System requirements

The following are the minimum software and hardware requirements to run Charmed PostgreSQL on K8s.

Software

• Ubuntu 22.04 LTS (Jammy) or later.

Juju

The charm supports several Juju releases from 2.9 LTS onwards. The table below shows which minor versions of each major Juju release are supported by Charmed PostgreSQL.

Juju major release	Supported minor versions	Compatible charm revisions	Comment
	3.6.1+	444/445+	Recommended for production.
	3.5.1+	280+	Known Juju issue in 3.5.0
	3.4.3+	280+	Know Juju issues with previous minor versions
	3.3.0+	from 177 to 193	No known issues
	3.2.0+	from 177 to 193	No known issues
	3.1.7+	from 177 to 193	Juju secrets were stabilized in 3.1.7
	2.9.49+	73+
	2.9.32+	73 to 193	No tests for older Juju versions.

Kubernetes

• Kubernetes 1.27+

• Canonical MicroK8s 1.27+ (snap channel 1.27-strict/stable and newer)

Hardware

• 8GB of RAM.

• 2 CPU threads.

• At least 20GB of available storage.

• Access to the internet for downloading the required OCI/ROCKs and charms.

Supported architectures

The charm is based on the charmed-postgresql snap. It currently supports:

• amd64

• arm64 (from revision 211+)

The charm is based on the ROCK OCI named charmed-postgresql.

Contact us if you are interested in new architectures!

Networking

• Access to the internet is required for downloading required snaps and charms

• Only IPv4 is supported at the moment

  • See more information about this limitation in this Jira issue

  • Contact us if you are interested in IPv6!