juju

Juju | Cloud | Ubuntu
https://www.ubuntu.com/cloud/juju

Getting started with Juju | Documentation | Juju
https://jujucharms.com/docs/stable/getting-started

Charm hooks | Documentation | Juju
https://jujucharms.com/docs/stable/authors-charm-hooks

Dealing with errors encountered by charm hooks | Documentation | Juju
https://jujucharms.com/docs/devel/authors-hook-errors

Debugging Juju charm hooks | Documentation | Juju
https://jujucharms.com/docs/1.25/authors-hook-debug

Charm Tools | Documentation | Juju
https://jujucharms.com/docs/1.25/tools-charm-tools

juju debug-hooks _unit_ _hooks_
juju resolved _unit_