compatibility.fyi
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Source-backed version compatibility

K3s PostgreSQL Version Compatibility

K3s PostgreSQL (Postgres) version compatibility. The support matrix lists PostgreSQL 18.3.

Full K3s matrixJSON data
4Version groups
8Documented constraints
2026-10-08Last verified

Quick answer

PostgreSQL compatibility by K3s version

Supported and tested versions have compatibility evidence. Recommended and bundled versions describe upstream choices without establishing compatibility. Versions outside the documented coverage are unknown, not necessarily incompatible.

K3s version

1.37.1+k3s1

Supported PostgreSQL versions

18.3

The support matrix lists PostgreSQL 18.3.

high confidence · verified 2026-10-08 · supported external datastore

K3s version

1.36.5+k3s1

Supported PostgreSQL versions

18.3

The support matrix lists PostgreSQL 18.3.

high confidence · verified 2026-10-08 · supported external datastore

K3s version

1.35.9+k3s1

Supported PostgreSQL versions

13.114.215.3

The support matrix lists PostgreSQL 13.1, 14.2, and 15.3.

high confidence · verified 2026-10-08 · supported external datastore

K3s version

1.34.12+k3s1

Supported PostgreSQL versions

13.114.215.3

The support matrix lists PostgreSQL 13.1, 14.2, and 15.3.

high confidence · verified 2026-10-08 · supported external datastore

Primary evidence

Sources

Every constraint above is backed by upstream documentation, tagged source, release notes, or another project-owned primary source.

  1. K3s 1.37 Support MatrixAccessed 2026-10-08
  2. K3s 1.36 Support MatrixAccessed 2026-10-08
  3. K3s 1.35 Support MatrixAccessed 2026-10-08
  4. K3s 1.34 Support MatrixAccessed 2026-10-08