Tag: english

Counting the milliseconds

I’ve been building a Netty-based web server in Clojure. While I haven’t had the strength to do much with it these past few months because I prioritized the climbing season, now that Hacktoberfest is incoming I’m planning to go pedal to the metal with it (and with my git GUI work-in-progress).

I’m building iny (named after a fox from Fekete Istvan’s Vuk) with the clear goal to replace Aleph. While I’m a huge fan of Aleph and the libraries around it (like Manifold) it’s no longer maintained, which is simply not acceptable when we’re now looking at http/3 coming out sooner than later (support is already in browsers after all).


Going green

There is kind of a status to having your GitHub contributions chart covered in green. For those unfamiliar, it’s a calendar-like chart that shows how active you are on GitHub any given day. It’s assumed that the greener the better. I’m not so sure anymore.

From the start of May to the end of July, I tried filling it up. Do something every day. My conclusion is that this is a typical case of Goodhart’s law. Basically as soon as a certain metric (in this case turning that chart green) becomes a goal in itself, it ceases to be a meaningful metric anymore.


GitOps and Kubernetes persistence

A while back I wrote about bootstrapping a Kubernetes cluster. I’ve been refining the setup so that it requires as little manual kubectl‘ing as possible. I still use ArgoCD to get everything rolling, and there is one bit that kept going red: persistent volumes.


Asama!

I got really fed up with sitting at home because of covid. So instead I rented a car and went for a snowy hike where I wouldn’t be likely to run into people: Mt Asama, an active volcano. In fact I only ran into 1-2 people on the way.


Return to Kumotori

While other countries have pretty harsh lockdown rules (from what I hear on the news), Japan is pretty lax about that. While commuting to work by train is discouraged, I figured going up in the mountains (where there are hardly any people) it can’t hurt, right?


Training for Aconcagua

After Elbrus and Kilimanjaro, I knew I can’t take Aconcagua lightly. At almost 7000m it’s the highest mountain outside of Asia and thus the second highest of the Seven Summits. Working full time, the time I had available for training was very limited. This was before covid hit either, so I actually had to commute to the office too, which is about an hour one way. So what can the man do if he only has so many hours in the day and he needs some sleep too, but training has to be done for Aconcagua?


Tanigawa-dake

If you’ve watched Yama no Susume, then you’ve heard of Mt Tanigawa. It’s the goal of a major arc of the story and an important memory to the characters. I went there in a different season though (in the snow), but didn’t climb the main summit. For no particular reason other than I didn’t realize the summit I was at wasn’t the highest point. Whoops.


2019 in review

This year was quite thick in events so I decided to write a year retrospect for a change. I read somewhere that people tend to do wild things when they’re nearing a “round” age like 30, except I read about this after I planned most of the stuff listed below… It definitely did turn into a very eventful 30th.


ArgoCD bootstrap cluster

I wish it could be completely automated… But for now I’ve just automated as much as possible (and convenient). The ingredients:

  • Helm
  • Sealed Secrets
  • Argo CD and Argo Rollouts
  • traefik
  • Prometheus and Grafana

I have a repository for the purposes of playing around with Kubernetes tooling like this – and hopefully turn it into an actual application eventually. I have big plans and lots of stuff I want to try out, but time is limited. All the code examples in this post use the namespaces and naming choices in the repository. The folder structure (relevant to this bit) is like…

system
 ├┬ apps
 │└─ (bootstrapped Argo CD app manifests)
 ├┬ argo
 │└─ the local "umbrella chart" for Argo CD and Argo Rollouts
 ├┬ bootstrap
 │└─ boilerplate project and application manifests
 └┬ manifests
  └─ manifests I didn't bother turning into a Helm chart
     referenced by the raw-manifests.yaml application

Collapse of the docker0 bridge

We’ve got a printer in the office. I’m not sure how the network is organized, but it’s on a different IP range than the rest of the dev network. And for some reason I couldn’t get it to work.