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

Hugo Huang
28 May 2026

Canonical announces optimized Ubuntu images for TPU virtual machines by Google Cloud

AI Article

Canonical and Google Cloud announced the availability of certified Ubuntu images for Google’s Cloud TPU Virtual Machines. ...

David Beamonte
28 May 2026

VMware hypervisor deployment using MAAS

MAAS Article

Most modern datacenters are inherently heterogeneous. VMware environments coexist with container platforms, databases, and other bare-metal workloads, often on the same hardware over several years. Servers are bought once, but their role changes as requirements evolve. However, ESXi (the VMware hypervisor) provisioning is often handled se ...

Rob Gibbon
28 May 2026

Migrating from Apache Spark 3 to Spark 4

Data Platform Article

The purpose of this guide is to highlight the key differences between Apache Spark 3 and Spark 4, and provide advice on how to plan a migration. Let’s get started. The biggest changes Let’s talk about the biggest changes between Apache Spark 3.x and Spark 4. Scala 2.12 no more First up, there’s no support ...