I have an Ansible role that deploys microservices, of whom I have a list of. The microservices are called foo, bar and baz. I also have a list of stages, called DEV, QA and PROD where the microservices get deployed to.

Of course, every microservice needs to connect to a …

Recently, I utilized the yum-config-manager program, which is part of the yum-utils package, to add an additional repository into a CentOS box (of course this works with RedHat, too).

The process involves installing yum-utils and adding a repository using the yum-config-manager command. Subsequently, a file is dynamically generated in the …

Most people are probably already aware of this fact, but you can test your Ansible-roles on multiple Ansible versions (e.g. 1.9 and 2.0) with the help of Travis.

This is done using environment variables. When multiple environment variables are specified, a build will be run for every …

We - at the dev-sec.io-team - create Ansible (and Puppet and Chef) roles that harden the security of our Linux-servers. They are meant to be used in production so we try to provide these roles to several different operating systems, including Debian, Ubuntu, RedHat and its derivates.

Manually testing the …

Some time ago I had to use a new CentOS 7 virtual-machine for some things that aren’t relevant to this post. This machine had to run all the time but also had some problems with a sporadically failing application server. That’s why I decided to monitor the machine …