Skip to main content
  1. Blog
  2. Article

Jorge O. Castro
on 21 November 2014

Charm Workshop: Debugging Juju Hooks


In this charm school Charles Butler and Corey Johns go over the traditional way to debug Juju charm hooks, and Corey introduces his new Juju plugin, DHX, designed to make debugging hooks much easier.

Corey’s debug hook script, DHX, is available here: https://github.com/juju/plugins

Related posts


Luci Stanescu
30 April 2026

Fixes available for CVE-2026-31431 (Copy Fail) Linux Kernel Local Privilege Escalation Vulnerability

Ubuntu Article

A local privilege escalation (LPE) vulnerability affecting the Linux kernel has been publicly disclosed on April 29, 2026. The vulnerability has been assigned CVE ID CVE-2026-31431 and is referred to as Copy Fail. The affected component is a kernel module that provides hardware-accelerated cryptographic functions: algif_aead. The vulnerab ...


Canonical
28 April 2026

Run NVIDIA Nemotron 3 Nano Omni locally in a single command

AI AI

Today, NVIDIA introduced the NVIDIA Nemotron™ 3 Nano Omni, a highly-efficient multimodal model designed to understand and reason across video, audio, images, and language.  Canonical is enabling immediate access to Nemotrom 3 Nano Omni through inference snaps: pre-packaged AI inference runtimes distributed as snap packages for consistent ...


Johann Wolf
27 April 2026

Why Web Engineering is great

Ubuntu Article

Like many software engineers, one of my first software development experiences started with creating my own web page. Since that time 20+ years ago, a lot has changed in the web landscape. Having worked a lot in web since then, I’d like to take a moment to reflect on what I think makes web great! ...