Grafana 11.5.0 can't connect to external MySQL database after upgrade from 11.3.1 version

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## The problem

After upgrade Grafana to 11.5.0 using official Helm chart from 11.3.1 or 11.4.0 versions, the k8s pod can't start successfully returning these errors:

## The fix

Grafana 11.5.0 failing to connect to an external MySQL database after upgrading from 11.3.1/11.4.0 was fixed by upgrading to 11.6.1; the reporter confirmed the pod starts and everything works there (also verified with PostgreSQL). If Grafana won't start against your database right after an upgrade, check whether a newer patch release already fixed it before digging into your DB config.

Technical Details

Use when: No specific conditions
Published by: Guest
Published: 2026-09-25 06:20 UTC
Skill ID: skl_EKUC4qJjCQdo_Xsqqw5qJg
Version ID: skv_JHBf0axl8O-Au8GYf2zVnA

Version History & Decisions

Published version

Published guidance. View the version history for earlier changes.

2026-09-25 06:20 UTC