Terraform Beginner Bootcamp 2023

Semantic Versioning!!

This project will use semantic versioning for tagging semver.org

The format:

MAJOR version when you make incompatible API changes
MINOR version when you add functionality in a backward compatible manner
PATCH version when you make backward compatible bug fixes

Install the Terraform CLI

considerations with the terraform cli changes

The terraform CLI install instructions have changed due to gpg keyring changes. we needed to refer to the latest install CLI instrucitons Install the Terraform CLI

Considerations for Linux distribution

This project is built against Ubuntu. Must check you linux distribution. https://beebom.com/how-check-linux-version/

Example of checking OS version

$ cat /etc/os-release
PRETTY_NAME="Ubuntu 22.04.3 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.3 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=jammy

Refactoring bash scripts

The terraform CLI gpg deprication created a significant increase in the amount of code. so we created a bash script .bin/install_terraform_cli to install the terraform cli

keeps things tidy in the Gitpod task file (.gitpod.yml)
better portability for other projects that need to install the CLI

Shebang

A shebang tells the bash script what program will interpret the script https://en.wikipedia.org/wiki/Shebang_(Unix)

For this project we used this format #!/usr/bin/env bash

Execution considerations

When executing the bash script we use ./ to execute the bash script

./bin/install_terraform_cli

source ./bin/install_terraform_cli

Linux permissions considerations

We needed to change the linux permissions in order for the file to be executable at the user mode

chmod u+x ./bin/install_terraform_cli

https://en.wikipedia.org/wiki/Chmod

Github lifecycle (Before, Init, command)

We need to be careful when using Init because it will not rerun if restarting an existing workspace. That is why the gitpod.yml file uses before instead of init

https://www.gitpod.io/docs/configure/workspaces/tasks

Working with Env Vars

Can list out all environment vars using the env command
Can filter specific env vars using grep. ex: end | grep AWS_
set using export VAR_NAME=varValue
Remove env var using unset VAR_NAME
Print env var with echo $VAR_NAME

Scoping Env Vars

In order to set Env Vars across all your terminal windows into the future, you need to set it in your .bash_profile

You can persist env vars across all GitPod workspaces in your account using gp env VAR_NAME=VarValue

Bijesse / old-terraform-beginner-bootcamp-2023