https://makvaz.com/post/ Recent posts from Aliaksei Karneyeu Hugo en Tue, 20 Jan 2026 00:00:00 +0000 https://makvaz.com/2026/01/20/book-learning-ebpf/ Tue, 20 Jan 2026 00:00:00 +0000 https://makvaz.com/2026/01/20/book-learning-ebpf/ I always knew that eBPF was one of those technologies hidden deep inside the kernel, far away from everyday users, but incredibly powerful. At work, I learned that Google Kubernetes Engine clusters using Dataplane V2 rely heavily on eBPF under the hood. That felt like a good opportunity to finally dive into something new, so I grabbed the book Learning eBPF from the office bookshelf. This post is my review of that book. https://makvaz.com/2024/06/20/postgresql-unknown-type-during-database-restore/ Thu, 20 Jun 2024 00:00:00 +0000 https://makvaz.com/2024/06/20/postgresql-unknown-type-during-database-restore/ I faced an interesting issue when I tried to restore a database from a backup. The error said: type "ltree" does not exist. ltree is a PostgreSQL extension, and this error can appear with any PostgreSQL extension. So how do we fix this error? https://makvaz.com/2022/10/30/thought-after-passing-google-certification/ Sun, 30 Oct 2022 00:00:00 +0000 https://makvaz.com/2022/10/30/thought-after-passing-google-certification/ On the 24th of October 2022 I successfully passed the “Google Cloud Professional Architect” certification and here I would like to share how I prepared for this exam, some pieces of advice on what to learn, and some of my thoughts on such kinds of exams in total. https://makvaz.com/2020/08/10/kubernetes-the-hard-way-on-laptop-setup-vms/ Mon, 10 Aug 2020 00:00:00 +0000 https://makvaz.com/2020/08/10/kubernetes-the-hard-way-on-laptop-setup-vms/ In previous post we overviewed how the Kubernetes cluster would look like and have installed some programs. Today we gonna set up Virtual Machines using VirtualBox and Vagrant. https://makvaz.com/2020/07/29/kubernetes-the-hard-way-on-laptop-preparation/ Wed, 29 Jul 2020 00:00:00 +0000 https://makvaz.com/2020/07/29/kubernetes-the-hard-way-on-laptop-preparation/ One of big steps in my preparation for the CKA exam was to deploy the Kubernetes cluster locally. I started with a great guide from Kelsey Hightower called “Kubernetes The Hard Way”(or simply KTHW) and found out that it was created only for Google Cloud Platform. I decided to adapt it to my needs so the cluster could be running on a laptop. In this series of posts I gonna show how to do this. https://makvaz.com/2020/05/27/vim-switch-between-files/ Wed, 27 May 2020 00:00:00 +0000 https://makvaz.com/2020/05/27/vim-switch-between-files/ I’ve been using Vim for about 5 years. During this time I tried other text editors and IDEs, in the end I always moved back. Some features I like in Vim, some I like in other IDEs. One such feature - is to switch between files. In today’s post, I would like to show how Vim allows to jump between files. https://makvaz.com/2019/07/15/aws-certification-preparation/ Mon, 15 Jul 2019 00:00:00 +0000 https://makvaz.com/2019/07/15/aws-certification-preparation/ Many companies offer learning budgets to grow their Employees. Some people spend them on courses, books. Some go to conferences, others get certificates. I was interested to get the “AWS Certified SysOps Administrator – Associate” certificate. In this post I’m going to tell you what I had to do to prepare for this certification and pass it.