Upgrade a kubeadm powered Kubernetes cluster on AWS EC2

Like any other software, Kubernetes reveals some security breaches from time to time. On November 26th, 2018 CVE-2018-1002105 was published with a critical score of 9,8 (10 is maximum). With a specially crafted request, users that are authorized to establish a connection through the Kubernetes API server to a backend server can then send arbitrary requests […]

Access Azure’s BLOB storage with cURL on an VM/VMSS instance

After 1,5 years working intensively with Amazon Web Services (AWS), my current project builds its infrastructure in Microsoft Azure. This forces me to learn some new things, concepts and notations. A common task I like to use is to access a single file (for example a Kubernetes configuration) on object storage. Azure’s object storage is called Azure Blob […]