I am using Proxmox to run a larger number of virtual machines and LXC containers. Recently, after a apt update && apt upgrade && apt dist-upgrade followed by a do-release-upgrade and a reboot to bring a Ubuntu container up to date, the container failed to start. The Proxmox web frontend […]
Tipps & Tricks
Updating Java Enterprise applications can be a complex task. Typically you’d perform one or more steps from this list: determining what database schema version you are running in the target environment applying one or many SQL scripts for upgrading a schema (adding tables, columns, …) running one or many migration […]
Self-upgrading Java Enterprise applications
In the past I have used Jenkins excessively both professionally as well as for my private / open source projects. For the latter, I run and maintained my own Jenkins instance, running on an HP server in my basement 🙂 I am currently trying to become as „lean“ as possible, […]
Migrating from Jenkins to Travis CI
Just recently I needed to merge multiple Git repositories into one. This might seem trivial, but there are just so many ways to do this, it can be confusing 🙂 My requirements were: merge multiple repositories into a new repository preserve history of all artefacts have every old repository in […]
Merging multiple Git repositories into one
I recently ran into issues getting ZWave to run on openHAB 2 on my new hardware: an Odroid C2. I added the ZWave binding to the openHAB installation, provided the port of the ZWave USB Stick in the configuration settings and… nothing happened. openHAB insisted that the „Port /dev/ttyUSB1 does […]
openHAB + ZWave: solving the „Port … does not exist“ ...
I am a long-time user of openHAB – started setting up a „Smart Home“ back in the times when there was still an openHAB 1.6. The reason I am using openHAB is because it had and has a vital community is vendor agnostic and allows to set up an extremely […]
Setting up openHAB on Odroid-C2
4 I recently released a „j-lawyer.BOX 2“ – a Linux based server with the j-lawyer.org case management software pre-installed – based on Odroid HC1. Until now, there was a j-lawyer.BOX 1 based on Odroid C2 which has proven to be very reliable. Two pilot users / customers mentioned they were facing […]
Java process crashing on Odroid HC1 / XU4
When using Trac with the Account Manager plugin as a public instance and with user registrations enabled, it won’t take long until you see a fair amount of spam registrations. While you can use email verification to avoid actual changes to your data (no edit privileges until mail address is […]