Error "Failed to save rule: (...) UNIQUE constraint failed" when saving alert rule

Grafana Alerting
1

Dear all,

I unexpectedly started to observe error when saving alert rule. Please help to resolve.

  • What Grafana version and what operating system are you using?

    • 11.2.9

  • What are you trying to achieve?

    • Save existing Alert rule after modifications

  • How are you trying to achieve it?

    • Click Save rule

  • What happened?

    • Change of configuraiton is not saved and error popup appears “Failed to save rule: failed to update rule group: failed to update rules: failed to create new rule versions: UNIQUE constraint failed: alert_rule_version.rule_guid, alert_rule_version.version”

  • What did you expect to happen?

    • Successfull save after modifications

  • Did you receive any errors in the Grafana UI or in related logs? If so, please tell us exactly what they were.

    • Popup message as above and error in the log
    • logger=context userId=1 orgId=1 uname=admin t=2025-10-28T09:32:22.346657565Z level=error msg="failed to update rule group: failed to update rules: failed to create new rule versions: UNIQUE constraint failed: alert_rule_version.rule_guid, alert_rule_version.version"error=“failed to update rule group: failed to update rules: failed to create new rule versions: UNIQUE constraint failed: alert_rule_version.rule_guid, alert_rule_version.version” remote_addr=2001:808:0:1000:5534:7188:e4aa:9174 traceID=

This error started without any specific changes in the system. It’s not after upgarde or downgrade. Saving alert rules was working properly all the time.

Any help appreciated.

Regards,

Szymon

2

Hi @szymont ! Sorry you encountered this problem. Here you can find instructions for how to fix the problem.