paas-charm 1.11 release notes

16 March 2026

These release notes cover new features and changes in paas-charm version 1.11 and its extended support into Charmcraft and Rockcraft.

See our Release policy and schedule.

Requirements and compatibility

Using paas-charm requires the following software:

  • cosl

  • Jinja2 3.1.6

  • jsonschema >=4.26,<4.27

  • ops 2.6 or greater

  • pydantic 2.12.5

The paas-charm library is used with Juju charms and runs on a Kubernetes cloud. For development and testing purposes, a machine or VM with a minimum of 4 CPUs, 4GB RAM, and a 20GB disk is required. In production, at least 16GB RAM and 3 high-availability nodes are recommended.

Updates

paas-charm

Support for custom COS directories

Users can now provide their own Grafana dashboards, Loki alert rules, and Prometheus alert rules through custom COS directories.

RabbitMQ HA support

A new RABBITMQ_CONNECT_STRINGS environment variable is now available for applications that use RabbitMQ, enabling high-availability configurations.

Use ops.charm_dir instead of os.getcwd

Applications using paas-charm can now run scenario tests correctly. The framework now uses ops.charm_dir to locate charm configuration files instead of relying on os.getcwd().

Structured logging and trace correlation for FastAPI (Uvicorn)

FastAPI applications now support structured logging in JSON format via Uvicorn. When the application is instrumented with OpenTelemetry, trace context is automatically correlated in both access and error logs. The logging format can be configured using the paas-config.yaml file.

Structured logging and trace correlation for Django and Flask (Gunicorn)

Django and Flask applications now support structured logging in JSON format via Gunicorn. When the application is instrumented with OpenTelemetry, trace context is automatically correlated in both access and error logs. The logging format can be configured using the paas-config.yaml file.

Rockcraft

No feature updates in this release.

Charmcraft

No feature updates in this release.

Bug fixes

No bug fixes in this release.

Known issues in paas-charm

Thanks to our contributors

@f-atwi, @alithethird, @javierdelapuente