The author introduces an Ansible playbook for applying best practices for securing Linux servers.

While Ansible 3.0 was based on Ansible Base 2.10.x, Ansible 4.0 is based on the ansible-core-2.11.x package. Due to the major update of the ansible-core package, there might be backward-incompatible changes to the playbook language and command-line tools.

»The DebOps project is a set of Free and Open Source tools that let users bootstrap and manage an IT infrastructure based on Debian or Ubuntu operating systems.«

Because Ansible is switching to semantic versioning, the version number of this release is 3.0.0 instead of 2.11.0.