Articles

Kubernetes provides an abstraction layer for persistent data storage. Volumes can be of various storage classes depending on user requirements. Those requirements can evolve with time, meaning that volumes sometimes need to be migrated from one storage class to another. This article introduces a method to do so.

Neighbridge is an international community in Nagoya. I've been joining their events for quite some time and heard that their organizers wanted to improve their online visibility. As this relates to my line of work, I provided some help to design and deploy https://neighbridge.com

Nagoya Global Friends is an international community in Nagoya whose events gather people from all over the worlds. In order to visualize the various countries represented, I designed a simple Firebase application. The application allows users to register their home country, which gets stored in a Firestore database.

Some applications might require the same codebase to be tested with different sets of environment variables. This article proposes a simple way to do so.

Aruba IAP can use custom certificates when serving the Web UI over HTTPS. Those certificates can be generated, among others, using pfSense. This can be useful when trying to get rid of browser warnings regarding untrusted HTTPS connections

Most web applications that manage data in a database perform at least some form of create, read, update or delete (CRUD) operations on stored records. Moreover, web applications also often expose those operations via a REST API. Most database tables - corresponding to the entities manged by the application - need their own CRUD controller and set of HTTP endpoints. Because of this, large applications can quickly become tedious to develop and maintain. However, the logic for each table is usually quite similar. Auto CRUD has been developed to reduce this workload.

An HDD can be configured to spin down after a certain time via the APM settings which can be managed by smartctl. Unfortunately, those settings do not persist after a reboot. This article presents a solution to the problem

My router needed to be replaced. However, instead of buying an off-the-shelf router, I decided to give pfSense a go and install it on a second-hand desktop computer.

Kong is a popular API gateway that can be used as a reverse proxy for clients to access back-end services. It can be run as a Docker container and, as such, can be deployed to Kubernetes. However, when doing so, requests might be severely impacted by unusually high latency. This can be solved by configuring the order in which Kong resolves DNS records.

With newer versions of Microk8s, its GitLab integration changes slightly. Here are the key differences