DevOps & SRE notes – Telegram
DevOps & SRE notes
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Helpful articles and tools for DevOps&SRE

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In the article "How Containers Work," the author provides an in-depth exploration of the fundamental concepts and mechanisms behind container technology. Containers have transformed the software development and deployment landscape by offering a lightweight, portable, and efficient way to run applications. This article breaks down the core components of containers, such as namespaces, cgroups, and the container runtime, explaining how they interact to isolate and manage application processes. By understanding the inner workings of containers, readers can gain insights into their advantages, how they differ from traditional virtualization, and best practices for leveraging them in modern software development workflows.

https://ikouchiha47.github.io/2024/02/05/how-containers-work.html
This article delves into effective strategies for enhancing Continuous Integration (CI) build speeds and reducing operational costs. It provides a comprehensive guide on optimizing CI processes by implementing parallel test execution, caching build artifacts, and reorganizing workflows into distinct jobs to improve efficiency and decrease resource usage.

https://owaiskhan.me/post/improve-ci-build-time-and-reduce-cost
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Cleaner is a Kubernetes controller that identifies unused or unhealthy resources, helping you maintain a streamlined and efficient Kubernetes cluster. It provides flexible scheduling, label filtering, Lua-based selection criteria, resource removal or update and notifications via Slack, Webex and Discord. it can also automate clusters operations.

https://github.com/gianlucam76/k8s-cleaner
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This article offers practical advice on essential tools to have installed on Linux servers to quickly address performance issues during a crisis. It outlines a recommended toolkit for immediate diagnostics and troubleshooting, highlighting the importance of having these tools pre-installed to avoid delays in resolving urgent problems. The discussion includes detailed scenarios illustrating potential challenges and solutions when dealing with system outages, underscoring the utility of preparedness in crisis management.

https://www.brendangregg.com/blog/2024-03-24/linux-crisis-tools.html
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The blog post challenges the notion that cybersecurity is uniquely complex within the software industry. She argues that many of the issues faced by cybersecurity are similar to those encountered by other engineering disciplines. Through critical analysis and comparison, Shortridge advocates for integrating cybersecurity with other engineering efforts to improve overall system resilience and reduce inefficiencies caused by treating cybersecurity as a separate, esoteric field.
https://kellyshortridge.com/blog/posts/cybersecurity-isnt-special/
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