Doing Scrum is easy! Just follow and implement checklist below and everything will go well, right? Deliver in cycles of two to six weeks Work in a team sized six plus or minus three Every day stand together answering what was done since the last standup and what will be done before the next The […]
Lessons learned how to do Scrum in a fixed price project
As a Scrum Master my opinion on doing Scrum in combination with a fixed price, fixed functionality and fixed deadline is somewhat tricky to grasp. However, it still common that in many projects fixed price is just simply the norm. For instance, this is often the case in public tenders for government or education institutions […]
Ansible – Simple module
In this post, we’ll review Ansible module development. I haven chosen to make a maven module; not very fancy, but it provides a good support for the subject. This module will execute a maven phase for a project (a pom.xml is designated). You can always refer to the Ansible Module Development page. Which language? The […]
Ansible – Example playbook to setup Jenkins slave
As mentioned in my previous post about Ansible, we will now proceed with writing an Ansible playbook. Playbooks are files containing instructions that can be processed by Ansible, they are written in yaml. For this blog post I will show you how to create a playbook that will setup a remote computer as a Jenkins […]
Bash – A few commands to use again and again
Introduction These days I spend a lot of time in the bash shell. I use it for ad-hoc scripting or driving several Linux boxes. In my current project we set up a continuous delivery environment and migrate code onto it. I lift code from CVS to SVN, mavenize Ant builds and funnel artifacts into Nexus. […]
Ansible – next generation configuration management
The popularity of the cloud has taken configuration management to the next level. Tools that help system administrators and developers configure and manage large amounts of servers, like Chef and Puppet, have popped up everywhere. Ansible is the next generation configuration management. Ansible can be used to excute tasks on remote computers via SSH so […]
QCon London 2013 – Agile in Actuality, Open Data, Latin as a Programming Language
After an exciting few days at the QCon conference in London last week, I am slowly recovering from all the new input I got, and decided to do this by writing a little summary of “all things agile” from the Thursday as well as the highlights the other two days too. Cherry Picking Wednesday On […]
Authenticating Dutch organizations via eHerkenning
Introduction In The Netherlands, citizens can interact with digital government services using a central username and password through an authentication scheme called DigiD. This helps these services to hook into a central registry of users, thus providing them with a single identity corresponding to a single username and password. DigiD is a widely spread and […]
Beyond classical contracting
There is an interesting approach from the German IT service provider Adesso AG and the Ruhr Institute for Software Technology on how to balance project risks between service providers and their customers within a new contracting model, which is a combination of fixed price and Time & Material approaches. I want to give a brief […]
Building a Captive Portal – controlling access to the internet from your network
What is a captive portal? Wikipedia says: “The captive portal technique forces an HTTP client on a network to see a special web page (usually for authentication purposes) before using the Internet normally. A captive portal turns a Web browser into an authentication device. This is done by intercepting all packets, regardless of address or […]