For episode 64 Lars demoed leech2 live: the library used to ship container data from CFEngine agents to Mission Portal. The slides he presented from are available as a PDF. Lars showed how you can interact with leech2 through the CLI tool lch(1). The CLI tool is bundled in CFEngine >= 3.28 …
We thought we would mix things up a bit here and highlight our open source C library: libntech. I wanted to use libntech’s JSON code to write a minimal tool to parse, check and query JSON data. Using the various library functions related to files, json, strings, sequences and regexes helps …
Disclaimer: This post focuses on Debian-based and Fedora/RHEL-based distributions and packaging. Everybody using a GNU/Linux distribution most likely knows that packages used by the given distribution are somehow signed and such signatures are somehow verified. Usually, this knowledge comes with the …
In the latest version of the CFEngine network protocol (filestream - v4), we leveraged librsync for efficient file copying using their Streaming API. While implementing the file streaming in CFEngine, I found that the documentation on the Streaming API was a bit unclear. Thus, I created two example …
Over three years ago we introduced git and systemd custom promise types. While these are quite functional I recently needed to manage a git repository that was private and so needed a way to authenticate to a git server, in this case gitlab. Gitlab has project access tokens but we didn’t …
I promised more Build modules in my previous monthly Monday module blog post: package-method-winget. And here they are: windows-capability and windows-optional-feature. Inventory Both of these modules use similar usage details to control whether to inventory and to promise the state for specific …
As a developer and user of CFEngine I want to use policy to manage the software on my systems so that I can switch operating systems, distributions, computers and have all my normal tools available wherever I go. Towards this end I searched for a Windows package manager and found one in winget. I …
Editing and copying large files or large numbers of files is slow. For a configuration management tool, it is probably one of the slowest things we do, apart from waiting for other programs to finish or waiting for network communication. In this blog post, we look at how to copy files. More …
To manage large infrastructures, efficient solutions for both making changes and observing the current state are necessary. As most information (inventory) about hosts is quite predictable and static, there are many opportunities for optimizations in terms of compression and avoiding re-transmission …
For CFEngine we manage several public and private repositories of code in GitHub for our Open Source and Enterprise products. In order to ensure quality we run many checks on the code both with nightly builds as well as on each pull request. We use a Jenkins server for nightlies which also includes …
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