tomica.net
Ivan Tomica
Over the course of many complex projects, I have gained proficiency in designing, implementing, and maintaining robust and scalable infrastructures. My experience covers optimizing performance, ensuring high availability, and enhancing system security while working with web servers, load balancers, databases, CI/CD pipelines, containers, and serverless technologies.
August 2026
September 2026
Top Words
- fedora
- freebsd
- linux
- installing
- firefox
- opensuse
- password
- client
- emacs
- ubuntu
- migrating
All posts (172)
Just like Bash on Linux, PowerShell on Windows has it’s PATH-like variable from which modules are being automatically loaded. To find out array of your paths you can use: PS C:\Users\ivant> $env:PSModulePath D:\Ivan\Documents\PowerShell\Modules;C:\Program Files\PowerShell\Modules;c:\program...
Setting up Wireguard based VPN is quite easy. Depending on your distribution you install kernel headers (as Wireguard is loaded kernel module), install Wireguard and configure it and you’re off to the races. With Linux kernel 5.6 Wireguard will be built in so this process will be even simpler. Installation Currently...
Seems to me that this my little trip to the Windows land might actually trigger me to learn a thing or two about that OS. Naturally, I’m also planning to jot those things down here. So while installing Windows to spare NVMe drive it decided to place its bootloader to existing EFI partition where up until then only...
I've since evolved this script a bit and have published it on GitHub: [https://github.com/ivantomica/AWSVault](https://github.com/ivantomica/AWSVault) To log in into AWS I prefer to use small function which calls aws-vault utility and gets URL to login to specific AWS account and then opens that AWS account in its...
For most of my private email needs I prefer to use Mu4e within Emacs. It is a module of Emacs which basically searches through Mu index file. Naturally, to be able to index something, you first need to fetch it. In this case “it” are email messages from the server, or, my mailbox if you wish. For this particular...
I have been previously installing Ubuntu on ZFS (root-on-zfs) and since then I’ve transitioned to Fedora, on ext4+lvm, to avoid much complication and hassle. It is also not necessary for me to have all those nice ZFS features on root. When I was installing Fedora I have reformatted existing drive. Unfortunately...
Obviously, I've decided to revert this decision on new articles again. There has been this thought in my head about completely disabling comments on this website for some time now. Sure, it is nice to get nice feedback for the articles I’ve written in the past or comments that correct some of outdated or otherwise...
In order to expand ZFS pool first step is to resize underlying disk. Once that’s done, by default on Linux, partition 9 of size 8MB is created at the end of the disk. Reasoning for this partition is not completely clear for me, but according to some random discussions on the internet , it would seem that it comes...
Prompted by the excellent article at RedHat’s blog on the topic of “What my family thinks I do all day? ” I decided to do the same research on my own, just to see where I stand and how much understanding I get from the family about the work that I do. It is quite hard to explain things that sysadmins do in plain...
For the past few weeks I’ve been trying to solve few particular set of problems which I won’t go into detail here, perhaps in another post. One of the challenges I’ve faced is how to export NFS from my ZFS pool on Fedora host machine and mount it within Ubuntu based VM. The whole process is quite simple and straight...
I had this problem with playing Netflix videos in Firefox on Fedora where even at video preview-s I would constantly get yellow bar with the message that Widevine Content Decryption Module, required for playing DRM content Netflix serves, has in fact crashed. Videos worked fine in Chrome, but I’d like to use...
More than 3 years ago I’ve written an article about self-hosting email. Throughout the years that setup was adjusted, migrated and changed in various ways. I’ve used it on the FreeBSD, Debian, Ubuntu since the original article which was based on CentOS. Now, I’m trying to set it up again on the CentOS, this time on...
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