These notes have been tested with Proxmox Virtual Environment (PVE) 8.2.4, Debian 12 and cloud-init 22.4.2 (from Debian 12 packaging). First create a virtual machine and install Debian Linux on it normally, with all the additional tools and updates as required. I usually use the netinstall CD image from Debian. After completing the installation, for […]
I often need a Linux virtual machine for testing specific things. Debian Linux is my choice of Linux distribution, and I have wondered how much space does each installed package take in it, to possibly optimize the size of the VM if needed. I installed two VMs: The results after “sudo apt clean“: Installation Disk […]
I have been using VDR – the Video Disk Recorder – on my own Linux host for over 20 years. It has been the primary way of consuming broadcast TV content in our household since 2004. Until now my VDR setup has only been capable of using DVB-C channels in SD, due to the non-HD-capable […]
The default language in the Zabbix user interface (UI) installation is “en_US”, meaning English (US). Probably because of the European roots of Zabbix, the timestamps have still been shown in 24-hour (world-standard) format, up until Zabbix version 6.4. Now in Zabbix 7.0 the default time display format has been changed to correspond to the selected […]
When doing a major version upgrade on Debian Linux with PostgreSQL server installed (using Debian-provided packages), this always catches me: After the upgrade there will be two different PostgreSQL instances running, it won’t do an in-place upgrade for the database automatically. In order to get the existing database running on the newer PostgreSQL version, this […]
Because I seem to frequently search for these manpages: systemd versions in Debian Linux:
Debian has been my primary Linux distribution of choice since 2003. That’s twenty years! How time flies! I haven’t ever worked as full-time server administrator but running and operating various kinds of systems have always been part of my skills, and it has made it possible for me to leverage wide range of tooling required […]
(Note: This page is updated every now and then, according to new Python releases and other interesting details. Last updated: 2025-06-26) Even though I’ve used Python programming language on-and-off since about year 2000, I only started paying more attention to specific Python versions around 2016 when I gradually started using Python more seriously in devops. […]
In the series “why wouldn’t I put this out public instead of just saving it to my own notes”: Moving the Zabbix database to a new database server. Step 1: Dumping the current database # mysqldump –single-transaction zabbix | gzip > /mnt/zbx-dump.sql.gz No need to stop Zabbix for this. Add –user and –host and similar […]
Later in this document: Setting up the database servers Setting up the Zabbix servers Setting up the frontend (web) servers Edmunds Vesmanis had a presentation in Zabbix Summit 2019 about Zabbix HA setups (video in Youtube), and he also wrote a post in Zabbix blog titled High Availability cluster building with Zabbix for continued service: […]