Myths about DevOps
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Kubernetes version 1.32 was recently released. Let's go over the main changes and improvements in this version: 👉 the ability to output the stderr stream separately in kubectl logs. Previously a combined log of stdout & stderr was output 👉 the ability to set resources at the pod level. Previously this was only …

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👉 SLO (Service Level Objective) is a measure that defines the target level of availability or performance of a service provided to a user. It's part of a service quality agreement (SLA), where the SLO acts as a specific metric that needs to be achieved. For example, an SLO might state that a web service must be …

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Let's think it through: is it worth becoming a team lead? 👾 It's not uncommon for a specialist to switch from a team lead role back to being an individual-contributor engineer. And there are reasons for that. But let's start with the upsides. ➕Pros of being a team lead: A leadership role means less hands-on work and …

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A recent (yet another) outage in Yandex.Cloud nudged me toward this topic, in which we'll try to define the areas of responsibility and ways to protect yourself. 🧨 Incidents happen, whether it's a cloud or a server in a data center. Anything can happen: fire, flood, a drone strike, malicious actions, and so on. As the …

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How do I create courses at DevopsTrain? To deliver the material to learners in an accessible way and back it up with enough hands-on practice, I've refined a method that I'd like to share. 1️. Building the list of sections: Once I've decided to create a given course, I put together a list of sections. At this stage I …

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Continuing the story about migrating to NixOS Part 3. The migration itself. Interestingly, I only use USB flash drives to install a new OS; the rest of the time I don't need them. So for the second time in 5 years I dusted one off and flashed the NixOS image onto it with dd. At least it wasn't a CD-R, like I had to do …

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Let's break down a popular question from an interview for a DevOps engineer position and how you should answer it: Question: What is virtual memory? Answer: virtual memory is a mechanism that creates the illusion, for users and processes, that they have more physical memory (RAM) than is actually present on the …

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How Murphy's law works in devops Let me tell you how I spent the last week of August and the beginning of September... It just so happened that out of our entire devops team I was left on my own — you know how it is, vacation season and all that. Fine, not the first time, nothing unusual. But I ended up looking after a …

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Let's continue the series of notes about migrating to NixOS. Part 2. Preparation 1️⃣ Once the decision to migrate had been made, I needed to figure out how to do it as painlessly as possible while accounting for the specifics of NixOS, such as, for example, the declarative configuration of the whole system. 🤓 I read …

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