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Virtual Geek

Tales from real IT system administrators world and non-production environment

Blog posts : "devops"

Resolved Terraform Error: POST https api.github.com user repos 401 Requires authentication

I was receiving Error: POST https://api.github.com/user/repos: 401 Requires authentication [] while applying and deploying repository on github.com with Terraform. This error occurs because terraform is not able to authenticate to GitHub.com API and not able to perform the action.

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GitHub repository integration with Terraform Cloud to Deploy and Manage Azure

Streamline your infrastructure as code (IaC) workflows by integrating your GitHub repository with HashiCorp Terraform Cloud (HCP). This powerful combination enables automatic execution of Terraform plans and applies based on changes made to your infrastructure code, ensuring that every update to you…

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Azure OIDC OpenID Connect password less with GitHub Actions

This documentation describes in what way to organize GitHub Actions to authenticate with Microsoft Azure Entra ID using OpenID Connect (OIDC) for secure and automated deployments to Azure. This guide covers key ideas like credentials, federated identity, and customer-managed keys for data encryptio…

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Part 4.2 GitHub Actions manage Microsoft Azure Cloud with az CLI

In this article, I will guide through the procedure of securely keeping Azure credentials in GitHub Actions Repository Secrets and using them to authenticate with Azure CLI commands. This enables the execution of GitHub Actions workflows, automating various tasks and deployments in Azure. By storing…

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Part 4.1 GitHub Actions deploy azure resources with PowerShell

After successfully configuring and setting up Azure and Terraform in GitHub Actions, I embarked on a Proof of Concept (POC) to automate PowerShell scripts (Azure az module) using GitHub Actions. I meticulously automated all the job steps using PowerShell, with a primary focus on utilizing credential…

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Part 4 GitHub Actions deploy azure resources with Terraform backend

In this section, I'm leveraging the azurerm backend to keep the Terraform state (tfstate) file in an Azure Storage Account. This will make sure that the Terraform state is centralized and consistent across different environments and team members. Every time I push changes to my Terraform configurat…

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HTML JavaScript generate GUID

Here is a small HTML project I created to generate a new GUID each time the "Generate New GUID" button is clicked. Additionally, this project includes a feature that allows you to easily copy the generated GUID to your clipboard by clicking on a copy icon next to the GUID. The project uses basic HTM…

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Part 2 Terraform modules using a github.com repository as a source

In this article, I will guide you through the process of configuring a Terraform module hosted on GitHub.com as a source for the use inside Terraform module projects. In my previous blog (Part 1), I demonstrated how to set up a GitHub.com repository and branch using HashiCorp Terraform code.

To S…

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Terraform for_each for loop list of object without count example

While working with Terraform, I needed to deploy resources without relying on the count meta-argument. My variable was a list of objects, but using count resulted in index numbers being appended to the resource names. To avoid this, I opted to use the for_each argument to iterate over the list of ob…

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Terraform map of object for loop with if condition example

This article I will show the example of Terraform looping map of object variable type and using if condition to filter the map key value. In this demo I provided a map of object inside users variable. Following inside the locals variable, I am using logic for loop over map of objects and if cond…

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HashiCorp HCP Terraform Cloud backend configuration

HCP Terraform Cloud is a managed service presented by HashiCorp that permits users to run Terraform in a cloud-based environment. It provides a protected, scalable, and collaborative platform for infrastructure organizational automation.

HCP Terraform Cloud proposes numerous benefits, including:

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Configure multi node master and worker Kubernetes cluster on K3d docker

After configuring basic K3s (Kubernetes on Docker) setup on my lab with default commands. I found it created single node k8s cluster. I wanted a multi node Kubernetes cluster to be setup with multiple masters and workers.

As my K3d server and cluster is already installed and configured using wit…

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Terraform convert single string to list or set

Below are the few examples of Terraform on to converting single string to array of list or set. This code I was wanted in my one of my Azure automation task. In this example I have defined a variable justice_leage with same default value..

For conversion, In the first scenario I can use split()

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Terraform variable type list with for_each for loop examples

In this article I have explored all the examples on how to use list of strings with for_each for loop in Terraform resource and output block.

Microsoft Azure Terraform toset() for_each map list of string objects resource null_resource output variable block example.png

In this first block of example I have defined  variable named marvel, it's type is list and value has string names of superheroes inside [ ] squa…

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Terraform variable multiple validation advanced blocks example

In my previous article on configuring a Terraform module for an Azure Function App with a private endpoint and a storage account, I shown a section within the application_stack block where I needed to implement function apps stacks. Here in this article I focusing on advanced variable validation for…

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Terraform Azure function app with private endpoint and storage account

In this article I am creating Azure Function App linked to Private Endpoint and Storage Account using Terraform. This terraform configuration file will deploy all these resources within couple of minute.

In this automation Resource Group, User Assigned Identity, Virtual Network, Subnet, Private D…

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Terraform Azure provider passing multiple alias environment and credentials in child module

While working with Terraform modules I wanted to pass on multiple provider aliases with specific credentials and azure subscription details to child module. Ideas was to create resources with assigned privileged users. Non privileged users should not be able to create services in Azure.

In this…

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Terraform filter map and list object with if condition in for_each loop examples

In terraform there is no actual if else condition block. But still you can use if condition to filter map or list of objects to get the required keys or values. In below example I have scenario where I wanted to create Resource Group in Azure to defined locations only. Incase no data is provided or…

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Terraform variable precedence and priority

This is a informational article on how the variable precedence works in Terraform. This is how the priority is defined for variable when you use it in different ways. In the following diagram, it shows the information of variable priority matrix. Lower the number it has higher the priority and it w…

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Terraform Force-Unlock Command and Unlocking State file on Azure backend with PowerShell

While working on collaborative environment of Terraform deployments, you might encounter an error of acquiring the tf state locking issue. In Terraform word when backend is configured to store state file on remote. It limits multiple users from making changes to environment at the same time to avoid…

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