Juju Team Updates - Week #5 2022

[pedroleaoc (Pedro Leão da Cruz)]

Hi everyone, below you can find the updates from the Canonical Juju Team for the week starting on the 31/01/2022. Have a great weekend!

cc @pedroleaoc @jameinel

[anvial (Vitaly Antonenko)]

• Juju Networking Glossary: add new definitions after Network Core Meetings (they are still in discussion).
• Juju Network Model specification: provide suggestions and comments for the ‘Service Locator’ feature.
• Community workshop: made a report on Cross-Model Relation topic
• Triage some Juju bugs

[achilleasa (Achilleas Anagnostopoulos)]

• Landed PR #13685 which enables Juju to leverage support for asynchronous charm downloads for both charmstore and charmhub charms/bundles (if the appropriate controller feature flag is enabled).
• Landed PR #13694 which introduces a simple CLI tool which uses code analysis techniques to infer the entities and attributes used by Juju’s (mongo) data model.

[tmihoc (Teodora Mihoc)]

• restructured things (SDK + juju.is/tutorials resources docs)
• updated things (added examples to newly created SDK docs classifying charms by development and by deployment; updated how to retrieve resource id section in the OLM cross-model relations doc; corrected series reference in SDK charm initialisation doc)
• raised 2 issues (awkward fixed table column width; broken links from IBM to Juju) with the web team and they’re now fixed
• assisted Daniele with this week’s documentation workshop

• participated in the Juju community workshop
• touched base with the Ops team to discuss more how-to guides for the SDK docs

[simonrichardson]

• Investigation of model-data API for facade calls
• Investigating prodstack ping timeouts
• Help with release fixes and broken CI

[arnodel (Arnaud Delobelle)]

I have been working on improvements to Golua, a Lua implementation in Go

• The default branch of Golua now implements Lua 5.4, the lastest version of Lua

• A new experimental REPL for Golua can be tried. Install it with

  go install github.com/arnodel/golua/cmd/golua-repl@repl
  

• Investigating isolating GC between Golua runtimes (e.g. making sure that pending Lua finalizers all run before a runtime is closed)

[wallyworld (Ian Booth)]

• Investigate issues with the Jenkins build nodes
• Clean up build scripts to remove old code
• Continue work to improve release build process to remove reliance on a single pet node
• Fix issues with snap build scripts to improve robustness when resuming
• enable ability to strictly confine juju snap
• Publish 2.9.24 candidate
• Various PR to upgrade 2.9 to Go 1.17 and clean up dependencies
  • juju 2.9 branch, here, here, here
  • utils
  • blobstore
  • charm
  • charmrepo
  • version
  • collections
  • errors
  • testing
  • cmd
  • plus other minor upstream deps

[cderici (Caner Derici)]

pylibjuju updates:

• Big one since the last update: Pylibjuju 2.9.6 is released
• Facade schemas are updated for Juju 2.9.24 [PR #626]

juju updates:

• Spent a bunch of time getting comfortable using Juju with oci and maas providers.
• DisplayName info is saved for the bootstrap machine on OCI [PR #13662] [LP #1958423]
• Confirmed that the [PR #13662] also fixes the same issue on MAAS [LP #1842077]

[tlm (Thomas Miller)]

• Progressed Juju3 dashboard work to review
• Fixed several issues around Juju trying to deploy 22.04 images when not using the client from a linux machine
• Various small changes for building on arm64 darwin locally.

[benhoyt]

• Finished and merged Pebble health checks PR
• Worked on making Pebble a child-subreaper and reaping zombie children

[manadart (Joseph Phillips)]

• More code review and feature design, particularly around networking.
• Landed the dependency engine patches from last week’s update.
• Further investigation of internal cloud issues, particularly around forced destruction of model resources. One or more patches for this will be forthcoming.

[hmlanigan (Heather Lanigan)]

This week is the start of my rotation with the Bootstack team. The goal is to observe and learn about how juju is used within Canonical:

• Get real feedback about issues when utilizing the tool from experiencing it in a fashion that we don’t naturally see as developers. This can be from the view of charms, or a few as operations.
• Be able to move some ‘low priority’ issues that aren’t really roadmap items, but are actual pain points of using the system.

Related work:

• While observing/assisting with a model migration, gather more data to hopefully fix LP 195675, where failed actions cause agent restart loops.
• Fix 1959351 where juju ssh <application>/leader is very slow.
• Added the ap-southeast-3 region for aws clouds.
• Added documentation on using @filename with juju config to set a value.