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.

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) »

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… »

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… »

AWS: ALB and Cloudflare – Configuring mTLS and AWS Security Rules
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16 March 2026

While preparing the infrastructure for migrating RTFM from the DigitalOcean server to AWS (see AWS: basic infrastructure setup for WordPress) I decided to also try AWS ALB mutual authentication (for some reason I thought this feature launched at the last re:Invent, at the end of 2024, but it’s actually been around since late 2023 –… Read More: AWS: ALB and Cloudflare – Configuring mTLS and AWS Security… »

AWS: Self-Managed EC2 NAT Gateway vs AWS Managed NAT
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15 March 2026

I looked at the costs for the infrastructure described in the previous post AWS: basic infrastructure setup for WordPress, and let out a heavy sigh: One NAT Gateway is a quarter of my AWS spend, and even with AWS Credits I can’t help feeling a bit stingy about it. There’s an option to remove the… Read More: AWS: Self-Managed EC2 NAT Gateway vs AWS Managed NAT0 (0) »

AWS: Basic Infrastructure Setup for WordPress
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15 March 2026

It’s time for a major server upgrade for RTFM, which I usually do by migrating to a new server – because I also do various other upgrades along the way, like upgrading the PHP version or even migrating to a different cloud. This time I’m planning to move from DigitalOcean, where RTFM has been hosted… Read More: AWS: Basic Infrastructure Setup for WordPress0 (0) »

Backblaze: A First Look at B2 Cloud Storage
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14 March 2026

This post is technically part of the home NAS setup series on FreeBSD (see the beginning here – FreeBSD: Home NAS, part 1 – ZFS mirror setup), but I’ll publish it separately. I already have backup automation configured (there will be posts about that too), and right now data from the NAS is pushed to… Read More: Backblaze: A First Look at B2 Cloud Storage0 (0) »

FreeBSD: Home NAS, part 9 – data backup to AWS S3 and Google Drive with rclone
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22 January 2026

In the previous post of the Home NAS on FreeBSD setup series, we got acquainted with restic – a utility for working with backups that supports encryption, snapshots, and change history; see FreeBSD: Home NAS, part 8 – backup of NFS and Samba data with restic. However, in addition to archival data in S3, I… Read More: FreeBSD: Home NAS, part 9 – data backup to AWS… »

Kubernetes: monitoring processes with process-exporter
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1 November 2025

We are debugging one issue with memory usage in Kubernetes Pods, and decided to look at the memory and number of processes on the nodes. The problem is that a Kubernetes Pod with Livekit usually consumes about 2 gigabytes of memory, but sometimes there are spikes of up to 10-11 gigabytes, which causes the Pod… Read More: Kubernetes: monitoring processes with process-exporter0 (0) »

AWS: Monitoring AWS OpenSearch Service cluster with CloudWatch
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1 November 2025

Let’s continue our journey with AWS OpenSearch Service. What we have is a small AWS OpenSearch Service cluster with three data nodes, used as a vector store for AWS Bedrock Knowledge Bases. Previous parts: AWS: Introduction to OpenSearch Service as a vector store AWS: Creating an OpenSearch Service cluster and configuring authentication and authorization Terraform:… Read More: AWS: Monitoring AWS OpenSearch Service cluster with CloudWatch0 (0) »