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
12 March 2026

AppArmor security vulnerabilities fixes available

Ubuntu Article

Qualys discovered several vulnerabilities in the AppArmor code of the Linux kernel. These are being referred to as CrackArmor, while CVE IDs have not been assigned yet. All of the vulnerabilities require unprivileged local user access. The impact of these vulnerabilities ranges from denial of service to kernel memory information leak, rem ...


David Beamonte
11 March 2026

The bare metal problem in AI Factories

MAAS MAAS

As AI platforms grow into large-scale “AI Factories,” the real bottleneck shifts from model design to operational complexity. With expensive GPU accelerators, hardware failures and inconsistent configurations lead directly to lost throughput and reduced return on investment. While Kubernetes orchestrates workloads, it cannot fix broken ph ...


Canonical
10 March 2026

Fast-tracking industrial and AI deployment on Renesas RZ platforms 

Canonical announcements Article

Certified Ubuntu 24.04 LTS images now available Canonical is pleased to announce the general availability (GA) of certified Ubuntu 24.04 LTS and Ubuntu Core 24 images for the Renesas RZ/G2L and RZ/G2LC 64-bit microprocessors (MPUs) platforms. With a production-ready Ubuntu version, users can benefit from enterprise-grade security, long-te ...