Wtf is CIDR notation?

6 minute read

CIDR notation. A brief explanation in how IP-addresses and ranges work.

Firewall with ansible

6 minute read

Install and set up UFW with a set of basic rules using ansible.

Etcd cluster for Kubernetes

17 minute read

Set up of a a trusted etcd cluster on UpCloud which will be used as an external etcd service for kubernetes.

Ansible and UpCloud

11 minute read

Installing server software on UpCloud servers with Ansible.

Git gud

10 minute read

A simple git-flow inspired methodology for teams that are not only seniors.

The Dockerfile

7 minute read

Writing, building and publishing a Dockerfile.

Go to jail

6 minute read

Creating a jail and run the services in docker.