Michael “Svedrin” Ziegler

Welcome to my portfolio site. Any questions? Mail me at i.am@svedr.in. Also, here's my GitHub.

Software ¶

netio: network throughput benchmark
distmark: disk IO benchmark
meshping: ping daemon to monitor networks and analyze latencies
FailPlay: minimalistic music player
RSS2IMAP: uploads RSS Feeds to an IMAP directory
Lockpick minigame from DreamFall: The longest Journey
MicroFW: iptables firewall inspired by shorewall, with nice IPv6 support
iptasi: iptables simulator

Electronics ¶

Arduino power supply: Bench power supply controlled by an Arduino
Garage gate controller: Controls a garage gate from NodeRED via MQTT, including safety lights, physical buttons and an ESP firmware

Creative work ¶

Photography
Blog (check out the series about Storage performance)

Biography ¶

1986	spawned
2000	began programming using Visual Basic 5
2002	began playing with Linux on the desktop
2004	began programming with AMX Mod X first AMXX plugin published as Open Source
2005	graduated from school (majored in physics and english) began studying computer science in Heidelberg, coding all kinds of stuff began coding the first WarriorMod clan war manager as a C++ Source Engine plugin rented a Linux server to learn some admin stuff
2006	nominated for the PHPClasses.org Innovation Award first job developing a database system for MEP OLBO using PHP/MySQL moved to Freiburg
2007	joined Freiburg Center for Data Analysis and Modeling as a sysadmin joined the Mumble community
2008	moved back to Fulda
2009	began development of Mumble-Django aced the CCNA Exploration courses
2010	graduated in 2010 (majored in computer science with an emphasis on telecommunications) became Debian Maintainer in August joined it-novum as a Consultant working on Open Source Storage and Virtualization clusters
2011	began developing openATTIC, a storage management system
2013	started working on Fluxmon, a distributed performance monitoring system got into riding
2014	held a talk about storage performance at Chemnitzer Linuxtage got a horse started volunteering at Lamahausen took part in founding mag.lab E.V. Fulda
2015	joined PROEMION as a Linux administrator and systems architect, building telematics infrastructure
2016	leading the datacenter team at PROEMION started working on Alexi and vmaker
2017	learned me some Rust by coding netio
2018	started working on IoTCP
2019	wrote MicroFW
2022	joined RhönCloud as lead datacenter engineer
	to be continued

Technical interests ¶

building reliable infrastructure
pushing performance and scalability to the limits
writing understandable and maintainable software
keeping complex systems secure

Programming/scripting languages ¶

Preferred:
- Python is great for expressing great concepts in little code.
- JavaScript, best served with VueJS.
- C for the fidgety things. (I'm rapidly replacing C with Rust though.)
- Bash to glue it all together.
Others used:
- C++
- Pawn
- PHP
- C#

Other software encountered along the way ¶

Linux	Desktop since 2002, Server since 2005 (Debian, Ubuntu)
Storage	RAID, LVM, NFS, Samba 4, DRBD, ZFS, Ceph, Performance Tuning
Networking	Cisco IOS, HP Aruba, HP FlexFabric, OpenVPN, iptables, FortiGate, STP, OSPF, BGP, VRRP, LLDP, FRR, UniFi, nginx, Asterisk, Postfix
Databases	MySQL, PostgreSQL, ElasticSearch, Redis, Cassandra, InfluxDB, SQL, Index-Tuning
Queues	ZeroMQ, RabbitMQ
Monitoring	Prometheus, Grafana, Loki, LogStash, Kibana, Zabbix, Nagios
Security	TLS, RADIUS, libsodium
Virtualization	VMware, libvirt, KVM, oVirt, Proxmox
Containers	LXC, Docker, Portainer
CI/CD	Git, GitHub, Puppet, Foreman, Ansible, Jenkins, DroneCI
dev Frontend	HTML, CSS, jQuery, VueJS
dev Backend	Python, Django, C, JavaScript, Go, Rust
dev Embedded	Arduino, Platform.io, NodeRED, MQTT
Windows	Active Directory, Network Policy Services, RADIUS

Languages ¶

German (native)
English (fluent)

Sources of inspiration ¶

Nico “mephisto” Wollenzin †
Philipp “nethead” Wollermann
Thorvald “Slicer” Natvig
Leonard “paniq” Ritter
Douglas Crockford

Other interests ¶

Writing
Riding
South Park
Biking
Water skiing / Swimming
Climbing
Audio stuff
Electronics

Memberships ¶

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