Recently I tried to resize a LVM logical volume with its volume group and the physical disk belonging to the vg. Because the logical volume contained all partitions except for /boot I knew it would be hard.

I also knew that I had no backup and no snapshot of the …

Curl has support for sftp and scp, among many other protocols. In one of our php-applications we use libcurl to transfer files via sftp to a remote datacenter.

We recently migrated this application into a docker-container. With it we transferred the private key into the container, so the application can …

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 …

Some time ago I talked with a co-worker about his internal project. He was the owner of a product that tried to provide a generalized, hardened and fully codified Jenkins instance.

This was done with the help of mostly Puppet and Groovy code. I was in this project for six …

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 …