"
+	curl -sL https://aka.ms/InstallAzureCLIDeb | sudo bash
+elif [[ $systype == "Darwin" ]]; then
+	echo "Installing Azure CLI for Azure Authentication"
+	brew update && brew install azure-cli
+else
+	echo "System should be either Mac or Linux"
+	exit 0
+fi
+}
 
-sleep 60
-cd ../ansible
-ansible -m ping -i inventory all
-ansible-playbook -i inventory prerequisites.yaml
-ansible-playbook -i inventory k8s.yaml
+terraforminstall() {
+	systype=$(uname -s)
 
+if [[ $systype == "Linux" ]]; then
+        echo "Installing Terraform"
+        curl -sL https://raw.github.com/robertpeteuil/terraform-installer/master/terraform-install.sh > terraform-install.sh
+        chmod +x terraform-install.sh
+        ./terraform-install.sh
+	rm -rf terraform-install.sh
+elif [[ $systype == "Darwin" ]]; then
+        echo "Installing Terraform"
+        brew tap hashicorp/tap
+        brew install hashicorp/tap/terraform
+else
+        echo "System should be either Mac or Linux"
+        exit 0
+fi
+}
+
+installansible() {
+systype=$(uname -s)
+if [[ $systype == "Linux" ]]; then
+        echo "Installing Ansible"
+	os=$(cat /etc/os-release | grep -iw ID | awk -F'=' '{print $2}')
+	version=$(cat /etc/os-release | grep -i VERSION_CODENAME | awk -F'=' '{print $2}')
+	if [[ $os == "ubuntu" && $version != "focal" ]]; then
+		echo "Installing Ansible"
+        	sudo apt-add-repository ppa:ansible/ansible -y
+        	sudo apt update
+        	sudo apt install ansible -y
+	elif [[ $os == "ubuntu" && $version == "focal" ]]; then
+		echo "Installing Ansible"
+		sudo apt update
+        	sudo apt install ansible -y
+	elif [ $os == "rhel*" ]; then
+		version=$(cat /etc/os-release | grep VERSION_ID | awk -F'=' '{print $2}')
+		if [ $version == "*7.*" ]; then
+			sudo subscription-manager repos --enable rhel-7-server-ansible-2.9-rpms
+			sudo yum install ansible -y
+		elif [ $version == "*8.*" ]; then
+			sudo subscription-manager repos --enable ansible-2.9-for-rhel-8-x86_64-rpms
+			sudo yum install ansible -y
+		fi
+	fi
+elif [[ $systype == "Darwin" ]]; then
+        echo "Installing Ansible"
+        brew install ansible
+else
+        echo "System should be either Mac or Linux"
+        exit 0
+fi
+}
+
+if [[ $1 == "azure" ]]; then
+	installansible
+	azurecli    
+	echo "Login to Azure Account using your browser"
+	az login
+	echo "Login Successfull"
+        terraforminstall
+	cd terraform/azure
+	terraform init
+	terraform plan 
+	terraform apply -auto-approve
+	terraform output inventory > ../../ansible/inventory
+	rm -rf azure.pem
+	terraform ouput tls_private_key > azure.pem
+	chmod 400 azure.pem
+
+	echo "Please wait for a while to bring azure vm's are up"
+
+	sleep 60
+	cd ../../ansible
+	ansible -m ping -i inventory all
+	ansible-playbook -i inventory prerequisites.yaml
+	ansible-playbook -i inventory k8s.yaml
+elif [[ $1 == "aws" ]]; then
+	installansible
+	terraforminstall
+	cd terraform/aws
+	terraform init
+	terraform plan
+	terraform apply -auto-approve
+	terraform output inventory > ../../ansible/inventory
+
+	echo "Please wait for a while to bring aws instances up"
+
+	sleep 60
+	cd ../../ansible
+	ansible -m ping -i inventory all
+	ansible-playbook -i inventory prerequisites.yaml
+	ansible-playbook -i inventory k8s.yaml
+else
+	echo -e "Usage\n\nAvailable Options:\n\n   aws:	To Provision Kubernetes Cluster on AWS\n   azure:	To Provision Kubernetes Cluster on Azure\n"
+fi

terraform/aws/output.tf

@@ -1,5 +1,5 @@
 data "template_file" "masters_ansible" {
-  template = "$${host} ansible_ssh_host=$${ip} ansible_ssh_port=22 ansible_ssh_user=ubuntu ansible_ssh_private_key_file=/Users/aguda/Downloads/AWS/awstest.pem ansible_ssh_extra_args='-o StrictHostKeyChecking=no'"
+  template = "$${host} ansible_ssh_host=$${ip} ansible_ssh_port=22 ansible_ssh_user=ubuntu ansible_ssh_private_key_file=../terraform/aws/awstest.pem ansible_ssh_extra_args='-o StrictHostKeyChecking=no'"
   count = var.master_count
   vars = {
     host = "${aws_eip.eip-master.*.public_dns[count.index]}"
@@ -8,7 +8,7 @@ data "template_file" "masters_ansible" {
 }
 
 data "template_file" "workers_ansible" {
-  template = "$${host} ansible_ssh_host=$${ip} ansible_ssh_port=22 ansible_ssh_user=ubuntu ansible_ssh_private_key_file=/Users/aguda/Downloads/AWS/awstest.pem ansible_ssh_extra_args='-o StrictHostKeyChecking=no'"
+  template = "$${host} ansible_ssh_host=$${ip} ansible_ssh_port=22 ansible_ssh_user=ubuntu ansible_ssh_private_key_file=../terraform/aws/awstest.pem ansible_ssh_extra_args='-o StrictHostKeyChecking=no'"
   count = var.worker_count
   vars = {
     host = "${aws_eip.eip-worker.*.public_dns[count.index]}"

terraform/azure/Readme.md

@@ -1,15 +1,13 @@
-<h1> Terraform on AWS </h1>
+<h1> Terraform on Azure </h1>
 
-For kubernetes multi node cluster we need to bring up multi nodes with help of terraform 
+For kubernetes with kubeadm multi node cluster we need to bring up multi nodes with help of terraform 
 
 - Prerequisites
-  - aws_access_key
-  - aws_secret_key
-  - aws_keypair_name
+  - azure account
 
-Make sure to update these values on varaiable.tf to access your aws account 
+Make sure you have an access to your azure account 
 
-If you want to modify any details like use another aws AMI, use variable.tf file to refer that
+If you want to modify any details like number of worker node, use variable.tf file to refer that
 
 ### Usage
 
@@ -35,5 +33,6 @@ To create a ansible inventory, run the below command . if you want to change the
 
 ```
 terraform output inventory > ../ansible/inventory
+terraform output tls_private_key > azure.pem
 ```
 

terraform/azure/output.tf

@@ -3,15 +3,15 @@ output "tls_private_key" {
 }
 
 data "template_file" "masters_ansible" {
-  template = "$${host} ansible_ssh_host=$${host} ansible_ssh_port=22 ansible_ssh_user=azureuser ansible_ssh_private_key_file=/Users/aguda/Downloads/azure/azure.pem ansible_ssh_extra_args='-o StrictHostKeyChecking=no'"
-  count = var.master_count
+  template = "$${host} ansible_ssh_host=$${host} ansible_ssh_port=22 ansible_ssh_user=azureuser ansible_ssh_private_key_file=../terraform/azure/azure.pem ansible_ssh_extra_args='-o StrictHostKeyChecking=no'"
+  count = var.master_count  
   vars = {
     host = "${azurerm_linux_virtual_machine.master[count.index].public_ip_address}"
   }
 }
 
 data "template_file" "workers_ansible" {
-  template = "$${host} ansible_ssh_host=$${host} ansible_ssh_port=22 ansible_ssh_user=azureuser ansible_ssh_private_key_file=/Users/aguda/Downloads/azure/azure.pem ansible_ssh_extra_args='-o StrictHostKeyChecking=no'"
+  template = "$${host} ansible_ssh_host=$${host} ansible_ssh_port=22 ansible_ssh_user=azureuser ansible_ssh_private_key_file=../terraform/azure/azure.pem ansible_ssh_extra_args='-o StrictHostKeyChecking=no'"
   count = var.worker_count
   vars = {
     host = "${azurerm_linux_virtual_machine.worker[count.index].public_ip_address}"
@@ -29,4 +29,4 @@ data "template_file" "inventory" {
 
 output "inventory" {
   value = "${data.template_file.inventory.rendered}"
-}
+}