Launch Droplet in Digital ocean using terraform

Setps to install Terraform:

1. sudo apt-get -y install / sudo yum install -y zip unzip (if these are not installed)
2. wget https://releases.hashicorp.com/terraform/0.9.8/terraform_0.9.8_linux_amd64.zip
3. unzip terraform_0.9.8_linux_amd64.zip
4. sudo mv terraform /usr/local/bin/
5. Confirm terraform binary is accessible: terraform --version

Step to create Droplet and install Apache

1. Generate a api token from the digitalocean UI and export it to the terminal,

    $export DO_PAT=YOUR_PERSONAL_ACCESS_TOKEN
   

2. Get the MD5 SHA of you rsa_pub key:

   To get the SHA values:

    $ssh-keygen -E md5 -lf ~/.ssh/id_rsa.pub | awk '{print $2}'
    
    MD5:68:d3:3e:fr:rg:rt:67:67:34:56:67:as:rf
   

2.2 Add you rsa_pub key to your Digital ocean

3. Above are the variables which we will be using in our droplett creation

4. Initailase the project directory.

    $terraform init
   

5. Now test the project sing the terraform plan, it downloads the respective plugin.

    $terraform plan \
    	-var "do_token=${DO_PAT}" \
    	-var "pub_key=$HOME/.ssh/id_rsa.pub" \
    	-var "pvt_key=$HOME/.ssh/id_rsa" \
    	-var "ssh_fingerprint=your_SHA_value"  #with out MD5 prefix 68:d3:3e:fr:rg:rt:67:67:34:56:67:as:rf 
   

6. Now create the provider.tf file which has all the variables that we will be using in the project. $ vi mytest.tf

    variable "do_token" {}
    variable "pub_key" {}
    variable "pvt_key" {}
    variable "ssh_fingerprint" {}
   
    provider "digitalocean" {
   	token = "${var.do_token}"
    }
   

   Save and Exit

7. Now create the mytest.tf file which contains the resourse of creating the droplets.

   $vi mytest.tf

    resource "digitalocean_droplet" "web" {
    	image = "ubuntu-16-04-x64"
    	name = "mytest"
    	region = "blr1"
    	size = "s-1vcpu-1gb"
    	private_networking = true
    	ssh_keys = [
      	"${var.ssh_fingerprint}"
    	]
   
    connection {
      	user = "root"
      	type = "ssh"
      	private_key = "${file(var.pvt_key)}"
      	timeout = "2m"
    }
   
    provisioner "remote-exec" {
    	inline = [
      	"export PATH=$PATH:/usr/bin",
      	# install tomcat
       	"sudo apt-cache search apache",
       	"sudo apt-get install apache2"
       
      	 # install nginx
       	#"sudo apt-get update",
       	#"sudo apt-get -y remove nginx",
    	]
      }
    }
   

   Save and Exit.

8. Now run the terraform plan and then apply cmd.

    $terraform plan \
    	-var "do_token=${DO_PAT}" \
    	-var "pub_key=$HOME/.ssh/id_rsa.pub" \
    	-var "pvt_key=$HOME/.ssh/id_rsa" \
    	-var "ssh_fingerprint=your SHA value"
   

   (It diplays the output stating "mytest" droplet will be created)

    $terraform apply \
    -var "do_token=${DO_PAT}" \
    -var "pub_key=$HOME/.ssh/id_rsa.pub" \
    -var "pvt_key=$HOME/.ssh/id_rsa" \
    -var "ssh_fingerprint=your SHA value" 
   

   (It launches a droplet and install Apache at port 80)