DevOps - Çomak's Notes on Software

Terraform Basics Refresher

Quick Terraform refresher: what Terraform is, core concepts, dependency management, execution model, files, and best‑practice workflow for multi‑env IaC.

1. What Terraform Is

Terraform is an Infrastructure as Code (IaC) tool by HashiCorp for defining, provisioning, and managing cloud infrastructure declaratively via HCL (HashiCorp Configuration Language).

Terraform manages infrastructure lifecycle — create, update, destroy — by comparing your desired configuration to the actual state.

2. Core Concepts

a. Providers

Plugins that enable Terraform to interact with cloud or service APIs.

provider "aws" {
  region = "eu-central-1"
}

CI/CD as Code Part IV – Stateless Jenkins Docker Container: Jobs as Code – Advanced

In the previous article of this example series, we created a stateless Jenkins docker container that can be initialized solely by scripts. In that example, a seed job for the jobDsl plugin was also implemented. This job was later on used to create an automated simple Jenkins job,-inline-. Now we are ready to shape our Stateless Jenkins container to meet more advanced requirements, – advanced jobs as code-.

We will extend previous seedJob implementation further to create more complex jobs programmatically. Our extended seedJob will poll a job definition repository, and it will gather the information on how to create new jobs for some other remote repositories.

CI/CD as Code Part III – Stateless Jenkins Docker Container – Jobs as Code

The purpose of these sample series is to create a simple set of examples, which showcases CI/CD as Code, using Jenkins. The main goal is to create a stateless Jenkins Docker Container setup, which can be bootstrapped from a set of configuration files, and scripts so that many problems related to maintenance of the infrastructure, and other operational issues are reduced.

The previous article of the series summarizes the steps to install and set up Jenkins programmatically. To see how it’s done, please visit CI/CD as Code Part II – Installing and Setting up Jenkins Programmatically

First Steps to “job as code”

Check out this example from here

We are going to introduce the necessary plugins to achieve the goal of programmatic job descriptions in this step and configure them accordingly via programmatic means.

CI/CD as Code Part II – Installing and Setting up Jenkins Programmatically

Stateless Jenkins Container with Docker: Installing and setting up Jenkins Programmatically

The purpose of this sample series is to create a simple set of examples, which showcases CI/CD as Code, using Jenkins. The primary goal is to create a stateless CI/CD setup, which can be bootstrapped from a set of configuration files and scripts so that many problems related to maintenance of the infrastructure and other operational issues are reduced.

We created a containerized Jenkins instance in the previous part of these example series. Moreover, we did most of the installation and configuration work via the user interfaces. In contrast to this, our target in this step is to automate most of the manual work so that we are one step closer to a stateless Jenkins Docker container.

Checkout the example code from here

In summary, this basic setup will handle the following on behalf of an actual human being:

Creation of the user(s) on Jenkins programmatically.
Installation of basic plugins to get up and running with Jenkins.

CI/CD as Code Part I – Introduce a stateful Jenkins Docker Container

The purpose of this sample series is to create a simple set of examples, which showcases CI/CD as Code, using Jenkins. The primary goal is to create a stateless CI/CD setup, which can be bootstrapped from a set of configuration files and scripts so that many problems related to maintenance of the infrastructure and other operational issues are reduced.

We are going to follow a step-by-step approach in this series. You can reach each step using the links below.