Category Archives: Virtualization

In computing, virtualization refers to the act of creating a virtual version of something, including virtual computer hardware platforms, storage devices, and computer network resources.

Arch Linux: a DNS Mystery – VPN, systemd-resolved, and Unbound
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21 May 2026

I’d been wrestling with the problem of accessing AWS EKS from the office for a long time – finally lost my patience and figured it out 🙂 Here’s the problem: there’s an AWS EKS cluster with both Public and Private endpoints for the API. Working from my office laptop, sometimes requests to it go through… Read More: Arch Linux: a DNS Mystery – VPN, systemd-resolved, and Unbound0… »

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VictoriaTraces: Tracing, Observability, and OpenTelemetry
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19 May 2026

On the project, we’ve gradually grown to the point where it’s time to have proper tracing – to build real observability, not just monitoring. A long time ago I did something similar with Jaeger – a monster, and it kind of stayed in my drafts from 2019 or 2020. Since right now our entire stack… Read More: VictoriaTraces: Tracing, Observability, and OpenTelemetry0 (0) »

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OpenTelemetry: OTel Collectors in Kubernetes and VictoriaMetrics Stack integration
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16 May 2026

Today let’s talk about how to run OpenTelemetry in Kubernetes and integrate it with the VictoriaMetrics stack – VictoriaMetrics for metrics, VictoriaLogs for logs, and VictoriaTraces for traces. Actually, this post wasn’t planned at all, and once a draft did appear – it was supposed to be the third in the series, but in the… Read More: OpenTelemetry: OTel Collectors in Kubernetes and VictoriaMetrics Stack integration0 (0) »

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FreeBSD: Jails Networking and Container Management with Bastille
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4 May 2026

Sometimes on FreeBSD you need to run services that aren’t officially supported by FreeBSD, and this post actually came about because I was installing Open WebUI on my NAS – and Open WebUI was easier to set up on Linux. So I spun it up in a FreeBSD Linux jail, and to create the container… Read More: FreeBSD: Jails Networking and Container Management with Bastille0 (0) »

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Hermes Agent: Running an AI Agent in a FreeBSD Jail with Bastille
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3 May 2026

I’ll write about Hermes Agent itself and what it can do separately – today it’s about how to run it on FreeBSD. Yesterday I played around with it on my Arch Linux – now I want a more production setup. I’ll be running it on my NAS with FreeBSD, and obviously only inside a FreeBSD… Read More: Hermes Agent: Running an AI Agent in a FreeBSD Jail… »

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Claude Code: creating Kubernetes debugging AI Agent for VictoriaMetrics
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30 April 2026

While I’m working on a series of posts about setting up and using Claude Code, here’s a quick example of building my own AI Agent for VictoriaMetrics and Kubernetes, “wrapping” it into a Claude Code Plugin, and creating my own Claude Code Marketplace where similar plugins for developers on my project will live. The general… Read More: Claude Code: creating Kubernetes debugging AI Agent for VictoriaMetrics5 (2) »

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AWS: Setting up Okta SSO with AWS IAM Identity Center
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31 March 2026

In the previous part of the Okta series we set up SSO for Grafana (see Okta: configuring Grafana SSO with OIDC and Role mapping) – now for a more interesting task: configuring SSO for AWS, with not just login but also user provisioning. Okta has a ready-made AWS IAM Identity Center App that lets you… Read More: AWS: Setting up Okta SSO with AWS IAM Identity Center0… »

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VictoriaMetrics: Basic Monitoring for AWS, Linux, NGINX, and PHP
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28 March 2026

The RTFM migration from DigitalOcean to AWS went smoothly, and I’m gradually settling in. New infrastructure, everything new – so for the first while I want to keep a close eye on the server and blog state, which means setting up basic monitoring for WordPress: NGINX, PHP-FPM, the database, and the infrastructure running it all.… Read More: VictoriaMetrics: Basic Monitoring for AWS, Linux, NGINX, and PHP5 (1) »

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AWS: Amazon Linux – Sending Email with Postfix via Gmail
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16 March 2026

Continuing the setup of the new RTFM server. The next step is configuring the ability to send mail from EC2, since both important messages for the root user and RTFM itself need to send emails. I was thinking of using AWS Simple Email Service – purely to refresh my memory on how to work with… Read More: AWS: Amazon Linux – Sending Email with Postfix via Gmail1… »

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AWS: Increasing the EBS volume size on an EC2 instance running Linux
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16 March 2026

Every time I need to do this, I have to look it up, even though I’ve written about it somewhere before – but it was a long time ago: manually increasing the disk size on an AWS EC2. You get used to Kubernetes, where it’s enough to just change a value in a PersistentVolumeClaim, and… Read More: AWS: Increasing the EBS volume size on an EC2 instance… »

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