Randomly some Docker-containers on a clients Linux machine wouldn’t start - they’d fail with the error:

docker: Error response from daemon: OCI runtime create failed: container_linux.go:349: starting container process caused "process_linux.go:319: getting the final child's pid from pipe caused \"EOF\"": unknown.

It didn’t matter …

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 …

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 …

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 …