I'm Terje Kvernes, a systems administrator, software developer, generalized hacker, and writer. I work with Linux (mostly RHEL and Fedora), MacOS, NetApp, Cisco, APC infrastructure and a lot of other hardware. I used to work a lot with audio-visual equipment (mostly Crestron based), but less recently. I also do company-wide Zoom management.
My toolchest at work includes stuff like:
- Rust
- Python
- Ansible
- CFEngine
- Fleet/OSquery
- terraform (and a bit of Packer, targeting AWS, Azure, and OpenStack)
- perl (not as much as I used to, thankfully)
- shell scripting (bash, zsh)
- monitoring through Zabbix/Grafana/Prometheus (and Nagios for some reason)
- and whatever else the job throws at me... I also have done work in Go, C, Fortran...
In my spare time I hike, write fiction, and get fascinated by new and novel ideas.
- mreg, mreg-cli and mreg-api: A DNS management system, its command line interface, and its Python API. Written in Python, specifically for the University of Oslo, but with some promise of being useful to others.
- Treetop: A high performance policy engine for authorization requests, built on Cedar.
- The core engine above is exposed via a REST server with its own CLI.
- A python client library is also available.
- EESSI: European Environment for Scientific Software Installations (sadly, not as active as I'd like to be)
- I mostly dealt with monitoring for the project. The page generator was originally written in Python but migrated to Rust. Apart from the HTML output this generator also produces a Prometheus metrics endpoint and JSON output for use in other contexts. The page is available at status.eessi.io.
- This side project also led to a multithreaded type safe Rust CVMFS scraper
- EasyBuild: A software build and installation framework, mostly used in HPC environments. I've contributed EasyConfigs and some other components. Again something I wish I had more time for.
- hubuum: A non-opinionated CMDB.
- This may become more than slightly work adjacent, but right now it's a personal project.
- Callgrind GitHub Action: A GitHub Action for running Callgrind tests for Rust code on pull requests, showing improvements and regressions per test as a PR comment. Tracks performance against the main branch and between individual commits in the PR itself. It also benchmarks for all features. A few examples: 1, 2 (the latter used an old version of the action and did not track across commits).
- github-authorized-keys: Using teams on github to manage ssh authorized keys.
- ARM HPC Users group 2020: EasyBuild on ARM. Experiences in running EasyBuild on ARM, going through some of the issues with porting software reliant on SSE intrinsics and how to get around such issues.