Upgrade a Jenkins farm

We have been using successfully Jenkins for a long time, but our Jenkins environment was very outdated. The master and its slaves were still running on JDK1.6 with Jenkins version 1.456. So it was “very” old. Even the installation of new plugins was impossible  because these were usually based on Java7. Overall we have 20 Jenkins slaves for 27 projects and 200 jobs. The projects are in several states: just started, ongoing, release or maintanence. The normal project work should not be disturbed by this upgrade.

Therefore we decided not to update the existing installation but to use a completely new Jenkins and update the JDK too.

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Getting started with ELK and JBoss EAP6

In this post we will describe what is needed to get started with managing your EAP 6 logs with ElasticSearch, Logstash and Kibana. There are several reasons why you would want to collect your logging output in a central place.

  • Aggregate (output from multiple applications / hosts)
  • Correlate events in different systems
  • Analyze (more than grep)
  • Backup
  • Integrate into monitoring
  • Gather statistics

A common solution that supports all this use cases is provided by the ELK stack. It consists of ElasticSearch (ES), Logstash and Kibana. ElasticSearch provides persistence and analytics, Logstash provides the pipeline that brings your Logs into ES and Kibana provides a GUI for querying and dashboards.

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Split git repositories by subfolders with history

This article describes how to turn the subfolders in a git repository into new git repositories, keeping the history.

In our case we have a big git repository (2GB) with slides for a lot of courses. Every course was a subdirectory in the repository. So even if you hold just one course, you have to clone everything. That’s why we decided to put every course into a separate repository. We use SCM-Manager for our repository and could therefore use its REST api in the script.

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akquinet Technology Radar 2013 available

Just in time for the holidays here is the new Technology Radar 2013 🙂

Have a look: http://radar.spree.de/results

This year  the radar provides an overview of the trends for technologies, methods and tools in software development for 2013/2014. It is separated into 6 categories:

  • Methods
  • Platforms & Middleware
  • Databases
  • Frameworks & Libraries
  • Languages
  • Tools

Have a look for trends in 2014 and technologies to build on. You can download the radar: Technology Radar 2013 Print Version

Happy Holidays and a Happy New Year

akquinet AG

How to clean your Nexus Release Repositories

The number of release process executions is steadily increasing. Concepts like Continuous Delivery and Deployment emphasize releasing as often and as automated as possible. While developers and customers enjoy the bright side of the improving software development processes, operations has to deal with the flip side. More releases mean more storage usage. Increasing process quality requirements like archiving every delivered release (or at least, every release which is deployed on a production system) in a structured, easily accessible manner somewhere means more storage. But resources like storage are limited. So you have to collect the garbage sooner or later – and if you have a lot of releases, you desperately want to automate this cleanup process.

So, if you use Sonatype Nexus as intensively as we do and you sooner or later face storage limitations: this blog post might be a solution for you. Continue reading

Threshold Voting Workshops in Action

Intro

While maintaining our development infrastructure, we regularly have to deal with a plethora of feature and plugin wishes. Because balancing all these different wishes, requirements and purposes is so time-consuming, we considered how we might increase our performance in this area. We designed and tested a method for this in the context of a Jenkins upgrade. We then invested some more time to create a sample HTML5 presentation that you may like to use yourself to try out threshold voting workshops in action.

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