Category: Devops
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Mastering Ansible Variables: A Guide with Practical Examples
Ansible variables store and manipulate data that can be accessed and utilized across playbooks, roles, and tasks. They allow for dynamic configurations and flexible automation by enabling the abstraction of values that may change based on different environments or use cases. In this tutorial, I will introduce Ansible variables and explore their usage with examples.…
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Step-by-Step Guide to Installing Python OpenAI SDK on Windows and macOS
2024 will most likely be the year when many admins will be faced with deploying AI systems for the first time. Once you play a little with the OpenAI API, you will begin to understand why Large Language Models (LLMs) are not just useful for chatbots. If AI companies can find a way to fund…
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Steps to Resolve Merge Conflicts in Git: Dealing with Modify/Delete Issues
In my previous article, I discussed merge conflicts, specifically line merge conflicts, and how to resolve them on GitHub. In this article, I will focus on another type of merge conflict, the modify/delete conflict, and how to resolve it using Git. Modify/delete conflicts occur when, on one branch in the merge operation, a file has…
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Step-by-Step Guide on Creating an Amazon Machine Image (AMI) for an EC2 Instance using Bash and PowerShell Scripts
The provided Bash and PowerShell script helps automate the creation of Amazon Machine Images (AMIs) from existing AWS Elastic Compute Cloud (EC2) instances. This is particularly useful for creating point-in-time backups or disaster recovery. I mostly use the script to quickly clone an EC2 instance for testing or troubleshooting. Create an AMI in the AWS…
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Mastering Notepad++: Exploring Search, Replace Functions with Regex and Plugins
The free and widely-used editor for Windows supports not only basic search and replace functions but also regular expressions. A helpful plugin assists in formulating regex, providing real-time expression validation. However, for many tasks you don’t need regex; built-in functions and plugins often offer simpler solutions. The raw output of scripts is often extensive and…
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Step-by-Step Guide to Installing Minikube on Windows
Minikube is an ideal solution for setting up a Kubernetes cluster for a test or development environment. It only requires a single node, optionally as a virtual machine. To install Minikube on Windows, several preparations are required, including the installation of Docker. The first step to install Kubernetes on Windows 10/11 or Windows Server 2019/2022…
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Understanding Role-Based Access Control (RBAC) in Kubernetes
In a previous post in this Kubernetes guide, you learned about deploying stateful applications with Kubernetes StatefulSets. Today, we will discuss role-based access control (RBAC) in Kubernetes, which controls who can access Kubernetes cluster resources. It uses roles and role bindings to grant permissions to subjects, such as users, groups, or service accounts. Verify Kubernetes…
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Getting Started with Ansible: A Tutorial for Beginners
Ansible, an open-source automation platform, is rapidly gaining popularity among IT experts and organizations seeking simple yet powerful solutions for automation. It streamlines IT operations by automating configuration management, application deployment, and task automation. It speeds up tasks and ensures infrastructure consistency. This Ansible beginner tutorial will take you through the essential steps of getting…
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Exploring Nested Docker Containers: How to Run Docker Inside a Docker Container
Working with nested Docker containers has several use cases. In this article, I will discuss three methods to create a container inside a Docker container: Docker socket (Dood), dind tag, and Sysbox. You will learn about the advantages and disadvantages of each solution, and I will outline the downsides of nested containers. Use cases for…
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Step-by-Step Guide: Installing Loki and Visualizing Logs Using Grafana
Loki is an open-source log aggregation system developed by Grafana Labs and tailored for cloud-native and containerized apps. Loki is often used in conjunction with Grafana for log visualization. In this guide, I will explain how to install Loki and outline how you can integrate the log aggregation solution with Grafana. Grafana Loki benefits Here…