~/linux
Linux systems
Solution design, administration, monitoring and support, primarily for Debian and RHEL, but also other distributions, not only on servers.
Jirka Simon · Linux & IT administrator
Linux and open source infrastructure administration
Servers, virtualization, automation and tailor-made hosting. I design, deploy and manage environments for small businesses, start-ups and multinational companies.
$ ls ~/services
linux/ virtualization/ automation/
hosting/ infrastructure/ 3d-printing/
$
~/about
Who is behind vesim.cz
I have been working in IT for more than 30 years, starting with DOS and Windows. Since 2003 I have focused on Unix and Linux, and for over 15 years I have managed Linux platforms exclusively. Before that I spent more than 12 years developing software.
I gained my experience at Czech and multinational companies and start-ups. I work on server administration, virtualization, automation and containers.
30+
years in IT
2003
started with Unix and Linux
15+
years on Linux platforms only
12+
years of software development
~/services
What I do
~/virtualization
Virtualization
Environment design and administration, resource optimization.
~/automation
Automation
Environment analysis, software-defined infrastructure design, adjustments and optimization.
~/hosting
Web and mail hosting
Custom server hosting, domains and DNS, mailboxes, web hosting and cloud storage.
~/infrastructure
IT infrastructure for SMEs
Office network design, internet connectivity and security, IT administration.
~/3d-printing
3D printing
Printing from existing designs, 3D model design and preparation, custom production. My hobby.
~/technologies
- Debian
- RHEL
- CentOS Stream
- Apache
- Nginx
- HAProxy
- PHP
- MySQL / MariaDB
- Postfix
- Dovecot
- iSCSI
- NFS
- Samba
- oVirt
- RHV
- Proxmox
- Ansible
- Prometheus
- Alertmanager
- Grafana
- Zabbix
- Icinga
- Unifi
- Google Workspace
- Nextcloud
~/clients
Key clients
~/projects
Projects
~/shooterdiary
A web app for casual and professional shooters – firearms, ammunition, training and costs clearly in one place. Complete design, Django development, ongoing feature development and administration of the whole environment.
- Firearm records with service and cleaning history
- Ammo inventory with automatic deduction and low-stock alerts
- Training log and personal goals
- Cost statistics by caliber, firearm and period
~/contact
Get in touch
Tell me what you need to solve. I will get back to you shortly.