If you run any general Linux system – you likely run systemd. What do you install when you need an OS container? The answer can be: “nothing“. There is a container engine under the hood.In systemd. Its features are: systemd-nspawn is a light-weight, easy-to-configure container engine.Ready to use. You just don’t know about it. The Tool: systemd-nspawn…
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Managing Podman containers with OpenTofu is a powerful way to automate your containerization workflow. OpenTofu, a fork of Terraform, allows you to manage infrastructure as code, making it easier to create, destroy, and manage your containers effectively.
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Installing and setting up OpenTofu on Debian Bookworm can be accomplished with a few straightforward steps. OpenTofu is an open-source infrastructure-as-code tool that serves as a drop-in replacement for Terraform, making it a popular choice for managing cloud resources.
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In cloud computing, egress costs represent a significant yet often overlooked aspect of cloud expenditure. These costs arise when data is transferred out of a cloud service, whether to another cloud, on-premises infrastructure, or the public internet. Unlike data ingress, which is typically free, egress charges can accumulate rapidly, leading to unexpected financial burdens for…
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OpenTofu is an emerging open-source tool that aims to redefine infrastructure management within the DevOps community. Born from the need for a truly open-source alternative to Terraform, OpenTofu offers a community-driven approach to infrastructure as code (IaC), providing developers and operations teams with a flexible and robust framework for managing cloud resources.
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In the fast-evolving world of IT and DevOps, automation is critical. Teams are continually tasked with accelerating deployment processes, minimizing downtime, and ensuring scalability. While in-house teams bring invaluable knowledge of internal systems and workflows, bringing in external contractors – specifically, skilled professionals with expertise in automation – can be a powerful strategy to meet…
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Tom’s IT Cafe’s upcoming free training is under heavy development: Docker Basics for beginner system administrators, developers and those who want to learn containerization with the industry standard Docker solution. Enhance your CI/CD, automation and system testing with containers. Stay tuned! You will learn how to install and use Docker in a Linux environment.
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If you want to discuss topics of the site with other technology-minded people, or you need some technical help, maybe you have a question, then you can join our growing Discord community: https://discord.gg/YbSYGsQYES If you have any difficulties with the invite link, leave us a comment below! For others who like older text based protocols,…
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You can start your DevOps career with these free (as free beer) training courses: More to come! Happy learning!
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Over the past decade, Bitcoin has emerged as a groundbreaking force, challenging traditional notions of currency and finance. Born out of the aftermath of the 2008 financial crisis, Bitcoin represents a decentralized and borderless form of digital currency that operates on a peer-to-peer network.
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In the realm of cryptography, the Vigenère cipher stands as a testament to the ingenuity and complexity of early encryption methods. I have to admit that it is my personal favorite of the “old” ciphers. The Vigenère cipher, often attributed to Blaise de Vigenère, was actually first described by Giovan Battista Bellaso in 1553. Bellaso’s…
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Email remains one of the most critical communication tools for individuals and businesses. To ensure a secure and efficient email infrastructure, many opt for a self-hosted mail server. In this post, I will guide you through the process of installing and configuring iRedMail on Debian Bookworm to serve the a registered domain. iRedMail is a…
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A reverse proxy is a server that sits in front of web servers and forwards client requests to those web servers. It acts as an intermediary, intercepting and inspecting incoming client requests before forwarding them to the web server. Reverse proxies can provide additional levels of abstraction, control, security, and performance optimization. They are commonly used for load balancing, web…
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Apache2 is a free and open-source web server that allows users to deploy their websites on the internet. It was first released in 1995 and is maintained by the Apache Software Foundation. Apache is fast, reliable, and secure, and it runs on a large percentage of web servers, making it one of the most popular choices…
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In today’s digital era, privacy and data security have become paramount concerns. With the increasing threat of cyber crime and unauthorized access to sensitive information, it’s crucial to adopt robust encryption techniques to protect your files and text. One such method is GPG (GNU Privacy Guard), a widely acclaimed encryption tool that ensures the confidentiality…
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