Show posts tagged:

Managing local groups

Manually managing groups on a large infrastructure can be a tedious task, and is therefore best suited through automation software like CFEngine. Unfortunately - at time of writing - CFEngine does not have any built-in promise types for managing groups. But fear not; in CFEngine 3.17, custom promise types were introduced. This new exhilarating feature does not only allow for members of our community to make their own custom promise types, but also lets the CFEngine Core developers prototype new future promise types.

Posted by Lars Erik Wik
October 1, 2021

cf-remote is now available via pip

cf-remote is a tool for downloading and installing/deploying CFEngine. It automates a lot of the things you have to do before CFEngine is actually installed on your infrastructure, such as provisioning cloud instances, downloading CFEngine installers, copying them to remote hosts and installing / bootstrapping. To make it as easy as possible to get started with cf-remote and CFEngine, it is now available on pypi. Getting started Installing cf-remote is as easy as:

February 11, 2021

Custom Promise outcomes in Mission Portal

CFEngine 3.17.0 introduced custom promise types, which enable CFEngine users to extend core functionality and policy language in a simple way. As an example of the power and simplicity of this new feature, I will show a promise type that helps to observe a website’s status. The module which implements this promise type was written in a couple of hours. Creating a promise type for whether a site is up We will use Python and the CFEngine library to implement a promise module.

January 21, 2021

How to implement CFEngine Custom Promise Types in Python

This tutorial focuses on how to write a promise module, implementing a new CFEngine promise type. It assumes you already know how to install promise modules and use custom promise types, as shown in the previous blog post. Why Python? Promise modules can be written in any programming language, but there are some advantages of using python: Readable and beginner friendly language / syntax Popular and familiar to a lot of people, also used in some CFEngine package modules Big standard library, allowing you to reuse data structures, parsers, etc.

December 8, 2020

Installing CFEngine Nightlies using cf-remote

Nightly packages are very useful for testing new features of CFEngine. Right now (as of August 2020), nightly packages can be used to test out these new features: Compliance Reports. Mission Portal Dark Mode. New host info page with variable pinning and copy buttons. Note that these features are in development, some parts may be unfinished or buggy. Nightly packages are not supported and should not be used in production environments.

August 28, 2020

Introducing cf-remote: Tooling to deploy CFEngine

About a year ago, I wrote a small python script to automate installing and bootstrapping CFEngine on virtual machines in AWS. It had some hard coded IP addresses that I needed to update when I spawned new hosts, but other than that, it worked well. During manual testing, it saved me a lot of time instead of having to do things manually. Deploying CFEngine normally consists of these steps: Determine what CFEngine package to use.

April 30, 2019
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