it366 setup

Linux Recommended

• It is highly recommended that you use a Linux machine to setup the following
• If you do not have one, you can install a Linux virtual machine inside VMware and setup everything using the vm

Pre-requisites

Install AWS Command Line Tool and Terraform

Linux

• Open Command Prompt in Ubuntu - or your command prompt on Linux/Mac
• Add unzip (it is already installed on Mac)
  • sudo apt install unzip -y
• Install AWS CLI
  • curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
  • unzip awscliv2.zip
  • sudo ./aws/install
  • aws --version
• Add $HOME/.local/bin to path

  • vim .bashrc
        if [ -d "$HOME/.local/bin" ] ; then
            PATH="$HOME/.local/bin:$PATH"
        fi
    source .bashrc
    

• Install Terraform
  • curl "https://releases.hashicorp.com/terraform/0.14.4/terraform_0.14.4_linux_amd64.zip" -o "terraform.zip"
  • unzip terraform.zip
  • sudo mv terraform /usr/local/bin/
  • terraform --version

Windows

• Install AWS CLI (https://awscli.amazonaws.com/AWSCLIV2.msi)

Logging in to AWS Educate and Get the Keys

• Log in to https://www.awseducate.com

• Click the My Classrooms link

• Click the Go to classroom button alongside your desired classroom

• Under the Your AWS Account Status area, click the Account Details button

• Show the AWS CLI information - copy this into your ~/.aws/credentials file

  • Open WSL
  • mkdir ~/.aws
  • vim ~/.aws/credentials

    •   [default]
        aws_access_key_id=QWERTYUIOPASDFGHJKL
        aws_secret_access_key=tHisIsnOtanActUal/Key
        aws_session_token=Vy0suaL4NT1PrSLaPLZAT8fgbNpwhw07ByUvBZ6F0BSITkbUyrIOFUdQu6HDYVhskoQt4OGvTzi0PdLQwvI8FNnMrkESlFxeLSxVy0suaL4NT1PrSLaPLZAT8fgbNpwhw07ByUvBZ6F0BSITkbUyrIOFUdQu6HDYVhskoQt4OGvTzi0PdLQwvI8FNnMrkESlFxeLSxVy0suaL4NT1PrSLaPLZAT8fgbNpwhw07ByUvBZ6F0BSITkbUyrIOFUdQu6HDYVhskoQt4OGvTzi0PdLQwvI8FNnMrkESlFxeLSx
      

  • ATTENTION: The token generated renews quickly. Make sure you do not wait too long to start setting up everything, otherwise an error will appear.

• Click the AWS Console button to log into the console.

  • At the top right; ensure the region you are in is N. Virginia

• Setting credentials in Windows https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-files.html

Part One Setup

Terraform Infrastructure

• mkdir ~/GitRepos
• cd ~/GitRepos
• git clone https://github.com/jgiboney/ITC-366.git
• cd ITC-366/partOne
• terraform init
• terraform apply
• Accept the changes yes
• If Terraform complains about credentials, go back to the Logging in to AWS Educate and Get the Keys section and re-create your ~/.aws/credentials file
• This will take a few minutes, but you should see the infrastructure appear in the AWS Console.
• The output from the terraform will give you details for logging in to the NAT Instance and the Linux Instance
  • chmod the PEM file
    • chmod 400 my-key.pem
  • ssh into the NAT instance
    • ssh -i my-key.pem [email protected]
  • log out of the NAT instance
    • exit
  • use the tunnel script to log into the private linux instance via the NAT
    • ssh -f -i my-key.pem [email protected] -L 10000:172.31.129.100:22 sleep 5; ssh -i my-key.pem -p 10000 [email protected]
  • check that NAT is setup correctly
    • ping google.com
• If the above commands do not work for ssh connections, try using the following format instead
  • All of the information of your instance can be found on AWS EC2.
    • ssh -i "[publicKey.pem]" [your username]@[your public ipv4 DNS]
  • The command should look something like this:
    • ssh -i "my-key.pem" [email protected]
• Once you are finished, you can use terraform destroy to remove the entire infrastructure if you want.

Part Two Setup

• Infrastructure in this part does not collide with part 1. They can run together or separately.
• You DO NOT need to destroy everything in part one to run part two.

Terraform Infrastructure

• Navigate to your GitHub folder that you cloned from part one
• cd partTwo
• terraform init
• terraform apply
• Accept the changes yes
• If Terraform complains about credentials, go back to the Logging in to AWS Educate section and re-create your ~/.aws/credentials file
• This will take a few minutes, but you should see the infrastructure appear in the AWS Console.

Routing in AWS

• Part Two creates three subnets in AWS
  • 172.31.101.0/24
  • 172.31.102.0/24
  • 172.31.103.0/24
• And three EC2 instances
  • 2 Clients in the 101 and 102 subnets
  • 1 Router in the 103 Subnet
• Security Groups
  • 101 and 102 can only talk to the router

Try the following if your machines cannot ping each other

• Turn on IP Forwarding on the router (SSH into the router)

echo 'net.ipv4.ip_forward=1' | sudo tee -a /etc/sysctl.conf
sysctl -p /etc/sysctl.conf

• Add routes to the route tables in the clients (SSH into the clients). Change the x, y, and z depending on the client and instance.

sudo route add -net 172.31.10x.0 netmask 255.255.255.0 gw 172.31.y.z

Note

• Source/Destination Checks must be turned off for the router and the added network cards for traffic to flow

source_dest_check = false

• Once you are finished, you can use terraform destroy to remove the entire infrastructure.

Resources for Mac users

• https://docs.aws.amazon.com/cli/latest/userguide/install-cliv2-mac.html

• https://www.terraform.io/downloads.html

• For Mac Terraform install. Download the above terraform download then move the terraform file to /usr/local/bin