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Build OpenNMS with Docker

2018-07-14 Ronny Trommer
Being able to compiling an Open Source project is important. You can change the code, so you should also able to build it. Why is there a dedicated Docker image for the build environment? The dependencies running a pre-build OpenNMS Horizon distribution and compiling from source are different. To build OpenNMS Horizon you need Apache Maven and to compile JICMP, JRRD you need a C compiler environment. This is nothing you want to carry when you just want to run OpenNMS Horizon. Continue reading

Docker and parallel builds

2016-07-09 Ronny Trommer

I was listening to an interesting talk from Laura Frank from Codeship. In case you build or maintain a Continuous {Integration, Delivery} environment this definitely worth watching and they describe how they used LXC and now Docker to build their CI/CD infrastructure.

TL;DR

Interesting to me, the description in the YAML file reminded me quickly on a course I needed to pass during my study in parallel computing. The exam had one section where you had to describe parallel and sequential processes with some high level constructs. You had to describe a given time sequence graph for processes on n processors with the primitives BEGIN/END for sequential parts and COBEGIN/COEND for parallel processes.