Reference > Release Notes > All revisions > Revision 467/468

Revision 467/468

September 11, 2024

Dear community,

Canonical’s newest Charmed PostgreSQL operator has been published in the 14/stable channel.

Due to the newly added support for arm64 architecture, the PostgreSQL charm now releases multiple revisions simultaneously:

• Revision 468 is built for amd64 on Ubuntu 22.04 LTS
• Revision 467 is built for arm64 on Ubuntu 22.04 LTS

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

Otherwise, it can be done at deploy time with the --constraints flag:

juju deploy postgresql --constraints arch=<arch> 

where <arch> can be amd64 or arm64.

Highlights

• Upgraded PostgreSQL from v.14.11 → v.14.12 (PR #530)
  • Check the official PostgreSQL release notes
• Added support for Point In Time Recovery (PR #391) (DPE-2582)
• Secure Syncobj and Patroni with passwords (PR #596) (DPE-5269)
• Removed deprecated config option profile-limit-memory (PR #564) (DPE-4889)

Features

• Added URI connection string to relations (PR #527) (DPE-2278)
• Improve list-backups action output (PR #522) (DPE-4479)
• Show start/end time in UTC time in list-backups output (PR #551)
• Switched to constant snap locales (PR #559) (DPE-4198)
• Moved URI generation to update endpoints (PR #584)

Bugfixes

• Wait for exact number of units after scale down (PR #565) (DPE-5029)
• Improved test stability by pausing Patroni in the TLS test (PR #534) (DPE-4533)
• Block charm if it detects objects dependent on disabled plugins (PR #560) (DPE-4967)
• Disabled pgBackRest service initialization (PR #530) (DPE-4345)
• Increased timeout and terminate processes that are still up (PR #514) (DPE-4532)
• Fixed GCP backup test (PR #521) (DPE-4820)
• Handled on start secret exception and remove stale test (PR #550)
• Removed block on failure to get the db version (PR #578) (DPE-3562)
• Updated unit tests after fixing GCP backup test (PR #528) (DPE-4820)
• Ported some test_self_healing CI fixes + update check for invalid extra user credentials (PR #546) (DPE-4856)
• Fixed slow bootstrap of replicas (PR #510) (DPE-4759)
• Fixed conditional password (PR #604)
• Added enforcement of Juju versions (PR #518) (DPE-4809)
• Fixed a missing case for peer to secrets translation. (PR #533)
• Updated README.md (PR #538) (DPE-4901)
• Increased test coverage (PR #505)

Known limitations

• The unit action resume-upgrade randomly raises a harmless error message: terminated.
• The charm sysbench may crash during a PostgreSQL charm refresh.
• Make sure that cluster-cluster replication is requested for the same charm/workload revisions. An automated check is planned.
• Contact us to schedule the cluster-cluster replication upgrade with you.

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

Requirements and compatibility

This charm revision features the following changes in dependencies:

• (increased) The minimum Juju version required to reliably operate all features of the release is v3.4.5

  You can upgrade to this revision on Juju v2.9.50+, but it will not support newer features like cross-regional asynchronous replication, point-in-time recovery, and modern TLS certificate charm integrations.

• (increased) PostgreSQL version 14.12

Check the system requirements page for more details, such as supported minor versions of Juju and hardware requirements.

Integration tests

Below are the charm integrations tested with this revision on different Juju environments and architectures:

• Juju v.2.9.50 on amd64
• Juju v.3.4.5 on amd64 and arm64

See the /lib/charms directory on GitHub for details about all supported libraries.

See the metadata.yaml file on GitHub for a full list of supported interfaces.

Packaging

This charm is based on the Charmed PostgreSQL snap Revision 120/121. It packages:

• postgresql v.14.12
• pgbouncer v.1.21
• patroni v.3.1.2
• pgBackRest v.2.48
• prometheus-postgres-exporter v.0.12.1

Dependencies and automations