Charmed MySQL Router K8s Reference | Revision 154/155

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Reference > Release Notes > All releases > Revision 154/155

Revision 154/155

September 2, 2024

Dear community,

Canonical’s newest Charmed MySQL Router K8s operator has been published in the 8.0/stable channel.

Due to the newly added support for arm64 architecture, the MySQL Router K8s charm now releases two revisions simultaneously:

  • Revision 155 is built for amd64 ( mysql-router-image r57 )
  • Revision 154 is built for arm64 ( mysql-router-image r57 )

To make sure you deploy for the right architecture, we recommend setting an architecture constraint for your entire Juju model.

Otherwise, you can specify the architecture at deploy time with the --constraints flag as follows:

juju deploy mysql-router-k8s --constraints arch=<arch> --trust

where <arch> can be amd64 or arm64.

Highlights

Below is an overview of the major highlights, enhancements, and bugfixes in this revision. For a detailed list of all commits since the last stable release, see the GitHub release notes.

  • Upgraded MySQL Router from v8.0.36 → v8.0.37 (see Packaging)
  • Added support for ARM architecture

Bugfixes

  • [DPE-4173] Stabilize exporter tests by using listen-port to avoid ephemeral ports in #277
  • [DPE-3881] Use ruff as a linter and formatter in #292
  • Use poetry package-mode=false in #296
  • [DPE-4739] Avoid using time.sleep in rollback integration tests in #298
  • [DPE-4817] Upgrade to use lok_push_api v1 and capture rotated log files in #283
  • Update Python dependencies

Technical details

This section contains some technical details about the charm’s contents and dependencies.

  • The K8s NodePort used to expose the DB service will change after every refresh which might lead to disconnections of clients sitting outside Juju. Check more details in DPE-5276.

If you are jumping over several stable revisions, check previous release notes before upgrading.

Requirements

See the system requirements page for more details about software and hardware prerequisites.

Packaging

This charm is based on the charmed-mysql rock (CharmHub mysql-router-image resource-revision 57). It packages:

Libraries and interfaces

  • mysql v0
  • grafana_agent v0 for integration with Grafana
    • Implements cos_agent interface
  • rolling_ops v0 for rolling operations across units
    • Implements rolling_op interface
  • tempo_k8s v1, v2 for integration with Tempo charm
    • Implements tracing interface
  • tls_certificates_interface v2 for integration with TLS charms
    • Implements tls-certificates interface

See the /lib/charms directory on GitHub for a full list of supported libraries.

See the Integrations tab for a full list of supported integrations/interfaces/endpoints

Contact us

Charmed MySQL K8s is an open source project that warmly welcomes community contributions, suggestions, fixes, and constructive feedback.

  • Raise software issues or feature requests on GitHub
  • Report security issues through Launchpad
  • Contact the Canonical Data Platform team through our Matrix channel.