2025.1 Series Release Notes¶
14.0.0¶
Prelude¶
The Openstack 2025.1 (Watcher 14.0.0) includes several new features,
deprecations, and removals. After a period of inactivity, the Watcher
project moved to the Distributed leadership model in 2025.1 with
several new contributors working to modernize the code base.
Activity this cycle was mainly focused on paying down technical debt
related to supporting newer testing runtimes. With this release,
ubuntu 24.04 is now officially tested and supported.
Ubuntu 24.04 brings a new default Python runtime 3.12 and with it
improvements to eventlet and SQLAlchemy 2.0 compatibility where required.
2025.1 is the last release to officially support and test with Ubuntu 22.04.
2025.1 is the second official skip-level upgrade release supporting
upgrades from either 2024.1 or 2024.2
Another area of focus in this cycle was the data sources supported by Watcher. The long obsolete Ceilometer API data source has been removed, and the untested Monasca data source has been deprecated and a new Prometheus data source has been added. https://specs.openstack.org/openstack/watcher-specs/specs/2025.1/approved/prometheus-datasource.html
Nouvelles fonctionnalités¶
Support for instance metrics has been added to the prometheus data source. The included metrics are instance_cpu_usage, instance_ram_usage, instance_ram_allocated and instance_root_disk_size.
A new Prometheus data source is added. This allows the watcher decision engine to collect metrics from Prometheus server. For more information about the Prometheus data source, including limitations and configuration options see https://docs.openstack.org/watcher/latest/datasources/prometheus.html
Upgrade Notes¶
Python 3.8 support has been dropped. Last release of watcher supporting python 3.8 is 13.0.0. The minimum version of Python now supported is Python 3.9.
Ceilometer datasource has been completely removed. The datasource requires ceilometer API which was already removed from Ceilometer. Use the other datasources such as Gnocchi.
Deprecation Notes¶
Monasca Data Source is deprecated and will be removed in the future, due to inactivity of Monasca project.
Bug Fixes¶
https://bugs.launchpad.net/watcher/+bug/2086710 watcher compatibility between eventlet, apscheduler, and python 3.12
https://bugs.launchpad.net/watcher/+bug/2067815 refactoring of the SQLAlchemy database layer to improve compatibility with eventlet on newer Pythons
A number of linting issues were addressed with the introduction of pre-commit. The issues include but are not limited to, spelling and grammar fixes across all documentation and code, numerous sphinx documentation build warnings , and incorrect file permission such as files having the execute bit set when not required. While none of these changes should affect the runtime behavior of Watcher, they generally improve the maintainability and quality of the codebase.
